CN104005427B - A kind of linkage of the distortion of the tunable for deep water combination foundation - Google Patents
A kind of linkage of the distortion of the tunable for deep water combination foundation Download PDFInfo
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- CN104005427B CN104005427B CN201410256373.5A CN201410256373A CN104005427B CN 104005427 B CN104005427 B CN 104005427B CN 201410256373 A CN201410256373 A CN 201410256373A CN 104005427 B CN104005427 B CN 104005427B
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Abstract
The present invention is the linkage of a kind of tunable for deep water combination foundation distortion, this linkage is provided with steel pipe sleeve (3) in the preformed hole at open caisson base plate (2) center, rigidity backing plate (7) is provided with in the bottom of steel pipe sleeve (3), shear connector (8) is provided with in the inside of steel pipe sleeve (3), the bottom of rigidity backing plate (7) arranges flexible cushion (6), and the bottom of flexible cushion (6) arranges rigid limit plate (5); Pile foundation (1) is through rigid limit plate (5), flexible flexible cushion (6), rigidity backing plate (7) and shear connector (8), and envelope pile concrete (9) is positioned at the top of open caisson base plate (2) and pile foundation (1).The present invention can not only solve the cogging problem of open caisson (caisson) basis and pile foundation, the relative position of open caisson (caisson) basis and pile foundation can be changed according to upper load situation simultaneously, make basis and soil body compatible deformation, change soil body support stiffness, give full play to the bearing capacity of the foundation bottom soil body, reduce key dimension, reduce cost.
Description
Technical field
The present invention relates to civil engineering bridge construction field, relate to bridge foundation technology, be specifically related to the linkage of a kind of tunable for deep water combination foundation distortion.
Background technology
At present, the bridge construction career development of China is swift and violent, achieves remarkable achievement, has in succession built up a collection of world-class high-level Very Large Bridge, as Soviet Union's Changjiang River bridge, Construction of Hangzhou Bay Cross-sea Bridge, port Zhuhai and Macao bridge spanning the sea etc.The bridge construction level of China marches at the forefront of the world, but along with bridge construction is to more Long span, more deepwater field development, there is new technical barrier: the foundation pattern that tradition is single, as monomer open caisson, monomer caisson, pile foundation etc. are difficult to the capability and deformation requirement meeting Long span deep-water bridge, and traditional infrastructure pattern is carried out reasonably optimizing and combination, play respective feature and strong point, can designing requirement be reached.But how to process the cogging problem of traditional open caisson, laying foundation and pile foundation, become the bottleneck of combination foundation further genralrlization and development, so step up research piecing devices to seem particularly important, to promoting that further developing of Bridges in Our Country construction has important practical significance.
Along with the increase of span of bridge, construction condition is to the development of more complicated waters, and in order to bear upper load, reduce inhomogeneous deformation, the size of bridge foundation is also increasing, and reach up to ten thousand square metres easily, investment cost also gets more and more.The effect of the foundation bottom soil body is scarcely considered in current design, causes huge waste to Practical Project construction.How to give full play to the bearing capacity of the soil body, make basis and soil body compatible deformation, upper load is born in acting in conjunction, and for the investment cost reducing bridge construction, built environment conservation-minded society has great importance.
Summary of the invention
Technical problem: the object of the invention is to overcome the deficiencies in the prior art, provides the linkage that a kind of tunable for deep water combination foundation is out of shape.The present invention can not only solve the cogging problem of open caisson (caisson) basis and pile foundation, the relative position of open caisson (caisson) basis and pile foundation can be changed according to upper load situation simultaneously, make basis and soil body compatible deformation, change soil body support stiffness, give full play to the bearing capacity of the foundation bottom soil body, reduce key dimension, reduce cost.
Technical scheme: the cost that the present invention is directed to China's Long span deep-water bridge foundation existence is too high, the shortcoming of soil bearing capacity can not be given full play to, invent a kind of linkage of the distortion of the tunable for deep water combination foundation, may be used for the joint area that open caisson (caisson) adds a combination foundation, open caisson bottom soil body can be made to give full play to bearing capacity simultaneously, reduce key dimension, reach the object of investment reduction.
The linkage of the distortion of the tunable for deep water combination foundation of the present invention comprises open caisson base plate, steel pipe sleeve, rigid limit plate, flexible flexible cushion, rigidity backing plate, shear connector, envelope pile concrete; In the preformed hole at open caisson base plate center, be provided with steel pipe sleeve, be provided with rigidity backing plate in the bottom of steel pipe sleeve, be provided with shear connector in the inside of steel pipe sleeve, the bottom of rigidity backing plate arranges flexible cushion, and the bottom of flexible cushion arranges rigid limit plate; Pile foundation is through rigid limit plate, flexible flexible cushion, rigidity backing plate and shear connector, and envelope pile concrete is positioned at the top of open caisson base plate and pile foundation.
Rivet is provided with in the periphery of steel pipe sleeve.
Described rigid limit plate employing thickness is that the steel plate of 50mm makes, and its planar peripheral size is greater than pile foundation 500 ~ 1000mm; When pile foundation is steel pipe pile, rigid limit plate and steel pipe pile are directly welded to connect; When pile foundation is bored pile, the main muscle of rigid limit plate and bored pile is welded to connect.
Described flexible flexible cushion, adopts steel spring plate to make; Cushion thickness is 300mm ~ 500mm, and for making Stress transmit even, its planar peripheral size is greater than rigid limit plate 500 ~ 1000mm.
Described rigidity backing plate, adopts thickness to be that the steel plate of 50mm makes, is linked to be an entirety, is increase rigidity, is increasing welded reinforcement or steel plate supports with steel pipe sleeve weld with steel pipe sleeve weld.
Described steel pipe sleeve employing thickness is that the steel plate of 30mm makes, of rivet secure anchorage on open caisson base plate.
Described shear connector should closely be filled in the space that steel pipe sleeve and rigidity backing plate form, and adopts rubber, plastic material to make shear connector.
Operating principle: by arranging flexible cushion, makes, between pile foundation and open caisson (caisson), relative displacement occurs, and makes soil body compatible deformation participate in bearing upper load.
The course of work: when basic upper load transmits to bottom, when load is little, bear primarily of open caisson (caisson) and pile foundation, when load continues to increase, then make, between open caisson (caisson) and pile foundation, relative displacement occurs, extruding open caisson bottom soil body, makes inter-pile soil participate in bearing upper load, plays the bearing capacity of inter-pile soil.
Beneficial effect: compared with prior art, the utility model has the following advantages:
1. consider basis and soil body acting in conjunction, by arranging flexible cushion device, making pile foundation according to upper load situation, relative compatible deformation can occur, giving full play to the supporting capacity of the soil body, thus reduce key dimension, reduce construction investment cost.
2. excessive by adopting rigid limit plate resistance to stop pile foundation distortion, meet the deformation requirements of pile foundation, solve the connection difficult problem on pile foundation and open caisson (caisson) basis.
3. the present utility model technique is simple, easy to operate, economic and practical, is adapted at deepwater foundation construction field fabrication, easy to utilize.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention, Qi Zhongyou: pile foundation 1, open caisson base plate 2, steel pipe sleeve 3, rivet 4, rigid limit plate 5, flexible cushion 6, rigidity backing plate 7, shear connector 8, envelope pile concrete 9.
Detailed description of the invention
The linkage that the present invention is out of shape for the tunable of deep water combination foundation is made up of rigid limit plate, flexible flexible cushion, base plate preformed hole, steel pipe sleeve and shear connector.Pile foundation penetrates in open caisson (caisson) by open caisson (caisson) base plate preformed hole, shear connector is filled in preformed hole, separate with steel pipe sleeve between shear connector and open caisson (caisson) base plate, pile crown and open caisson (caisson) base plate bottom pile body arrange rigid limit device, between rigid limit device and shear connector, scalable flexible cushion is set.
As preferably, described rigid limit plate available thickness is that the steel plate of 50mm makes, its planar peripheral size is greater than pile foundation 500 ~ 1000mm, if when pile foundation is steel pipe pile, rigid limit plate directly can be welded to connect with steel pipe pile, if pile foundation is bored pile, rigid limit plate can be welded to connect with the main muscle of bored pile.
As preferably, described flexible flexible cushion, can adopt steel spring plate to make.Cushion thickness is 300mm ~ 500mm, and for making Stress transmit even, its planar peripheral size is greater than rigid limit plate 500 ~ 1000mm.
As preferably, described rigidity backing plate, available thickness is that the steel plate of 50mm makes, and being linked to be an entirety with steel pipe sleeve weld, is increase rigidity, can increase welded reinforcement or steel plate supports with steel pipe sleeve weld.
As preferably, described steel pipe sleeve available thickness is that the steel plate of 30mm makes, of rivet secure anchorage on open caisson (caisson) base plate.
As preferably, described shear connector should closely be filled in the space that steel pipe sleeve and rigidity backing plate form, and rubber, plastic or other material can be adopted to make shear connector.
Operating procedure:
1. preformed hole indwelling: before open caisson base plate 2 is built by steel pipe sleeve 3 and rivet 4 good according to Fig. 1 position of sound production, then build open caisson base plate 2, steel pipe sleeve 3 just defines preformed hole.Steel pipe sleeve 3 can choose the steel plate making that thickness is 30mm.
2. rigid limit plate 5: choosing thickness is that the Q235 steel plate of 50mm is as rigid limit plate 5.Its Outside Dimensions is greater than pile foundation 1 size 500 ~ 1000mm.If when pile foundation is steel pipe pile, rigid limit plate directly can be welded to connect with steel pipe pile, if pile foundation is bored pile, rigid limit plate can be welded to connect with the main muscle of bored pile.After rigid limit plate 5 welds with pile foundation, pile foundation passes open caisson (caisson) base plate from preformed hole.
3. flexible cushion 6: choose steel spring plate as scalable flexible cushion.Namely pile foundation carries out arranging flexible cushion 6 below base plate through after open caisson (caisson) base plate.When upper load is larger, steel spring plate can produce certain compressive strain because pressure is comparatively large, makes, between open caisson (caisson)-pile foundation-inter-pile soil, compatible deformation occurs, gives full play to the bearing capacity of inter-pile soil.Cushion thickness is 300mm ~ 500mm, and for making Stress transmit even, its planar peripheral size is greater than rigid limit plate 500 ~ 1000mm.
4. rigidity backing plate 7: select thickness to be that the steel plate of 50mm makes rigidity backing plate 7, being linked to be an entirety with steel pipe sleeve weld, is increase rigidity, can increase welded reinforcement with steel pipe sleeve weld or steel plate supports.
5. shear connector 8: shear connector should, as far as possible together with pile foundation, steel pipe sleeve close contact, select rubber to make shear connector, can between jack pile basis and steel pipe sleeve.
6. to construct shear connector top rigidity backing plate and flexible expandable bed course, its method and 3,4 identical.
7. envelope pile concrete 9: finally carry out the pouring construction sealing pile concrete 9, envelope pile concrete should choose the concrete of a grade higher than underplate concrete.
The present embodiment is that the linkage of tunable distortion between open caisson and pile foundation makes.
The first step: pile foundation is poured into open caisson base plate top from open caisson base plate preformed hole;
Second step: install pile foundation pile body rigid limit plate under open caisson base plate;
3rd step: lay flexible cushion between open caisson base plate and pile body rigid limit plate;
4th step: install the steel pipe sleeve between pile body and open caisson base plate, and fix with rivet;
5th step: install rigidity backing plate, and install shear connector between pile body and steel pipe sleeve;
6th step: install open caisson plate upper surface rigidity backing plate;
7th step: install pile foundation pile body rigid limit plate on open caisson base plate, and lay flexible cushion between rigid limit plate and open caisson plate upper surface rigidity backing plate;
8th step: build envelope pile concrete.
Claims (5)
1., for the linkage that the tunable of deep water combination foundation is out of shape, it is characterized in that this linkage comprises open caisson base plate (2), steel pipe sleeve (3), rigid limit plate (5), flexible flexible cushion (6), rigidity backing plate (7), shear connector (8), envelope pile concrete (9); Steel pipe sleeve (3) is provided with in the preformed hole at open caisson base plate (2) center, rigidity backing plate (7) is provided with in the bottom of steel pipe sleeve (3), shear connector (8) is provided with in the inside of steel pipe sleeve (3), the bottom of rigidity backing plate (7) arranges flexible cushion (6), and the bottom of flexible cushion (6) arranges rigid limit plate (5); Pile foundation (1) is through rigid limit plate (5), flexible flexible cushion (6), rigidity backing plate (7) and shear connector (8), and envelope pile concrete (9) is positioned at the top of open caisson base plate (2) and pile foundation (1);
Rivet (4) is provided with in the periphery of steel pipe sleeve (3);
Described rigid limit plate (5) employing thickness is that the steel plate of 50mm makes, and its planar peripheral size is greater than pile foundation (1) 500 ~ 1000mm; When pile foundation is steel pipe pile, rigid limit plate and steel pipe pile are directly welded to connect; When pile foundation is bored pile, the main muscle of rigid limit plate and bored pile is welded to connect.
2. the linkage of the distortion of the tunable for deep water combination foundation according to claim 1, is characterized in that described flexible flexible cushion (6), adopts steel spring plate to make; Cushion thickness is 300mm ~ 500mm, and for making Stress transmit even, its planar peripheral size is greater than rigid limit plate 500 ~ 1000mm.
3. the linkage of the distortion of the tunable for deep water combination foundation according to claim 1, it is characterized in that described rigidity backing plate (7), employing thickness is that the steel plate of 50mm makes, an entirety is linked to be with steel pipe sleeve weld, for increasing rigidity, increasing welded reinforcement with steel pipe sleeve weld or steel plate supports.
4. the linkage of the distortion of the tunable for deep water combination foundation according to claim 1, is characterized in that described steel pipe sleeve employing thickness is the steel plate making of 30mm, with rivet secure anchorage on open caisson base plate.
5. the linkage of the tunable for deep water combination foundation according to claim 1 distortion, is characterized in that described shear connector should closely be filled in the space that steel pipe sleeve and rigidity backing plate form, employing rubber, plastic material making shear connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410256373.5A CN104005427B (en) | 2014-06-10 | 2014-06-10 | A kind of linkage of the distortion of the tunable for deep water combination foundation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410256373.5A CN104005427B (en) | 2014-06-10 | 2014-06-10 | A kind of linkage of the distortion of the tunable for deep water combination foundation |
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| Publication Number | Publication Date |
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| CN104005427A CN104005427A (en) | 2014-08-27 |
| CN104005427B true CN104005427B (en) | 2016-01-13 |
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| CN201410256373.5A Active CN104005427B (en) | 2014-06-10 | 2014-06-10 | A kind of linkage of the distortion of the tunable for deep water combination foundation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108331023B (en) * | 2018-04-17 | 2023-06-09 | 中交公路规划设计院有限公司 | Method for installing spring cushion layer of shear key of immersed tube tunnel joint |
| CN115012394B (en) * | 2022-06-15 | 2023-07-25 | 福州市规划设计研究院集团有限公司 | Prestressed steel plate concrete underground diaphragm wall and design and construction method thereof |
Citations (4)
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|---|---|---|---|---|
| JP2005226326A (en) * | 2004-02-13 | 2005-08-25 | Ohbayashi Corp | Reinforcing structure for existing pier foundation and reinforcing method for the existing pier foundation |
| CN101962958A (en) * | 2009-07-22 | 2011-02-02 | 中交公路规划设计院有限公司 | Bridge composite foundation consisting of open caisson and pile and construction method |
| CN102322069A (en) * | 2011-07-04 | 2012-01-18 | 浙江省交通规划设计研究院 | Underwater combination base of open caisson and steel pipe piles and construction method |
| CN103741706A (en) * | 2014-01-02 | 2014-04-23 | 上海大学 | Deepwater open type combined foundation pier and construction method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6951437B2 (en) * | 2004-02-20 | 2005-10-04 | Hall David B | Foundation support system and method |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005226326A (en) * | 2004-02-13 | 2005-08-25 | Ohbayashi Corp | Reinforcing structure for existing pier foundation and reinforcing method for the existing pier foundation |
| CN101962958A (en) * | 2009-07-22 | 2011-02-02 | 中交公路规划设计院有限公司 | Bridge composite foundation consisting of open caisson and pile and construction method |
| CN102322069A (en) * | 2011-07-04 | 2012-01-18 | 浙江省交通规划设计研究院 | Underwater combination base of open caisson and steel pipe piles and construction method |
| CN103741706A (en) * | 2014-01-02 | 2014-04-23 | 上海大学 | Deepwater open type combined foundation pier and construction method thereof |
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Address after: 210093 Nanjing University Science Park, 22 Hankou Road, Gulou District, Nanjing City, Jiangsu Province Patentee after: Southeast University Address before: 210033 Xigang office, Qixia District, Nanjing, Jiangsu, No. 8, Qi Min Dong Road, Xingshan City, Patentee before: Southeast University |
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