CN110593328A - Pile foundation reinforcing method for building engineering construction - Google Patents
Pile foundation reinforcing method for building engineering construction Download PDFInfo
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- CN110593328A CN110593328A CN201910919730.4A CN201910919730A CN110593328A CN 110593328 A CN110593328 A CN 110593328A CN 201910919730 A CN201910919730 A CN 201910919730A CN 110593328 A CN110593328 A CN 110593328A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D37/00—Repair of damaged foundations or foundation structures
Abstract
The invention discloses a pile foundation reinforcing method for building engineering construction, which comprises the following steps: (1) determining an original pile foundation of an original building: determining the position of an original pile foundation according to an upright post of an original building, and then digging downwards one circle around the periphery of the upright post until a bearing platform is exposed; then continuing to dig downwards to expose the piles below the bearing platform, and continuing to dig downwards until the piles are exposed for 7-10 m; then completely cleaning soil between the piles; (2) pouring a new pile foundation bottom layer: building a ring of annular frame outside the dug pile by using steel bars, and then enclosing a ring of partition walls by using wood plates outside the frame, wherein the height of each wood plate is 1-2 m; and then concrete is poured in the partition wall to form a bottom layer of the new pile foundation. According to the invention, the installation of the damping device can be completed without arranging a supporting device to support the original pile foundation, so that the construction difficulty is reduced, and the construction efficiency is effectively improved; in addition, in the mode, the size of the damping device is not required to be specifically limited, and the application range of the damping device is wider.
Description
Technical Field
The invention belongs to the technical field of building earthquake resistance, and particularly relates to a pile foundation reinforcing method for building engineering construction.
Background
In recent years, the earthquake of China is high, the earthquake resistant requirement of the country on the building is improved, and in order to adapt to the national earthquake resistant standard, the newly built building has good earthquake resistant effect and the living safety degree of people is improved. However, in buildings in the 80 and 90 s, the importance of earthquake resistance of the buildings is not taken, most buildings do not have earthquake-resistant structures, so that the old buildings are easy to topple over when an earthquake occurs, the safety factor is extremely low, and the safety of residents is extremely low.
And the damping device that will add on the basis of former building operates complicatedly, need set up a large amount of strutting arrangement and support the back to former pile foundation, realizes pouring new pile foundation, installation damping device etc. and operates, and the construction degree of difficulty is big, and is inefficient.
Disclosure of Invention
The invention provides a pile foundation reinforcing method for building engineering construction, which is convenient to construct and high in efficiency in order to overcome the defects of the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme: a pile foundation reinforcing method for building engineering construction comprises the following steps:
(1) determining an original pile foundation of an original building: determining the position of an original pile foundation according to an upright post of an original building, and then digging downwards one circle around the periphery of the upright post until a bearing platform is exposed; then continuing to dig downwards to expose the piles below the bearing platform, and continuing to dig downwards until the piles are exposed for 7-10 m; then completely cleaning soil between the piles;
(2) pouring a new pile foundation bottom layer: building a ring of annular frame outside the dug pile by using steel bars, and then enclosing a ring of partition walls by using wood plates outside the frame, wherein the height of each wood plate is 1-2 m; then concrete is poured in the partition wall to form a bottom layer of the new pile foundation;
(3) pouring a new pile foundation connecting column and a bearing platform: a cylindrical frame is erected on the bottom layer through steel bars, and a boss frame is erected on the upper portion of the cylindrical frame through the steel bars; then, a square frame is built on the top of the boss frame by using steel bars, then concrete is poured, so that part of the square frame becomes a bearing platform of a new pile foundation, part of the cylindrical frame becomes a connecting column of the new pile foundation, part of the boss frame becomes a boss, and the bearing platform is connected with the bottom layer through the connecting column;
(4) installing a damping device: installing the damping device between a bearing platform of a new pile foundation and a bearing platform of an original pile foundation, and taking care to avoid piles connected with the original pile foundation during installation;
(5) removing the pile of the original pile foundation: chiseling piles in front of an original pile foundation bearing platform and a new pile foundation bearing platform through a tool to enable the force of the original pile foundation to act on the damping device;
(6) installing a sealing seat: transporting 4 semicircular steel plates and 2 arc-shaped steel plates to a construction site, and respectively welding the 2 semicircular steel plates and the 1 arc-shaped steel plate into a half-edge cylinder; then, the lower ends of the cylinder bodies on the two half sides are connected with the bosses, the upper ends of the cylinder bodies on the two half sides are in sealing fit with the upright posts, then the cylinder bodies on the two half sides are welded into a complete sealing seat, and the damping device is isolated in the sealing seat;
(7) pouring and fixing: and pouring concrete in the dug pit on the ground, and after the concrete is solidified, realizing the connection of the original pile foundation and the new pile foundation.
In the invention, a new pile foundation is directly poured on the pile foundation of the original building, and a column of the original building is arranged between two pile foundations; on the basis, a damping device can be conveniently arranged between the original pile foundation and the new pile foundation, and the column body is chiseled after the damping device is installed; in the mode, a supporting device is not required to be arranged to support the original pile foundation, so that the construction difficulty is reduced, and the construction efficiency is effectively improved; in addition, in the mode, the size of the damping device is not required to be specifically limited, and the application range of the damping device is wider; the shock absorption of the old building is realized under the condition of not changing any part of the original building by the mode, so that the original building has a good shock-resistant effect; the sealing seat is arranged to wholly wrap the damping device, so that the damping device is effectively separated from concrete when the concrete is poured, and the two parts of the damping device can still flexibly realize mutual action, so that the damping effect is better, the earthquake resistance degree is higher, and the building earthquake resistance in areas with strong earthquake feeling is more suitable; the sealing seat is divided into a left sealing seat body and a right sealing seat body, so that the sealing seat can be installed after the new pile foundation body and the damping device are installed, and the construction of the new pile foundation body and the damping device cannot be influenced by the arrangement of the sealing seat; the sealing seat is formed by welding steel plates, so that the operation is simpler and more convenient, a good sealing effect can be ensured, concrete is effectively prevented from entering the sealing seat, and the damping device and the concrete are well isolated; in the structure, concrete can be directly poured at other positions except the inside of the sealing seat, so that the connection between the upper new pile foundation body is firmer, and the stability of the anti-seismic building pile foundation is improved while good shock absorption is realized; the stainless steel has good deformability, so that the middle plate can deform to a certain extent when the anti-seismic building pile foundation absorbs shock, and the shock absorption effect is greatly improved; the setting of boss for be connected more firmly between seal receptacle lower part and the spliced pole, and can realize good sealed between boss and the seal receptacle, effectively prevent that the concrete from leaking to in the seal receptacle from junction between them.
Further, concrete pouring in the step (3) comprises the following specific steps: forming a circle of partition walls on the periphery of the cylindrical frame by using wood plates, wherein the height of each wood plate is 0.8-1m, then forming a circle of partition walls on the periphery of the boss frame by using the wood plates, and connecting adjacent wood plates through screws; a wood plate is also arranged at the part of the bottom of the boss frame extending out of the cylindrical frame, and the wood plate is tightly pressed on the lower surface of the boss frame through a hydraulic jack; then, enclosing a partition wall outside the square frame by using a wood board, arranging the wood board at the part of the bottom of the square frame extending out of the cylindrical frame, and pressing the wood board on the lower surface of the square frame through a supporting piece; then pouring concrete into the square frame and the cylindrical frame; the wood plates are arranged on the part, extending out of the cylindrical frame, of the square frame and the part, extending out of the cylindrical frame, of the bottom of the boss frame, so that concrete can not flow out of the part when pouring, the connecting column, the bearing platform of the new pile foundation and the boss can be poured and formed at one time, and construction efficiency is improved.
Further, the supporting piece is a hydraulic jack; the supporting effect is good, and the control is convenient.
Further, the damping device comprises a shell, a piston piece and a damping component arranged in the shell; when the damping device is installed, the shell is connected with a bearing platform of a new pile foundation through the steel nails, and then the piston piece is connected with a bearing platform of an original pile foundation through the steel nails, so that the shell is ensured to float along with the new pile foundation, and the piston piece floats along with the original pile foundation; the two parts of the damping device are respectively connected with the original pile foundation and the new pile foundation, so that when the original pile foundation floats relative to the new pile foundation due to an earthquake, the damping part between the moving part and the shell can well damp the building, and the anti-seismic effect is good.
Furthermore, 2 semicircular steel plates are respectively positioned at the upper side and the lower side of the arc-shaped steel plate, an upper connecting groove for the upper part of the middle plate to penetrate through is formed in the semicircular steel plate at the upper part, and a lower connecting groove for the lower part of the middle plate to penetrate through is formed in the semicircular steel plate at the lower part; during welding, two ends of the arc-shaped steel plate respectively penetrate into the upper connecting groove and the lower connecting groove to be assembled and then are welded; during welding, the middle plate penetrates into the upper connecting groove and the lower connecting groove in advance, and then welding is performed, so that the middle plate is connected with the upper connecting plate and the lower connecting plate more firmly, and the sealing effect is better.
In summary, the invention has the following advantages: the installation of the damping device can be completed without arranging a supporting device to support the original pile foundation, so that the construction difficulty is reduced, and the construction efficiency is effectively improved; in addition, in the mode, the size of the damping device is not required to be specifically limited, and the application range of the damping device is wider; the shock absorption of the old building is realized under the condition of not changing any part of the original building by the mode, so that the original building has a good shock-resistant effect; the damping device is wholly wrapped in the sealing seat through the arrangement of the sealing seat, so that the mutual action between two parts of the damping device can be still flexibly realized, the damping effect is better, and the anti-seismic degree is higher; except the inside other positions of seal receptacle all can directly pour the concrete, go up new pile foundation body firm in connection, stability is high.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.
Fig. 2 is an enlarged view of a point a in fig. 1.
Fig. 3 is an enlarged view at B in fig. 1.
Fig. 4 is an enlarged view at C in fig. 1.
Fig. 5 is an enlarged view at D in fig. 1.
Fig. 6 is a schematic structural view of the shock absorbing device of the present invention.
Fig. 7 is a schematic structural diagram of a second embodiment of the present invention.
Fig. 8 is a top view of fig. 7.
Fig. 9 is an enlarged view at E in fig. 7.
Fig. 10 is an enlarged view at F in fig. 7.
Detailed Description
In order to make the technical solutions of the present invention better understood, 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.
Example 1
A pile foundation reinforcement method for building engineering construction, the pile foundation structure after the construction is as shown in fig. 1-6, including original pile base member 1, new pile base member 2 and with said upper, new pile foundation matched with damping device; specifically, the damping device comprises a sealing seat 3 and a damping support 4 arranged between an upper pile foundation body and a new pile foundation body; the lower part of the sealing seat 3 is connected with the new pile foundation body 2, and a sealing structure is arranged between the upper part of the sealing seat 3 and the original pile foundation body 1; the sealing seat 3 comprises a first seat body 31 and a second seat body 32 which are welded with each other, specifically, the first seat body 31 comprises an upper connecting plate 311, a lower connecting plate 312 and a middle plate 313 arranged between the upper connecting plate and the lower connecting plate, the upper part of the middle plate 313 is fixedly connected with the upper connecting plate 311 in a welding manner, and the lower part of the middle plate 313 is fixedly connected with the lower connecting plate 312 in a welding manner; the upper connecting plate 311, the lower connecting plate 312 and the middle plate 313 are all made of stainless steel, so that the anti-corrosion and anti-rust plate has a good anti-corrosion and anti-rust effect and good deformation capability; the upper connecting plate 311 and the lower connecting plate 312 are semi-circular steel plates, and the middle plate 313 is an arc-shaped steel plate; the thicknesses of the upper connecting plate 311 and the lower connecting plate 312 are greater than that of the middle plate 313, preferably, the thicknesses of the upper connecting plate 311 and the lower connecting plate 312 are 1-5cm, and the thickness of the middle plate 313 is 1-2cm, so that the middle plate can be well deformed; in order to enable the middle plate to be firmly connected with the upper and lower connecting plates, an upper connecting groove 314 for the upper part of the middle plate to penetrate through is arranged on the upper connecting plate 311, a lower connecting groove 315 for the lower part of the middle plate to penetrate through is arranged on the lower connecting plate 312, and during welding, the middle plate firstly penetrates into the upper and lower connecting grooves and then is welded, so that the middle plate is firmly connected with the upper and lower connecting plates; the structure of the second seat body is the same as that of the first seat body, so that the description is omitted; when the first seat body and the second seat body are connected, a cylindrical protective cover is formed, and the damping device is covered in the cylindrical protective cover; the gap between the first base body and the second base body can be directly welded to realize the connection of the first base body and the second base body.
The sealing structure comprises a sealing part 5 arranged on the original pile base body 1, a first matching part 6 arranged on the first base body 31 and a second matching part 7 arranged on the second base body 32; specifically, the sealing part 5 comprises an annular convex part 51 arranged on the original pile foundation body, a groove 52 arranged on the annular convex part and a sealing element 53 arranged in the groove, the groove is also annular, and the sealing element 53 is a rubber sealing ring directly purchased from the market; and after assembly, the outer part of the sealing member 53 protrudes outside the groove 52; the first matching component 6 comprises an open slot 61 which is arranged on the first seat 31 and is matched with the annular convex part, and a flexible layer 62 made of flexible material is arranged on the inner wall of the open slot 61; the size of the open groove 61 is equal to that of the annular convex part, and the flexible layer 62 is made of rubber and can be directly bonded in the open groove through glue; due to the existence of the flexible layer, interference fit can be realized between the annular convex part and the open slot, and good sealing is further realized; the second matching part 7 comprises a ring groove 71 which is arranged on the second seat body 32 and is matched with the annular convex part, and a sealing layer 72 made of flexible materials is arranged on the inner wall of the ring groove 71; the size of the ring groove 71 is equal to that of the annular convex part, and the sealing layer 72 is made of rubber and can be directly bonded in the ring groove 71 through glue; due to the existence of the sealing layer 72, interference fit between the annular convex part and the annular groove 71 can be achieved, and good sealing is achieved.
The lower part of the sealing seat is connected with the new pile foundation body 2, specifically, the new pile foundation body 2 comprises a bearing platform 22, a pile 23 and a connecting column 24 for connecting the bearing platform and the pile, a circle of boss 21 is formed on the outer wall of the connecting column in a pouring mode, when the lower connecting plate is connected with the new pile foundation body, the upper surface of the lower connecting plate can abut against the lower surface of the boss 21, and the lower connecting plate is fixedly connected with the boss 21 through screws; preferably, a gasket is arranged between the lower connecting plate and the boss 21, and the gasket is made of rubber.
The damping support 4 comprises a housing 41 made of stainless steel, a piston 42 and a damping part 43 arranged in the housing, the piston 42 is a stainless steel rod, one end of the piston 42 is fixedly connected with the pile foundation body, and the other end penetrates into the housing 41; one end of the piston piece 42 penetrating into the shell is connected with an anti-falling part 44, the anti-falling part 44 is a stainless steel disc, and the two parts are fixedly connected together by welding; the damping component 43 comprises a plurality of elastic plates 431 arranged in the shell, the elastic plates 431 are uniformly distributed along the length direction of the shell at intervals, and the left end and the right end of each elastic plate 431 are fixedly connected with the inner wall of the shell respectively; preferably, the cross section of the elastic plate 431 is a wave structure, where the wave structure is arranged in a wave shape; in order to achieve a better damping effect and enhance the structural stability of the damping component, the wave crests and the wave troughs of the upper elastic plate and the lower elastic plate are arranged in a staggered mode, so that part of the wave crests and part of the wave troughs are mutually abutted between the two adjacent upper elastic plates 431 and the adjacent lower elastic plates 431, and the structural stability is enhanced.
Further, a plurality of elastic damping members 432 are further arranged between the two elastic plates 431 which are adjacent up and down, the elastic damping members 432 are springs, the elastic damping members 432 are arranged at positions where the wave crests and the wave troughs of the elastic plates are not abutted, one end of each elastic damping member 432 is connected with the wave crest of the upper elastic plate 431, and the other end of each elastic damping member 432 is connected with the wave trough of the lower elastic plate 431.
Example 2
This example differs from example 1 in that: as shown in fig. 7 to 10, the sealing member 5 includes an annular sealing groove 54, an upper pressing portion 55 and a lower pressing portion 56, which are disposed on the primary pile foundation body, the upper pressing portion 55 and the lower pressing portion 56 are formed on the primary pile foundation body by casting concrete, the upper pressing portion 55 and the lower pressing portion 56 are both disposed in an annular structure, and the annular sealing groove 54 is disposed between the upper pressing portion and the lower pressing portion; during assembly, the upper connecting plate can penetrate into the annular sealing groove 54; further, a first leakage-proof layer 551 is arranged on the lower surface of the upper compressing portion 55, a second leakage-proof layer 561 is arranged on the upper surface of the lower compressing portion 56, and a third leakage-proof layer 541 is arranged in the annular sealing groove 54; the first leakage-proof layer 551, the second leakage-proof layer 561 and the third leakage-proof layer 541 are all made of rubber; preferably, the first anti-leakage layer 551 and the upper pressing portion 55, the second anti-leakage layer 561 and the lower pressing portion 56, and the third anti-leakage layer 541 and the annular sealing groove 54 are all bonded by glue; furthermore, a plurality of grooves are formed among the lower surface of the upper pressing part 55, the upper surface of the lower pressing part 56 and the inner surface of the annular sealing groove 54 by chisels, and the grooves can contain more glue, so that the bonding effect between the upper pressing part and the annular sealing groove is enhanced.
Preferably, the length of the lower pressing portion 56 is greater than the length of the upper pressing portion 55, two welding grooves 552 are formed in the upper pressing portion 55, and the two welding grooves 552 are arranged in a left-right symmetrical manner; the first matching part 6 comprises a first clamping groove 63 and a first arc-shaped sealing element 64 which are arranged at the upper end of the first seat body, the first clamping groove 63 is arranged on the upper connecting plate, the first arc-shaped sealing element 64 is arranged in a semicircular shape, and the first arc-shaped sealing element 64 is arranged in the clamping groove; the second matching part 7 comprises a second clamping groove 73 and a second arc-shaped sealing element 74 which are arranged at the upper end of the second seat body; the second clamping groove 73 is formed in the upper connecting plate, the second arc-shaped sealing element 74 is arranged in the second clamping groove, and the second arc-shaped sealing element 74 is arranged in a semicircular shape; the first and second arcuate seals 64, 74 are each made of rubber.
The specific construction method comprises the following steps: (1) determining an original pile foundation of an original building: determining the position of an original pile foundation according to an upright post of an original building, and then digging downwards one circle around the periphery of the upright post until a bearing platform is exposed; then continuously digging downwards around a circle of the periphery of the bearing platform, exposing the piles below the bearing platform, and stopping digging downwards until the piles are exposed for 7-10 m; then, a shovel is used for completely cleaning soil between the piles; (2) pouring a new pile foundation bottom layer: erecting an annular frame by using reinforcing steel bars at the periphery of the dug-out pile, then enclosing a circle of partition walls by using wood plates outside the frame, connecting adjacent wood plates by using screws, wherein the height of each wood plate is 12m, and the distance between the inner wall of each wood plate and the outer wall of the frame is 0.5 m; then concrete is poured in the partition wall, and after the concrete is solidified, the wood board is removed to form a bottom layer of the new pile foundation;
(3) pouring a new pile foundation connecting column and a bearing platform: a cylindrical frame is erected on the bottom layer through steel bars, and a boss frame is erected on the upper portion of the cylindrical frame through the steel bars; then, a square frame is erected on the top of the boss frame by using reinforcing steel bars, a circle of partition wall is formed on the periphery of the cylindrical frame by using wood plates, adjacent wood plates are connected through screws, the height of each wood plate is 0.8-1m, and a space of 0.5m is reserved between the inner wall of each wood plate and the outer wall of the cylindrical frame; a circle of partition walls are formed on the periphery of the boss frame by using wood plates, adjacent wood plates are connected through screws, the height of each wood plate is 0.3m, and a space of 0.5m is reserved between the inner wall of each wood plate and the outer wall of the cylindrical frame; wood plates are also arranged on the part of the bottom of the boss frame extending out of the cylindrical frame, adjacent wood plates are connected through screws, and the wood plates are tightly pressed on the lower surface of the boss frame through a hydraulic jack; then, enclosing a partition wall outside the square frame by using a wood board, directly attaching the wood board outside the square frame, arranging the wood board at the part of the bottom of the square frame extending out of the cylindrical frame, connecting adjacent wood boards through screws, and pressing the wood board on the lower surface of the square frame through a hydraulic jack; pouring concrete into the square frame, the cylindrical frame and the boss frame, wherein after the concrete is solidified, the square frame becomes a bearing platform of a new pile foundation, the cylindrical frame becomes a connecting column of the new pile foundation, the boss frame forms a boss, and the bearing platform is connected with the bottom layer through the connecting column;
(4) installing a damping device: installing the damping device between a bearing platform of a new pile foundation and a bearing platform of an original pile foundation, and taking care to avoid piles connected with the original pile foundation during installation; when the damping device is installed, the shell is connected with a bearing platform of a new pile foundation through the steel nails, and then the piston piece is connected with a bearing platform of an original pile foundation through the steel nails, so that the shell is ensured to float along with the new pile foundation, and the piston piece floats along with the original pile foundation; (5) removing the pile of the original pile foundation: chiseling piles in front of an original pile foundation bearing platform and a new pile foundation bearing platform through a tool to enable the force of the original pile foundation to act on the damping device; (6) installing a sealing seat: transporting 4 semicircular steel plates and 2 arc-shaped steel plates to a construction site, and respectively welding the 2 semicircular steel plates and the 1 arc-shaped steel plate into a half-edge cylinder; during welding, the upper end and the lower end of the arc-shaped steel plate are respectively penetrated into the upper connecting groove and the lower connecting groove, and welding operation is carried out after assembly is finished; after the two half-side cylinders are welded, connecting the lower ends of the two half-side cylinders with the bosses on the connecting columns, hermetically matching the upper ends of the half-side cylinders with the upright columns, welding the two half-side cylinders into a complete sealing seat, and isolating the damping device in the sealing seat; (7) pouring and fixing: after the sealing seat is welded, concrete is poured in the dug-out pit on the ground, after the concrete is solidified, the connection of the original pile foundation and the new pile foundation is realized, and the construction of the pile foundation is completed.
It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all 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.
Claims (1)
1. A pile foundation reinforcement method for building engineering construction, the building pile foundation includes the original pile foundation (1), new pile foundation (2) and shock-absorbing device cooperating with said upper, new pile foundation; the method comprises the following steps:
determining an original pile foundation of an original building: determining the position of an original pile foundation according to an upright post of an original building, and then digging downwards one circle around the periphery of the upright post until a bearing platform is exposed; then continuing to dig downwards to expose the piles below the bearing platform, and continuing to dig downwards until the piles are exposed for 7-10 m; then completely cleaning soil between the piles;
pouring a new pile foundation bottom layer: building a ring of annular frame outside the dug pile by using steel bars, and then enclosing a ring of partition walls by using wood plates outside the frame, wherein the height of each wood plate is 1-2 m; then concrete is poured in the partition wall to form a bottom layer of the new pile foundation;
pouring a new pile foundation connecting column and a bearing platform: a cylindrical frame is erected on the bottom layer through steel bars, and a boss frame is erected on the upper portion of the cylindrical frame through the steel bars; then, a square frame is built on the top of the boss frame by using steel bars, then concrete is poured, so that part of the square frame becomes a bearing platform of a new pile foundation, part of the cylindrical frame becomes a connecting column of the new pile foundation, part of the boss frame becomes a boss, and the bearing platform is connected with the bottom layer through the connecting column; the bearing platform, the connecting column and the bottom layer of the new pile foundation are in an I-shaped structure; the concrete pouring method comprises the following concrete steps: forming a circle of partition walls on the periphery of the cylindrical frame by using wood plates, wherein the height of each wood plate is 0.8-1m, then forming a circle of partition walls on the periphery of the boss frame by using the wood plates, and connecting adjacent wood plates through screws; a wood plate is also arranged at the part of the bottom of the boss frame extending out of the cylindrical frame, and the wood plate is tightly pressed on the lower surface of the boss frame through a hydraulic jack; then, enclosing a partition wall outside the square frame by using a wood board, arranging the wood board at the part of the bottom of the square frame extending out of the cylindrical frame, and pressing the wood board on the lower surface of the square frame through a supporting piece; then pouring concrete into the square frame and the cylindrical frame;
installing a damping device: installing the damping device between a bearing platform of a new pile foundation and a bearing platform of an original pile foundation, and taking care to avoid piles connected with the original pile foundation during installation;
removing the pile of the original pile foundation: chiseling piles in front of an original pile foundation bearing platform and a new pile foundation bearing platform through a tool to enable the force of the original pile foundation to act on the damping device;
installing a sealing seat: the sealing seat (3) comprises a first seat body (31) and a second seat body (32) which are welded with each other, and the sealing structure comprises a sealing part (5) arranged on the original pile foundation (1), a first matching part (6) arranged on the first seat body (31) and a second matching part (7) arranged on the second seat body (32); the first seat body (31) comprises an upper connecting plate (311), a lower connecting plate (312) and a middle plate (313) arranged between the upper connecting plate and the lower connecting plate, and the middle plate (313) is made of stainless steel; during installation, 4 semicircular steel plates and 2 arc-shaped steel plates are transported to a construction site, and the 2 semicircular steel plates and the 1 arc-shaped steel plate are respectively welded into a half-edge cylinder; then, the lower ends of the cylinder bodies on the two half sides are connected with the bosses, the upper ends of the cylinder bodies on the two half sides are in sealing fit with the upright posts, then the cylinder bodies on the two half sides are welded into a complete sealing seat, and the damping device is isolated in the sealing seat; the two semicircular steel plates are respectively positioned at the upper side and the lower side of the arc-shaped steel plate, an upper connecting groove (314) for the upper part of the middle plate to penetrate through is arranged on the semicircular steel plate at the upper part, and a lower connecting groove (315) for the lower part of the middle plate to penetrate through is arranged on the semicircular steel plate at the lower part; during welding, two ends of the arc-shaped steel plate respectively penetrate into the upper connecting groove and the lower connecting groove to be assembled and then are welded; the lower part of the sealing seat (3) is connected with the new pile foundation (2), and a sealing structure is arranged between the upper part of the sealing seat (3) and the original pile foundation (1); the sealing structure comprises a sealing component (5) arranged on the original pile base body (1), a first matching component (6) arranged on the first base body (31) and a second matching component (7) arranged on the second base body (32); the sealing part (5) comprises an annular convex part (51) arranged on the original pile foundation body, a groove (52) arranged on the annular convex part and a sealing element (53) arranged in the groove, the outer part of the sealing element (53) protrudes out of the groove (52), and the annular convex part and the open slot can be separated from each other when an earthquake occurs; the bearing platform of the original pile foundation, the bearing platform of the new pile foundation and the damping device are all arranged in the seal seat, a space is reserved between the upper surface of the bearing platform of the original pile foundation and the seal seat, and a space is reserved between the side wall of the bearing platform of the original pile foundation and the seal seat; the support piece is a hydraulic jack; the damping device comprises a shell (41), a piston piece (42) and a damping component (43) arranged in the shell; installation during damping device, it is continuous with the cushion cap of casing and new pile foundation earlier through the steel nail, and later rethread steel nail links to each other piston spare and former pile foundation cushion cap, and it is unsteady to guarantee that the casing follows new pile foundation, and piston spare is followed former pile foundation and is floated
Pouring and fixing: and pouring concrete in the dug pit on the ground, and after the concrete is solidified, realizing the connection of the original pile foundation and the new pile foundation.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910919730.4A CN110593328B (en) | 2017-09-15 | 2017-09-15 | Pile foundation reinforcing method for building engineering construction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710830921.4A CN107859078B (en) | 2017-09-15 | 2017-09-15 | The reinforcement means of building pile foundation |
| CN201910919730.4A CN110593328B (en) | 2017-09-15 | 2017-09-15 | Pile foundation reinforcing method for building engineering construction |
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| CN201710830921.4A Division CN107859078B (en) | 2017-09-15 | 2017-09-15 | The reinforcement means of building pile foundation |
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| CN110593328A true CN110593328A (en) | 2019-12-20 |
| CN110593328B CN110593328B (en) | 2020-10-20 |
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| CN201910919730.4A Active CN110593328B (en) | 2017-09-15 | 2017-09-15 | Pile foundation reinforcing method for building engineering construction |
| CN201710830921.4A Active CN107859078B (en) | 2017-09-15 | 2017-09-15 | The reinforcement means of building pile foundation |
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| CN111877387B (en) * | 2018-04-13 | 2022-01-25 | 安徽携昇建设工程有限公司 | Civil engineering pile foundation auxiliary fixture |
| CN108571003A (en) * | 2018-06-29 | 2018-09-25 | 北京瑞博远绿色建筑科技有限公司 | A kind of stone structure Gu decorated archway base isolation system and its reinforcement means |
| CN114197514B (en) * | 2022-01-12 | 2023-06-30 | 中建新城建设工程有限公司 | Existing pile foundation vibration isolation reinforcing device and construction method thereof |
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| CN107859078A (en) | 2018-03-30 |
| CN107859078B (en) | 2019-10-18 |
| CN110593328B (en) | 2020-10-20 |
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Application publication date: 20191220 Assignee: Quzhou Jingli Labor Service Co., Ltd. Assignor: Jingli Construction Co.,Ltd. Contract record no.: X2022330000398 Denomination of invention: Pile Foundation Reinforcement Method for Construction Engineering Granted publication date: 20201020 License type: Common License Record date: 20220810 |
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