CN1519437A - Pile foundation of composite long and short piles on construction base and design method - Google Patents
Pile foundation of composite long and short piles on construction base and design method Download PDFInfo
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- CN1519437A CN1519437A CNA031150810A CN03115081A CN1519437A CN 1519437 A CN1519437 A CN 1519437A CN A031150810 A CNA031150810 A CN A031150810A CN 03115081 A CN03115081 A CN 03115081A CN 1519437 A CN1519437 A CN 1519437A
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Abstract
A pile foundation features that the long piles and short piles are combined together to for the pile foundation. Its design method features that the 40-70% of load is borne by long piles and 30-60% of load is borne by short piles.
Description
The present invention relates to the civil construction field, relate in particular to building foundation length compound pile pile foundation and method for designing thereof.
As everyone knows, China builds that nineteen ninety-fives all issues, at present " technical code for building pile foundation " 3.2.3.5 bar regulation of still using of the whole nation: same element of construction should avoid adopting dissimilar stakes.Dissimilar herein size, length and the classification differences that are meant stake, single at soil layer, have only under the situation of a bearing stratum, the product of this standard is economical.But the geology in China coastal cities is ever-changing, the underground bearing stratum that different depth more than two is arranged of a building building often, and each post load difference of building, as adopt same section, with the similar stake of length, can cause the bearing capacity waste of stake, improve construction costs.The length pile foundation of (ZL94102594.2) being introduced in the patent at " three-dimension high-strength composite foundation " ground that is used for multistory building is handled in addition, can not be used for Pile Foundations Design, reason is that the stub of this invention is that cement stirs the cement mixing pile that forms with soil, long stake is plain concrete pipeline sinking pile, cement mixing pile compressive strength is low, compressive strain is big, only is applicable to that therefore the not high building of the number of plies uses.
The objective of the invention is can make full use of the bearing capacity of different bearing stratums, and pile body stiffness to be big by building foundation length compound pile pile foundation and method for designing thereof are provided, the resistance to compression distortion is little, has both reduced construction costs, has gone back the reduction of erection time.
The present invention realizes by following technical measures, building foundation length compound pile pile foundation and method for designing thereof are the same with prior art, all have the steel bar concrete cushion cap and load of buildings is shared every pile by calculating, it is characterized in that under the steel bar concrete cushion cap the length compound pile of making by the steel bar concrete material for the bearing stratum that stands on two different depths, the total bearing capacity of stub that stands on bearing stratum accounts for the 30-60% of total load, and the total bearing capacity of long stake that stands on down bearing stratum accounts for 70-40%.
The present invention compared with prior art, have following conspicuous advantage: it can give full play to the bearing capacity of different bearing stratums, reduce the engineering quantity of stake, reduce construction costs, reduction of erection time, be particularly suitable for little high level and the highrise building that there be plural bearing stratum in China coastal cities.
Description of drawings
Fig. 1 is the sectional drawing of an exemplary embodiments of the present invention.
An exemplary embodiments of the present invention such as Fig. 1, in the soil layer of forming by (2), (3), (6), (7), (8), (9), squeeze into all growing in the extremely following bearing stratum (8) of stake (5) respectively, squeeze into again in the supreme bearing stratum of all stubs (4) (6), pour into a mould each cushion cap (1) then respectively.
Claims (1)
1. building foundation length compound pile pile foundation of the present invention and method for designing thereof are the same with prior art, all have the steel concrete cushion cap and load of buildings is shared every pile by calculating, it is characterized in that under the steel bar concrete cushion cap the length compound pile of making by Reinforced Concrete Materials for the bearing stratum that stands on two different depths, the total bearing capacity of stub that stands on bearing stratum accounts for the 30-60% of total load, and the total bearing capacity of long stake that stands on down bearing stratum accounts for 70-40%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031150810A CN1519437A (en) | 2003-01-22 | 2003-01-22 | Pile foundation of composite long and short piles on construction base and design method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031150810A CN1519437A (en) | 2003-01-22 | 2003-01-22 | Pile foundation of composite long and short piles on construction base and design method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1519437A true CN1519437A (en) | 2004-08-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA031150810A Pending CN1519437A (en) | 2003-01-22 | 2003-01-22 | Pile foundation of composite long and short piles on construction base and design method |
Country Status (1)
| Country | Link |
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| CN (1) | CN1519437A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103352468A (en) * | 2013-04-08 | 2013-10-16 | 温州天然工程勘察有限公司 | Method for laying rigid long piles and rigid short piles in deep foundation pit support engineering in thick-sludge soft soil area |
| CN111827268A (en) * | 2020-06-15 | 2020-10-27 | 湖北文理学院 | Long and short pile composite foundation design method and device |
-
2003
- 2003-01-22 CN CNA031150810A patent/CN1519437A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103352468A (en) * | 2013-04-08 | 2013-10-16 | 温州天然工程勘察有限公司 | Method for laying rigid long piles and rigid short piles in deep foundation pit support engineering in thick-sludge soft soil area |
| CN111827268A (en) * | 2020-06-15 | 2020-10-27 | 湖北文理学院 | Long and short pile composite foundation design method and device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |