CN104131585B - Building basis, settlement by soaking salting soil mud jacking piling reduced method correcting and then reinforcing method - Google Patents
Building basis, settlement by soaking salting soil mud jacking piling reduced method correcting and then reinforcing method Download PDFInfo
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- CN104131585B CN104131585B CN201410404450.7A CN201410404450A CN104131585B CN 104131585 B CN104131585 B CN 104131585B CN 201410404450 A CN201410404450 A CN 201410404450A CN 104131585 B CN104131585 B CN 104131585B
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Abstract
The invention provides a kind of building basis, settlement by soaking salting soil mud jacking piling reduced method correcting and then reinforcing method, it is characterised in that comprise the following steps: 1) correction, specifically include: the reverse jetting of substrate；Reverse counterweight；Lay out pile jacking；After integral jacking operation completes, substrate jetting pore pressure power grout sealing is closely knit；2) reinforce, including: arrange by the stake bit plane of each reinforcing building type, the indoor and outdoor earthwork within the scope of excavation and reinforcement；When excavation foundation base tunnel, according to substrate load, by setting sequence of excavation, interval is jumped and is dug in batches；Laying out pile immediately after excavation with guide pit, pile center's line overlaps with body of wall center of gravity, and is laying out pile after the assay was approved, carries out precompressed, until piling bar no longer sinks；Carry out underpining fixing；Clear up substrate gap after underpining jack immediately, implement substrate mud jacking operation, adopt C20 concrete to consolidate。The present invention has the beneficial effect that: effectively raised the security performance of settlement by soaking salting soil building by said method。
Description
Technical field
The present invention relates to the technical field of building trade, refer more particularly to a kind of building basis, settlement by soaking salting soil mud jacking piling reduced method correcting and then reinforcing method。
Background technology
When prior art has subsoil water ground construction of buildings interiorly, by the rightabout lowering of watertable height in building inclination direction, by this way, building is rectified a deviation。
Prior art disadvantageously, time interior ground level of ground water is very deep, do not have the effect to building righting correction。Settlement by soaking salting soil level of ground water is very deep, less than at least 60 meters, well beyond the supporting course of structure foundation, does not also have the effect to building righting correction。
Summary of the invention
The invention provides a kind of building basis, settlement by soaking salting soil mud jacking piling reduced method correcting and then reinforcing method, in order to improve the security performance of settlement by soaking salting soil building。
The invention provides a kind of building basis, settlement by soaking salting soil mud jacking piling reduced method correcting and then reinforcing method, it is characterised in that comprise the following steps:
1) correction, specifically includes: the reverse jetting of substrate, reduces the body back side, building earth bearing strength；Reverse counterweight: the part foundation trench earthwork is transported to the accumulation of between centers indoor, adds local, ground, the body back side, the building loading pressure to ground；Lay out pile jacking, adopts substrate piling mud-jacking technology method that basis is implemented integral jacking, forces the building body weight heart rearwardly to be moved by front；After integral jacking operation completes, substrate jetting pore pressure power grout sealing is closely knit；
2) reinforce, specifically include:
Arrange that by the stake bit plane of each reinforcing building type the indoor and outdoor earthwork within the scope of excavation and reinforcement is temporarily switched off pipeline through walls and trench, thoroughly release ground, the underground installation restraining forces to jacking basis；
When excavation foundation base tunnel, according to substrate load, by setting sequence of excavation, interval is jumped and is dug in batches；
Laying out pile immediately after excavation with guide pit, pile center's line overlaps with body of wall center of gravity, and is laying out pile after the assay was approved, carries out precompressed, until piling bar no longer sinks；Carry out underpining fixing；Clear up substrate gap after underpining jack immediately, implement substrate mud jacking operation, adopt C20 concrete to consolidate。
Preferably, the reverse jetting of described substrate, reduces building body back side earth bearing strength particularly as follows: excavate jetting operation foundation trench at the body back side, building, builds jetting barricade, pre-buried jetting sleeve pipe by laying bricks or stones, lay gutter and catch pit, discharged outside building by construction waste water。
Preferably, being additionally included in enforcement and rectify a deviation in operation, timing erection instrument carries out correction monitoring, finds out relation and the rule of jetting time and correction amount。
Preferably, when being additionally included in building body correction, reserve and reversely settle leeway, tilt quantity is controlled within the scope of safe handling。
Preferably, when base tunnel is cut the earth, structural support measure is taked。
Preferably, when laying out pile, erection instrument carrys out monitoring record, and according to the data calculated, the on-the-spot jacking discrepancy in elevation adjusted and balance each stake position。
The present invention has the beneficial effect that: effectively raised the security performance of settlement by soaking salting soil building by said method。
Accompanying drawing explanation
The flow chart of building basis, the settlement by soaking salting soil mud jacking piling reduced method correcting and then reinforcing method that Fig. 1 provides for the embodiment of the present invention。
Detailed description of the invention
Below in conjunction with accompanying drawing, specific embodiments of the invention are described in detail。It should be appreciated that detailed description of the invention described herein is merely to illustrate and explains the present invention, it is not limited to the present invention。
As it is shown in figure 1, Fig. 1 illustrates the construction process of building basis, the settlement by soaking salting soil mud jacking piling reduced method correcting and then reinforcing method that the present embodiment provides。
The invention provides a kind of building basis, settlement by soaking salting soil mud jacking piling reduced method correcting and then reinforcing method, it is characterised in that comprise the following steps:
1) correction, specifically includes:
A, the reverse jetting of substrate, reduce the body back side, building earth bearing strength；
Concrete, excavate jetting operation foundation trench at the body back side, building, build jetting barricade, pre-buried jetting sleeve pipe by laying bricks or stones, lay gutter and catch pit, construction waste water is discharged outside building；
B, reverse counterweight: the part foundation trench earthwork is transported to the accumulation of between centers indoor, add local, ground, the body back side, the building loading pressure to ground；
C, lay out pile jacking, adopts substrate piling mud-jacking technology method that basis is implemented integral jacking, forces the building body weight heart rearwardly to be moved by front；
After d, integral jacking operation complete, substrate jetting pore pressure power grout sealing is closely knit；
Additionally, implementing to rectify a deviation in operation, timing erection instrument carries out correction monitoring, finds out relation and the rule of jetting time and correction amount。
And, when building body is rectified a deviation, reserve and reversely settle leeway, tilt quantity is controlled within the scope of safe handling。
2) reinforce, specifically include:
A, arrange that by the stake bit plane of each reinforcing building type the indoor and outdoor earthwork within the scope of excavation and reinforcement is temporarily switched off pipeline through walls and trench, thoroughly release ground, the underground installation restraining forces to jacking basis；
B, when excavation foundation base tunnel, according to substrate load, by set sequence of excavation, in batches interval jump dig；
Concrete, when base tunnel is cut the earth, take structural support measure。And by the monitoring of full-time security official scene。
C, laying out pile immediately after excavation with guide pit, pile center's line overlaps with body of wall center of gravity, and is laying out pile after the assay was approved, carries out precompressed, until piling bar no longer sinks；
Concrete, when laying out pile, erection instrument carrys out monitoring record, and according to the data calculated, the on-the-spot jacking discrepancy in elevation adjusted and balance each stake position。
D, carry out underpining fixing；
Concrete, after basis jacking completes, assign professional operation hands to carry out underpining fixing, drilling rod advances and is positioned to rapidly and accurately, and billet, contract plate jam-packed beat jail, reduces rebound amount as far as possible。
E, underpin jack after clear up substrate gap immediately, implement substrate mud jacking operation, adopt C20 concrete to consolidate。
Concrete, fixing special messenger checks pneumatic mortar machine duty at any time, it is to avoid leakage pressure or pneumatics, the position of operation C20 the reinforcement of concrete cannot be adopted manually to consolidate at pneumatic mortar machine。
By foregoing description it can be seen that adopt the method that the present embodiment provides to effectively raise the security performance of settlement by soaking salting soil building。
It is described in detail with specific embodiment below。
Bore 91A-2# building, East and adopt the mud jacking piling reduced method correcting and then reinforcing technology construction of building basis, settlement by soaking salting soil。
1, overview
This building is two unit 3 floor brick mix structure, height 9.3 meters, construction area 756.96 square meter。This floor foundation leaks because of pipeline in use and yard drain is not smooth molten falls into, body of wall basis, front sinks gradually before backward, the maximum settlement discrepancy in elevation is 70mm, building body is integral inclined to front by the back side, maximum inclination 135mm, slope is 135/9300=1.45% severe overweight (standard regulation is not more than 0.7%)。There is slight crack in wall face, but structure does not find to destroy sign temporarily, for recovering the normal usage function in this building, adopts basis mud jacking piling reduced method correcting and then reinforcing technological synthesis correction scheme that this building is carried out correcting and then reinforcing。
2, arrangement and method for construction
A, satisfactory after correcting
The reverse jetting of substrate, reduces the body back side, building earth bearing strength: excavates jetting operation foundation trench at the body back side, building, builds jetting barricade, pre-buried jetting sleeve pipe by laying bricks or stones, lays gutter and catch pit, is discharged outside building by construction waste water。
Reverse counterweight: the part foundation trench earthwork is transported to the accumulation of between centers indoor, adds ground, the body back side, the building local loading pressure to ground in order to correction。
Lay out pile jacking, adopts substrate piling mud-jacking technology method that basis is implemented integral jacking, forces the building body weight heart rearwardly to be moved by front, reaches correction purpose。
After integral jacking operation completes, substrate jetting pore pressure power grout sealing is closely knit。
In construction overall process, construction water management must be strengthened, assign special messenger to guard night, it is prevented that construction water enters base tunnel and foundation trench。
Implement to rectify a deviation in operation, correction monitoring should be carried out by professional's timing erection instrument, find out relation and the rule of jetting time and correction amount。
The correction of building body be sure not and, reserve and reversely settle leeway, tilt quantity is controlled within the scope of safe handling。
B, reinforcement measure
The indoor and outdoor earthwork within the scope of excavation and reinforcement, cuts off pipeline through walls and trench, thoroughly releases ground, the underground installation restraining forces to jacking basis。
In line with can investment reduction to greatest extent, the principle that building safety uses can be met again, under the premise ensureing consolidation effect, for destroying reality, reduce stake bit quantity as much as possible, carry out the water-proofing treatment at position of easily pouring water。91A--2# building lays out pile 60。When excavation foundation base tunnel, according to substrate load, by design sequence of excavation, interval is jumped and is dug in batches, when base tunnel is cut the earth, by the monitoring of full-time security official scene, takes structural support measure if desired。
Laying out pile immediately after excavation with guide pit, pile center's line overlaps with body of wall center of gravity。Lay out pile after the assay was approved, precompressed can be carried out, until piling bar no longer sinks。
It is responsible for erection instrument, monitoring record by special messenger, calculates data, the on-the-spot jacking discrepancy in elevation adjusted and balance each stake position。
Basis is after jacking completes, and assigns professional operation hands to carry out underpining fixing, and drilling rod advances and is positioned to rapidly and accurately, and billet, contract plate jam-packed beat jail, reduces rebound amount as far as possible。
Clearing up substrate gap after underpining jack immediately, implement substrate mud jacking operation, fixing special messenger checks pneumatic mortar machine duty at any time, it is to avoid leakage pressure or pneumatics, the position of operation C20 the reinforcement of concrete cannot be adopted manually to consolidate at pneumatic mortar machine。
3, the duration
60 days this building durations。
4, expense budget
This building correcting and then reinforcing expense budget 480,000 yuan。
Effect after construction
Through surveying, after construction, this building inclination degree exceeds standard and reaches code requirement, and the gradient of its main member is 0.3%。
Obviously, the present invention can be carried out various change and modification without deviating from the spirit and scope of the present invention by those skilled in the art。So, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification。
Claims (5)
1. building basis, settlement by soaking salting soil mud jacking piling reduced method correcting and then reinforcing method, it is characterised in that comprise the following steps:
1) correction, specifically includes:
The reverse jetting of substrate, reduces the body back side, building earth bearing strength；
Reverse counterweight: the part foundation trench earthwork is transported to the accumulation of between centers indoor, adds local, ground, the body back side, the building loading pressure to ground；
Lay out pile jacking, adopts substrate piling mud-jacking technology method that basis is implemented integral jacking, forces the building body weight heart rearwardly to be moved by front；
After integral jacking operation completes, substrate jetting pore pressure power grout sealing is closely knit；
2) reinforce, specifically include:
Arrange that by the stake bit plane of each reinforcing building type the indoor and outdoor earthwork within the scope of excavation and reinforcement is temporarily switched off pipeline through walls and trench, thoroughly release ground, the underground installation restraining forces to jacking basis；
When excavation foundation base tunnel, according to substrate load, by setting sequence of excavation, interval is jumped and is dug in batches；
Laying out pile immediately after excavation with guide pit, pile center's line overlaps with body of wall center of gravity, and is laying out pile after the assay was approved, carries out precompressed, until piling bar no longer sinks；
Carry out underpining fixing；
Clear up substrate gap after underpining jack immediately, implement substrate mud jacking operation, adopt C20 concrete to consolidate。
2. building basis, settlement by soaking salting soil as claimed in claim 1 mud jacking piling reduced method correcting and then reinforcing method, it is characterized in that, being additionally included in enforcement and rectify a deviation in operation, timing erection instrument carries out correction monitoring, finds out relation and the rule of jetting time and correction amount。
3. building basis, settlement by soaking salting soil as claimed in claim 1 mud jacking piling reduced method correcting and then reinforcing method, it is characterised in that when being additionally included in building body correction, reserve and reversely settle leeway, tilt quantity is controlled within the scope of safe handling。
4. building basis, the settlement by soaking salting soil mud jacking piling reduced method correcting and then reinforcing method as described in any one of claims 1 to 3, it is characterised in that when base tunnel is cut the earth, take structural support measure。
5. building basis, settlement by soaking salting soil as claimed in claim 4 mud jacking piling reduced method correcting and then reinforcing method, it is characterised in that when laying out pile, erection instrument carrys out monitoring record, and according to the data calculated, the on-the-spot jacking discrepancy in elevation adjusted and balance each stake position。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410404450.7A CN104131585B (en) | 2014-08-18 | 2014-08-18 | Building basis, settlement by soaking salting soil mud jacking piling reduced method correcting and then reinforcing method |
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| CN201410404450.7A CN104131585B (en) | 2014-08-18 | 2014-08-18 | Building basis, settlement by soaking salting soil mud jacking piling reduced method correcting and then reinforcing method |
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| Publication Number | Publication Date |
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| CN104131585A CN104131585A (en) | 2014-11-05 |
| CN104131585B true CN104131585B (en) | 2016-06-22 |
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| CN201410404450.7A Expired - Fee Related CN104131585B (en) | 2014-08-18 | 2014-08-18 | Building basis, settlement by soaking salting soil mud jacking piling reduced method correcting and then reinforcing method |
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| CN108755779B (en) * | 2018-05-04 | 2020-06-05 | 中科院广州化灌工程有限公司 | Pile pressing and water stopping construction process of pressure-bearing basement anchor rod static pressure pile |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07324341A (en) * | 1994-06-01 | 1995-12-12 | Kajima Corp | Construction method for reinforcing existing pile foundation building |
| CN1123353A (en) * | 1994-11-19 | 1996-05-29 | 唐殿峰 | Correction and reinforcing method for inclined house |
| CN1177048A (en) * | 1997-07-23 | 1998-03-25 | 夏强 | Controlled construction method and apparatus for rectifying inclined building |
| CN1654749A (en) * | 2005-02-28 | 2005-08-17 | 广州大学 | Lean correcting and foundation consolidating method for building by filling water |
| CN102251543A (en) * | 2011-05-06 | 2011-11-23 | 杭州岩土工程有限公司 | Deviation rectification jacking-up method of building |
| CN102561721A (en) * | 2012-02-29 | 2012-07-11 | 化学工业岩土工程有限公司 | Building jacking deviation rectifying method |
-
2014
- 2014-08-18 CN CN201410404450.7A patent/CN104131585B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07324341A (en) * | 1994-06-01 | 1995-12-12 | Kajima Corp | Construction method for reinforcing existing pile foundation building |
| CN1123353A (en) * | 1994-11-19 | 1996-05-29 | 唐殿峰 | Correction and reinforcing method for inclined house |
| CN1177048A (en) * | 1997-07-23 | 1998-03-25 | 夏强 | Controlled construction method and apparatus for rectifying inclined building |
| CN1654749A (en) * | 2005-02-28 | 2005-08-17 | 广州大学 | Lean correcting and foundation consolidating method for building by filling water |
| CN102251543A (en) * | 2011-05-06 | 2011-11-23 | 杭州岩土工程有限公司 | Deviation rectification jacking-up method of building |
| CN102561721A (en) * | 2012-02-29 | 2012-07-11 | 化学工业岩土工程有限公司 | Building jacking deviation rectifying method |
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Granted publication date: 20160622 Termination date: 20180818 |