CN113216176B - Bridge erecting and pile driving and hole guiding integrated machine and pile driving method thereof - Google Patents

Bridge erecting and pile driving and hole guiding integrated machine and pile driving method thereof Download PDF

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Publication number
CN113216176B
CN113216176B CN202110497786.2A CN202110497786A CN113216176B CN 113216176 B CN113216176 B CN 113216176B CN 202110497786 A CN202110497786 A CN 202110497786A CN 113216176 B CN113216176 B CN 113216176B
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China
Prior art keywords
pile
hole
driving
drill
drill rod
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CN202110497786.2A
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Chinese (zh)
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CN113216176A (en
Inventor
杨树金
冯欣华
庞国达
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Guangdong Liyuan Hydraulic Machinery Co ltd
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Guangdong Liyuan Hydraulic Machinery Co ltd
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/02—Placing by driving
    • E02D7/06—Power-driven drivers
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/02—Placing by driving
    • E02D7/06—Power-driven drivers
    • E02D7/14—Components for drivers inasmuch as not specially for a specific driver construction
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/02—Placing by driving
    • E02D7/06—Power-driven drivers
    • E02D7/14—Components for drivers inasmuch as not specially for a specific driver construction
    • E02D7/16—Scaffolds or supports for drivers
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
    • E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
    • E21B10/322—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools cutter shifted by fluid pressure
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/54—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B15/00—Supports for the drilling machine, e.g. derricks or masts
    • E21B15/003—Supports for the drilling machine, e.g. derricks or masts adapted to be moved on their substructure, e.g. with skidding means; adapted to drill a plurality of wells
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/22—Rods or pipes with helical structure
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B3/00—Rotary drilling
    • E21B3/02—Surface drives for rotary drilling
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/28—Enlarging drilled holes, e.g. by counterboring

Abstract

The invention discloses a bridge erecting and pile driving pilot hole all-in-one machine and a pile driving method thereof, wherein the bridge erecting and pile driving pilot hole all-in-one machine comprises a bridge erecting mechanism, a pile driving pilot hole integrated device and a pile hoisting crown block, wherein the pile driving pilot hole integrated device comprises a pile driving hammer, an upright post tower, a pile frame mounting platform, a longitudinal moving frame and a pilot hole mechanism; in addition, a sliding pile hoisting crown block is arranged below the suspended section of the bridge erecting mechanism, and the pile hoisting crown block is used for directly installing the pipe pile below the pile driving hammer, so that the installation of the pipe pile is more convenient, the construction operation flow is simplified, the pile forming quality is ensured, and the construction efficiency and the engineering progress are improved.

Description

Bridge erecting and pile driving and hole guiding integrated machine and pile driving method thereof
Technical Field
The invention relates to the technical field of building construction equipment, in particular to a bridge erecting and hole guiding integrated machine and a piling method thereof.
Background
The upper structural members of the existing highway, railway, pipeline and other high bridges are increasingly prefabricated in factories and then assembled on site, so that the construction progress is accelerated. The bridge girder erection machine is equipment for driving on a bridge track and placing a prefabricated beam piece on a prefabricated bridge pier, and the method requires that a lower pile foundation is constructed in advance, and the pile foundation needs an independent construction scheme to be constructed in advance. If the engineering geological conditions are complex or in rivers, seas and lakes, the pile foundation construction difficulty is large, the engineering progress is slow, and the construction cost is high by adopting additional equipment such as a piling ship, a temporary trestle and the like.
In order to solve the problems, the Chinese patent with application number 201811007101.6 discloses a piling method and special equipment using a bridge girder erection machine, wherein the invention uses the bridge girder erection machine and a pile driver for construction; the front and back telescopic arms at the front end of the bridge girder erection machine are provided with longitudinal supporting frames which can longitudinally stretch out and draw back and extend to the ground, and the bridge girder erection machine is provided with at least one of a hole guiding machine, a stirrer and a pile driver which can move back and forth along a slide rail on the bridge girder erection machine. The construction method of the invention has the defects that a stable supporting position is required to be continuously provided at the front end of the bridge girder erection machine for supporting the longitudinal supporting frame extending to the ground, and the construction method can not be suspended for operation, particularly in construction in rivers, seas and lakes, the front end of the bridge girder erection machine can not provide the stable supporting position, and the actual construction difficulty is higher.
The applicant's patent of utility model No. CN201921824290.6 discloses a self-supporting pile driver, which comprises a bridging mechanism, a pile driving mechanism, a folding mechanism, wherein the pile driving mechanism mounted on the bridging mechanism through the folding mechanism comprises a vertical column tower, an amplitude-variable guide rail, a rotary support, an amplitude-variable oil cylinder fixing seat, a movable bolt, a hoisting winch, a hoisting steel wire rope, a hoisting pulley block, a pile driving hammer and a front guide rail, the pile driving mechanism in the self-supporting pile driver can only hammer a common precast pile in a soft soil foundation, in the actual engineering, because the engineering has a high requirement on the settlement control, the soil layer below the soft soil layer must be used as a bearing layer, therefore, generally speaking, the precast pile pipe needs to pass through the hard soil layer above the soft soil layer, generally a sand layer, when the thickness of the sand layer is larger, due to the soil plug effect, the pile sinking mode of only adopting the pile hammer is very difficult to penetrate through a sandy soil layer, if one more pilot hole drilling machine is additionally arranged on the bridge erecting mechanism, the weight of the front extending suspension part of the bridge erecting mechanism is greatly increased, and the front extending suspensible length of the bridge erecting mechanism is reduced, for example, a 250T bridge erecting machine is taken as an example, only the pile hammer is configured to be used as a hanging self-supporting pile driver of the pile driving mechanism to be capable of extending for 35m, and if one more pilot hole drilling machine is additionally configured, the maximum suspensible length is 22m, so that the suspensible length of the hanging self-supporting pile driver is greatly reduced; therefore, the design of reducing weight and simplifying the operation flow at the front end of the front extending suspension part of the bridge erecting mechanism is the key, and two split pile machines (a pile hammering machine and a hole guiding drilling machine) are arranged on the bridge erecting mechanism, so that the problems of difficult construction, influence on pile forming quality, low construction efficiency, high cost and the like caused by the large weight of the two devices on the bridge erecting machine, long operation time for exchanging and moving the machines and complex operation due to the limited construction occasions are solved. In addition, when the suspended self-supporting pile driver is used for mounting the tubular pile on the pile driving mechanism, the pile driving mechanism needs to be folded and laid flat firstly, the tubular pile is mounted on the pile driving mechanism after being folded and laid flat and then ascends to the pile driving mechanism again, the pile driver with the tubular pile can be mounted only by the pile driving mechanism needing to be folded and laid flat, if the pile length is longer and a pile foundation needs to be connected, the pile forming precision and the pile forming quality are affected, the pile connecting and replacing time is longer, the construction efficiency is low, and the cost is high.
Therefore, it is highly desirable to develop a bridge-driving pilot hole integrated device and a driving method thereof for implementing a suspended self-supporting type bridge-driving pilot hole hammering pile driving on a bridge girder erection machine, wherein the integrated device can not only perform hard soil layer pilot hole hammering pile sinking construction, but also avoid greatly reducing the length capable of being overhung, and simplify the construction operation flow.
Disclosure of Invention
The invention aims to overcome the defects and provides a bridge piling and pilot hole integrated machine and a piling method thereof, wherein the bridge piling and pilot hole integrated machine is provided with two piling devices, namely a hammering device and a pilot hole piling device, on a bridge erecting mechanism, realizes the hammering and piling of the pilot hole of a suspended self-supporting bridge, can realize the hammering and pile sinking construction of the pilot hole on a hard soil foundation, integrally designs the two piling devices of hammering and pilot hole, simplifies the structure, indirectly lightens the weight of the front extending and suspending part of the bridge erecting machine, avoids greatly reducing the suspensible length, and simplifies the construction operation process; in addition, a sliding pile hoisting crown block is arranged below the suspended section of the bridge erecting mechanism, and the pile hoisting crown block is used for directly installing the tubular pile below the pile driving hammer, so that the tubular pile is more convenient to install, the construction cost is saved, the pile forming quality is ensured, and the construction efficiency and the engineering progress are improved.
The technical scheme is as follows:
a bridge erecting and hole guiding integrated machine comprises a bridge erecting mechanism, a pile driving and hole guiding integrated device and a pile hanging crown block, wherein the bridge erecting mechanism comprises a first main beam, a second main beam, a stay cable mechanism and two pile hanging crown blocks, the stay cable mechanism comprises a cable-stayed cross beam, a first cable-stayed support column and a second cable-stayed support column, the lower ends of the first cable-stayed support column and the second cable-stayed support column are respectively connected with the middle parts of the first main beam and the second main beam, the two ends of the cable-stayed cross beam are respectively connected with the upper ends of the first cable-stayed support column and the second cable-stayed support column, the two ends of the pile hanging crown block are respectively connected with the top surfaces of the rear ends of the first main beam and the second main beam in a longitudinal sliding manner, the bridge erecting mechanism is suspended through the front ends of the first main beam and the second main beam to form a front-extending crown block, the pile hanging crown block is connected with the bottom surface of the front-extending crown block in a longitudinal sliding manner, the pile driving and hole guiding integrated device comprises a pile hammer, an upright post tower, a pile frame mounting platform, a longitudinal moving frame, a hole guiding mechanism, a hanging hammer winch, a hanging drill winch, a hanging hammer steel wire rope and a hanging drill steel wire rope, the pile driving and hole guiding integrated device is longitudinally and slidably connected with the top surface of the forward extending suspension section through two sides of the longitudinal moving frame, and the pile frame mounting platform is transversely and slidably connected with the top surface of the longitudinal moving frame; the pile frame comprises a pile frame mounting platform, a pile driving mechanism, a guide hole mechanism, a pile driving mechanism, a guide hole mechanism, a hanging drill winch, a hanging hammer winch and a hanging drill winch, wherein the pile driving mechanism is arranged on the pile frame mounting platform, the pile driving mechanism is arranged on the pile driving mechanism, the guide hole mechanism is arranged on the pile driving mechanism, the hanging drill winch is connected with the upper end of the pile driving mechanism through a hanging drill steel wire rope, and the hanging drill winch is connected with the upper end of the guide hole mechanism in a lifting driving mode through the hanging drill steel wire rope.
The hole guiding mechanism comprises an electric power head and a first spiral drill rod, the electric power head is vertically and slidably connected with the front side face of the upright tower, the first spiral drill rod is installed at the lower end of a rotary output shaft of the electric power head, and the hanging drill winch is connected with the upper end of the electric power head in a lifting and driving mode through the hanging drill steel wire rope.
The hole guiding mechanism comprises a follow-up frame, a first hydraulic power head, a rotary spraying drill rod and a rotary spraying stirring drill bit, the follow-up frame, the first hydraulic power head and the front side face of the upright tower are vertically and slidably connected, the follow-up frame is located above the first hydraulic power head, the upper end of the rotary spraying drill rod is rotatably connected with the follow-up frame, the lower end of the rotary spraying drill rod penetrates through the first hydraulic power head and is rotatably connected with the first hydraulic power head, the rotary spraying stirring drill bit is installed at the lower end of the rotary spraying drill rod, and the hanging drill winch is connected with the follow-up frame in a lifting driving mode through the hanging drill wire rope.
The follow-up frame comprises a first pipe inlet, a second pipe inlet, a follow-up retainer, a rotary supporting chassis and a follow-up pulley block, the rotary spraying stirring drill bit comprises a first pipe orifice and a second pipe orifice, the bottom end surface of the follow-up retainer is rotationally connected with the upper end of the rotary spraying drill rod through the rotary supporting chassis, the first pipe inlet and the second pipe inlet are arranged on the front side surface of the follow-up retainer, the drill steel wire rope is connected with the top end surface of the follow-up retainer in a lifting driving way through the follow-up pulley block, a first pipe inlet of the follow-up frame is communicated with a first pipe outlet of the rotary jet stirring drill bit through a first pipeline of the rotary jet drill rod, and a second pipe inlet of the follow-up frame is communicated with a second pipe outlet of the rotary jet stirring drill bit through a second pipeline of the rotary jet drill rod.
The high-pressure air compressor and the cement slurry pump station are communicated with the first pipe inlet and the second pipe inlet through pipelines respectively.
The rotary spraying stirring drill bit comprises a stirring drill rod, two spiral drill blades, a plurality of alloy drill bits and a plurality of stirring blades, wherein the two spiral drill blades are respectively arranged at the lower end of the stirring drill rod, the alloy drill bits are respectively arranged at the lower ends of the two spiral drills, the stirring blades are uniformly distributed in the middle of the stirring drill rod in the circumferential direction, and the first pipe inlet and the second pipe inlet are respectively arranged at the lower end of the stirring drill rod.
The hole leading mechanism comprises a top support frame, a second hydraulic power head, a telescopic drill rod and a spiral drilling tool, the top support frame, the second hydraulic power head and the front side face of the upright tower are in vertical sliding connection, the top support frame is located above the second hydraulic power head, the second hydraulic power head is provided with a guide sleeve, the telescopic drill rod comprises an outer rod and an inner rod, the inner rod is telescopically nested in the outer rod, the upper end of the outer rod is rotatably connected with the top support frame, the lower end of the outer rod penetrates through the guide sleeve and is rotatably connected with the guide sleeve, the inner rod telescopically penetrates through the guide sleeve and is connected with the upper end of the spiral drilling tool, and the hoisting machine is connected with the upper end of the inner rod in a lifting and pulling driving mode through the hoisting wire rope.
The hole guiding mechanism comprises a guide frame, a drill rod power head, a hole guiding drill rod, a second spiral drill rod and a bottom expanding drill bit, the guide frame and the drill rod power head are vertically and slidably connected with the front side face of the upright tower, the lower end of the hole guiding drill rod penetrates through the drill rod power head and is connected with the drill rod power head in a rotating mode, the upper end of the hole guiding drill rod is rotatably connected with the guide frame, the bottom expanding drill bit is connected with the lower end of the hole guiding drill rod through the second spiral drill rod, and the hanging drill winch is connected with the guide frame in a lifting and driving mode through the hanging drill wire rope.
The bottom expanding drill bit comprises a drill bit main body, a hydraulic driving device, two bottom expanding digging cutters and a cement releasing port, wherein the hollow part inside the drill bit main body forms a drill bit accommodating cavity, the hydraulic driving device is installed in the drill bit accommodating cavity and is in driving connection with the two bottom expanding digging cutters, the hollow part inside the hole leading drill rod and the second spiral drill rod forms a drill rod accommodating cavity, a hydraulic driving pipe and a cement conveying pipe are arranged in the drill rod accommodating cavity, a hydraulic oil input pipe orifice and a cement input pipe orifice are arranged on the guide frame, the hydraulic oil input pipe orifice passes through the hydraulic driving pipe and the hydraulic driving device, and the cement input pipe orifice passes through the cement conveying pipe and the cement input pipe orifice.
The bottom expanding drill bit further comprises two transmission gears, a first transmission through hole and a second transmission through hole are respectively formed in the side walls of the two sides of the middle of the drill bit accommodating cavity, the cement release port is formed in the side wall of the lower end of the drill bit accommodating cavity, a cutter head is arranged at one end of the bottom expanding digging cutter, digging cutter teeth are arranged at the other end of the bottom expanding digging cutter, and the two bottom expanding digging cutters are respectively installed on the outer side surfaces of the first transmission through hole and the second transmission through hole through one ends of the digging cutter teeth and are rotatably connected with the outer side surface of the drill bit main body; the two transmission gears are respectively arranged in the first transmission through hole and the second transmission through hole and are respectively meshed with the two digging cutter teeth, and the hydraulic driving device is in driving connection with the two transmission gears.
The bottom expanding drill bit further comprises a lower spacer bush, the hydraulic driving device comprises a hydraulic oil cylinder, a telescopic rod and two racks, the lower spacer bush is installed in the middle of the drill bit containing cavity, a rotary through hole is formed in the middle of the lower spacer bush, the hydraulic oil cylinder is installed at the upper end of the drill bit containing cavity, the upper end of the telescopic rod is in telescopic connection with the hydraulic oil cylinder, the lower end of the telescopic rod penetrates through the rotary through hole and is in rotary connection with the lower spacer bush, and the two racks are installed on two sides of the middle of the telescopic rod respectively and are in meshed connection with the two transmission gears respectively.
The guiding hole drill rod comprises a drill rod layer, a drill rod layer and a drill rod layer, wherein the drill rod layer, the drill rod layer and the drill rod layer are hollow respectively, the drill rod layer and the drill rod layer are sequentially sleeved with a telescopic connector from the outer layer to the inner layer, the upper end of the drill rod layer is connected with the guide frame in a rotating mode, the lower end of the drill rod layer penetrates through the drill rod power head and is connected with the drill rod rotating mode, and the lower end of the drill rod layer is connected with the second spiral drill rod.
The pile hoisting crane comprises a first pile hoisting mechanism and a second pile hoisting mechanism, the first pile hoisting mechanism comprises a first pile hoisting machine, a first pile hoisting pulley block and a first lifting hook, the second pile hoisting mechanism comprises a second pile hoisting machine, a second pile hoisting pulley block and a second lifting hook, the first pile hoisting machine and the second pile hoisting machine are respectively connected with the bottom surface of the front-extending suspension section in a longitudinal sliding mode, the first lifting hook is connected with the first pile hoisting machine through the first pile hoisting pulley block, and the second lifting hook is connected with the second pile hoisting machine through the second pile hoisting pulley block.
The pile driving and hole guiding integrated device further comprises a first supporting rod, a second supporting rod, a first supporting oil cylinder and a second supporting oil cylinder, the pile frame mounting platform further comprises a first platform supporting frame and a second platform supporting frame, the first platform supporting frame and the second platform supporting frame are respectively mounted at two ends of the front side face of the pile frame mounting platform, one end of the first supporting rod is hinged to the left side face of the upright tower frame, the other end of the first supporting rod is hinged to the first platform supporting frame through the first supporting oil cylinder, one end of the second supporting rod is hinged to the right side face of the upright tower frame, and the other end of the second supporting rod is hinged to the second platform supporting frame through the second supporting oil cylinder.
The pile driving and hole guiding integrated device further comprises a third pile hoisting mechanism, the third pile hoisting mechanism comprises a third pile hoisting machine, a third pile hoisting pulley block and a third lifting hook, the third pile hoisting machine is installed on the pile frame installation platform, the upper end of the third pile hoisting pulley block is installed on the upright tower, and the third pile hoisting machine is connected with the third lifting hook through the third pile hoisting pulley block.
The pile driving and hole guiding integrated device further comprises a working platform, the upright tower comprises an upright upper section, an upright hinge section and an upright lower section, the upright tower is fixedly connected with the pile frame mounting platform through the upright hinge section, the upright upper section and the upright lower section are respectively connected with the upper end and the lower end of the upright hinge section, and the working platform is mounted on the upright lower section; the upright post tower is a flower shelf type upright post or a cylinder type upright post.
The pile driving and hole guiding integrated device further comprises a transverse driving oil cylinder, and the pile frame mounting platform is in transverse driving connection with the longitudinal moving frame through the transverse driving oil cylinder.
The pile and guide hole integrated device further comprises a longitudinal driving mechanism, wherein the longitudinal driving mechanism comprises a first driving oil cylinder and a second driving oil cylinder, one end of the first driving oil cylinder is connected with the top surface of the first main beam, the other end of the first driving oil cylinder is connected with the left side of the longitudinal moving frame, one end of the second driving oil cylinder is connected with the top surface of the second main beam, and the other end of the second driving oil cylinder is connected with the right side of the longitudinal moving frame.
The pile-driving and hole-guiding integrated device further comprises a top pulley yoke, wherein the top pulley yoke comprises a drill rod pulley block and a drop hammer pulley block, the drill rod pulley block and the drop hammer pulley block are respectively located at the front end and the rear end middle position of the top pulley yoke, the drop hammer steel wire rope is connected with the upper end of the pile-driving hammer in a lifting driving mode through the drop hammer pulley block, and the drop drill steel wire rope is connected with the upper end of the hole-guiding mechanism in a lifting driving mode through the drill rod pulley block.
The pile driving and hole guiding integrated device further comprises a first transition guide pulley and a second transition guide pulley, the top pulley frame further comprises a first steering pulley, a second steering pulley, a third steering pulley and a fourth steering pulley, the first transition guide pulley and the second transition guide pulley are respectively arranged on the pile frame mounting platform and are positioned on the left side and the right side of the upright tower frame, the first steering pulley and the second steering pulley are respectively arranged on the left side and the right side of the top pulley frame, the third steering pulley and the fourth steering pulley are respectively arranged in the middle of the top pulley frame, one end of the drill lifting steel wire rope is connected with the drill lifting winch, the other end of the drill lifting steel wire rope sequentially bypasses the first transition guide pulley, the first steering pulley and the third steering pulley to be connected with the pulley block drill rod, one end of the hammer steel wire rope is connected with the hammer lifting winch, and the other end of the hammock steel wire rope sequentially bypasses the second transition guide pulley, the second steering pulley and the fourth steering pulley to be connected with the hammock pulley block.
The bridge erecting mechanism further comprises a front support leg, a first front middle support leg, a second front middle support leg, a first rear middle support leg, a second rear middle support leg, a first rear support leg and a second rear support leg, wherein the first rear support leg, the first rear middle support leg and the first front middle support leg are sequentially connected with the bottom surface of the first main beam in a longitudinal sliding mode from back to front, the second rear support leg, the second rear middle support leg and the second front middle support leg are sequentially connected with the bottom surface of the second main beam in a longitudinal sliding mode from back to front, and two ends of the top surface of the front support leg are connected with the bottom surface of the front extending suspending section of the first main beam and the second main beam in a longitudinal sliding mode.
The stay cable mechanism further comprises a first front-end stay cable, a second front-end stay cable, a first rear-end stay cable and a second rear-end stay cable, one end of the first front-end stay cable and one end of the first rear-end stay cable are connected with the upper end of the first stay support column, the other end of the first front-end stay cable and the other end of the first rear-end stay cable are respectively connected with the front end of the first main beam and the rear end of the first main beam, one end of the second front-end stay cable and one end of the second rear-end stay cable are connected with the upper end of the second stay support column, and the other end of the second front-end stay cable and the other end of the second rear-end stay cable are respectively connected with the front end of the second main beam and the rear end of the second main beam.
A pile driving method adopting the bridge pile driving and hole guiding all-in-one machine comprises the following steps:
(1) the first main beam and the second main beam extend forwards to enable the extending suspension section of the bridge erecting mechanism to be suspended above the pile foundation to be constructed;
(2) longitudinally driving the longitudinal moving frame, longitudinally moving the pile driving and hole guiding integrated device to the front end of the front extending suspension section, and then transversely driving the pile frame mounting platform to enable the hole guiding center of the hole guiding mechanism to be aligned with the pile center of a pile foundation to be constructed;
(3) starting a hole guiding mechanism of the pile-driving hole guiding integrated device, and carrying out hole guiding construction operation on a pile position of a pile foundation to be constructed until the pile hole guiding of the pile foundation to be constructed is completed;
(4) starting the hoisting drill winch to lift the hole guiding mechanism out of the pile hole;
(5) continuously driving the longitudinal moving frame forwards longitudinally to enable the hammering center of the pile driving hammer to be aligned to the pile center of the pile foundation to be constructed;
(6) starting the pile hoisting crown block, installing the precast tubular pile to be constructed below the pile hammer, and aligning the lower end of the tubular pile to the pile hole;
(7) and starting the pile driving hammer of the pile driving and hole guiding integrated device, and utilizing the pile driving hammer to sink the precast tubular pile to be constructed into the pile hole of the pile foundation to complete the pile foundation construction.
It should be noted that:
the foregoing references to "first and second …" do not denote any particular quantity or order, but rather are used to distinguish one name from another.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
The foregoing "lateral direction" is based on the left-right direction shown in the drawings, the foregoing "longitudinal direction" is based on the front-rear direction shown in the drawings, and the foregoing "vertical direction" is based on the vertical direction shown in the drawings.
The following illustrates the advantages or principles of the invention:
1. the invention provides a bridging, pile-driving and hole-leading integrated machine which comprises a bridging mechanism, a pile-driving and hole-leading integrated device and pile-hanging crown blocks, wherein the bridging mechanism comprises a first main beam, a second main beam, a stay cable mechanism and two pile-hanging crown blocks, the two main beams are used as bridging and front-extending suspended main beams, the stay cable mechanism comprises a stay cable cross beam, a first stay cable support column and a second stay cable support column, two ends of the stay cable cross beam are respectively connected with the upper ends of the first stay cable support column and the second stay cable support column to form a portal frame, and the portal frame is arranged in the middle of the first main beam and the second main beam, so that the overall stability of the first main beam and the second main beam is improved, and the safety of pile-driving of the pile-driving mechanism during hanging pile driving is improved; the two hoisting crown blocks are used for hoisting and installing the prefabricated beam slab, and can be respectively moved to the rear ends of the first main beam and the second main beam in the process of hole-leading pile driving of the pile-driving hole-leading integrated device, so that the balance weights of the rear ends of the first main beam and the second main beam are increased, and the suspension stability of the pile-driving hole-leading integrated device is improved; the pile driving and hole guiding integrated device comprises a pile hammer, an upright post tower, a pile frame mounting platform, a longitudinal moving frame, a hole guiding mechanism, a hanging hammer winch, a hanging drill winch, a hanging hammer steel wire rope and a hanging drill steel wire rope, wherein the pile hammer and the hole guiding mechanism are respectively mounted on the front side and the rear side of the upright post tower, so that the hole guiding mechanism can be used for firstly guiding holes in a foundation soil layer, and then the pile hammer is used for hammering and driving the prefabricated pipe pile into a foundation with the guided pile holes; when the bridge erecting mechanism is used, the first main beam and the second main beam of the bridge erecting mechanism extend forwards, so that the extending suspension section of the bridge erecting mechanism is suspended above a pile foundation to be constructed; longitudinally driving the longitudinally moving frame, longitudinally moving the pile driving and hole guiding integrated device to the front end of the forward extending suspension section, and transversely driving the pile frame mounting platform to enable the hole guiding center of the hole guiding mechanism to be aligned with the pile center of the pile foundation to be constructed; starting a hole guiding mechanism of the pile driving and hole guiding integrated device, and carrying out hole guiding construction operation on a pile position of a pile foundation to be constructed until the pile hole guiding of the pile foundation to be constructed is completed; then starting a hoisting drill winch to lift the hole guiding mechanism out of the pile hole; then, continuously driving the longitudinal moving frame forwards longitudinally to enable the hammering center of the pile driving hammer to be aligned to the pile center of the pile foundation to be constructed; then starting a pile hoisting crane, installing the precast tubular pile to be constructed below the pile hammer, and aligning the lower end of the tubular pile with the pile hole; and finally, starting a pile driving hammer of the pile driving and hole guiding integrated device, and sinking the precast tubular pile to be constructed into a pile hole of the pile foundation by using the pile driving hammer to complete pile foundation construction. The bridge-erecting pile-driving and hole-leading integrated machine is characterized in that a bridge-erecting mechanism is provided with a hammering device and a hole-leading device, so that suspended self-supporting bridge-erecting hammer-driving and pile-leading are realized, hole-leading hammering pile sinking construction can be realized on a hard soil foundation, the hammering and hole-leading devices are integrally designed, the weight of a front extending and suspending part of the bridge-erecting machine is indirectly reduced, the length capable of extending is prevented from being greatly reduced, and the structure and the construction operation flow of the equipment are simplified; in addition, a sliding pile hoisting crown block is arranged below the suspended section of the bridge erecting mechanism, and the pile hoisting crown block is used for directly installing the tubular pile below the pile driving hammer, so that the tubular pile is more convenient to install, the construction cost is saved, the pile forming quality is ensured, and the construction efficiency and the engineering progress are improved.
2. In a first embodiment, the hole guiding mechanism comprises an electric power head and a first auger stem, the electric power head and the first auger stem are mounted on the front side face of the upright tower, when the hole guiding mechanism is used, a hole can be drilled and guided by using the first auger stem, and the electric power head provides rotary power for the first auger stem.
3. In the second embodiment, in practical engineering, particularly for pile foundations on some marshland, in order to improve the bearing capacity of the pile foundation, increase the friction force between the pipe pile and the foundation soil layer and reduce the settlement of the pile foundation, a cored mixing pile is mostly adopted for construction, the existing cored mixing pile consists of a cement mixing pile and a concrete core pile, and before the cement mixing pile is made into initial setting, the pipe pile is driven into the cement mixing pile by a pile driving hammer to form a composite pile; the hole leading mechanism of the second embodiment comprises a follow-up frame, a first hydraulic power head, a rotary spraying drill rod and a rotary spraying stirring drill bit, wherein the rotary spraying drill rod and the rotary spraying stirring drill bit are installed on the front side surface of the upright tower frame; during the use, utilize the stirring drill bit that spouts soon to drill the pilot hole on the foundation soil layer of waiting to be under construction pile foundation earlier to make cement mixing pile on the stake hole of accomplishing, reuse pile hammer with the tubular pile sink into the stake hole of pile foundation, accomplish the pile foundation construction of stirring the stake with the core.
4. The follow-up frame comprises a first pipe inlet, a second pipe inlet, a follow-up retainer, a rotary support chassis and a follow-up pulley block, wherein the first pipe inlet and the second pipe inlet are respectively used for conveying air and cement powder, the rotary support chassis is used for being rotatably connected with a rotary spraying drill rod, the follow-up pulley block is used for being driven by a lifting and pulling steel wire rope of a hanging drill and is more labor-saving to lift by the pulley block, the rotary spraying stirring drill bit comprises a first pipe outlet and a second pipe outlet, the rotary spraying stirring drill bit is provided with two pipe outlets which are respectively used for outputting air and cement powder, and the rotary spraying drill rod is internally provided with two pipes in a hollow mode and is respectively used for communicating the pipe outlets of the air and the cement powder.
5. The rotary-jetting stirring drill bit of the second embodiment of the invention comprises a stirring drill rod, two spiral drill blades, a plurality of alloy drill bits and a plurality of stirring blades, wherein the two spiral drill blades and the plurality of alloy drill bits are used for drilling a foundation soil layer, and the plurality of stirring blades are respectively used for stirring cement slurry conveyed into a pile hole, so that the cement slurry is more uniform.
6. In the third embodiment, in the actual engineering, if a thicker sandy soil layer needs to be penetrated and the engineering with a longer pile length generally exceeds more than 40 meters, if the method of the first embodiment is adopted to drive the first auger stem to drill the hole and lead the hole by using the electric power head, the length of the first auger stem exceeds more than 40 meters, and the height of the upright tower frame also reaches more than 40 meters, the weight of the front extending suspension part of the bridge erecting mechanism is increased, so that the front extending suspensible length of the bridge erecting mechanism is reduced, therefore, the invention provides the third embodiment of the hole leading mechanism, the hole leading mechanism comprises a top support frame, a second hydraulic power head, an extension drill stem and a spiral drill tool, the front side surface of the upright tower frame is provided with the extension drill stem and the spiral drill tool, the spiral drill tool can realize the long hole leading of the pile foundation without increasing the height of the upright tower frame, meanwhile, the weight of the front extending suspension part of the bridge erecting mechanism is prevented from being increased; and the second hydraulic power head is used for driving the telescopic drill rod and the spiral drilling tool to rotate.
7. In the fourth embodiment, in the actual engineering, when the PHC tubular pile is sunk to a sandy soil layer and cannot sink the PHC tubular pile, a drilling tool is generally adopted to drill soil in a cavity of the inner wall of the tubular pile and soil below the inner wall of the cavity, and then the pile sinking is continuously hammered, but because the drilling tool cannot drill the soil below the tubular pile wall, the diameter of the drilled hole is smaller than the diameter of the tubular pile, and the tubular pile wall sinks and is blocked by the soil below the tubular wall, so that the tubular pile sinking is difficult; therefore, the hole guiding mechanism of the invention provides a fourth embodiment, the hole guiding mechanism comprises a guide frame, a drill rod power head, a hole guiding drill rod, a second spiral drill rod and a bottom expanding drill bit, the hole guiding drill rod, the spiral drill rod and the bottom expanding drill bit are arranged on the front side surface of the upright tower, the drill rod power head is used for driving the hole guiding drill rod to rotate, the hole guiding drill rod drives the spiral drill rod and the bottom expanding drill bit to rotate, the bottom expanding drill bit is used for conducting hole guiding and hole expanding construction operation, the bottom expanding drill bit not only can drill soil in a cavity of the inner wall of the tubular pile and soil below the cavity, but also can expand the soil below the tubular pile wall by expanding the bottom expanding digging cutter, so that the tubular pile wall is prevented from sinking and being blocked by the soil below the tubular pile wall, and pile sinking of the tubular pile is easier.
8. The bottom expanding drill bit comprises a drill bit main body, a hydraulic driving device, two bottom expanding digging cutters and a cement release port, wherein a hydraulic oil input pipe port is communicated with the hydraulic driving device through a hydraulic driving pipe, a hydraulic oil input port is communicated with an external hydraulic oil pump station so as to provide hydraulic driving power for the hydraulic driving device, the hydraulic driving device is used for controlling the two bottom expanding digging cutters to expand and fold, the two bottom expanding digging cutters expand to realize drilling and hole expanding, when a tubular pile reaches a position near a specified depth and a pile foundation is designed to need to be provided with an expanded pile head at the pile bottom, the bottom expanding drill bit can expand the bottom expanding digging cutters to the maximum angle to continue digging downwards, and an expanded hole is formed; and finally, communicating a cement input pipe orifice with a cement pump station through a fluid conveying pipe, injecting cement into the enlarged hole by using the cement release port of the bottom expanding drill bit, and after the enlarged hole is filled with the cement, forming the enlarged pile head of the tubular pile to finish the enlargement of the pile head.
9. In the bottom expanding drill bit of the fourth embodiment of the invention, one end of the bottom expanding digging cutter is provided with the cutter head, the other end of the bottom expanding digging cutter is provided with the digging cutter teeth, the cutter head at one end of the bottom expanding digging cutter is used for digging the foundation soil layer, when the bottom expanding digging drill bit is used, the hydraulic driving device drives the two transmission gears to rotate, the transmission gears drive the digging cutter teeth, and the digging cutter teeth drive the bottom expanding digging cutter to open.
10. The bottom expanding drill bit of the fourth embodiment of the invention further comprises a lower spacer bush, the pressure driving device comprises a hydraulic oil cylinder, a telescopic rod and two racks, when the bottom expanding drill bit is used, the hydraulic oil cylinder is provided with the telescopic rod to stretch up and down, and the telescopic rod pulls the two transmission gears to rotate through the two racks, so that the two bottom expanding digging cutters are driven to open or close.
11. The hole guiding drill rod in the fourth embodiment of the invention comprises a first drill rod layer, a second drill rod layer, a third drill rod layer and a fourth drill rod layer, wherein the hole guiding drill rod is formed by telescopic connection of the drill rod layers, and telescopic drilling and hole guiding of the hole guiding drill rod are facilitated.
12. The pile hoisting crown block comprises a first pile hoisting mechanism and a second pile hoisting mechanism, wherein the two pile hoisting mechanisms are used for installing a precast tubular pile to be constructed below a pile driving hammer.
13. The pile driving and hole leading integrated device also comprises a first support rod, a second support rod, a first support oil cylinder and a second support oil cylinder, wherein the pile frame mounting platform, the upright post tower and the support rods form a stable triangular support structure, so that the integral structure of the pile driving and hole leading integrated device is more stable; the supporting angle of the two supporting rods is adjusted by the two supporting oil cylinders, the structure is simple, and the use is convenient.
14. The pile driving and hole guiding integrated device further comprises a third pile hoisting mechanism, and the third pile hoisting mechanism is used for assisting in being matched with a pile hoisting crane to install the tubular pile below the pile driving hammer, so that the installation efficiency of the tubular pile is improved.
15. The pile driving and hole leading integrated device also comprises a working platform, wherein the upright post tower frame comprises an upright post upper section, an upright post twisting section and an upright post lower section, the working platform provides a man-standing platform for the installation operation of the precast tubular pile, and particularly provides a working platform for operators in the pile foundation construction with complicated engineering geological conditions or in rivers, seas and lakes, so that the cost for erecting a temporary platform in the rivers, seas and lakes is reduced, and the construction cost is saved; the upright post tower is divided into a plurality of sections, so that various installation combinations of the upright post tower are facilitated. Preferably, the upright tower is a flower shelf type upright or a cylinder type upright. The flower-frame type upright post is of a truss structure formed by welding angle irons, and the cylindrical upright post is formed by connecting a plurality of sections of cylindrical steel pipes.
16. The pile driving and hole guiding integrated device further comprises a transverse driving oil cylinder, the pile frame mounting platform is driven by the transverse driving oil cylinder to transversely move on the longitudinal moving frame, and the pile driving and hole guiding integrated device is simple in structure and convenient to use.
17. The pile driving and hole guiding integrated device further comprises a longitudinal driving mechanism, the longitudinal driving mechanism comprises a first driving oil cylinder and a second driving oil cylinder, and the longitudinal moving frame is driven by the two driving oil cylinders to realize the longitudinal movement of the longitudinal moving frame.
18. The pile driving and hole guiding integrated device also comprises a top pulley yoke, wherein the top pulley yoke comprises a drill rod pulley block and a hanging hammer pulley block, a hanging hammer steel wire rope is connected with the upper end of the pile driving hammer in a lifting driving mode through the hanging hammer pulley block, and a hanging drill steel wire rope is connected with the upper end of the inner layer rod in a lifting driving mode through the drill rod pulley block, so that the lifting of the pile driving hammer and the telescopic drill rod is more labor-saving.
19. The pile driving and hole guiding integrated device further comprises a first transition guide pulley, a second transition guide pulley, a first steering pulley, a second steering pulley, a third steering pulley and a fourth steering pulley, the top pulley frame further comprises the first steering pulley, the second steering pulley, the third steering pulley and the fourth steering pulley, the steering driving of the steel wire rope is achieved through the transition guide pulleys and the steering pulleys, the structure is simple, and the use is convenient.
20. The bridge erecting mechanism further comprises a front support leg, a first front middle support leg, a second front middle support leg, a first rear middle support leg, a second rear middle support leg, a first rear support leg and a second rear support leg, wherein the first front middle support leg, the second front middle support leg, the first rear middle support leg and the second rear middle support leg respectively provide lower end support for the first main beam and the second main beam and facilitate the movement of the bridge erecting mechanism; the first rear support leg and the second rear support leg provide limiting support for the rear ends of the first main beam and the second main beam, and the rear ends of the first main beam and the second main beam are prevented from sinking too heavy, so that the front ends of the first main beam and the second main beam are raised; when the pile foundation pier below the front extending suspension section is completed, the front supporting leg provides front end support for the front extending suspension section.
21. The stay cable mechanism also comprises a first front-end stay cable, a second front-end stay cable, a first rear-end stay cable and a second rear-end stay cable, wherein the four stay cables are connected with the front end and the rear end of the two main beams in a stayed-cable mode respectively, so that the overall stability of the first main beam and the second main beam is improved, and the safety of the pile driving and guiding hole integrated device in suspension pile driving is improved.
22. The invention also provides a piling method of the bridge erecting piling and hole leading integrated machine, which comprises the steps of firstly extending the first main beam and the second main beam of the bridge erecting mechanism forwards to enable the forwards extending suspension section of the bridge erecting mechanism to be suspended above a pile foundation to be constructed; longitudinally driving the longitudinally moving frame, longitudinally moving the pile driving and hole guiding integrated device to the front end of the forward extending suspension section, and transversely driving the pile frame mounting platform to enable the hole guiding center of the hole guiding mechanism to be aligned with the pile center of the pile foundation to be constructed; starting a hole guiding mechanism of the pile driving and hole guiding integrated device, and carrying out hole guiding construction operation on a pile position of a pile foundation to be constructed until the pile hole guiding of the pile foundation to be constructed is completed; then starting a hoisting drill winch to lift the hole guiding mechanism out of the pile hole; then, continuously driving the longitudinal moving frame forwards longitudinally to enable the hammering center of the pile driving hammer to be aligned to the pile center of the pile foundation to be constructed; then starting a pile hoisting crane, installing the precast tubular pile to be constructed below the pile hammer, and aligning the lower end of the tubular pile with the pile hole; and finally, starting a pile driving hammer of the pile driving and hole guiding integrated device, and sinking the precast tubular pile to be constructed into a pile hole of the pile foundation by using the pile driving hammer to complete pile foundation construction. The pile driving method realizes the hammering pile driving of the suspended self-supporting type bridge pilot hole, can realize the hammering pile sinking construction of the pilot hole on the hard soil foundation, can realize the pile foundation construction in complicated engineering geological conditions or in rivers, seas and lakes, has convenient operation flow, can improve the construction efficiency, saves the construction cost, ensures the pile forming quality, and improves the construction efficiency and the engineering progress.
Drawings
Fig. 1 is an overall side view of the bridging piling and hole guiding integrated machine according to the first embodiment of the invention.
Fig. 2 is a perspective view of the pile-drilling and guiding integrated device in fig. 1.
Fig. 3 is a partial enlarged view of fig. 2-a.
Fig. 4 is a right side view of fig. 2.
Fig. 5 is a rear side view of fig. 2.
Fig. 6 is an overall side view of the bridging piling and hole guiding integrated machine according to the second embodiment of the invention.
Fig. 7 is a perspective view of the pile-drilling integrated device of fig. 6.
Fig. 8 is a partially enlarged structural view of fig. 7-B.
Fig. 9 is a right side view of fig. 7.
Fig. 10 is a rear side view of fig. 7.
Fig. 11 is a schematic perspective view of the rotary jet drill rod and the rotary jet stirring drill bit of the present invention.
Fig. 12 is a side view of a bridging piling and pilot hole all-in-one machine according to a third embodiment of the invention.
Fig. 13 is a perspective view of the integrated pile-drilling device in fig. 12.
Fig. 14 is a right side view of fig. 13.
Fig. 15 is a rear side view of fig. 13.
Fig. 16 is a perspective view of a pile-driving and hole-guiding integrated device according to a fourth embodiment of the invention.
Fig. 17 is a rear side view of fig. 16.
Fig. 18 is a cross-sectional view of the lead drill rod of fig. 16.
FIG. 19 is a cross-sectional view of the under-reamed bit of FIG. 16 in a closed condition of the under-reamed cutters.
FIG. 20 is a cross-sectional view of the under-reamed bit of FIG. 16 shown with the under-reamed cutters deployed.
Fig. 21 is a rear view of a crane block of the bridging mechanism.
Fig. 22 is a rear view of the stay cable mechanism of the bridging mechanism.
Figure 23 is a rear view of the front center leg of the bridging mechanism.
Figure 24 is a rear view of the rear center leg of the bridging mechanism.
Figure 25 is a rear view of the rear leg of the bridging mechanism.
Figure 26 is a rear view of the front leg of the bridging mechanism.
Description of reference numerals:
10. a bridging mechanism 11, a first main beam, 12, a second main beam, 13, a stay cable mechanism 131, a stay beam, 132, a first stay support column, 133, a second stay support column, 134, a first front stay cable, 135, a first rear stay cable, 14, a hoisting crown block, 15, a front suspension section, 161, a first front middle leg, 162, a second front middle leg, 171, a first rear middle leg, 172, a second rear middle leg, 181, a first rear leg, 182, a second rear leg, 19, a front leg, 20, a pile, 21, a first pile mechanism, 22, a second pile mechanism, 30, a pile driving hole integration device, 31, a hammer, 311, a pile hammer winch, 312, a hammer wire rope, 32, a column, a tower 321, a column upper section, 322, a column upper section, a column pile section, 323, a column lower section, 33, a pile driving platform, 331, a first platform pile driving support frame, 332. a second platform support frame 34, a longitudinal moving frame 35, a hanging drill winch 36, a hanging drill steel wire rope 37, a transverse driving oil cylinder 38, a longitudinal driving mechanism 381, a first driving oil cylinder 382, a second driving oil cylinder 411, an electric power head 412, a first spiral drill rod 421, a follow-up frame 4211, a first pipe inlet 4212, a second pipe inlet 4213, a follow-up retainer 4214, a rotary support chassis 4215, a follow-up pulley block 422, a first hydraulic pressure 423, a rotary spray drill rod 424, a rotary spray stirring drill bit 4241, a first pipe outlet 4242, a second pipe outlet 4243, a stirring drill rod 4244, a spiral drill blade 4245, an alloy drill bit 4246, a stirring blade, 431, a top support frame 432, a second hydraulic power head 433, a telescopic drill rod 4331, an outer layer rod 4332, an inner layer rod, 434, a spiral drill tool, 441, a guide frame 4411, an input pipe orifice, 4412. a cement input pipe orifice 442, a drill rod power head 443, a guide hole drill rod, 4431, a drill rod layer, 4432, a drill rod layer, 4433, a drill rod layer, 4434, a drill rod layer, 444, a second spiral drill rod, 4441, a hydraulic drive pipe, 4442, a cement delivery pipe, 445, a bottom expanding drill bit, 4451, a drill bit body, 4452, a hydraulic drive device, 4452a, a hydraulic oil cylinder, 4452b, a telescopic rod, 4452c, a rack, 4453, a bottom expanding digging cutter, 4453a, a cutter head, 4453b, a digging cutter tooth, 4454, a cement release port, 4455, a transmission gear, 4456, a lower spacer, 51, a first support rod, 52, a second support rod, 53, a first support cylinder, 54, a second support cylinder, 55, a third pile hoisting mechanism, 551, a third pile hoisting machine, 552, a third hoisting pulley block pile, 553, a third support rod, 56, a working platform, a hook, a first transition guide pulley, 58. the device comprises a second transition guide pulley 60, a top pulley frame 61, a drill rod pulley block 62, a hanging hammer pulley block 63, a first steering pulley 64, a second steering pulley 65, a third steering pulley 66, a fourth steering pulley 70, a tubular pile 81, a high-pressure air compressor 82 and a cement slurry pump station.
Detailed Description
The following provides a detailed description of embodiments of the invention.
Referring to fig. 1 to 26, the bridging pile-driving and hole-guiding integrated machine provided by the present invention comprises a bridging mechanism 10, a pile-driving and hole-guiding integrated device 30, and a pile-lifting crown block 20, wherein the bridging mechanism 10 comprises a first main beam 11, a second main beam 12, a cable-stayed mechanism 13, and two lifting crown blocks 14, the cable-stayed mechanism 13 comprises a cable-stayed cross beam 131, a first cable-stayed support column 132, and a second cable-stayed support column 133, the lower ends of the first cable-stayed support column 132 and the second cable-stayed support column 133 are respectively connected with the middle portions of the first main beam 11 and the second main beam 12, the two ends of the cable-stayed cross beam 131 are respectively connected with the upper ends of the first cable-stayed support column 132 and the second cable-stayed support column 133, the two ends of the two lifting crown blocks 14 are respectively connected with the top surfaces of the rear ends of the first main beam 11 and the second main beam 12 in a longitudinal sliding manner, the bridging mechanism 10 is suspended in front through the front ends of the first main beam 11 and the second main beam 12 to form a front-extending suspended section 15, the pile driving and guiding integrated device 30 comprises a pile driving hammer 31, a vertical column tower 32, a pile frame mounting platform 33, a longitudinal moving frame 34, a guiding hole mechanism, a pile driving winch 311, a hanging drill winch 35, a hanging hammer steel wire rope 312 and a hanging drill steel wire rope 36, the pile driving and guiding integrated device 30 is longitudinally and slidably connected with the top surface of the forward extending suspended section 15 through two sides of the longitudinal moving frame 34, and the pile frame mounting platform 33 is transversely and slidably connected with the top surface of the longitudinal moving frame 34; the upright post tower 32 vertically penetrates through the pile frame mounting platform 33 and is fixedly connected with the pile frame mounting platform, the pile driving hammer 31 is vertically and slidably connected with the rear side face of the upright post tower 32, the hole guiding mechanism is vertically and slidably connected with the front side face of the upright post tower 32, the hanging and drilling winch 35 and the hanging and drilling winch 311 are respectively mounted on the pile frame mounting platform 33 and are respectively positioned at the left side and the right side of the upright post tower 32, the hanging and drilling winch 311 is connected with the upper end of the pile driving hammer 31 in a lifting and driving mode through a hanging and drilling steel wire rope 312, and the hanging and drilling winch 35 is connected with the upper end of the hole guiding mechanism in a lifting and driving mode through a hanging and drilling steel wire rope 36.
The two girders are used as bridges and cantilever girders, the stay cable mechanism 13 comprises a stay cross beam 131, a first stay support 132 and a second stay support 133, two ends of the stay cross beam 131 are respectively connected with the upper ends of the first stay support 132 and the second stay support 133 to form a portal frame, and the portal frame is arranged in the middle of the first girder 11 and the second girder 12 to improve the overall stability of the first girder 11 and the second girder 12 and the safety of the pile driving mechanism in suspension; the two hoisting crown blocks 14 are used for hoisting and installing the prefabricated beam slab, and the two hoisting crown blocks 14 can be respectively moved to the rear ends of the first main beam 11 and the second main beam 12 in the process of the pile driving and hole guiding integrated device 30 in the hole guiding pile driving process, so that the balance weights at the rear ends of the first main beam 11 and the second main beam 12 are increased, and the suspension stability of the pile driving and hole guiding integrated device 30 is improved; the pile-driving and hole-guiding integrated device 30 comprises a pile hammer 31, a stand column tower 32, a pile frame mounting platform 33, a longitudinal moving frame 34, a hole guiding mechanism, a hanging hammer winch 311, a hanging drill winch 35, a hanging hammer steel wire rope 312 and a hanging drill steel wire rope 36, wherein the pile hammer 31 and the hole guiding mechanism are respectively mounted on the front side and the rear side of the stand column tower 32, so that the hole guiding mechanism can be used for firstly guiding holes in a foundation soil layer, and then the pile hammer 31 is used for hammering and driving the prefabricated pipe pile 70 into the foundation with the guided pile holes; when in use, the first main beam 11 and the second main beam 12 of the bridge erecting mechanism 10 extend forwards, so that the extending suspension section 15 of the bridge erecting mechanism 10 is suspended above a pile foundation to be constructed; longitudinally driving the longitudinally moving frame 34, longitudinally moving the pile-driving and hole-guiding integrated device 30 to the front end of the forward-extending suspension section 15, and transversely driving the pile frame mounting platform 33 to make the hole-guiding center of the hole-guiding mechanism aligned with the pile center of the pile foundation to be constructed; then, starting a hole guiding mechanism of the pile-driving hole guiding integrated device 30, and carrying out hole guiding construction operation on a pile position of a pile foundation to be constructed until the pile hole guiding of the pile foundation to be constructed is completed; then, starting the hoisting drill winch 35 to lift the hole guiding mechanism out of the pile hole; then, continuously driving the longitudinal moving frame 34 longitudinally forward to enable the hammering center of the pile driving hammer 31 to be aligned with the pile center of the pile foundation to be constructed; then, the pile hoisting crane 20 is started, the precast tubular pile 70 to be constructed is installed below the pile hammer 31, and the lower end of the tubular pile 70 is aligned with the pile hole; and finally, starting the pile driving hammer 31 of the pile driving and hole guiding integrated device 30, and sinking the precast tubular pile 70 to be constructed into the pile hole of the pile foundation by using the pile driving hammer 31 to complete the pile foundation construction. This bridging pile driver pilot hole all-in-one establishes hammering and two kinds of pile driving device of pilot hole on bridging mechanism 10, the drive of unsettled self-supporting formula bridging pilot hole hammering has been realized, pilot hole hammering pile sinking construction has been realized on the hardpan foundation, with two kinds of pile driving device integrated designs of hammering and pilot hole, indirectly alleviate the weight of the outstanding sky department of the bridge girder erection machine anteextension, avoid reducing by a wide margin the length that can overhang, establish slip hanging pile overhead traveling crane 20 in the below of the unsettled department of bridging mechanism 10 in addition, utilize hanging pile overhead traveling crane 20 directly to install tubular pile 70 to 31 below of pile hammer, make the installation of tubular pile 70 more convenient, practice thrift construction cost, guarantee the pile quality, construction efficiency and engineering progress are improved.
In which the pilot mechanism of the pile-driving pilot integrated device 30 of the present invention can be variously embodied, the present invention will be more fully described below with reference to the related drawings in order to facilitate understanding of the present invention. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
A first embodiment;
referring to fig. 1 to 5, the hole guiding mechanism in the pile-driving hole guiding integrated device 30 includes an electric power head 411 and a first auger 412, the electric power head 411 is vertically and slidably connected with the front side surface of the upright tower 32, the first auger 412 is mounted at the lower end of the rotary output shaft of the electric power head 411, and the drill hoisting machine 35 is connected with the upper end of the electric power head 411 in a lifting and driving manner through a drill hoisting steel wire rope 36. The hole guiding mechanism of the first embodiment is composed of an electric power head 411 and a first auger stem 412, wherein the electric power head 411 and the first auger stem 412 are installed on the front side surface of the upright tower 32, when the hole guiding mechanism is used, a hole can be drilled and guided by using the first auger stem 412, the electric power head 411 provides rotary power for the first auger stem 412, and the hole can be drilled and guided in a sandy soil layer by using the first auger stem 412.
A second embodiment;
referring to fig. 6 to 11, the hole guiding mechanism in the pile driving and hole guiding integrated device 30 includes a follow-up frame 421, a first hydraulic power head 422, a jet grouting drill rod 423, and a jet grouting mixing drill bit 424, the follow-up frame 421 and the first hydraulic power head 422 are vertically and slidably connected to the front side surface of the upright tower 32, the follow-up frame 421 is located above the first hydraulic power head 422, the upper end of the jet grouting drill rod 423 is rotatably connected to the follow-up frame 421, the lower end of the jet grouting drill rod 423 penetrates through the first hydraulic power head 422 and is rotatably connected thereto, the jet grouting mixing drill bit 424 is installed at the lower end of the jet grouting drill rod 423, and the drill hoisting machine 35 is connected to the follow-up frame 421 through a drill hoisting wire rope 36 in a hoisting driving manner.
In practical engineering, particularly for pile foundations on some marshland, in order to improve the bearing capacity of the pile foundation, increase the friction force between the tubular pile 70 and the foundation soil layer and reduce the settlement of the pile foundation, a cored mixing pile is mostly adopted for construction, the existing cored mixing pile is composed of a cement mixing pile and a concrete core pile, and before the cement mixing pile is made into initial setting, the tubular pile 70 is driven into the cement mixing pile by a pile driving hammer 31 to form a composite pile; the hole guiding mechanism of the second embodiment comprises a follow-up frame 421, a first hydraulic power head 422, a rotary spraying drill rod 423 and a rotary spraying stirring drill bit 424, wherein the rotary spraying drill rod 423 and the rotary spraying stirring drill bit 424 are installed on the front side surface of the upright tower 32, the first hydraulic power head 422 is used for driving the rotary spraying drill rod 423 to rotate and then driving the rotary spraying stirring drill bit 424 to rotate so as to perform stirring pile construction operation; when the pile driving hammer is used, the rotary jet mixing drill 424 is used for drilling and guiding holes in a foundation soil layer of a pile foundation to be constructed, a cement mixing pile is manufactured in the completed pile hole, and then the pile driving hammer 31 is used for sinking the tubular pile 70 into the pile hole of the pile foundation to complete pile foundation construction of the cored mixing pile.
Wherein, the follow-up frame 421 comprises a first pipe inlet 4211, a second pipe inlet 4212, a follow-up holder 4213 and a rotary support chassis 4214, the follow-up pulley block 4215 is characterized in that a first pipeline and a second pipeline are arranged in the rotary spraying drill rod 423 in a hollow mode, the rotary spraying stirring drill bit 424 comprises a first pipe outlet 4241 and a second pipe outlet 4242, the bottom end face of a follow-up holder 4213 is rotatably connected with the upper end of the rotary spraying drill rod 423 through a rotary support chassis 4214, a first pipe inlet 4211 and a second pipe inlet 4212 are arranged on the front side face of the follow-up holder 4213, a drill lifting wire rope 36 is connected with the top end face of the follow-up holder 4213 in a lifting and driving mode through the follow-up pulley block 4215, the first pipe inlet 4211 of the follow-up frame 421 is communicated with the first pipe outlet 4241 of the rotary spraying stirring drill bit 424 through a first pipeline of the rotary spraying drill rod 423, and the second pipe inlet 4212 of the follow-up frame 421 is communicated with the second pipe outlet 4242 of the rotary spraying stirring drill bit 424 through a second pipeline of the rotary spraying drill rod 423. The first pipe inlet 4211 and the second pipe inlet 4212 are used for conveying air and cement powder respectively, the rotary support chassis 4214 is used for being connected with the rotary spraying drill rod 423 in a rotating mode, the follow-up pulley block 4215 is used for being driven by the lifting of the drill hanging wire rope 36, the lifting is more labor-saving through the pulley block, the rotary spraying stirring drill bit 424 comprises a first pipe outlet 4241 and a second pipe outlet 4242, two pipe outlets are arranged on the rotary spraying stirring drill bit 424 and used for outputting the air and the cement powder respectively, two pipelines are arranged in the hollow portion of the interior of the rotary spraying drill rod 423 and used for communicating the air and the water and the cement powder. The invention in the second embodiment further comprises a high-pressure air compressor 81 and a cement slurry pump station 82, wherein the high-pressure air compressor 81 and the cement slurry pump station 82 are respectively communicated with the first pipe inlet 4211 and the second pipe inlet 4212 through pipelines. The high-pressure air compressor 81 and the cement slurry pump station 82 respectively provide high-pressure air and cement powder for the rotary spraying stirring drill 424.
The rotary spraying stirring drill bit 424 comprises a stirring drill rod 4243, two spiral drill blades 4244, a plurality of alloy drill bits 4245 and a plurality of stirring blades 4246, wherein the two spiral drill blades 4244 are respectively arranged at the lower end of the stirring drill rod 4243, the plurality of alloy drill bits 4245 are respectively arranged at the lower ends of the two spiral drills, the plurality of stirring blades 4246 are uniformly distributed in the middle of the stirring drill rod 4243 in the circumferential direction, and a first pipe inlet 4211 and a second pipe inlet 4212 are respectively arranged at the lower end of the stirring drill rod 4243. The two spiral drilling blades 4244 and the plurality of alloy drilling bits 4245 are used for drilling foundation soil layers, and the plurality of stirring blades 4246 are respectively used for stirring cement slurry conveyed into pile holes to enable the cement slurry to be more uniform.
Third embodiment:
referring to fig. 12 to 15, the hole guiding mechanism in the pile-driving hole guiding integrated device 30 includes a top support frame 431, a second hydraulic power head 432, a telescopic drill rod 433, and a spiral drill 434, wherein the top support frame 431 and the second hydraulic power head 432 are vertically and slidably connected with the front side surface of the column tower 32, the top support frame 431 is located above the second hydraulic power head 432, the second hydraulic power head 432 is provided with a guide sleeve, the telescopic drill rod 433 includes an outer layer rod 4331 and an inner layer rod 4332, the inner layer rod 4332 is telescopically nested inside the outer layer rod 4331, the upper end of the outer layer rod 4331 is rotatably connected with the top support frame 431, the lower end of the outer layer rod 4331 passes through the guide sleeve and is rotatably connected with the guide sleeve, the inner layer rod 4332 telescopically passes through the guide sleeve and is connected with the upper end of the spiral drill 434, and the hanging drill winch 35 is connected with the upper end of the inner layer rod 4332 in a lifting driving manner through a hanging steel wire rope 36.
In the actual engineering, if a thicker sandy soil layer needs to be penetrated and a project with a longer pile length generally exceeds more than 40 meters, if the method of the first embodiment is adopted, the electric power head 411 is used for driving the first spiral drill pipe 412 to drill a hole, the length of the first spiral drill pipe 412 will exceed more than 40 meters, and meanwhile, the height of the upright tower 32 will also reach more than 40 meters, and the weight of the front extending and suspending position of the bridge erecting mechanism 10 is increased, so that the front extending and suspending length of the bridge erecting mechanism 10 is reduced, therefore, the invention provides a third embodiment of the hole guiding mechanism, the hole guiding mechanism comprises a top supporting frame 431, a second hydraulic power head 432, a telescopic drill pipe 433 and a spiral drill 434, the telescopic drill pipe 433 and the spiral drill 434 are installed on the front side surface of the upright tower 32, the spiral drill 434 can realize long pile foundation hole guiding by utilizing the expansion and contraction of the telescopic drill pipe 433 without increasing the height of the upright tower 32, meanwhile, the weight of the front extending suspension part of the bridge erecting mechanism 10 is prevented from being increased; the second hydraulic power head 432 is used for driving the telescopic drill rod 433 and the spiral drilling tool 434 to rotate.
A fourth embodiment.
Referring to fig. 16 to 20, the hole guiding mechanism in the pile-driving and hole-guiding integrated device 30 includes a guide frame 441, a drill rod power head 442, a hole guiding drill rod 443, a second auger rod 444, and a bottom-enlarging drill bit 445, wherein the guide frame 441 and the drill rod power head 442 are vertically and slidably connected with the front side surface of the upright tower 32, the lower end of the hole guiding drill rod 443 penetrates through the drill rod power head 442 and is rotatably connected with the guide frame 442, the upper end of the hole guiding drill rod 443 is rotatably connected with the guide frame 441, the bottom-enlarging drill bit 445 is connected with the lower end of the hole guiding drill rod 443 through the second auger rod 444, and the hanging drill winch 35 is connected with the guide frame 441 in a lifting and driving manner through a hanging drill wire rope 36.
In practical engineering, when the PHC tubular pile 70 cannot be sunk to a sandy soil layer, a drilling tool is generally adopted to drill soil in a cavity of the inner wall of the tubular pile 70 and soil below the cavity, and then hammering is continued to sink the pile, but the drilling tool cannot drill soil below the tubular pile 70, the diameter of the drilled hole is smaller than that of the tubular pile 70, and the tubular pile 70 sinks and is blocked by the soil below the tubular pile wall, so that the pile 70 is difficult to sink; therefore, the hole guiding mechanism of the present invention provides a fourth embodiment, the hole guiding mechanism includes a guiding frame 441, a drill rod power head 442, a hole guiding drill rod 443, a second auger rod 444, and a bottom expanding drill bit 445, the front side surface of the upright tower 32 is provided with the hole guiding drill rod 443, the auger rod, and the bottom expanding drill bit 445, the drill rod power head 442 is used to drive the hole guiding drill rod 443 to rotate, the hole guiding drill rod 443 drives the auger rod and the bottom expanding drill bit 445 to rotate, the hole guiding and expanding construction operation is performed by using the bottom expanding drill bit 445, the bottom expanding drill bit 445 can not only drill the soil in the cavity of the inner wall of the tubular pile 70 and the soil below the cavity, but also expand the soil below the tubular pile 70 by expanding the bottom expanding digging cutter 4453, so as to prevent the tubular pile 70 from sinking and being blocked by the soil below the tubular pile wall, and make the tubular pile 70 sink more easily.
The bottom-expanding drill bit 445 comprises a drill bit main body 4451, a hydraulic driving device 4452, two bottom-expanding digging cutters 4453 and a cement release port 4454, wherein a drill bit accommodating cavity is formed in the drill bit main body 4451 in a hollow mode, the hydraulic driving device 4452 is installed in the drill bit accommodating cavity and is in driving connection with the two bottom-expanding digging cutters 4453, a drill rod accommodating cavity is formed in the guide hole drill rod 443 and the second spiral drill rod 444 in a hollow mode, a hydraulic driving pipe 4441 and a cement conveying pipe 4442 are arranged in the drill rod accommodating cavity, a hydraulic oil input pipe orifice 4411 and a cement input pipe orifice 4412 are arranged on the guide frame 441, the hydraulic oil input pipe orifice 4411 is communicated with the hydraulic driving device 4452 through the hydraulic driving pipe 4441, and the cement input pipe orifice 4412 is communicated with the cement input pipe orifice 4412 through the cement conveying pipe 4442. The hydraulic oil input pipe mouth 4411 is communicated with a hydraulic driving device 4452 through a hydraulic driving pipe 4441, the hydraulic oil input port is communicated with an external hydraulic oil pump station, so that hydraulic driving power is provided for the hydraulic driving device 4452, the hydraulic driving device 4452 is used for controlling the two bottom expanding digging cutters 4453 to be unfolded and folded, the two bottom expanding digging cutters 4453 are unfolded to realize drilling and reaming, when the tubular pile 70 reaches the position near the designated depth and an expanded pile head is required to be arranged at the pile bottom in the pile foundation design, the bottom expanding drill bit 445 can unfold the bottom expanding digging cutters 4453 to the maximum angle to continue digging downwards, and the expanded hole is formed; and finally, communicating the cement inlet pipe orifice 4412 with a cement pump station through a fluid conveying pipe, injecting cement into the enlarged hole by using the cement release port 4454 of the bottom expanding drill 445, and after the enlarged hole is filled with the cement, forming the enlarged pile head of the tubular pile 70, thereby completing the enlargement of the pile head.
Further, the bottom expanding drill bit 445 further comprises two transmission gears 4455, the side walls of the two sides of the middle part of the drill bit accommodating cavity are respectively provided with a first transmission through hole and a second transmission through hole, a cement release port 4454 is arranged on the side wall of the lower end of the drill bit accommodating cavity, one end of the bottom expanding digging cutter 4453 is provided with a cutter head 4453a, the other end of the bottom expanding digging cutter 4453 is provided with digging cutter teeth 4453b, and one end of each of the two bottom expanding digging cutters 4453 is respectively arranged on the outer side surfaces of the first transmission through hole and the second transmission through hole through the digging cutter teeth 4453b and is rotatably connected with the outer side surface of the drill bit main body 4451; two transmission gears 4455 are respectively installed in the first transmission through hole and the second transmission through hole and are respectively engaged with the two digging teeth 4453b, and a hydraulic driving device 4452 is in driving connection with the two transmission gears 4455. When the bottom expanding digging cutter 4453 is used, the hydraulic driving device 4452 drives the two transmission gears 4455 to rotate, the transmission gears 4455 drive the digging cutter teeth 4453b, and the digging cutter teeth 4453b drive the bottom expanding digging cutter 4453 to open.
Further, the bottom expanding drill bit 445 further comprises a lower spacer 4456, the hydraulic driving device 4452 comprises a hydraulic oil cylinder 4452a, an expansion link 4452b and two racks 4452c, the lower spacer 4456 is installed in the middle of the drill bit accommodating cavity, a rotary through hole is formed in the middle of the lower spacer 4456, the hydraulic oil cylinder 4452a is installed at the upper end of the drill bit accommodating cavity, the upper end of the expansion link 4452b is telescopically connected with the hydraulic oil cylinder 4452a, the lower end of the expansion link 4452b penetrates through the rotary through hole and is rotatably connected with the lower spacer 4456, and the two racks 4452c are respectively installed at two sides of the middle of the expansion link 4452b and are respectively meshed with the two transmission gears 4455. When the device is used, the hydraulic oil cylinder 4452a is provided with the telescopic rod 4452b to stretch up and down, the telescopic rod 4452b pulls the two transmission gears 4455 to rotate through the two racks 4452c, and therefore the two bottom expanding digging knives 4453 are driven to open or close.
The guide hole drill rod 443 comprises a first layer of drill rod 4431, a second layer of drill rod 4432, a third layer of drill rod 4433 and a fourth layer of drill rod 4434, wherein the first layer of drill rod 4431, the second layer of drill rod 4432, the third layer of drill rod 4433 and the fourth layer of drill rod 4434 are respectively hollow, the first layer of drill rod 4431, the second layer of drill rod 4432, the third layer of drill rod 4433 and the fourth layer of drill rod 4434 are sequentially sleeved and telescopically connected from the outer layer to the inner layer, the upper end of the first layer of drill rod 4431 is rotatably connected with the guide frame 441, the lower end of the first layer of drill rod 4431 penetrates through the drill rod power head 442 and is rotatably connected with the drill rod power head, and the lower end of the fourth layer of drill rod 4434 is connected with the second spiral drill rod 444. The hole guiding drill stem 443 is formed by telescopic connection of multiple layers of drill stems, and telescopic drilling and hole guiding of the hole guiding drill stem 443 are facilitated.
Further, the pile-driving and hole-guiding integrated device 30 of the present invention further comprises a first support rod 51, a second support rod 52, a first support cylinder 53, a second support cylinder 54, a third pile-hanging mechanism 55, a working platform 56, and a longitudinal driving mechanism 38, the pile frame mounting platform 33 further comprises a first platform support frame 331 and a second platform support frame 332, the first platform support frame 331 and the second platform support frame 332 are respectively mounted at two ends of the front side of the pile frame mounting platform 33, one end of a first support rod 51 is hinged to the left side of the upright tower 32, the other end of the first support rod 51 is hinged to the first platform support frame 331 through a first support oil cylinder 53, one end of a second support rod 52 is hinged to the right side of the upright tower 32, and the other end of the second support rod 52 is hinged to the second platform support frame 332 through a second support oil cylinder 54. The pile frame mounting platform 33, the upright tower 32 and the support rod form a stable triangular support structure, so that the integral pile driving and hole guiding device 30 is more stable in integral structure; the supporting angle of the two supporting rods is adjusted by the two supporting oil cylinders, the structure is simple, and the use is convenient.
The third pile hanging mechanism 55 includes a third pile hanging winch 551, a third pile hanging pulley block 552 and a third hook 553, the third pile hanging winch 551 is installed on the pile frame installation platform 33, the upper end of the third pile hanging pulley block 552 is installed on the upright tower 32, and the third pile hanging winch 551 is connected with the third hook 553 through the third pile hanging pulley block 552. The third pile hoisting mechanism 55 is used to assist the pile hoisting crane 20 in installing the tubular pile 70 below the pile driving hammer 31, so as to improve the installation efficiency of the tubular pile 70.
The upright tower 32 comprises an upright upper section 321, an upright hinge section 322 and an upright lower section 323, the upright tower 32 is fixedly connected with the upright mounting platform 33 through the upright hinge section 322, the upright upper section 321 and the upright lower section 323 are respectively connected with the upper end and the lower end of the upright hinge section 322, and the working platform 56 is mounted on the upright lower section 323. The working platform 56 provides a man-standing platform for the installation operation of the precast tubular pile 70, and particularly in the construction of pile foundations in complicated engineering geological conditions or in rivers, seas and lakes, the working platform 56 is important for operators, so that the cost for erecting a temporary platform in the rivers, seas and lakes is reduced, and the construction cost is saved; the upright tower 32 is divided into a plurality of sections, which facilitates various installation combinations of the upright tower 32. Preferably, the mast tower 32 is a pergola-type mast or a cylinder-type mast. The flower-frame type upright post is of a truss structure formed by welding angle irons, and the cylindrical upright post is formed by connecting a plurality of sections of cylindrical steel pipes.
The pile mounting platform 33 is in transverse driving connection with the longitudinal moving frame 34 through a transverse driving oil cylinder 37. Simple structure and convenient use.
The longitudinal driving mechanism 38 comprises a first driving oil cylinder 381 and a second driving oil cylinder 382, wherein one end of the first driving oil cylinder 381 is connected with the top surface of the first main beam 11, the other end of the first driving oil cylinder 381 is connected with the left side of the longitudinal moving frame 34, one end of the second driving oil cylinder 382 is connected with the top surface of the second main beam 12, and the other end of the second driving oil cylinder 382 is connected with the right side of the longitudinal moving frame 34. The longitudinal moving frame 34 is driven by two driving oil cylinders to realize the longitudinal movement of the longitudinal moving frame 34.
The top pulley yoke 60 comprises a drill rod pulley block 61 and a hanging hammer pulley block 62, the drill rod pulley block 61 and the hanging hammer pulley block 62 are respectively positioned at the front end and the rear end middle position of the top pulley yoke 60, a hanging hammer steel wire rope 312 is connected with the upper end lifting drive of the pile driving hammer 31 through the hanging hammer pulley block 62, and a hanging drill steel wire rope 36 is connected with the upper end lifting drive of the hole guiding mechanism through the drill rod pulley block 61. The lifting of the piling hammer 31 and the telescopic drill rod 433 is more labor-saving.
Further, the top pulley frame 60 further includes a first diverting pulley 63, a second diverting pulley 64, a third diverting pulley 65 and a fourth diverting pulley 66, the first transition guiding pulley 57 and the second transition guiding pulley 58 are respectively installed on the pile frame installation platform 33 and located on the left and right sides of the upright tower 32, the first diverting pulley 63 and the second diverting pulley 64 are respectively installed on the left and right sides of the top pulley frame 60, the third diverting pulley 65 and the fourth diverting pulley 66 are respectively installed in the middle of the top pulley frame 60, one end of the hanging drill steel wire rope 36 is connected with the hanging drill winch 35, the other end of the hanging drill steel wire rope 36 sequentially rounds the first transition guiding pulley 57, the first diverting pulley 63 and the third diverting pulley 65 and is connected with the drill rod 61, one end of the hanging hammer steel wire rope 312 is connected with the hanging hammer winch 311, and the other end of the hanging hammer steel wire rope 312 sequentially rounds the second transition guiding pulley 58, the second diverting pulley 64, the third diverting pulley 65 and the fourth diverting pulley 66, The second diverting pulley 64 and the fourth diverting pulley 66 are connected with the hammerhead pulley block 62. The transition guide pulley and the steering pulley are used for realizing steering driving of the steel wire rope, and the steel wire rope steering device is simple in structure and convenient to use.
The pile hanging crown block 20 comprises a first pile hanging mechanism 21 and a second pile hanging mechanism 22, wherein the first pile hanging mechanism 21 comprises a first pile hanging winch, a first pile hanging pulley block and a first lifting hook, the second pile hanging mechanism 22 comprises a second pile hanging winch, a second pile hanging pulley block and a second lifting hook, the first pile hanging winch and the second pile hanging winch are respectively connected with the bottom surface of the forward extending suspension section 15 in a longitudinal sliding mode, the first lifting hook is connected with the first pile hanging winch through the first pile hanging pulley block, and the second lifting hook is connected with the second pile hanging winch through the second pile hanging pulley block. Two pile hanging mechanisms are used for installing the precast tubular pile 70 to be constructed below the pile driving hammer 31.
Referring to fig. 21 to 26, the bridge erecting mechanism 10 of the present invention further includes a front leg 19, a first front middle leg 161, a second front middle leg 162, a first rear middle leg 171, a second rear middle leg 172, a first rear leg 181, and a second rear leg 182, wherein the first rear leg 181, the first rear middle leg 171, and the first front middle leg 161 are sequentially connected to the bottom surface of the first main beam 11 in a longitudinal sliding manner from back to front, the second rear leg 182, the second rear middle leg 172, and the second front middle leg 162 are sequentially connected to the bottom surface of the second main beam 12 in a longitudinal sliding manner from back to front, and two ends of the top surface of the front leg 19 are connected to the bottom surfaces of the front overhanging sections 15 of the first main beam 11 and the second main beam 12 in a longitudinal sliding manner. The first front middle support leg 161, the second front middle support leg 162, the first rear middle support leg 171 and the second rear middle support leg 172 respectively provide lower end support for the first main beam 11 and the second main beam 12 and facilitate the movement of the bridge erecting mechanism 10; the first rear support leg 181 and the second rear support leg 182 provide limiting support for the rear ends of the first main beam 11 and the second main beam 12, and the rear ends of the first main beam 11 and the second main beam 12 sink too heavily to cause the front ends of the first main beam 11 and the second main beam 12 to warp; when the pile pier below the forward-extending suspended section 15 is completed, the front support leg 19 provides front-end support for the forward-extending suspended section 15.
The stay cable mechanism 13 further includes a first front-end stay cable 134, a second front-end stay cable, a first rear-end stay cable 135, and a second rear-end stay cable, one end of the first front-end stay cable 134 and one end of the first rear-end stay cable 135 are connected to the upper end of the first stay support 132, the other end of the first front-end stay cable 134 and the other end of the first rear-end stay cable 135 are connected to the front end of the first main beam 11 and the rear end of the first main beam 11, respectively, one end of the second front-end stay cable and one end of the second rear-end stay cable are connected to the upper end of the second stay support 133, and the other end of the second front-end stay cable and the other end of the second rear-end stay cable are connected to the front end of the second main beam 12 and the rear end of the second main beam 12, respectively. The four stay cables are connected with the front end and the rear end of the two main beams in a diagonal pulling mode respectively, so that the overall stability of the first main beam 11 and the second main beam 12 is improved, and the safety of the suspended piling of the pile-driving and hole-guiding integrated device 30 is improved.
A piling method of the bridge piling and hole guiding all-in-one machine comprises the following steps:
(1) the first main beam 11 and the second main beam 12 of the forward-extending bridge erecting mechanism 10 enable the forward-extending suspension section 15 of the bridge erecting mechanism 10 to be suspended above a pile foundation to be constructed;
(2) longitudinally driving the longitudinally moving frame 34, longitudinally moving the pile-driving and hole-guiding integrated device 30 to the front end of the forward-extending suspension section 15, and then transversely driving the pile frame mounting platform 33 to make the hole-guiding center of the hole-guiding mechanism aligned with the pile center of the pile foundation to be constructed;
(3) starting a hole guiding mechanism of the pile-driving hole guiding integrated device 30, and carrying out hole guiding construction operation on a pile position of a pile foundation to be constructed until the pile hole guiding of the pile foundation to be constructed is completed;
(4) starting the hoisting and drilling winch 35, and pulling the hole guiding mechanism out of the pile hole;
(5) continuing to drive the longitudinal moving frame 34 longitudinally forward to make the hammering center of the pile driving hammer 31 aligned with the pile center of the pile foundation to be constructed;
(6) starting the pile hoisting crane 20, installing the precast tubular pile 70 to be constructed below the pile hammer 31, and aligning the lower end of the tubular pile 70 with the pile hole;
(7) and starting the pile driving hammer 31 of the pile driving and hole guiding integrated device 30, and sinking the precast tubular pile 70 to be constructed into the pile hole of the pile foundation by using the pile driving hammer 31 to complete the pile foundation construction.
The method comprises the steps that a first main beam 11 and a second main beam 12 of a bridge erecting mechanism 10 extend forwards, and a forward extending suspension section 15 of the bridge erecting mechanism 10 is suspended above a pile foundation to be constructed; longitudinally driving the longitudinally moving frame 34, longitudinally moving the pile-driving and hole-guiding integrated device 30 to the front end of the forward-extending suspension section 15, and transversely driving the pile frame mounting platform 33 to make the hole-guiding center of the hole-guiding mechanism aligned with the pile center of the pile foundation to be constructed; then, starting a hole guiding mechanism of the pile-driving hole guiding integrated device 30, and carrying out hole guiding construction operation on a pile position of a pile foundation to be constructed until the pile hole guiding of the pile foundation to be constructed is completed; then, starting the hoisting drill winch 35 to lift the hole guiding mechanism out of the pile hole; then, continuously driving the longitudinal moving frame 34 longitudinally forward to enable the hammering center of the pile driving hammer 31 to be aligned with the pile center of the pile foundation to be constructed; then, the pile hoisting crane 20 is started, the precast tubular pile 70 to be constructed is installed below the pile hammer 31, and the lower end of the tubular pile 70 is aligned with the pile hole; and finally, starting the pile driving hammer 31 of the pile driving and hole guiding integrated device 30, and sinking the precast tubular pile 70 to be constructed into the pile hole of the pile foundation by using the pile driving hammer 31 to complete the pile foundation construction. The pile driving method realizes the hammering pile driving of the suspended self-supporting type bridge pilot hole, can realize the hammering pile sinking construction of the pilot hole on the hard soil foundation, can realize the pile foundation construction in complicated engineering geological conditions or in rivers, seas and lakes, simplifies the construction operation flow, improves the construction efficiency, saves the construction cost, ensures the pile forming quality, and improves the construction efficiency and the engineering progress.
The above are merely specific embodiments of the present invention, and the scope of the present invention is not limited thereby; any alterations and modifications without departing from the spirit of the invention are within the scope of the invention.

Claims (11)

1. A bridge-erecting pile-driving hole-guiding integrated machine is characterized by comprising a bridge-erecting mechanism, a pile-driving hole-guiding integrated device and pile-lifting overhead traveling cranes, wherein the bridge-erecting mechanism comprises a first main beam, a second main beam, a stay cable mechanism and two pile-lifting overhead traveling cranes, the stay cable mechanism comprises a stay cable cross beam, a first stay cable support column and a second stay cable support column, the lower ends of the first stay cable support column and the second stay cable support column are respectively connected with the middle parts of the first main beam and the second main beam, the two ends of the stay cable cross beam are respectively connected with the upper ends of the first stay cable support column and the second stay cable support column, the two ends of the two pile-lifting overhead traveling cranes are respectively connected with the top surfaces of the rear ends of the first main beam and the second main beam in a longitudinal sliding manner, the bridge-erecting mechanism is suspended through the front ends of the first main beam and the second main beam in a forward extending manner to form a forward extending suspended section, and the pile-lifting overhead traveling cranes are connected with the bottom surface of the forward extending suspended section in a longitudinal sliding manner, the pile driving and hole guiding integrated device comprises a pile hammer, an upright post tower, a pile frame mounting platform, a longitudinal moving frame, a hole guiding mechanism, a hanging hammer winch, a hanging drill winch, a hanging hammer steel wire rope and a hanging drill steel wire rope, the pile driving and hole guiding integrated device is longitudinally and slidably connected with the top surface of the forward extending suspension section through two sides of the longitudinal moving frame, and the pile frame mounting platform is transversely and slidably connected with the top surface of the longitudinal moving frame; the pile frame mounting platform is vertically penetrated by the upright post tower and fixedly connected with the upright post tower, the pile hammer is vertically and slidably connected with the rear side surface of the upright post tower, the hole guiding mechanism is vertically and slidably connected with the front side surface of the upright post tower, the hanging drill winch and the hanging hammer winch are respectively mounted on the pile frame mounting platform and are respectively positioned at the left side and the right side of the upright post tower, the hanging hammer winch is connected with the upper end of the pile hammer in a lifting driving way through the hanging hammer steel wire rope, and the hanging drill winch is connected with the upper end of the hole guiding mechanism in a lifting driving way through the hanging drill steel wire rope;
the hole guiding mechanism comprises a guide frame, a drill rod power head, a hole guiding drill rod, a second spiral drill rod and a bottom expanding drill bit, the guide frame and the drill rod power head are vertically and slidably connected with the front side surface of the upright tower, the lower end of the hole guiding drill rod penetrates through the drill rod power head and is rotatably connected with the drill rod power head, the upper end of the hole guiding drill rod is rotatably connected with the guide frame, the bottom expanding drill bit is connected with the lower end of the hole guiding drill rod through the second spiral drill rod, and the hanging drill winch is connected with the guide frame in a lifting and driving mode through the hanging drill wire rope; the bottom expanding drill bit comprises a drill bit main body, a hydraulic driving device, two bottom expanding digging cutters, a cement releasing port, two transmission gears and a lower spacer bush, wherein the drill bit main body is internally hollow to form a drill bit containing cavity, the hydraulic driving device is installed in the drill bit containing cavity and is in driving connection with the two bottom expanding digging cutters, the hole leading drill rod and the second spiral drill rod are internally hollow to form a drill rod containing cavity, a hydraulic driving pipe and a cement conveying pipe are arranged in the drill rod containing cavity, a hydraulic oil input pipe port and a cement input pipe port are arranged on the guide frame, the hydraulic oil input pipe port is communicated with the hydraulic driving device through the hydraulic driving pipe, and the cement input pipe port is communicated with the cement input pipe port through the cement conveying pipe;
the side walls of the two sides of the middle part of the drill bit accommodating cavity are respectively provided with a first transmission through hole and a second transmission through hole, the cement release port is arranged on the side wall of the lower end of the drill bit accommodating cavity, one end of the bottom expanding digging cutter is provided with a cutter head, the other end of the bottom expanding digging cutter is provided with digging cutter teeth, and the two bottom expanding digging cutters are respectively arranged on the outer side surfaces of the first transmission through hole and the second transmission through hole through one ends of the digging cutter teeth and are rotationally connected with the outer side surface of the drill bit main body; the two transmission gears are respectively arranged in the first transmission through hole and the second transmission through hole and are respectively meshed with the two digging cutter teeth, and the hydraulic driving device is in driving connection with the two transmission gears; the hydraulic driving device comprises a hydraulic oil cylinder, a telescopic rod and two racks, the lower spacer bush is installed in the middle of the drill bit containing cavity, a rotary through hole is formed in the middle of the lower spacer bush, the hydraulic oil cylinder is installed at the upper end of the drill bit containing cavity, the upper end of the telescopic rod is in telescopic connection with the hydraulic oil cylinder, the lower end of the telescopic rod penetrates through the rotary through hole and is in rotary connection with the lower spacer bush, and the two racks are installed on two sides of the middle of the telescopic rod respectively and are in meshed connection with the two transmission gears respectively.
2. The bridging piling and hole guiding all-in-one machine according to claim 1, wherein the hole guiding drill rod comprises a first drill rod, a second drill rod, a third drill rod and a fourth drill rod, the first drill rod, the second drill rod, the third drill rod and the fourth drill rod are respectively hollow, the first drill rod, the second drill rod, the third drill rod and the fourth drill rod are sequentially sleeved with a telescopic connection from an outer layer to an inner layer, the upper end of the first drill rod is rotatably connected with the guide frame, the lower end of the first drill rod penetrates through the drill rod power head and is rotatably connected with the drill rod power head, and the lower end of the fourth drill rod is connected with the second spiral drill rod.
3. The bridge piling and pilot hole all-in-one machine as claimed in any one of claims 1 to 2, wherein the pile hoisting crane comprises a first pile hoisting mechanism and a second pile hoisting mechanism, the first pile hoisting mechanism comprises a first pile hoisting machine, a first pile hoisting pulley block and a first hook, the second pile hoisting mechanism comprises a second pile hoisting machine, a second pile hoisting pulley block and a second hook, the first pile hoisting machine and the second pile hoisting machine are respectively connected with the bottom surface of the forward extending suspension section in a longitudinal sliding manner, the first hook is connected with the first pile hoisting machine through the first pile hoisting pulley block, and the second hook is connected with the second pile hoisting machine through the second pile hoisting pulley block.
4. The bridge piling and pilot hole all-in-one machine according to any one of claims 1 to 2, wherein the pile piling and pilot hole all-in-one machine further comprises a first support rod, a second support rod, a first support cylinder and a second support cylinder, the pile frame mounting platform further comprises a first platform support frame and a second platform support frame, the first platform support frame and the second platform support frame are respectively mounted at two ends of the front side surface of the pile frame mounting platform, one end of the first support rod is hinged with the left side surface of the upright tower, the other end of the first support rod is hinged with the first platform support frame through the first support cylinder, one end of the second support rod is hinged with the right side surface of the upright tower, and the other end of the second support rod is hinged with the second platform support frame through the second support cylinder; the upright post tower is a flower shelf type upright post or a cylinder type upright post.
5. The bridge piling and pilot hole all-in-one machine of claim 4, wherein the pile piling and pilot hole all-in-one device further comprises a third pile hoisting mechanism, the third pile hoisting mechanism comprises a third pile hoisting machine, a third pile hoisting pulley block and a third hook, the third pile hoisting machine is mounted on the pile frame mounting platform, the upper end of the third pile hoisting pulley block is mounted on the upright tower, and the third pile hoisting machine is connected with the third hook through the third pile hoisting pulley block.
6. The bridging piling and pilot hole all-in-one machine as claimed in claim 5, wherein the piling pilot hole all-in-one machine further comprises a working platform, the upright tower comprises an upright upper section, an upright hinge section and an upright lower section, the upright tower is fixedly connected with the pile frame mounting platform through the upright hinge section, the upright upper section and the upright lower section are respectively connected with the upper end and the lower end of the upright hinge section, and the working platform is mounted on the upright lower section.
7. The bridge piling and pilot hole all-in-one machine of claim 6, wherein the pile piling and pilot hole all-in-one device further comprises a transverse driving oil cylinder, and the pile frame mounting platform is in transverse driving connection with the longitudinal moving frame through the transverse driving oil cylinder; the pile and guide hole integrated device further comprises a longitudinal driving mechanism, wherein the longitudinal driving mechanism comprises a first driving oil cylinder and a second driving oil cylinder, one end of the first driving oil cylinder is connected with the top surface of the first main beam, the other end of the first driving oil cylinder is connected with the left side of the longitudinal moving frame, one end of the second driving oil cylinder is connected with the top surface of the second main beam, and the other end of the second driving oil cylinder is connected with the right side of the longitudinal moving frame.
8. The bridge piling and pilot hole all-in-one machine as claimed in claim 7, wherein the pile piling and pilot hole all-in-one device further comprises a top pulley yoke, the top pulley yoke comprises a drill pipe pulley block and a drop hammer pulley block, the drill pipe pulley block and the drop hammer pulley block are respectively located at the middle positions of the front end and the rear end of the top pulley yoke, the drop hammer steel wire rope is connected with the upper end lifting drive of the pile driving hammer through the drop hammer pulley block, and the drop drilling steel wire rope is connected with the upper end lifting drive of the pilot hole mechanism through the drill pipe pulley block.
9. The bridge piling and hole leading integrated machine according to claim 8, wherein the pile piling and hole leading integrated device further comprises a first transition guide pulley and a second transition guide pulley, the top pulley frame further comprises a first steering pulley, a second steering pulley, a third steering pulley and a fourth steering pulley, the first transition guide pulley and the second transition guide pulley are respectively installed on the pile frame installation platform and located on the left side and the right side of the upright tower frame, the first steering pulley and the second steering pulley are respectively installed on the left side and the right side of the top pulley frame, the third steering pulley and the fourth steering pulley are respectively installed in the middle of the top pulley frame, one end of the hanging and drilling steel wire rope is connected with the hanging and drilling winch, and the other end of the hanging and drilling steel wire rope sequentially passes around the first transition guide pulley, the first steering pulley, the third steering pulley and the fourth steering pulley, The third steering pulley is connected with the drill pipe pulley block, one end of the hanging hammer steel wire rope is connected with the hanging hammer winch, and the other end of the hanging hammer steel wire rope sequentially bypasses the second transition guide pulley, the second steering pulley and the fourth steering pulley to be connected with the hanging hammer pulley block; the bridge erecting mechanism further comprises a front support leg, a first front middle support leg, a second front middle support leg, a first rear middle support leg, a second rear middle support leg, a first rear support leg and a second rear support leg, wherein the first rear support leg, the first rear middle support leg and the first front middle support leg are sequentially connected with the bottom surface of the first main beam in a longitudinal sliding mode from back to front, the second rear support leg, the second rear middle support leg and the second front middle support leg are sequentially connected with the bottom surface of the second main beam in a longitudinal sliding mode from back to front, and two ends of the top surface of the front support leg are connected with the bottom surface of the front extending suspending section of the first main beam and the second main beam in a longitudinal sliding mode.
10. The bridge piling and hole guiding integrated machine according to claim 9, wherein the stay cable mechanism further comprises a first front-end stay cable, a second front-end stay cable, a first rear-end stay cable, and a second rear-end stay cable, one end of the first front-end stay cable and one end of the first rear-end stay cable are connected to the upper end of the first stay cable support post, the other end of the first front-end stay cable and the other end of the first rear-end stay cable are connected to the front end of the first main beam and the rear end of the first main beam respectively, one end of the second front-end stay cable and one end of the second rear-end stay cable are connected to the upper end of the second stay cable support post, and the other end of the second front-end stay cable and the other end of the second rear-end stay cable are connected to the front end of the second main beam and the rear end of the second main beam respectively.
11. A piling method using the bridge piling and pilot hole integrating machine as claimed in any one of claims 1 to 10, comprising the steps of:
(1) the first main beam and the second main beam extend forwards to enable the extending suspension section of the bridge erecting mechanism to be suspended above the pile foundation to be constructed;
(2) longitudinally driving the longitudinal moving frame, longitudinally moving the pile driving and hole guiding integrated device to the front end of the front extending suspension section, and then transversely driving the pile frame mounting platform to enable the hole guiding center of the hole guiding mechanism to be aligned with the pile center of a pile foundation to be constructed;
(3) starting a hole guiding mechanism of the pile-driving hole guiding integrated device, and carrying out hole guiding construction operation on a pile position of a pile foundation to be constructed until the pile hole guiding of the pile foundation to be constructed is completed;
(4) starting the hoisting drill winch to lift the hole guiding mechanism out of the pile hole;
(5) continuously driving the longitudinal moving frame forwards longitudinally to enable the hammering center of the pile driving hammer to be aligned to the pile center of the pile foundation to be constructed;
(6) starting the pile hoisting crown block, installing the precast tubular pile to be constructed below the pile hammer, and aligning the lower end of the tubular pile to the pile hole;
(7) and starting the pile driving hammer of the pile driving and hole guiding integrated device, and utilizing the pile driving hammer to sink the precast tubular pile to be constructed into the pile hole of the pile foundation to complete the pile foundation construction.
CN202110497786.2A 2021-05-08 2021-05-08 Bridge erecting and pile driving and hole guiding integrated machine and pile driving method thereof Active CN113216176B (en)

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CN114933247B (en) * 2022-04-12 2023-10-03 中国海洋大学 Intelligent construction equipment and construction process thereof
CN115059071A (en) * 2022-06-14 2022-09-16 福建省岩田基建工程技术有限公司 Pile sinking construction method for precast pile

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