CN101476339A - Method for reinforcing strip foundation by shoulder pole girder - Google Patents
Method for reinforcing strip foundation by shoulder pole girder Download PDFInfo
- Publication number
- CN101476339A CN101476339A CNA2009100955187A CN200910095518A CN101476339A CN 101476339 A CN101476339 A CN 101476339A CN A2009100955187 A CNA2009100955187 A CN A2009100955187A CN 200910095518 A CN200910095518 A CN 200910095518A CN 101476339 A CN101476339 A CN 101476339A
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- shoulder pole
- pole girder
- strip foundation
- shoulder
- reinforcing
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Abstract
The invention discloses a method for reinforcing a strip foundation by using a shoulder-pole beam, which comprises: lengthwise straddling and casting the shoulder-pole beam in a position required for reinforcement in the strip foundation, arranging reinforcing piles below both sides of the shoulder-pole beam to bear the shoulder-pole beam, utilizing the shoulder-pole beam to share the load of the prior strip foundation, and transferring partial upper load to the reinforcing piles through the shoulder-pole beam. The reinforcing method transfers the load of the strip foundation to the reinforcing piles which then share the load, and has definite load transfer and high safety and reliability so as to be capable of reinforcing the strip foundation. Moreover, the shoulder-pole beam adopted by the method can be flexibly arranged according to the conditions of the prior strip foundation, so that the method can effectively improve the bearing capacity and reduce differential settlement, and then achieve good reinforcement effect.
Description
Technical field
The present invention relates to a kind of method with the shoulder pole girder reinforcing strip foundation.
Background technology
Building the situation that the requirement of superstructure bearing capacity or distortion can't be satisfied in the basis often occurs owing to increase the influence of situations such as layer transformation, contiguous preloading, contiguous excavation of foundation pit, take the piling mode that bearing capacity is provided.Common former strip foundation stake is arranged closeer, piling in the strip foundation scope, because the stress stack produces efficiency of pile groups, pile side friction is not in full use, and influences consolidation effect.So, can consider outside strip foundation, to carry out piling, but how make strip foundation external reinforcement stake performance carrying effect, be the problem that present reinforcing technique faces.
Summary of the invention
The technical problem that the present invention solves provides a kind of method of shoulder pole girder reinforcing strip foundation, this method adopts shoulder pole girder as strenthening member, reinforcing stake and original stake are played a role jointly, increase bearing capacity of foundation soil and the sedimentation that reduces to reinforce the basis, back, to guarantee the normal safe handling of building.
For this reason, provided by the invention with in the method for shoulder pole girder reinforcing strip foundation with shoulder pole girder across and be cast in the position that needs reinforcement in the strip foundation, the down either side of shoulder pole girder is provided with reinforces stake with the carrying shoulder pole girder, utilize shoulder pole girder to share original strip foundation load, the part upper load is passed to by shoulder pole girder reinforced stake.
Because the Load Transfer with strip foundation in the reinforcement means provided by the invention arrives the reinforcing stake, share load by reinforcing stake, its load power transmission is clear and definite, the safety reliability height, thus can play reinforcement effect to strip foundation.And the shoulder pole girder that adopts in the inventive method can be provided with flexibly according to former strip foundation situation, can effectively improve bearing capacity, reduces relative settlement, to obtain good consolidation effect.
Description of drawings
Fig. 1 shoulder pole girder is reinforced plan view.
Fig. 2 shoulder pole girder is reinforced elevation.
In each accompanying drawing: 1, strip foundation, 2, shoulder pole girder, 3, the coarse sand bed course, 4, the original base stake, 5, reinforce stake.
The specific embodiment
As shown in Figure 1 and Figure 2, comprise in the method with the shoulder pole girder reinforcing strip foundation provided by the invention and utilize shoulder pole girder 2 to share original strip foundation 1 load, the part upper load is passed to by shoulder pole girder 2 reinforced stake 5, in former strip foundation 1 can also being wrapped in, wherein shoulder pole girder 2 is hinged with reinforcing stake 5 bind modes, shoulder pole girder 2 is when providing the member of counter-force, and being subjected to force mode during shoulder pole girder 2 constructions is semi girder, and to be subjected to force mode be simply supported beam to shoulder pole girder 2 when building came into operation.
In order to strengthen consolidation effect and to ensure its reliability, can apply prestressing force to reinforcing stake 5 in the shoulder pole girder 2.
In order to reinforce operation more accurately, can paste the resistance stress section in the stake 5 reinforcing, with cable resistance stress section signal is led to frequency recorder, the detection data by the product frequency recorder instruct the reinforcing pile driving construction.
In order to strengthen consolidation effect, can also reinforce preceding by shoulder pole girder 2 with former concrete foundation cutter hair, brushing twice concrete interface binding material behind the concrete chisel hair, the first road thin pulp, the volume of its concrete binding material in cement paste is 2% of cement paste weight, the thick slurry in second road, the volume of its concrete binding material in cement paste is 6% of cement paste weight.In addition, shoulder pole girder 2 times is reinforced stake 5 and should be selected from former foundation pile 4 position far away, because the stake big more performance that helps reinforcing pile capacity more in footpath as far as possible.
Introduce some treatment of details in the work progress below in detail, shoulder pole girder 2 and strip foundation 1 vertical setting in the accompanying drawing are reinforced stake 5 and are symmetricly set on strip foundation 1 both sides, and strip foundation 1 is wrapped in the inside by the back casting foundation, and both unify.Reinforce the stake top coarse sand bed course 3 is set, coarse sand bed course 3 thickness are 10cm～20cm, avoid reinforcing stake stress by the hinged one side of reinforcing stake 5 and shoulder pole girder 2 and concentrate, and help reinforcing stake on the other hand and participate in carrying.Shoulder pole girder 2 edges are 500mm from reinforcing stake 3 centre distances, and assurance shoulder pole girder 2 anti-impacts are cut performance.Reinforce in the shoulder pole girder 2 that original foundation pile 4 centre distances are not less than 2 times of original base stake stakes footpaths in stake 5 centers and the strip foundation 1, avoid a stress stack weakening consolidation effect.
Claims (10)
1, a kind of method with the shoulder pole girder reinforcing strip foundation, it is characterized in that: with shoulder pole girder across and be cast in the position that needs reinforcement in the strip foundation, the down either side of shoulder pole girder is provided with reinforces stake with the carrying shoulder pole girder, utilize shoulder pole girder to share original strip foundation load, the part upper load is passed to by shoulder pole girder reinforced stake.
2, the method with the shoulder pole girder reinforcing strip foundation according to claim 1, it is characterized in that: the position that needs reinforcement in the former strip foundation is wrapped in the shoulder pole girder.
3, the method with the shoulder pole girder reinforcing strip foundation according to claim 1 and 2 is characterized in that: shoulder pole girder is hinged with reinforcing the stake bind mode.
4, the method with the shoulder pole girder reinforcing strip foundation according to claim 2 is characterized in that: when the shoulder pole girder conduct provided the member of counter-force, being subjected to force mode during the shoulder pole girder construction was semi girder.
5, the method with the shoulder pole girder reinforcing strip foundation according to claim 2 is characterized in that: to be subjected to force mode be simply supported beam to shoulder pole girder when building came into operation.
6, the method with the shoulder pole girder reinforcing strip foundation according to claim 1 and 2 is characterized in that: apply prestressing force to reinforcing stake in the shoulder pole girder.
7, the method with the shoulder pole girder reinforcing strip foundation according to claim 1 and 2 is characterized in that: reinforce stake and go up and paste the resistance stress section, with cable resistance stress section signal is led to frequency recorder, the detection data by the product frequency recorder instruct the reinforcing pile driving construction.
8, the method with the shoulder pole girder reinforcing strip foundation according to claim 1 and 2, it is characterized in that: before shoulder pole girder is reinforced former concrete foundation is cut a hole hair, brushing twice concrete interface binding material behind the concrete chisel hair, the first road thin pulp, the volume of its concrete binding material in cement paste is 2% of cement paste weight, the thick slurry in second road, the volume of its concrete binding material in cement paste is 6% of cement paste weight.
9, the method with the shoulder pole girder reinforcing strip foundation according to claim 7, it is characterized in that: before shoulder pole girder is reinforced former concrete foundation is cut a hole hair, brushing twice concrete interface binding material behind the concrete chisel hair, the first road thin pulp, its concrete binding material volume is 2%, the thick slurry in second road, its concrete binding material volume is 6%.
10, the method with the shoulder pole girder reinforcing strip foundation according to claim 1 and 2 is characterized in that: shoulder pole girder is reinforced stake down and should be selected from former foundation pile position far away as far as possible.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100955187A CN101476339A (en) | 2009-01-15 | 2009-01-15 | Method for reinforcing strip foundation by shoulder pole girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100955187A CN101476339A (en) | 2009-01-15 | 2009-01-15 | Method for reinforcing strip foundation by shoulder pole girder |
Publications (1)
| Publication Number | Publication Date |
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| CN101476339A true CN101476339A (en) | 2009-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100955187A Pending CN101476339A (en) | 2009-01-15 | 2009-01-15 | Method for reinforcing strip foundation by shoulder pole girder |
Country Status (1)
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| CN (1) | CN101476339A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101994324A (en) * | 2010-12-22 | 2011-03-30 | 建研地基基础工程有限责任公司 | Reinforced foundation and method for improving bending and shearing capacity of existing building rigid foundation |
| CN102535502A (en) * | 2011-12-29 | 2012-07-04 | 中国一冶集团有限公司 | Method for preventing settling and cracking of terrace with large area by utilizing combined prestressing concrete beams at region with soft soil layer |
| CN103912131A (en) * | 2013-01-08 | 2014-07-09 | 田新明 | Repair method for patand breakage |
| CN105256833A (en) * | 2014-03-21 | 2016-01-20 | 刘献刚 | Building structure of underground space |
| CN105256826A (en) * | 2014-01-24 | 2016-01-20 | 刘献刚 | Building structure of underground space |
| CN105926532A (en) * | 2016-05-25 | 2016-09-07 | 中交第航务工程局有限公司 | Technology for constructing shoulder pole beam reversely-suspended bottom on abutment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL7600786A (en) * | 1976-01-27 | 1977-07-29 | Nederhorst Grondtechniek B V | Building foundation reinforcing system - inserts bar in drilled hole and fills intervening space with hardening glue |
| CN101067303A (en) * | 2007-02-13 | 2007-11-07 | 铁道第二勘察设计院 | Active pile foundation underpinning structure and constructing method thereof |
| CN101215840A (en) * | 2007-12-26 | 2008-07-09 | 南京工业大学 | Airplane-type foundation reinforcement given-force construction method |
-
2009
- 2009-01-15 CN CNA2009100955187A patent/CN101476339A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL7600786A (en) * | 1976-01-27 | 1977-07-29 | Nederhorst Grondtechniek B V | Building foundation reinforcing system - inserts bar in drilled hole and fills intervening space with hardening glue |
| CN101067303A (en) * | 2007-02-13 | 2007-11-07 | 铁道第二勘察设计院 | Active pile foundation underpinning structure and constructing method thereof |
| CN101215840A (en) * | 2007-12-26 | 2008-07-09 | 南京工业大学 | Airplane-type foundation reinforcement given-force construction method |
Non-Patent Citations (1)
| Title |
|---|
| 朱奎 等: "《刚-柔性桩复合地基》", 31 July 2007, 化学工业出版社 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101994324A (en) * | 2010-12-22 | 2011-03-30 | 建研地基基础工程有限责任公司 | Reinforced foundation and method for improving bending and shearing capacity of existing building rigid foundation |
| CN102535502A (en) * | 2011-12-29 | 2012-07-04 | 中国一冶集团有限公司 | Method for preventing settling and cracking of terrace with large area by utilizing combined prestressing concrete beams at region with soft soil layer |
| CN102535502B (en) * | 2011-12-29 | 2014-05-07 | 中国一冶集团有限公司 | Method for preventing settling and cracking of terrace with large area by utilizing combined prestressing concrete beams at region with soft soil layer |
| CN103912131A (en) * | 2013-01-08 | 2014-07-09 | 田新明 | Repair method for patand breakage |
| CN105256826A (en) * | 2014-01-24 | 2016-01-20 | 刘献刚 | Building structure of underground space |
| CN105256833A (en) * | 2014-03-21 | 2016-01-20 | 刘献刚 | Building structure of underground space |
| CN105256834A (en) * | 2014-03-21 | 2016-01-20 | 刘献刚 | Building structure of underground space |
| CN105256835A (en) * | 2014-03-21 | 2016-01-20 | 刘献刚 | Building structure of underground space |
| CN105926532A (en) * | 2016-05-25 | 2016-09-07 | 中交第航务工程局有限公司 | Technology for constructing shoulder pole beam reversely-suspended bottom on abutment |
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Application publication date: 20090708 |