CN218622226U - Combined type construction system for driving hammer driven immersed tube cast-in-place pile - Google Patents
Combined type construction system for driving hammer driven immersed tube cast-in-place pile Download PDFInfo
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- CN218622226U CN218622226U CN202222642635.4U CN202222642635U CN218622226U CN 218622226 U CN218622226 U CN 218622226U CN 202222642635 U CN202222642635 U CN 202222642635U CN 218622226 U CN218622226 U CN 218622226U
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Abstract
The utility model discloses a combined type hoisting hammering sinking pipe cast-in-place pile construction system, which comprises a hole leading system, a pile driving system and a pulling-assisted system, wherein the hole leading system comprises a hole leading machine and a positioning pile casing, the power end of the hole leading machine is connected with the upper end of the positioning pile casing and is used for vertically pressing the positioning pile casing into the soil body and taking soil from the positioning pile casing; the pile driving system comprises a crawler crane, a hydraulic pile driving hammer and a steel sleeve, wherein the hoisting end of the crawler crane is connected with the hydraulic pile driving hammer, the striking end of the hydraulic pile driving hammer faces downwards to the upper end of the steel sleeve, and the steel sleeve and the positioning pile casing are coaxially arranged; the pulling-assisted system comprises a high-frequency vibration hammer. The beneficial effects of the utility model are that: the guide support is cancelled on the basis of the existing high pile frame hammering process, the pipe sinking construction is carried out by adopting a mode that a crawler crane is used for hoisting and hammering a hydraulic hammer to directly hammer, the equipment is sufficient in stock, modification is not needed, the production construction can be immediately carried out, the construction efficiency is high, the pile forming speed is high, and the progress of the construction period is ensured.
Description
Technical Field
The utility model relates to a immersed tube bored concrete pile construction technique, concretely relates to modular hang and beat hammering immersed tube and pay close attention to a pile construction system.
Background
The pipe sinking cast-in-place pile is one of many types of pile foundations in civil construction engineering, and is characterized by that it adopts a steel pipe (i.e. sleeve pipe) matched with design size of pile, and after the end portion is covered with pile tip and sunk into the soil, the steel bar skeleton is suspended in the sleeve pipe, then the concrete is poured and the pipe is drawn out while vibrating, and the concrete is tamped by utilizing the vibration produced when the pipe is drawn out so as to form the required cast-in-place pile. The pipe-sinking cast-in-place pile is suitable for the conditions of underground water, quicksand and silt.
In recent years, in coastal areas and peripheral building foundation construction, because the pile pressing force of a traditional immersed tube cast-in-place pile pressing steel pile casings under sand filling layers and middle sand layer parts is large, pile pressing is difficult, part of pile holes still cannot press the pile casings under a limit state, and immersed tube construction is assisted in actual construction in a mode of leading the holes to penetrate the sand filling layers and the middle sand layers in advance.
The construction method of the immersed tube cast-in-place pile comprises two construction methods, namely a static pressure immersed tube construction process adopting a static pressure immersed tube cast-in-place pile machine, and a construction method adopting a high pile frame hydraulic hammer to blow the immersed tube cast-in-place pile machine and hammer to blow the immersed tube cast-in-place pile. However, most of the existing static pressure immersed tube cast-in-place pile machines are refitted into static pressure precast tubular pile machines, and the existing retained static pressure immersed tube cast-in-place pile machines which can meet the pressure value driving capability are few in number and old, and high in later maintenance rate. The high pile frame hydraulic hammer driven sinking pipe cast-in-place pile machine platform is less and less in market and influenced by coastal wind power, and the high pile frame hydraulic hammer driven sinking pipe cast-in-place pile machine platform cannot arrange night overtime construction due to safety factor consideration. In addition, the externally used walking type high pile frame hydraulic hammering pile driver is constructed, the hydraulic pile hammer, the steel sleeve and the high-frequency vibration hammer are all arranged on a pile driver guide bracket, and the guide bracket is used for guiding and positioning the steel pile casing; the equipment has few resources in the market and cannot meet the requirements of site construction progress; the steel sleeve is installed on the piling equipment in the construction process, the next pile foundation construction can be carried out only after the pile foundation is pulled out from the pipe sinking to the completion of the pile foundation construction, and the process flow water alternate construction can not be carried out.
Disclosure of Invention
An object of the utility model is to provide a modular hang and strike hammering and hit immersed tube bored concrete pile construction system to prior art's not enough.
The utility model adopts the technical proposal that: a combined construction system for hanging, striking, hammering and driving a sinking pipe cast-in-place pile comprises a hole guiding system, a pile driving system and a pulling-assisted system, wherein,
the hole guiding system comprises a hole guiding machine and a positioning protective cylinder, wherein the power end of the hole guiding machine is connected with the upper end of the positioning protective cylinder and is used for vertically pressing the positioning protective cylinder into the soil body and taking soil from the positioning protective cylinder; the positioning protective cylinder is pressed into the soil body to a set depth and then separated from the hole leading machine;
the pile driving system comprises a crawler crane, a hydraulic pile driving hammer and a steel sleeve, wherein the hoisting end of the crawler crane is connected with the hydraulic pile driving hammer, the hitting end of the hydraulic pile driving hammer faces downwards to the upper end of the steel sleeve, the steel sleeve and the positioning pile casing are coaxially arranged, and the hydraulic pile driving hammer is used for driving a plurality of steel sleeves into soil in sequence from the positioning pile casing;
the pulling-assisted system comprises a high-frequency vibration hammer, and the high-frequency vibration hammer is used for pulling the steel sleeve out of the soil body.
According to the scheme, the top of the positioning casing is provided with a limit ring plate, and the inner ring of the limit ring is matched with the steel sleeve; and a limiting steel bar is arranged below the limiting ring plate and is positioned between the inner wall of the positioning protective sleeve and the outer wall of the steel sleeve, so that the steel sleeve is limited.
According to the scheme, the limiting ring plate is of a split structure and is formed by splicing two semi-annular plates, and the handles are arranged on the upper portions of the two semi-annular plates.
According to the scheme, the pile shoe is arranged at the lower end of the first section of steel casing.
According to the scheme, the lower end of the pile shoe is pointed.
According to the scheme, the pile shoe is connected with the anti-floating cage steel bar barb, and the anti-floating cage steel bar barb can be connected with the steel bar derrick at the bottom of the pile foundation steel bar cage.
According to the scheme, the lower end of the high-frequency vibration hammer is provided with a clamp, and the lower end of the clamp forms a radial inward bulge; the upper portion outer wall of steel casing pipe set up with protruding adaptation the card hole, during the tube drawing, the protruding card of anchor clamps is gone into steel casing pipe card downtheholely, and the high frequency vibration hammer vibrates the limit and utilizes anchor clamps to go up to draw steel casing pipe.
The utility model has the advantages that:
1. the equipment is put into production quickly, and the construction efficiency is high. The utility model discloses cancelled guide bracket on the basis of current high pile frame hammering technology, the mode that adopts the crawler crane to hang and beat the direct hammering of hydraulic hammer carries out immersed tube construction, and equipment spot goods is sufficient, need not the repacking, can put into production the construction immediately, and the efficiency of construction is high, and it is fast to become the stake, has guaranteed the time limit for a project progress.
2. The single pile has high bearing capacity and stable and reliable pile forming quality. Arranging a steel pile shoe to ensure that no sediment is in a hole, welding a hook on the steel pile shoe, connecting the bottom of the steel reinforcement cage with the # -shaped frame, and preventing the cage from floating when the concrete is poured by pulling the pipe; meanwhile, the steel sleeve is subjected to full casing follow-up in the hammering process, the situations of hole collapse, hole shrinkage, inclusion, pile breaking and the like in the pile forming process are effectively avoided, the surrounding soil body is extruded compactly in the hammering process, the side resistance of the pile body is effectively increased, and the bearing capacity of the pile body is increased. The steel sleeve is pulled up by adopting the high-frequency vibration hammer, the steel sleeve and the reinforcement cage are effectively separated through high-frequency vibration, the concrete vibration compacting effect is achieved, and the pile foundation construction quality is ensured.
3. The pile sinking capability is strong, and the turnover utilization rate is high. The pile shoe is designed, the pile shoe can penetrate high-density or hard soil layers such as a thick sand layer, a cracked interlayer or an boulder and the like in the hammering process through the forms of adjusting the stroke height of the hydraulic impact hammer or increasing the number of oil pumps and the like, and the purpose of effectively forming holes is achieved; and meanwhile, the steel casing is repeatedly recycled, so that the pile foundation pore-forming state is ensured to reach a flow construction state, and the cost is reduced.
4. Wide applicability and good environmental protection benefit. The process is not only suitable for various complex geological conditions such as thick sand layers, high water levels, strong corrosion and the like, but also can flexibly select the pile length (more than 40 meters) and the pile diameter by welding the steel sleeve, thereby realizing dynamic design. The pile is formed without a mud retaining wall, no mud is discharged, the pollution to the field and the surrounding environment is small, the safety and the civilization are high, and the cost is saved.
5. The device of the utility model has sufficient resources, and can effectively solve the problem of insufficient resources of the walking type high pile frame hydraulic hammering pile driver; and compared with a walking type high pile frame hydraulic hammering pile driver, the crawler crane is flexible in action, saves the time for moving the pile driver and improves the construction efficiency. The pile driving system and the steel sleeve are relatively independent, the pore-forming of a plurality of pile foundations can be carried out simultaneously in one construction time period, the flow construction of processes such as steel reinforcement cage pile hoisting, concrete pouring and the like among the pile foundations is realized, and the construction period is saved.
Drawings
Fig. 1 is a schematic structural diagram of the hole guiding system of the present invention.
Fig. 2 is a schematic structural diagram of the immersed tube system of the present invention.
Fig. 3 is a schematic structural diagram of the pipe drawing system of the present invention.
Fig. 4 is a schematic view of the connection between the fixture and the positioning casing of the medium-high frequency vibration hammer of the present invention.
Fig. 5 is the connection schematic diagram of the middle pile shoe and the anti-floating cage steel bar barb of the utility model.
Fig. 6 is a schematic position diagram of the retainer ring plate in this embodiment.
Fig. 7 is a schematic diagram of the position of the limiting steel bar in the embodiment.
Wherein: 1. a hole leading machine; 2. positioning a protective cylinder; 3. a crawler crane; 4. a hydraulic pile hammer; 5. steel casing; 6. a pile shoe; 7. The anti-floating cage steel bar barbs; 8. a high-frequency vibration hammer; 8.1, clamping; 9. a limit ring plate; 9.1, a handle; 9.2, a semi-annular plate; 10. And limiting the reinforcing steel bars.
Detailed Description
For a better understanding of the present invention, reference is made to the following detailed description taken in conjunction with the accompanying drawings.
A combined type hoisting hammer driven immersed tube bored concrete pile construction system as shown in fig. 1-3 comprises a pilot hole system, a pile driving system and a pulling-assisted system, wherein,
the hole guiding system comprises a hole guiding machine 1 and a positioning protective cylinder 2, wherein the power end of the hole guiding machine 1 is connected with the upper end of the positioning protective cylinder 2 and is used for vertically pressing the positioning protective cylinder 2 into the soil and taking soil from the positioning protective cylinder 2; the positioning protective cylinder 2 is separated from the hole leading machine 1 after being pressed into the soil body to a set depth;
the pile driving system comprises a crawler crane 3, a hydraulic pile driving hammer 4 and a steel sleeve 5, wherein the lifting end of the crawler crane 3 is connected with the hydraulic pile driving hammer 4, the striking end of the hydraulic pile driving hammer 4 faces downwards to the upper end of the steel sleeve 5, the steel sleeve 5 and the positioning casing 2 are coaxially arranged, and the hydraulic pile driving hammer 4 is used for driving a plurality of steel sleeves 5 into the soil body from the positioning casing 2 in sequence;
the pulling-assisted system comprises a high-frequency vibration hammer 8, and the high-frequency vibration hammer 8 is used for pulling the steel sleeve 5 out of the soil body.
The utility model discloses in, draw hole machine 1, crawler crane 3, hydraulic pressure pile hammer 4 and high frequency vibration hammer 8 and be the mature equipment in the industry, here no longer give unnecessary details.
Preferably, as shown in fig. 5 and 6, a limit ring plate 9 is mounted at the top of the positioning casing 2, and the inner ring of the limit ring 9 is matched with the steel sleeve 5; limiting steel bars 10 are arranged below the limiting ring plate 9, and the limiting steel bars 10 are located between the inner wall of the positioning protective sleeve 2 and the outer wall of the steel sleeve 5 and used for limiting the steel sleeve 5. Preferably, the limit ring plate 9 is of a split structure and is formed by splicing two semi-ring plates 9.2, and the handles 9.1 are arranged at the upper parts of the two semi-ring plates 9.2. As shown in fig. 5, in this embodiment, the top of the positioning casing 2 is provided with a limiting ring plate 9, four limiting steel bars 10 (made of steel bars with a diameter of 25) are welded inside the positioning casing, the steel casing 5 is limited inside the positioning casing, the perpendicularity of the steel casing 5 can be effectively guaranteed, and the perpendicularity of hammering and hole forming is guaranteed.
Preferably, the lower end of the first section of steel casing is provided with a pile shoe 6, and the lower part of the pile shoe 6 is pointed; the pile shoe 6 is of steel construction. In this embodiment, the pile shoe 6 is temporarily fixed to the first section of steel casing 5 by spot welding, so that the pile shoe 6 can be lifted without falling off, and the pile shoe 6 can be separated from the first section of steel casing due to impact force when the steel casing 5 is hammered to sink the pile.
Preferably, the pile shoe 6 is connected with an anti-floating cage steel bar barb 7, and the anti-floating cage steel bar barb 7 can be connected with a steel bar well frame at the bottom of the pile foundation steel bar cage. In concrete placement, the concrete has an ascending buoyancy to pile foundation steel reinforcement cage, utilizes anti cage rebar barb hook 7 to live the reinforcing bar groined type frame of steel reinforcement cage bottom, can prevent effectively that the steel reinforcement cage from coming up. During the construction, reinforcing bar groined type frame welding is in the bottom of pile foundation steel reinforcement cage, makes anti cage steel reinforcement barb 7 that floats hook reinforcing bar groined type frame when transferring pile foundation steel reinforcement cage.
Preferably, as shown in fig. 4, the lower end of the high-frequency vibration hammer 8 is provided with a clamp 8.1, and the lower end of the clamp 8.1 is formed with a radially inward protrusion; the upper outer wall of the steel sleeve 5 is provided with a clamping hole matched with the bulge, during tube drawing, the bulge of the clamp 8.1 is clamped into the clamping hole of the steel sleeve 5, and the high-frequency vibration hammer 8 vibrates while utilizing the clamp 8.1 to lift the steel sleeve 5 upwards.
In the utility model, the hole-leading machine 1 is a double-power head hole-leading machine 1, in particular to a crawler-type long-spiral multifunctional drilling machine; one of the power heads is used for installing and pressing down the positioning casing 2, the other power head is used for taking soil in the positioning casing 2, and the two power heads work synchronously. The configuration of the hole drilling machine 1 is the prior art and will not be described in detail here.
A combined hoisting hammering sinking pipe cast-in-place pile construction method comprises the following steps:
step one, constructing a pile foundation construction database, and exporting on-site pile foundation construction data. The specific method comprises the following steps:
firstly, pile length prediction is carried out by utilizing a BIM technology: the method comprises the following steps of (1) sorting out stratum elevation data of each survey point according to a survey report, generating three-dimensional point coordinates of each survey point in batch in CAD software, and fitting out a three-dimensional curve coordinate network;
secondly, importing the three-dimensional curve coordinate network into UG software, performing fitting modeling on site topographic geology according to geological soil conditions of each geological survey point in a geological survey report, constructing a site topographic model, projecting coordinate point positions of the engineering pile foundation onto the fitted site topographic model, and extracting elevation data;
finally, performing visual programming by using Dynamo in Revit software, and generating a pre-judging pile foundation model in batches; based on the site topography geological model and the engineering pile foundation model, a pile foundation construction database is constructed, and site pile foundation construction data such as construction length, coordinates and the like are derived.
And step two, construction preparation.
And providing each device of the construction system, preparing a proper steel casing according to the predicted construction length of the pile foundation, welding and manufacturing, and fixing the pile shoe 6 and the anti-floating cage steel bar barb 7 at the end part of the first section of steel sleeve 5 through spot welding after welding.
And step three, the hole guiding system works, and the hole guiding machine 1 guides the hole to lower the positioning protective cylinder 2.
A double-power-head hole guiding machine 1 is adopted, wherein one power head is used for installing and pressing down the positioning protection cylinder 2, the other power head is used for taking soil in the positioning protection cylinder 2, and the two power heads work simultaneously.
Because steel casing pipe 5 hammering in-process upper portion does not have spacing measure, can't guarantee the straightness that hangs down of pile foundation pore-forming, for effectively solving above-mentioned problem, draw the hole in the soil body lower part, draw the hole in-process installation location and protect a section of thick bamboo 2, ensure to carry out effective spacing to steel casing pipe 5, guarantee the straightness that hangs down of pore-forming.
And step four, the pile driving system works to enable the multi-section steel sleeve 5 to sequentially penetrate through the positioning pile casing 2 to enter the soil body to form a hole.
Hammering and forming holes by using a crane: connecting the crawler crane 3 with the hydraulic pile hammer 4 to form a hammering device; placing a first section of steel sleeve 5 into the positioning protective sleeve 2, and limiting by using a limiting ring plate 9 and a limiting steel bar 10; starting a hydraulic pile hammer 4 to strike the upper end of the first section of steel sleeve 5 until the upper end of the first section of steel sleeve 5 enters the positioning sleeve; and hammering other steel sleeves 5 in sequence to enable the steel sleeves 5 to enter the soil body to form holes.
Under the condition that the steel sleeve 5 is difficult to advance in a sand layer or a medium sand layer in the hammering process, the steel pile pipe can be ensured to penetrate through the medium sand layer by reducing the stroke height of the hydraulic impact hammer, increasing the number of oil pumps, increasing the hammering force and other various combination forms, and the purpose of effectively forming holes is achieved.
And step five, after the cast-in-place pile is formed, pipe drawing is carried out by utilizing the pulling-assisted system.
After the pile foundation reinforcement cage is hammered and hammered to form a hole, the pile foundation reinforcement cage is lowered in the steel casing, and the anti-floating cage reinforcement barb 7 hooks the reinforcement cage at the bottom of the pile foundation reinforcement cage; and (5) pouring concrete, and pulling up the steel sleeve by adopting a high-frequency vibration hammer 8 while pouring the concrete. Go up to pull out and protect a section of thick bamboo in-process through high frequency vibration with steel casing 5 and pile foundation steel reinforcement cage and pile shoe 6 effectively separate, the closely knit concrete of vibration has effectively avoided the emergence of floating the cage condition simultaneously, has ensured pile foundation construction quality.
It should be noted that the above is only a preferred embodiment of the present invention, and the present invention is not limited thereto, and although the present invention has been described in detail with reference to the embodiments, it will be apparent to those skilled in the art that the technical solutions described in the foregoing embodiments can be modified or some technical features can be replaced with equivalents, but any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. A combined hoisting hammering sinking pipe cast-in-place pile construction system is characterized by comprising a hole guiding system, a piling system and a pulling assisting system, wherein,
the hole guiding system comprises a hole guiding machine and a positioning protective cylinder, wherein the power end of the hole guiding machine is connected with the upper end of the positioning protective cylinder and is used for vertically pressing the positioning protective cylinder into the soil body and taking soil from the positioning protective cylinder;
the pile driving system comprises a crawler crane, a hydraulic pile driving hammer and a steel sleeve, wherein the hoisting end of the crawler crane is connected with the hydraulic pile driving hammer, the hitting end of the hydraulic pile driving hammer faces downwards to the upper end of the steel sleeve, the steel sleeve and the positioning pile casing are coaxially arranged, and the hydraulic pile driving hammer is used for driving a plurality of steel sleeves into soil in sequence from the positioning pile casing;
the pulling-assisted system comprises a high-frequency vibration hammer, and the high-frequency vibration hammer is used for pulling the steel sleeve out of the soil body.
2. A cast-in-place pile construction system as claimed in claim 1, wherein a limit ring plate is mounted on the top of the positioning casing, and the inner ring of the limit ring is fitted with the steel casing; and a limiting steel bar is arranged below the limiting ring plate and is positioned between the inner wall of the positioning protective sleeve and the outer wall of the steel sleeve for limiting the steel sleeve.
3. A cast-in-place pile construction system as claimed in claim 2, wherein the retainer ring plate is a split structure formed by splicing two semi-annular plates, and handles are provided at upper portions of the two semi-annular plates.
4. A cast-in-place pile construction system as claimed in claim 1, wherein a pile shoe is mounted to the lower end of the first section of steel casing.
5. A cast-in-place pile construction system as claimed in claim 4, wherein the lower end of the pile shoe is pointed.
6. A cast-in-place pile construction system as claimed in claim 4, wherein anti-floating cage reinforcement barbs are attached to the pile shoe and are adapted to engage the reinforcement cage at the base of the pile foundation reinforcement cage.
7. A cast-in-place pile construction system as claimed in claim 1, wherein the high frequency vibration hammer is provided at a lower end thereof with a jig, the lower end of the jig being formed with a radially inward projection; the outer wall of the upper portion of the steel sleeve is provided with a clamping hole matched with the protrusion, when the steel sleeve is pulled out, the protrusion of the clamp is clamped into the clamping hole of the steel sleeve, and the high-frequency vibration hammer vibrates and lifts the steel sleeve upwards by utilizing the clamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222642635.4U CN218622226U (en) | 2022-09-30 | 2022-09-30 | Combined type construction system for driving hammer driven immersed tube cast-in-place pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202222642635.4U CN218622226U (en) | 2022-09-30 | 2022-09-30 | Combined type construction system for driving hammer driven immersed tube cast-in-place pile |
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| CN218622226U true CN218622226U (en) | 2023-03-14 |
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| CN202222642635.4U Active CN218622226U (en) | 2022-09-30 | 2022-09-30 | Combined type construction system for driving hammer driven immersed tube cast-in-place pile |
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