CN101270580A - Building pile structure for soft ground base - Google Patents
Building pile structure for soft ground base Download PDFInfo
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- CN101270580A CN101270580A CNA2007100384247A CN200710038424A CN101270580A CN 101270580 A CN101270580 A CN 101270580A CN A2007100384247 A CNA2007100384247 A CN A2007100384247A CN 200710038424 A CN200710038424 A CN 200710038424A CN 101270580 A CN101270580 A CN 101270580A
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Abstract
The invention relates to a building pile foundation structure of a soft soil foundation; a building is stressed by the combined actions of horizontal load and vertical load, etc., besides, the amount of the pile foundations is controlled by the horizontal load; the foundation adopts a rigid pile foundation treatment scheme and is formed by uniformly distributed pile foundation supporting cushion cap( building) bottom plates; the invention is characterized in that the lengths of the pile foundations are different and the pile foundations include long piles and short piles; the lengths of the short pile reach a proper length to lead the horizontal load to be federatively loaded by the short piles and the long piles; besides, the horizontal dislocation at the top of the pile is controlled in a regulated range; the vertical load is loaded by the long piles; the short piles do not load the vertical load or consider properly to load the vertical load action of the short piles after strict calculation and analysis. When the building pile foundation structure of a soft soil foundation of the invention is adopted, the lengths of a part of the original pile foundations with same lengths are greatly shorten; the aspects of materials, human labor and project period are all saved greatly; the cost for treating the foundations can be reduced by 5 to 35 percent according to primary calculation; the invention is in particular suitable for soft soil foundation of large scale.
Description
Technical field
The present invention relates to a kind of building pile structure of soft foundation, particularly be subjected to synergy such as horizontal load, vertical load on the ground and be subjected to the building pile structure of horizontal loading control.
Background technology
Buildings such as Hydraulic and Hydro-Power Engineering are subjected to synergy such as horizontal loading, vertical load and horizontal loading often bigger often, the pile foundation scale generally is subjected to the building of horizontal loading control, these buildings often adopt rigidity pile foundation (preformed pile, PC or PHC stake, steel pipe pile, castinplace pile etc.) to handle on soft foundation, pile foundation quantity, the degree of depth, the rigidity of stake, the control requirement that intensity must satisfy horizontal loading, vertical load, bending moment and level and vertical deflection, and the least favorable situation control of pressing wherein designs.When the building horizontal loading is big, then Zhuan quantity is often determined by horizontal loading (displacement) after the stake type is determined, the length of stake is determined by Vertical Load (containing bending moment) that then according to said method She Ji pile length is all the same, structure is safe and reliable, but is not most economical.
Summary of the invention
For addressing the above problem, the present invention guarantees under the safe prerequisite building pile structure of a kind of soft foundation that cost is more economical for being subjected to synergy such as horizontal load, vertical load on the ground and being subjected to the building of horizontal loading control to provide a kind of.
For achieving the above object, the building pile structure of soft foundation of the present invention, its technical scheme is as follows,
The building pile structure of soft foundation of the present invention, building is subjected to synergy such as horizontal loading, vertical load and controlled by horizontal loading, its basis adopts rigid pile ground scheme to handle, support the cushion cap base plate and form by (local or whole) equally distributed pile foundation, it is characterized in that, the length difference of pile foundation is divided into long stake and stub; Stub length reaches appropriate length, makes horizontal loading unite carrying by the length stake, and control stake top horizontal displacement is in prescribed limit; Vertical Load is then by long pile load; Stub then do not bear Vertical Load or after strict computational analysis with due regard to stub bear the Vertical Load effect.
Adopt the building pile structure of soft foundation of the present invention, the pile foundation length of the original equal length of part has been shortened greatly, all saving expense greatly aspect material, artificial and time, make the cost of foundation reduce 5%-35% (relevant), shortened the duration greatly simultaneously with project scale size, horizontal loading size, the soft foundation depth.Especially suitable scale is big, soft foundation dark and the based process of the major works that horizontal loading is bigger.
Description of drawings
Be described further below in conjunction with the building pile structure of the drawings and specific embodiments soft foundation of the present invention.
Fig. 1 is the horizontal plane generalized section of typical structure of the building pile structure of soft foundation of the present invention;
Fig. 2 is the vertical section schematic diagram of typical structure of the building pile structure of soft foundation of the present invention;
The specific embodiment
As shown in Figure 1, the long stake of 1-, 2-stub, 3-cushion cap base plate (or open caisson base plate, box-shaped base plate, factory building base plate etc.), 4-top-out member, 5-soft foundation
The piling strtucture improvements of the building pile structure of soft foundation of the present invention and prior art are that the present invention forms pile foundation with identical the changing into by long stake 1 and stub 2 of (local or whole) equally distributed all pile foundation length of prior art.Wherein stub 2 length reach appropriate length, make horizontal loading unite carrying by the length stake, and control stake top horizontal displacement is in prescribed limit; Vertical Load is then born by long stake 1; 2 of stubs do not bear Vertical Load or after strict computational analysis with due regard to stub 2 bear the Vertical Load effect.
The form of length stake, quantity, length calculate according to force analysis and empirical value.
1. at first require to determine foundation pile pattern and quantity (pressing the build-in stake calculates) according to horizontal loading and horizontal displacement;
2. data or draw the appropriate length (characteristic value) of foundation pile through tentative calculation rule of thumb, this length is a kind of threshold, the influence of anti-horizontal loading (displacement one the is regularly) ability to improving foundation pile when stake is grown up in this numerical value---single pile Its ultimate bearing capacity is very little or do not influence, when stake long during less than this numerical value then the anti-horizontal loading of foundation pile (displacement one regularly) ability can be affected and reduce.
3. by after above-mentioned definite foundation pile radical and the foundation pile length threshold (characteristic value), size according to Vertical Load, the part foundation pile is deepened to suitable length---" long stake ", as basement rock, suitable bearing stratum etc., and by calculating radical, the length of determining long stake and determining suitable stake position.
4. when determining long stake radical, can not consider the effect of long " stub " for threshold (characteristic value) of the stake of determining by horizontal loading.Can certainly be by considering the effect of " stub " after strict the calculating again.
5. the length of " stub " can suitably extend on the basis of " threshold " calculated, as safety stock according to geological condition.
Adopt the structure of length stake can save the cost of ground processing and required duration.
Claims (1)
1. the building pile structure of a soft foundation, building is subjected to synergy such as horizontal loading, vertical load and foundation pile quantity controlled by horizontal loading, the rigid pile foundation processing scheme is adopted on its basis, form by local or whole equally distributed pile foundation support of buildings cushion cap base plates, it is characterized in that, the length difference of pile foundation is divided into long stake and stub; Stub length reaches appropriate length, makes horizontal loading unite carrying by the length stake, and control stake top horizontal displacement is in prescribed limit; Vertical Load is then by long pile load; Stub then do not bear Vertical Load or after strict computational analysis with due regard to stub bear the Vertical Load effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100384247A CN101270580A (en) | 2007-03-23 | 2007-03-23 | Building pile structure for soft ground base |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100384247A CN101270580A (en) | 2007-03-23 | 2007-03-23 | Building pile structure for soft ground base |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101270580A true CN101270580A (en) | 2008-09-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100384247A Pending CN101270580A (en) | 2007-03-23 | 2007-03-23 | Building pile structure for soft ground base |
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| CN (1) | CN101270580A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102051887A (en) * | 2010-12-15 | 2011-05-11 | 潘林有 | Construction method for T-shaped rigid composite pile composite foundation of saturated soft clay regions |
| CN102535500A (en) * | 2012-02-28 | 2012-07-04 | 上海现代建筑设计(集团)有限公司 | Reducing and sinking pile-supported embankment for treating soft soil foundation under large-area stacked load at ground and design method for reducing and sinking pile-supported embankment |
| CN105064387A (en) * | 2015-08-17 | 2015-11-18 | 合肥市市政设计院有限公司 | Method for adjusting anti-thrust rigidity of pile group foundation |
| CN105756075A (en) * | 2016-02-29 | 2016-07-13 | 山东电力工程咨询院有限公司 | Horizontal bearing combined foundation based on piles and underground continuous wall and method |
| CN107829442A (en) * | 2017-11-06 | 2018-03-23 | 中国十七冶集团有限公司 | A kind of Deep Thick Soft Ground Area long-short-pile composite foundation |
-
2007
- 2007-03-23 CN CNA2007100384247A patent/CN101270580A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102051887A (en) * | 2010-12-15 | 2011-05-11 | 潘林有 | Construction method for T-shaped rigid composite pile composite foundation of saturated soft clay regions |
| CN102535500A (en) * | 2012-02-28 | 2012-07-04 | 上海现代建筑设计(集团)有限公司 | Reducing and sinking pile-supported embankment for treating soft soil foundation under large-area stacked load at ground and design method for reducing and sinking pile-supported embankment |
| CN105064387A (en) * | 2015-08-17 | 2015-11-18 | 合肥市市政设计院有限公司 | Method for adjusting anti-thrust rigidity of pile group foundation |
| CN105756075A (en) * | 2016-02-29 | 2016-07-13 | 山东电力工程咨询院有限公司 | Horizontal bearing combined foundation based on piles and underground continuous wall and method |
| CN107829442A (en) * | 2017-11-06 | 2018-03-23 | 中国十七冶集团有限公司 | A kind of Deep Thick Soft Ground Area long-short-pile composite foundation |
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Open date: 20080924 |