CN112112153B - Efficient construction method for segmental pile - Google Patents
Efficient construction method for segmental pile Download PDFInfo
- Publication number
- CN112112153B CN112112153B CN201910532631.0A CN201910532631A CN112112153B CN 112112153 B CN112112153 B CN 112112153B CN 201910532631 A CN201910532631 A CN 201910532631A CN 112112153 B CN112112153 B CN 112112153B
- Authority
- CN
- China
- Prior art keywords
- jacking
- small
- oil cylinder
- segmental
- main
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/24—Prefabricated piles
- E02D5/30—Prefabricated piles made of concrete or reinforced concrete or made of steel and concrete
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
Abstract
The invention belongs to the technical field of foundation engineering, and particularly relates to an efficient construction method of a segmental pile, which comprises the following steps: firstly, preparing before construction; step two, erecting a counter-force tool; step three, installing a track and a main platform; hoisting the segmental piles; step five, carrying out top pressing construction on the segment piles; step six, repeating the top pressing construction of the segment pile; the defects of the prior art are overcome, the assembling of the prefabricated segment piles in a factory mode is greatly improved, the installation efficiency is improved, the construction period is shortened, and the problems of necking down and pile breakage in the construction process of common prefabricated concrete pipe piles can be effectively solved.
Description
Technical Field
The invention belongs to the technical field of foundation engineering, and particularly relates to an efficient construction method for a segmental pile.
Background
The bridge foundation is the lowest part of the bridge structure which is directly contacted with the foundation and is an important component of the bridge substructure. The part of the stratum that receives the load from the foundation is called the foundation. After the foundation and the foundation are subjected to various loads, stress and deformation are generated, and in order to ensure the normal use and safety of the bridge, the foundation and the foundation must have sufficient strength and stability, and the deformation should be within an allowable range.
The bridge foundation is used for bearing all the loads transmitted by the upper structure and transmitting the loads of the upper structure and the lower structure to the foundation. Therefore, for safe and normal use of the full bridge, the foundation and foundation are required to have sufficient strength, rigidity and overall stability so that they do not undergo excessive horizontal displacement or uneven settlement.
Compared with the common building foundation, the bridge foundation is deeply buried because: firstly, because the load acting on the foundation is concentrated and strong, and the shallow soil is generally soft and difficult to bear the load, the foundation needs to be extended downwards so as to be arranged on the foundation with higher bearing capacity; secondly, for the foundation of the pier in the water, because the riverbed is washed by water flow, the bridge foundation must have enough burial depth so as to prevent the bridge from sinking or overturning accidents caused by washing the bottom surface (the foundation for short). The foundation base of open cut, open caisson, etc. of bridge should be buried at least 2-5 m below the lowest flushing line of riverbed according to its importance and easy maintenance. For frost heaving soil foundations, the foundation should be at least 0.25 meters below the frost line. For the land pier foundation, besides the requirement of frost heaving of the foundation, the damage of the surface soil caused by biological and human activities and other natural factors is also considered, and the foundation is not less than 1.0 meter below the ground. For urban bridges, the foundation is often placed at the lowest water level or below the ground so as not to affect the appearance of the city. The size of the plane of the base top is larger than the size of the section of the pier bottom, so that construction is facilitated.
The foundation is built in water, so that the field is narrow, the construction is inconvenient, and the foundation is often threatened in flood season and impacted by drifters. If an underwater obstacle is encountered in the construction process, diving operation is also needed. Therefore, the construction of the underwater foundation has the advantages of long general construction period, complex technology, easy accident occurrence, large engineering quantity and high construction cost which is usually half of the construction cost of the whole bridge, so the construction of the bridge foundation occupies an important position in the whole bridge engineering.
Disclosure of Invention
The invention aims to provide an efficient construction method of a segmental pile, overcomes the defects of the prior art, greatly improves the installation efficiency for the assembly of factory-like prefabricated segmental piles, shortens the construction period, and simultaneously can effectively solve the problems of necking and pile breakage in the construction process of common prefabricated concrete tubular piles.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
an efficient construction method of a segmental pile comprises the following steps:
step one, preparation before construction: installing and constructing a root type foundation and manufacturing segment piles at the same time;
step two, erecting a counterforce tool: after the root type foundation is installed, installing a connecting anchor cable and an anchor beam, leveling and adjusting, grouting and sealing the anchor, and keeping the connecting anchor cable as a permanent structure in the root type foundation;
the counter-force tool comprises a root type foundation, an anchor beam, a plurality of track platforms and a main platform, wherein the root type foundation is of a cylindrical structure and is fixed in the ground, a vertical round hole is formed in the middle of the root type foundation, the anchor beam is fixed above the root type foundation through a connecting anchor cable, the connecting anchor cable is vertically inserted into the wall of the root type foundation and is fixedly connected with the root type foundation, the track platforms are two tracks which are arranged on the ground and are parallel to each other, the root type foundation is positioned in the middle of the two tracks, the main platform comprises a main bearing platform, a jacking cross beam, a counter-force pressing plate, a top plate, a jack system, a control room, a main pull rod and a winch, the lower part of the main bearing platform is respectively fixed on the two tracks through supporting oil cylinders positioned at the two ends of the main bearing platform and moves along the slide rails, the two ends above the main bearing platform are respectively provided with the main pull rod, the jacking cross beam is fixed above the main bearing platform through the main pull rods at the two ends, the counter-force pressing plate is positioned on the lower surface of the jacking cross beam, the top of the main pull rod is connected with a supporting rod through a connecting piece, the top plate is fixed above the jacking cross beam through the supporting rod, the winch is arranged on the top plate and is provided with an overhanging metal rope, the metal rope is connected with the upper part of the jacking cross beam, the jack system comprises a first hydraulic system and a second hydraulic system, the first hydraulic system comprises a plurality of large jacking cylinders, the second hydraulic system comprises a plurality of small jacking cylinders, the main pull rod comprises a plurality of vertically-installed large screw rods and a plurality of vertically-installed small screw rods, the plurality of large jacking cylinders are in one-to-one correspondence with the plurality of large screw rods, the large jacking cylinders are arranged on the large screw rods, nuts are arranged on the large screw rods and positioned above the large jacking cylinders, the plurality of small jacking cylinders are in one-to-one correspondence with the plurality of small screw rods, the small jacking cylinders are arranged on the small screw rods, and nuts are arranged on the small screw rods and positioned above the small jacking cylinders, the main bearing platform is connected with the anchor beam in a movable connection mode;
step three, installing a track and a main platform: the main platform comprises a main bearing platform, a counter-force pressing plate, a jacking cross beam, a top plate, a jack, a control chamber, a main pull rod and a winch, the rail platform is arranged on two sides of a root type foundation mounting position, and then the main bearing platform, the counter-force pressing plate, the top plate, the jack, the control chamber, the main pull rod and the winch are sequentially mounted according to the principle of bottom-to-top, bilateral symmetry and leveling priority;
step four, hoisting the segmental piles: moving the main platform along the track platform to make room above the root foundation, hoisting the processed segmental piles into the root foundation, and finally moving the main platform back;
step five, the top pressing construction of the segment pile: firstly, a first hydraulic system is used for jacking and working, a nut above a large jacking oil cylinder is screwed, the stroke of the large jacking oil cylinder starts to push a cross beam to move downwards, and a second hydraulic system moves downwards along with the cross beam, enables the nut at the upper end of a small jacking oil cylinder to rotate and moves downwards along with the small jacking oil cylinder; the stroke of the large jacking oil cylinder is in place, a second hydraulic system is started, the nut at the upper end of the small jacking oil cylinder is screwed in place, the stroke of the oil cylinder starts, and the jacking cross beam continues to move downwards; the first hydraulic system moves downwards along with the cross beam, so that the nut at the upper end of the large top rotates and moves downwards along with the large top; the stroke of the small jacking oil cylinder is in place, the large jacking oil cylinder is started again, the nut on the large jacking oil cylinder is screwed in place, the stroke of the oil cylinder starts, and the jacking cross beam continues to move downwards; repeating the above process;
step six, repeating the construction of pile top pressing of the segments: after the top of the last section of segmental pile is pressed in place, returning oil to the place by each hydraulic system, removing the limit connection, retracting the jacking cross beam, moving the platform away, hoisting the next prefabricated part, connecting the lower part of the segmental pile newly hoisted with the upper part of the segmental pile after the hoisting is finished, repeating the fifth step until the top of the segmental pile newly hoisted is pressed in place, and repeating the sixth step until all segmental piles are jacked in place.
Further, the control room is arranged on the main bearing platform.
Furthermore, the number of the small screw rods is four, the four small screw rods are uniformly distributed at two ends of the main bearing platform, and the number of the large screw rods is two, and the two large screw rods are respectively arranged at two ends of the main bearing platform and are located in the middle of the two small screw rods.
Furthermore, the number of the large jacking oil cylinders is two, the number of the small jacking oil cylinders is four, and the tonnage of the large jacking oil cylinder is twice that of the small jacking oil cylinders.
Further, the movable connection mode connection is bolt connection and pin connection.
Further, the movable connection mode is a self-locking connection device.
Further, the large jacking oil cylinder and the small jacking oil cylinder are both hollow jacks or penetrating jacks, and the hollow positions are respectively sleeved on the large screw rod and the small screw rod.
Furthermore, all the large jacking oil cylinders in the first hydraulic system are synchronously and commonly pressed, and all the small jacking oil cylinders in the second hydraulic system are synchronously and commonly pressed.
Compared with the prior art, the invention has the following beneficial effects:
1. the hoisting of the prefabricated segment pile is facilitated, and the operation space is optimized;
2. the pile pressing process of the jack has continuity and synchronism;
3. the track platform follows the advantages of overall safety, reliability, adjustable leveling and strong suitability;
4. a self-locking special anchor rope counter-force structure is adopted in cooperation with a root type foundation;
5. the whole system adopts mechanical and automatic design, strives for maximum work efficiency, shortens construction period and improves turnover rate.
6. The installation, debugging, locking and jacking construction of the tool equipment are fully matched with the structural characteristics of the root type foundation, the superior ground anchor performance and the processing standardization performance of the prefabricated express are utilized, under the condition that the working surface conditions allow, the multi-working-surface lap joint flow line operation is adopted, the advantages of the mechanical operation are fully exerted, the construction period is shortened, and the cost is saved.
Drawings
Fig. 1 is a schematic structural view of a reaction tool.
Fig. 2 is a schematic view of a top view of the reaction tool in a removed state.
Fig. 3 is a schematic plan view of the reaction tool in an operating state.
Fig. 4 is a flow chart of the efficient construction method of the segmental pile.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
As shown in the figure, the counter-force tool of the invention comprises a root type foundation 2, an anchor beam 3, a track platform 4 and a main platform 100, wherein the root type foundation 2 is of a cylindrical structure, is fixed in the ground 1, is provided with a vertical round hole in the middle, the anchor beam 3 is fixed above the root type foundation 2 through a connecting anchor cable 31, the connecting anchor cable is a plurality of, is vertically inserted into the wall of the root type foundation and is fixedly connected, the track platform 4 is two tracks which are arranged on the ground and are parallel to each other, the root type foundation is positioned at the middle position of the two tracks, the main platform 100 comprises a main bearing platform 5, a jacking cross beam 7, a counter-force pressing plate 71, a top plate 9, a jack system 8, a control chamber 101, a main pull rod 6 and a winch 92, the lower part of the main bearing platform 5 is respectively fixed on the two tracks through supporting oil cylinders 51 positioned at the two ends of the main bearing platform and moves along slide rails, the device comprises a main bearing platform, a jacking cross beam, a counter-force pressing plate 71, a top pressing cross beam, a top pressing plate 9, a winch 92, a first hydraulic system and a second hydraulic system, wherein two ends above the main bearing platform are respectively provided with a main pull rod 6, the jacking cross beam is fixed above the main bearing platform through the main pull rods at the two ends, the counter-force pressing plate 71 is positioned on the lower surface of the jacking cross beam 7, the top of the main pull rod is connected with a supporting rod through a connecting piece 91, the top plate 9 is fixed above the jacking cross beam through the supporting rod, the winch 92 is arranged on the top plate and is provided with an extended metal rope 921, the metal rope 921 is connected with the upper part of the jacking cross beam 7, the jack system comprises a first hydraulic system and a second hydraulic system, the first hydraulic system comprises a plurality of large jacking oil cylinders 81, the second hydraulic system comprises a plurality of small jacking oil cylinders 82, the main pull rod 6 comprises a plurality of vertically installed large screw rods 61 and a plurality of vertically installed small screw rods 62, and the large jacking oil cylinders correspond to the large screw rods one to one, big top hydro-cylinder is installed on big screw rod and is located big top hydro-cylinder top on the big screw rod and is equipped with nut 801, a plurality of little top hydro-cylinders and a plurality of little screw rod one-to-one, little top hydro-cylinder is installed on little screw rod and is located little top hydro-cylinder top on the little screw rod and is equipped with nut 802, main load-bearing platform adopts movable connected mode with the anchor beam to be connected.
Further, the control room 101 is disposed on the main carrying platform.
Furthermore, the number of the small screw rods is four, the four small screw rods are uniformly distributed at two ends of the main bearing platform, and the number of the large screw rods is two, and the two large screw rods are respectively arranged at two ends of the main bearing platform and are located in the middle of the two small screw rods.
Furthermore, the number of the large jacking oil cylinders is two, the number of the small jacking oil cylinders is four, and the tonnage of the large jacking oil cylinder is twice that of the small jacking oil cylinders.
Further, the movable connection mode connection is bolt connection and pin connection.
Further, the movable connection mode is a self-locking connection device.
Further, the large jacking oil cylinder and the small jacking oil cylinder are both hollow jacks or penetrating jacks, and the hollow positions are respectively sleeved on the large screw rod and the small screw rod.
Furthermore, all the large jacking oil cylinders in the first hydraulic system are synchronously and commonly pressed, and all the small jacking oil cylinders in the second hydraulic system are synchronously and commonly pressed.
Example two
As shown in the figure, the efficient construction method of the segmental pile comprises the following steps:
step one, preparation before construction: installing and constructing a root type foundation and manufacturing segment piles at the same time;
step two, erecting a counterforce tool: after the root type foundation is installed, installing a connecting anchor cable and an anchor beam, leveling and adjusting, grouting and sealing the anchor, and keeping the connecting anchor cable as a permanent structure in the root type foundation;
step three, installing a track and a main platform: the main platform comprises a main bearing platform, a counter-force pressing plate, a jacking cross beam, a top plate, a jack, a control chamber, a main pull rod and a winch, the rail platform is arranged on two sides of a root type foundation mounting position, and then the main bearing platform, the counter-force pressing plate, the top plate, the jack, the control chamber, the main pull rod and the winch are sequentially mounted according to the principle of bottom-to-top, bilateral symmetry and leveling priority;
step four, hoisting the segmental piles: moving the main platform along the track platform to make room above the root foundation, hoisting the processed segmental piles into the root foundation, and finally moving the main platform back;
step five, the top pressing construction of the segment pile: firstly, a first hydraulic system is used for jacking and working, a nut above a large jacking oil cylinder is screwed, the stroke of the large jacking oil cylinder starts to push a cross beam to move downwards, and a second hydraulic system moves downwards along with the cross beam, enables the nut at the upper end of a small jacking oil cylinder to rotate and moves downwards along with the small jacking oil cylinder; the stroke of the large jacking oil cylinder is in place, a second hydraulic system is started, the nut at the upper end of the small jacking oil cylinder is screwed in place, the stroke of the oil cylinder starts, and the jacking cross beam continues to move downwards; the first hydraulic system moves downwards along with the cross beam, so that the nut at the upper end of the large top rotates and moves downwards along with the large top; the stroke of the small jacking oil cylinder is in place, the large jacking oil cylinder is started again, the nut on the large jacking oil cylinder is screwed in place, the stroke of the oil cylinder starts, and the jacking cross beam continues to move downwards; repeating the above process;
step six, repeating the construction of pile top pressing of the segments: after the top of the last section of segmental pile is pressed in place, returning oil to the place by each hydraulic system, removing the limit connection, retracting the jacking cross beam, moving the platform away, hoisting the next prefabricated part, connecting the lower part of the segmental pile newly hoisted with the upper part of the segmental pile after the hoisting is finished, repeating the fifth step until the top of the segmental pile newly hoisted is pressed in place, and repeating the sixth step until all segmental piles are jacked in place.
EXAMPLE III
Actual construction and its description
1.1 from special anchor rope counter-force frock of locking-type: after the construction of the root type foundation is finished, a counter-force tool is required to be installed immediately, and a reliable stress structure is provided for jacking and pressing the segment piles. The counter-force structure of the pile pressing adopts the design of a prestressed anchor cable, the pile pressing is anchored in the root type foundation, the inner anchor adopts a special self-locking structure, the outer anchor is arranged on the anchor beam, and the penetrating cable installation process of prefabricating the root type foundation firstly, then installing and tensioning can be met.
After the root type foundation is installed, the anchor beam is installed, the anchor cable is connected, leveling adjustment is carried out, then the anchor head in the anchor cable is self-locked, tensioning is carried out on the outer anchor, then grouting and anchor sealing are carried out, and the counter-force anchor cable is reserved in the root type foundation as a permanent structure.
1.2 track and Main platform installation
The main body platform can realize integral movement on the track after the top pressing is finished, and a space for hoisting the next prefabricated part is provided.
The effective load of the main platform and the equipment is about 30 tons, the ground bearing capacity and the flatness are considered before the track is laid, and steel plates and sleepers can be adopted to realize recycling and shorten the installation time.
The main platform comprises track platform, main load-bearing platform, counter-force clamp plate, roof, jack, control room, main pull rod, hoist engine etc. follows during the installation: from bottom to top, bilateral symmetry, leveling priority principle.
The installation of the rails and the main platform can be carried out in advance, and the construction period of the section pile is not occupied.
1.3 mounting of jacks, tensioning systems
The system adopts a construction method that two sets of hydraulic jacks alternately jack up, and ensures the continuous operation of the jacking of the segment piles. When the jack is pressed, the tension screw acts on the main bearing platform to enable the main bearing platform to bear pressure on the anchor beam from bottom to top, and the main bearing platform and the anchor beam are connected in a plane sliding contact mode, or a bolt connection or a pin connection mode.
Firstly, a first hydraulic system is used for jacking and working, nuts are screwed, the stroke of a large jacking oil cylinder starts, and a jacking cross beam descends;
the second hydraulic system moves downwards along with the cross beam, and enables the nut at the upper end of the small top to rotate and move downwards along with the small top;
the large jacking stroke is in place, a second hydraulic system is started (a small jacking nut is also screwed in place), the stroke of the oil cylinder starts, and the jacking cross beam continues to move downwards;
the first hydraulic system moves downwards along with the cross beam, so that the nut at the upper end of the large top rotates and moves downwards along with the large top;
the stroke of the small top is in place, the large top is started again (the large top nut is also screwed in place), the stroke of the oil cylinder starts, and the top pressure cross beam continues to move downwards;
the above process is repeated.
When the jack and the lengthening connecting piece are installed, the butt joint is smooth, the horizontal position and the central position are adjusted, and the on-line test is carried out.
1.4 platform integral sliding translation
After the top of the segment pile is pressed in place, each hydraulic system returns oil to place, the limiting connection is released, the top pressing beam is retracted, the platform is moved away, and the next prefabricated part is hoisted.
Stage construction period test
According to the construction method, time consumption statistics are carried out on each step of the top pressing segmental pile, and the time consumption statistics are shown in the following table:
according to the data, a set of system and two teams and groups are adopted for construction, and the construction can be completed completely within 6 days on the assumption that the pipe diameter of the pile foundation is 7 meters and the length of the pile foundation is 20 meters.
Equipment statistical table
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (8)
1. An efficient construction method of a segmental pile comprises the following steps: the method comprises the following steps:
step one, preparation before construction: installing and constructing a root type foundation and manufacturing segment piles at the same time;
step two, erecting a counterforce tool: after the root type foundation is installed, installing a connecting anchor cable and an anchor beam, leveling and adjusting, grouting and sealing the anchor, and keeping the connecting anchor cable as a permanent structure in the root type foundation;
the counter-force tool comprises a root type foundation, an anchor beam, a plurality of track platforms and a main platform, wherein the root type foundation is of a cylindrical structure and is fixed in the ground, a vertical round hole is formed in the middle of the root type foundation, the anchor beam is fixed above the root type foundation through a connecting anchor cable, the connecting anchor cable is vertically inserted into the wall of the root type foundation and is fixedly connected with the root type foundation, the track platforms are two tracks which are arranged on the ground and are parallel to each other, the root type foundation is positioned in the middle of the two tracks, the main platform comprises a main bearing platform, a jacking cross beam, a counter-force pressing plate, a top plate, a jack system, a control room, a main pull rod and a winch, the lower part of the main bearing platform is respectively fixed on the two tracks through supporting oil cylinders positioned at the two ends of the main bearing platform and moves along the slide rails, the two ends above the main bearing platform are respectively provided with the main pull rod, the jacking cross beam is fixed above the main bearing platform through the main pull rods at the two ends, the counter-force pressing plate is positioned on the lower surface of the jacking cross beam, the top of the main pull rod is connected with a supporting rod through a connecting piece, the top plate is fixed above the jacking cross beam through the supporting rod, the winch is arranged on the top plate and is provided with an overhanging metal rope, the metal rope is connected with the upper part of the jacking cross beam, the jack system comprises a first hydraulic system and a second hydraulic system, the first hydraulic system comprises a plurality of large jacking cylinders, the second hydraulic system comprises a plurality of small jacking cylinders, the main pull rod comprises a plurality of vertically-installed large screw rods and a plurality of vertically-installed small screw rods, the plurality of large jacking cylinders are in one-to-one correspondence with the plurality of large screw rods, the large jacking cylinders are arranged on the large screw rods, nuts are arranged on the large screw rods and positioned above the large jacking cylinders, the plurality of small jacking cylinders are in one-to-one correspondence with the plurality of small screw rods, the small jacking cylinders are arranged on the small screw rods, and nuts are arranged on the small screw rods and positioned above the small jacking cylinders, the main bearing platform is connected with the anchor beam in a movable connection mode;
step three, installing a track and a main platform: the main platform comprises a main bearing platform, a counter-force pressing plate, a jacking cross beam, a top plate, a jack, a control chamber, a main pull rod and a winch, the rail platform is arranged on two sides of a root type foundation mounting position, and then the main bearing platform, the counter-force pressing plate, the top plate, the jack, the control chamber, the main pull rod and the winch are sequentially mounted according to the principle of bottom-to-top, bilateral symmetry and leveling priority;
step four, hoisting the segmental piles: moving the main platform along the track platform to make room above the root foundation, hoisting the processed segmental piles into the root foundation, and finally moving the main platform back;
step five, the top pressing construction of the segment pile: firstly, a first hydraulic system is used for jacking and working, a nut above a large jacking oil cylinder is screwed, the stroke of the large jacking oil cylinder starts to push a cross beam to move downwards, and a second hydraulic system moves downwards along with the cross beam, enables the nut at the upper end of a small jacking oil cylinder to rotate and moves downwards along with the small jacking oil cylinder; the stroke of the large jacking oil cylinder is in place, a second hydraulic system is started, the nut at the upper end of the small jacking oil cylinder is screwed in place, the stroke of the oil cylinder starts, and the jacking cross beam continues to move downwards; the first hydraulic system moves downwards along with the cross beam, so that the nut at the upper end of the large top rotates and moves downwards along with the large top; the stroke of the small jacking oil cylinder is in place, the large jacking oil cylinder is started again, the nut on the large jacking oil cylinder is screwed in place, the stroke of the oil cylinder starts, and the jacking cross beam continues to move downwards; repeating the above process;
step six, repeating the construction of pile top pressing of the segments: after the top of the last section of segmental pile is pressed in place, returning oil to the place by each hydraulic system, removing the limit connection, retracting the jacking cross beam, moving the platform away, hoisting the next prefabricated part, connecting the lower part of the segmental pile newly hoisted with the upper part of the segmental pile after the hoisting is finished, repeating the fifth step until the top of the segmental pile newly hoisted is pressed in place, and repeating the sixth step until all segmental piles are jacked in place.
2. The efficient construction method of the segmental pile according to claim 1, wherein: the control room is arranged on the main bearing platform.
3. The efficient construction method of the segmental pile according to claim 1, wherein: the number of the small screw rods is four, the four small screw rods are uniformly distributed at two ends of the main bearing platform, and the number of the large screw rods is two, and the two large screw rods are respectively arranged at two ends of the main bearing platform and are located in the middle of the two small screw rods.
4. The efficient construction method of the segmental pile according to claim 3, wherein: the number of the large jacking oil cylinders is two, the number of the small jacking oil cylinders is four, and the tonnage of the large jacking oil cylinder is twice that of the small jacking oil cylinders.
5. The efficient construction method of the segmental pile according to claim 1, wherein: the movable connection mode connection is bolt connection and pin connection.
6. The efficient construction method of the segmental pile according to claim 1, wherein: the movable connection mode is a self-locking type connection device.
7. The efficient construction method of the segmental pile according to claim 1 or 4, wherein: the large jacking oil cylinder and the small jacking oil cylinder are both hollow jacks or straight-through jacks, and the hollow positions are respectively sleeved on the large screw rod and the small screw rod.
8. The efficient construction method of the segmental pile according to claim 7, wherein: all the large jacking oil cylinders in the first hydraulic system are synchronously and commonly pressed, and all the small jacking oil cylinders in the second hydraulic system are synchronously and commonly pressed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910532631.0A CN112112153B (en) | 2019-06-19 | 2019-06-19 | Efficient construction method for segmental pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910532631.0A CN112112153B (en) | 2019-06-19 | 2019-06-19 | Efficient construction method for segmental pile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112112153A CN112112153A (en) | 2020-12-22 |
| CN112112153B true CN112112153B (en) | 2022-02-15 |
Family
ID=73796591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910532631.0A Active CN112112153B (en) | 2019-06-19 | 2019-06-19 | Efficient construction method for segmental pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112112153B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0719973A (en) * | 1993-06-29 | 1995-01-20 | Chiyoda Corp | Load test device for pile concurrently with reaction pile and load test method |
| CN1807768A (en) * | 2006-01-26 | 2006-07-26 | 安徽省高速公路总公司 | Root type foundation and anchorage and construction method thereof |
| CN101200901A (en) * | 2007-12-27 | 2008-06-18 | 山东建筑大学 | Static pressure pile process for construction of existing building basement |
| CN102605785A (en) * | 2012-04-01 | 2012-07-25 | 江苏东南特种技术工程有限公司 | Prestressing pile sealing device for statically pressed piles of anchor bars |
| CN105699203A (en) * | 2016-04-21 | 2016-06-22 | 山东大学 | Test device and method for measuring compressive strength of building materials under ambient pressure |
| CN107489152A (en) * | 2017-09-07 | 2017-12-19 | 淮海工学院 | A kind of screw anchor encircles static press piling constructing device and its construction method |
-
2019
- 2019-06-19 CN CN201910532631.0A patent/CN112112153B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0719973A (en) * | 1993-06-29 | 1995-01-20 | Chiyoda Corp | Load test device for pile concurrently with reaction pile and load test method |
| CN1807768A (en) * | 2006-01-26 | 2006-07-26 | 安徽省高速公路总公司 | Root type foundation and anchorage and construction method thereof |
| CN101200901A (en) * | 2007-12-27 | 2008-06-18 | 山东建筑大学 | Static pressure pile process for construction of existing building basement |
| CN102605785A (en) * | 2012-04-01 | 2012-07-25 | 江苏东南特种技术工程有限公司 | Prestressing pile sealing device for statically pressed piles of anchor bars |
| CN105699203A (en) * | 2016-04-21 | 2016-06-22 | 山东大学 | Test device and method for measuring compressive strength of building materials under ambient pressure |
| CN107489152A (en) * | 2017-09-07 | 2017-12-19 | 淮海工学院 | A kind of screw anchor encircles static press piling constructing device and its construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112112153A (en) | 2020-12-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101918643B (en) | Caisson structure and method of sinking the caisson structure into the ground exactly | |
| CN106192774A (en) | A kind of steel trestle construction installation | |
| CN113585360A (en) | Anti-floating anchor rod device and construction method | |
| CN112695696A (en) | Integrated construction equipment for superstructure of high-pile wharf and construction method thereof | |
| CN112112153B (en) | Efficient construction method for segmental pile | |
| CN112609725A (en) | Prefabricated steel open caisson construction method suitable for central urban area | |
| CN210975793U (en) | Special counter-force frock of segment pile construction | |
| CN112112152A (en) | Special counter-force frock of segment pile construction | |
| CN110965558A (en) | Large-span long and narrow foundation pit supporting method and supporting structure | |
| CN217419647U (en) | Prestress applying structure and foundation pit beam string steel pull rod prestress applying node | |
| CN108327848B (en) | A kind of engineering ship is flexible to raise position of foetus installation method | |
| CN101148889B (en) | Compressed-air caisson anchor pile supporting device | |
| CN215329670U (en) | Integrated construction equipment for superstructure of high-pile wharf | |
| CN214169078U (en) | Prestressed advance inclined throwing support supporting structure system capable of being applied | |
| CN111305233B (en) | Axial force compensation type prestress fish-bellied foundation pit steel supporting structure and construction method thereof | |
| CN207700030U (en) | Lifting moving combined movable steel bridge | |
| CN113027102B (en) | Soft soil foundation construction support inner support construction operation platform and construction method | |
| CN110524687A (en) | A kind of immersed tube tunnel inner formwork system and construction method | |
| CN110924312A (en) | Construction method of steel trestle | |
| CN214939311U (en) | Prefabricated bridge pier and beam integrated bridge girder erection machine | |
| CN213741181U (en) | Pile foundation cantilever type structure for underpinning underground building | |
| CN216640650U (en) | Rock-socketed construction platform of offshore wind power implanted high-rise pile cap foundation pile | |
| CN203238663U (en) | Immersed tube top end three-dimensional fine tuning system | |
| CN213571557U (en) | Reverse pulling equipment for dismantling upper structure of cable-stayed bridge | |
| CN212452773U (en) | Inner support mounting device for steel sheet pile cofferdam reverse construction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |