CN102444147A - Slant correction method for building - Google Patents
Slant correction method for building Download PDFInfo
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- CN102444147A CN102444147A CN2011103497686A CN201110349768A CN102444147A CN 102444147 A CN102444147 A CN 102444147A CN 2011103497686 A CN2011103497686 A CN 2011103497686A CN 201110349768 A CN201110349768 A CN 201110349768A CN 102444147 A CN102444147 A CN 102444147A
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Abstract
The invention relates to a slant correction for a building, particularly to a slant correction method for a building. The slant correction method for a building disclosed by the invention solves the problem that the present slant correction method for a building breaks an original building foundation. The slant correction method for a building comprises the following steps of: vertically and downwards constructing a pilot tunnel at a place 1.5-3 m away from a to-be-constructed underpinned pile on the bottom of the building; constructing an adit communicating the pilot tunnel with the to-be-constructed underpinned pile in the pilot tunnel; vertically and downwards constructing a main tunnel on the end part of the adit; placing a reinforcement cage in the main tunnel, pouring concrete in the main tunnel, and keeping a distance of 0.6-0.8 m between the top of the concrete and the bottom of a foundation beam; excavating the peripheral earth and stone of the building foundation beam, and constructing a reinforced foundation beam; installing a jack on the underpinned pile, and lifting to a designed elevation; and pouring a part of concrete between the underpinned pile and the reinforced foundation beam. The method disclosed by the invention furthest reduces a disturbance on an original building foundation, and is widely suitable for a slant correction for a building.
Description
Technical field
The present invention relates to the slant correction of building, be specially a kind of sloped correcting method of building.
Background technology
Structure foundation soil the problem that whole building tilts can occur after the differential settlement distortion takes place.The method that adopts at present has the anchor rod static pressure pile foundation to underpin the job practices of jacking, the job practices that the manually digging hole underpinned pile is reinforced, the job practices that horizontal soil digging correction combines with grouting and reinforcing etc.The job practices that the anchor rod static pressure pile foundation underpins jacking mainly is to utilize building on the basis that focuses on building, to dig out piling hole and bolthole; Bury anchor pole then underground; With jack stake is pressed in the piling hole in the basis piecemeal through reaction frame by the anchor pole counter-force, this method has caused destruction to the building foundation.The job practices that the manually digging hole underpinned pile is reinforced is the rectangle construction base tunnel that digs on the underpinning next door intending; Then towards the base position level to digging to the underpinned pile position; Vertically dig again to design elevation; Pour into slightly expanded concrete or slightly expanded concrete behind the pile and add the jackstone concrete to foundation bed, accomplish reinforcing building; This method is built in the process carrying out pile concrete, needs cut a hole the basis processing such as hair, can cause destruction to a certain extent to the basis.The job practices that horizontal soil digging correction combines with grouting and reinforcing is that along continuous straight runs is drawn below the little side group plinth of building subsidence and dug, and takes out an amount of foundation soil, and the bearing area of substrate is reduced; Under the effect of superstructure load, this side foundation soil subsidiary stress increases, and causes the sedimentation that ground is new; The differential settlement of adjustment ground; Superstructure is progressively resetted, reach the purpose that correction is set upright, through the method for slip casting ground is reinforced then; This method is bigger to former foundation soil disturbance in drawing the process of digging.Generally speaking, these methods have all been destroyed the basis of building.
Summary of the invention
The present invention provides a kind of sloped correcting method of building in order to solve the problem that the existing building sloped correcting method can destroy original constructure base.
The present invention adopts following technical scheme to realize: a kind of sloped correcting method of building comprises the steps:
(1), each item preparation before constructing, in that desire makes up underpinned pile 1.5-3m place constructing pilot tunnel vertically downward apart from the building bottom, the diameter of pilot tunnel is 0.8-1.2m, the degree of depth of pilot tunnel is the grade beam below 1.6-2m place of the bottom of pilot tunnel apart from building; The quantity of pilot tunnel is confirmed according to quantity and position that building bottom desire makes up underpinned pile, but each desire makes up pilot tunnel of underpinned pile side dressing worker or two or three desires make up the shared pilot tunnel of underpinned pile; Calculate according to superstructure load, structure types, the type of foundation of building the position of said underpinned pile, and these computational methods are as well known to those skilled in the art;
(2), in pilot tunnel, construct, the height of adit is 1.5-2m, and width is 1-1.5m to being communicated with the adit that pilot tunnel and desire make up between the underpinned pile;
(3), the main hole of constructing vertically downward in the end of adit, the diameter in main hole is 0.8-1.5m; The degree of depth in main hole is that the stratum condition of being surveyed by ground determines, depends on the absolute altitude of bearing stratum and stretch into the bearing stratum certain altitude that the depth calculation in main hole is those skilled in the art's a common practise;
(4), in main hole, put into reinforcing cage, use intensity main hole to be built as the concrete of C30-C60, make concrete top apart from the grade beam bottom 0.6-0.8m, build the bottom that the back forms underpinned pile;
(5), the earthwork of building foundation beam periphery is dug up; Dig through each top, main hole and carry out the reinforcement grade beam construction that intensity is C30-C60; Jack is installed on underpinned pile is withstood the reinforcement grade beam, the superstructure of building is raised to design elevation according to building inclination deviation and structural load grading control;
(6), use intensity to build until apart from reinforcement grade beam 0.1m place the part between underpinned pile and the reinforcement grade beam, remainder is built closely knit with harsh concrete, form the top of underpinned pile as the concrete of C30-C60;
(7), pilot tunnel, adit and building foundation beam periphery earth excavation place are carried out backfill.
The invention belongs to a kind of in the rectifying by jack up method, do not influence original building absolute altitude and function of use; Adopt pilot drive, adit excavation, main wide open mode of digging; Arrive the counter-force strong point, and adopt hand excavated pile, provide counter-force to support as the ground underpinned pile; Not only farthest reduced the disturbance of original building ground, and can guarantee that the ground underpinned pile provides enough reaction of bearings; Adopt the microdilatancy harsh concrete to clogging between underpinned pile and basic panting beam or original constructure base, can guarantee processing quality back plug mouth.
Yangquan City Yu Kang mountain villa high building arch formula arc-shaped door balcony drops on the mountain villa northeast corner, adjoins with Ning Bolu, and the engineering control scope is the three layers of high building in north side (being designated hereinafter simply as high building) of this bar; High 13.4m; The area of plane is 5.0m * 5.0m, strip foundation, brick mix structure, basic wide 0.8m; Wall thickness 0.37m, itself and southern side high building are symmetrical.High building built up in 2006, because the distortion of foundation soil generation differential settlement causes high building integral body to tilt northwards, high building and bar top fracture open 80～100mm.The principal element of the sedimentation of high building foundation soil, integral inclination is that the foundation soil treatment effect is not good, engineering properties difference and skewness thereof cause; Next is phreatic infiltration and converges the influence to foundation soil strength and distortion.Adopted sloped correcting method of the present invention that high building is administered in 2010; Promptly adopt underpinned pile to foundation soil reinforcement, reinforcement grade beam underpinning beam and jacking rectification; Both satisfy high building in viability foundation strength deformation requirements, satisfied deep layer slip antiskid requirement again.Before the construction, southern side accumulative total deflection 0～1mm, north side largest cumulative settling amount is 3～3.4cm; North side jacking amount 28～31mm during construction, southern side sedimentation 5～6mm; Construction back building deformation, gradient are able to recover: north and south elevation difference 0.001～0.004m, and thing elevation difference 0.002～0.005m meets the requirement of related specifications; The basic slope degree is 6.25 ‰ before the high building jacking rectification; Jacking hypsokinesis gradient is 1.25 ‰; Gradient is less than the inclination permissible value of " Code for design of building " GB 50007-2002 defined, and foundation deformation is in stable state, and high building does not have and produces new crack; Explain that reinforcing, jacking regulation effect are obvious, building deformation tended towards stability already.
Method of the present invention has farthest reduced the disturbance of original building ground, has solved the problem that the existing building sloped correcting method can destroy original constructure base, can be adaptable across the slant correction of building.
Description of drawings
Fig. 1 is the present invention's structural representation in the 3rd step.
Among the figure: the 1-pilot tunnel; The 2-grade beam; The 3-adit; 4-master hole; The 5-superstructure; 6-reinforcement grade beam.
The specific embodiment
A kind of sloped correcting method of building comprises the steps:
(1), each item preparation before constructing; Make up underpinned pile 1.5-3m (1.5m, 2.3m, 3m) in desire below building and locate constructing pilot tunnel 1 vertically downward; The diameter of pilot tunnel 1 is 0.8-1.2m (0.8m, 1m, 1.2m), and the degree of depth of pilot tunnel 1 is that the bottom of pilot tunnel 1 is located for the grade beam 2 below 1.6-2m (1.6m, 1.8m, 2m) apart from building;
(2), in pilot tunnel 1, construct, the height of adit 3 is 1.5-2m (1.5m, 2.8m, 2m), and the width of adit 3 is 1-1.5m (1m, 1.2m, 1.5m) to being communicated with the adit 3 that pilot tunnel 1 and desire make up between the underpinned pile;
(3), the main hole 4 of constructing vertically downward in the end of adit 3, the diameter in main hole is 0.8-1.5m (0.8m, 1.2m, 1.5m);
(4), put into reinforcing cage for 4 li, use intensity main hole 4 to be built, make concrete upper surface, build the bottom that the back forms underpinned pile apart from grade beam 2 bottom 0.6-0.8m (0.6m, 0.7m, 0.8m) as the concrete of C30-C60 in main hole;
(5), the earthwork of building foundation beam 2 peripheries is dug up; Dig through the top in each main hole 4 and carry out reinforcement grade beam 6 constructions that intensity is C30-C60; Jack is installed on underpinned pile is withstood reinforcement grade beam 6, the superstructure 5 of building is raised to design elevation;
(6), use intensity to build until apart from reinforcement grade beam 0.1m place the part between underpinned pile and the reinforcement grade beam 6, remainder is built closely knit with harsh concrete, form the top of underpinned pile as the concrete of C30-C60;
(7), pilot tunnel 1, adit 3 and building foundation beam 2 peripheral earth excavation places are carried out backfill.
Claims (1)
1. the sloped correcting method of a building is characterized in that: comprise the steps:
(1), each item preparation before constructing; Make up 1.5-3m place, underpinned pile place constructing pilot tunnel (1) vertically downward in desire below building; The diameter of pilot tunnel (1) is 0.8-1.2m, and the degree of depth of pilot tunnel (1) is grade beam (2) the below 1.6-2m place of the bottom of pilot tunnel (1) apart from building;
(2), in pilot tunnel (1), construct, the height of adit (3) is 1.5-2m, and the width of adit (3) is 1-1.5m to being communicated with the adit (3) that pilot tunnel (1) and desire make up between the underpinned pile;
(3), the main hole (4) of constructing vertically downward in the end of adit (3), the diameter of main hole (4) is 0.8-1.5m;
(4), put into reinforcing cage, use intensity main hole (4) to be built as the concrete of C30-C60 in lining, main hole (4), make concrete upper surface apart from grade beam (2) bottom 0.6-0.8m, build the bottom that the back forms underpinned pile;
(5), the earthwork of building foundation beam (2) periphery is dug up; Dig through each top, main hole (4) and carry out reinforcement grade beam (6) construction that intensity is C30-C60; Jack is installed on underpinned pile is withstood reinforcement grade beam (6), the superstructure (5) of building is raised to design elevation;
(6), use intensity to build until apart from reinforcement grade beam 0.1m place the part between underpinned pile and the reinforcement grade beam (6), remainder is built closely knit with harsh concrete, form the top of underpinned pile as the concrete of C30-C60;
(7), pilot tunnel (1), adit (3) and building foundation beam periphery earth excavation place are carried out backfill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103497686A CN102444147A (en) | 2011-11-08 | 2011-11-08 | Slant correction method for building |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011103497686A CN102444147A (en) | 2011-11-08 | 2011-11-08 | Slant correction method for building |
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| CN102444147A true CN102444147A (en) | 2012-05-09 |
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| CN2011103497686A Pending CN102444147A (en) | 2011-11-08 | 2011-11-08 | Slant correction method for building |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102817381A (en) * | 2012-08-05 | 2012-12-12 | 河北省建筑科学研究院 | Construction method of rear-embedded pile foundation |
| CN104499515A (en) * | 2014-12-17 | 2015-04-08 | 青岛理工大学 | Drilling and soil taking deviation correcting and treating method for house foundation |
| CN109706987A (en) * | 2019-02-25 | 2019-05-03 | 山东建筑大学 | A kind of frame structure building inside lifting inclination-correcting method |
| TWI665365B (en) * | 2018-11-27 | 2019-07-11 | 國立高雄科技大學 | Checkerboard jacking construction method |
Citations (5)
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|---|---|---|---|---|
| CN1262365A (en) * | 1999-01-22 | 2000-08-09 | 高继良 | Method and apparatus for raising up 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 |
| CN1888331A (en) * | 2006-07-28 | 2007-01-03 | 谭新平 | Guide pit type manual pot holing pile reinforing and underpinning method for building foundation and composite supporting pile |
| JP2009013615A (en) * | 2007-07-02 | 2009-01-22 | Wasc Kiso Jiban Kenkyusho:Kk | Construction method for prefabricated pile, and foundation bearing structure |
| CN102220769A (en) * | 2011-04-15 | 2011-10-19 | 上海天演建筑物移位工程有限公司 | System and method for underpinning and jacking building and adding storeys downwards |
-
2011
- 2011-11-08 CN CN2011103497686A patent/CN102444147A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1262365A (en) * | 1999-01-22 | 2000-08-09 | 高继良 | Method and apparatus for raising up 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 |
| CN1888331A (en) * | 2006-07-28 | 2007-01-03 | 谭新平 | Guide pit type manual pot holing pile reinforing and underpinning method for building foundation and composite supporting pile |
| JP2009013615A (en) * | 2007-07-02 | 2009-01-22 | Wasc Kiso Jiban Kenkyusho:Kk | Construction method for prefabricated pile, and foundation bearing structure |
| CN102220769A (en) * | 2011-04-15 | 2011-10-19 | 上海天演建筑物移位工程有限公司 | System and method for underpinning and jacking building and adding storeys downwards |
Non-Patent Citations (1)
| Title |
|---|
| 刘维威等: "建筑物基础纠偏加固的方法", 《施工技术》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102817381A (en) * | 2012-08-05 | 2012-12-12 | 河北省建筑科学研究院 | Construction method of rear-embedded pile foundation |
| CN104499515A (en) * | 2014-12-17 | 2015-04-08 | 青岛理工大学 | Drilling and soil taking deviation correcting and treating method for house foundation |
| TWI665365B (en) * | 2018-11-27 | 2019-07-11 | 國立高雄科技大學 | Checkerboard jacking construction method |
| CN109706987A (en) * | 2019-02-25 | 2019-05-03 | 山东建筑大学 | A kind of frame structure building inside lifting inclination-correcting method |
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Application publication date: 20120509 |