CN101967836A - Reinforcing method of building foundation by using jacking method - Google Patents
Reinforcing method of building foundation by using jacking method Download PDFInfo
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- CN101967836A CN101967836A CN2010105007136A CN201010500713A CN101967836A CN 101967836 A CN101967836 A CN 101967836A CN 2010105007136 A CN2010105007136 A CN 2010105007136A CN 201010500713 A CN201010500713 A CN 201010500713A CN 101967836 A CN101967836 A CN 101967836A
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Abstract
The invention discloses a reinforcing method of a building foundation by using a jacking method, which comprises the following construction steps of: digging guide grooves on both sides and the bottom of the foundation; putting concrete cushion layers and steel plates; permanently and firmly supporting the foundation by using steel wedge blocks on the steel plates; then binding reinforcing cages on the steel plates on the periphery of the steel wedge blocks; casting high-strength concrete; thoroughly enwrapping the steel wedge blocks and the steel plates by using the concrete to permanently support the foundation together; and preventing a building from sinking again.
Description
Technical field:
The present invention relates to a kind of jacking method building foundation reinforcement means.
Background technology:
The common buildings design life is 50 years, but empirical discovery, considerable part is built up phenomenons such as promptly occurring wall body cracking in time several years of back, this phenomenon majority is owing to the foundation uneven settlement that foundation soil is dealt with improperly or local foundation soil is soaked by rainwater to cause, also has the part building to make the building integral sinking because of increasing layer.Strengthening foundation width is to solve the effective means that building sinks, and whole building of evenly sinking should wholely strengthen foundation width, and the building of differential settlement only need strengthen and sedimentation part foundation width takes place gets final product.
Summary of the invention:
For overcoming the defective of prior art, the object of the present invention is to provide a kind of jacking method building foundation reinforcement means, can effectively solve the settlement issues of building foundation.
Technical solution problem of the present invention adopts following technical scheme:
Jacking method building foundation reinforcement means, construction as follows:
The first step: building foundation is divided into some elementary sections, excavates guide groove to the following 1-1.5m of foundation bottom along the edge of foundation both sides in each elementary section, squeeze into steel sheet pile in advance at the sidewall of guide groove and protect;
Second step: the thick fast hardening concrete mattress layer of one deck 200mm is built in the guide groove bottom surface at excavation, or lays prefabricated concrete mattress layer, and lays steel plate on described mattress layer; Each limit of steel plate is shorter than concrete mattress layer 30mm as topping;
The 3rd step: balance is placed a hydraulic jack on described steel plate, and interim support is done by jack jacking building foundation portion;
The 4th step: symmetry is squeezed into two gad pieces respectively in described jack both sides, carve piece with described two steel building foundation is formed permanent firmly support, afterwards with jack retraction and taking-up, then squeeze into the 3rd gad piece in the position of putting jack originally, and with the permanent support of these three gad pieces as the basis;
The 5th step: the assembling reinforcement cage, build high-strength concrete, concrete fully wraps up described three gad pieces, steel plates, together forms the permanent support on described basis; Stop the sinking once more of building.
Compared with the prior art, beneficial effect of the present invention is embodied in:
Differential settlement can cause building body to tilt and structure crack, has had a strong impact on the safe in utilization of structure, and general way is discarded or with its demolition, consumes costly; Building increases in the layer construction, and the ground bearing load increases, and also can make building that bulk settling takes place, and has also influenced the safe in utilization of structure.This method is expensive little, method is simple, has then played the effect of throwing a sprat to catch a herring undoubtedly.
Description of drawings:
Fig. 1 is the structure chart of the building foundation of an elementary section; Fig. 2 is the structure chart of basic both sides and following excavation guide groove; Fig. 3 is the structure chart of interior laying of guide groove or fluid concrete mattress layer; Fig. 4 is the structure chart with jack jacking basis; Fig. 5 is for squeezing into the structure chart that steel is carved piece in the jack both sides; Fig. 6 takes off jack to squeeze into the structure chart that three steel are carved piece and assembling reinforcement cage under the basis; The structure chart on steel concrete jacking basis after Fig. 7 finishes for constructing.
Number in the figure: 1 basis, 2 guide grooves, 3 steel sheet piles, 4 concrete mattress layers, 5 steel plates, 6 jack, 7 steel are carved piece, 8 reinforcing cages, 9 concrete.
Below pass through the specific embodiment, and the invention will be further described in conjunction with the accompanying drawings.
The specific embodiment:
Embodiment: the jacking method building foundation reinforcement means of present embodiment, construction as follows:
The first step: referring to Fig. 1,2, building foundation is divided into some elementary sections, and along the both sides of edges excavation guide groove 2 on basis 1, guide groove is excavated to the following 1-1.5m of foundation bottom in each elementary section, if the basis is buried deeplyer, can squeeze into steel sheet pile 3 in advance at the sidewall of guide groove 2 and protect;
Second step: referring to Fig. 3, build the thick fast hardening concrete mattress layer 4 of one deck 200mm in the guide groove bottom surface of excavation, or lay prefabricated concrete mattress layer, and on described mattress layer, lay steel plate 5; Each limit of steel plate is shorter than concrete mattress layer 30mm as topping;
The 3rd step: referring to Fig. 4, balance is placed a hydraulic jack 6 on described steel plate 5, and interim support is done by jack jacking building foundation portion;
The 4th step: referring to Fig. 5, symmetry is squeezed into two gad pieces 7 respectively in described jack both sides, carve piece with described two steel building foundation is formed permanent firmly support, afterwards with jack 6 retractions and taking-up, then squeeze into the 3rd gad piece in the position of putting jack originally, and with the permanent support of these three gad pieces as the basis;
The 5th step: referring to Fig. 6,7, carve assembling reinforcement cage 8 on the steel plate of piece periphery at three steel, build high-strength concrete 9, concrete fully wraps up described three gad pieces, steel plates, together forms the permanent support on described basis; Stop the sinking once more of building.
Claims (1)
1. jacking method building foundation reinforcement means is characterized in that constructing as follows:
The first step: building foundation is divided into some elementary sections, excavates guide groove to the following 1-1.5m of foundation bottom along the edge of foundation both sides in each elementary section, squeeze into steel sheet pile in advance at the sidewall of guide groove and protect;
Second step: the thick fast hardening concrete mattress layer of one deck 200mm is built in the guide groove bottom surface at excavation, or lays prefabricated concrete mattress layer, and lays steel plate on described mattress layer; Each limit of steel plate is shorter than concrete mattress layer 30mm as topping;
The 3rd step: balance is placed a hydraulic jack on described steel plate, and interim support is done by jack jacking building foundation portion;
The 4th step: symmetry is squeezed into two gad pieces respectively in described jack both sides, carve piece with described two steel building foundation is formed permanent firmly support, afterwards with jack retraction and taking-up, then squeeze into the 3rd gad piece in the position of putting jack originally, and with the permanent support of these three gad pieces as the basis;
The 5th step: the assembling reinforcement cage, build high-strength concrete, concrete fully wraps up described three gad pieces, steel plates, together forms the permanent support on described basis; Stop the sinking once more of building.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105007136A CN101967836B (en) | 2010-09-30 | 2010-09-30 | Reinforcing method of building foundation by using jacking method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105007136A CN101967836B (en) | 2010-09-30 | 2010-09-30 | Reinforcing method of building foundation by using jacking method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101967836A true CN101967836A (en) | 2011-02-09 |
| CN101967836B CN101967836B (en) | 2012-02-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105007136A Expired - Fee Related CN101967836B (en) | 2010-09-30 | 2010-09-30 | Reinforcing method of building foundation by using jacking method |
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| CN (1) | CN101967836B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103015448A (en) * | 2012-11-16 | 2013-04-03 | 陕西省建筑科学研究院 | Fracture-free foundation spanning ground fracture houses |
| CN104047306A (en) * | 2014-05-26 | 2014-09-17 | 江苏鼎泰工程材料有限公司 | Method for lifting and centralizing sinking house |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1062573A (en) * | 1990-10-26 | 1992-07-08 | 沈松华 | A kind of method of integral correction inclined chimney |
| JPH09279619A (en) * | 1996-04-15 | 1997-10-28 | Sadao Yamamori | Jack-up construction method for foundation of building |
| CN1818233A (en) * | 2006-03-08 | 2006-08-16 | 中铁隧道勘测设计院有限公司 | Underpinning method of pile ground underground |
| JP4111445B2 (en) * | 2003-10-30 | 2008-07-02 | 積水ハウス株式会社 | Basic settlement settlement method using sandbag |
-
2010
- 2010-09-30 CN CN2010105007136A patent/CN101967836B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1062573A (en) * | 1990-10-26 | 1992-07-08 | 沈松华 | A kind of method of integral correction inclined chimney |
| JPH09279619A (en) * | 1996-04-15 | 1997-10-28 | Sadao Yamamori | Jack-up construction method for foundation of building |
| JP4111445B2 (en) * | 2003-10-30 | 2008-07-02 | 積水ハウス株式会社 | Basic settlement settlement method using sandbag |
| CN1818233A (en) * | 2006-03-08 | 2006-08-16 | 中铁隧道勘测设计院有限公司 | Underpinning method of pile ground underground |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103015448A (en) * | 2012-11-16 | 2013-04-03 | 陕西省建筑科学研究院 | Fracture-free foundation spanning ground fracture houses |
| CN103015448B (en) * | 2012-11-16 | 2015-09-23 | 陕西省建筑科学研究院 | A kind ofly exempt from basis, crack across ground fissure house |
| CN104047306A (en) * | 2014-05-26 | 2014-09-17 | 江苏鼎泰工程材料有限公司 | Method for lifting and centralizing sinking house |
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| Publication number | Publication date |
|---|---|
| CN101967836B (en) | 2012-02-29 |
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Owner name: CHINA COAL MINE CONSTRUCTION GROUP CORPORATION LTD Free format text: FORMER OWNER: CHINA COAL NO. 3 CONSTRUCTION (GROUP) CORPORATION LTD. Effective date: 20110920 |
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Free format text: CORRECT: ADDRESS; FROM: 234000 SUZHOU, ANHUI PROVINCE TO: 230601 HEFEI, ANHUI PROVINCE |
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Effective date of registration: 20110920 Address after: 230601 No. 1, Pioneer Road, Hefei Economic Development Zone, Anhui Applicant after: China Coal Mine Construction Group Co., Ltd. Address before: 234000 Anhui city in Suzhou province near the River Road No. 215 Applicant before: China Coal No.3 Construction (Group) LLC |
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Granted publication date: 20120229 Termination date: 20120930 |