CN201106178Y - Dowel enhancement type CFG pile composite foundation - Google Patents
Dowel enhancement type CFG pile composite foundation Download PDFInfo
- Publication number
- CN201106178Y CN201106178Y CNU2007201739887U CN200720173988U CN201106178Y CN 201106178 Y CN201106178 Y CN 201106178Y CN U2007201739887 U CNU2007201739887 U CN U2007201739887U CN 200720173988 U CN200720173988 U CN 200720173988U CN 201106178 Y CN201106178 Y CN 201106178Y
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- composite foundation
- cfg
- cfg pile
- pile
- pile composite
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Abstract
The utility model pertains to the composite foundation technique and relates to the improvement on conventional rigid CFG pile composite foundation. The improvement comprises a CFG pile composite foundation that consists of a sandstone bedding cushion 1 and CFG piles 2, and is characterized in that a steel reinforcement cage 3 is inserted on the top of each CFG pile. The utility model can effectively overcome the shortcomings of the existing rigid CFG pile of low strength and poor compactness of the pile body and insufficient bearing capacity of a single CFG pile, and greatly improve the overall performances of horizontal shearing resistance, horizontal bending resistance and vertical compression resistance, particularly the horizontal shearing resistance of the composite foundation under horizontal loading conditions, such as an earthquake, etc.
Description
Technical field
The utility model belongs to composite foundation technology, relates to the improvement to conventional rigidity CFG pile composite foundation.
Background technology
In recent years, domestic a large amount of high level, super highrise buildings that rigid pile composite foundation are applied to 20～30 layers, Bearing Capacity of Composite Foundation can reach 300kpa～500kpa.Rigidity CFG stake is because the limitation of factors such as pile shaft material and construction technology, cause that pile strength is low, compactness is poor, the bearing capacity of single pile deficiency, make the integral level shearing resistance of CFG pile composite foundation, horizontal bending resistance and vertical compression scarce capacity, thus influence and limited the CFG pile composite foundation and in building such as large-scale high level, superelevation layer, used widely.
Summary of the invention
The purpose of this utility model is: propose the strong joint bar enhancement mode CFG pile composite foundation of a kind of integral level shearing resistance, horizontal bending resistance and vertical compression ability, to enlarge the range of application of existing conventional CFG pile composite foundation technology in the middle of buildings such as high-rise and superelevation layer.
The technical solution of the utility model is: a kind of joint bar enhancement mode CFG pile composite foundation, comprise the CFG pile composite foundation of forming by sandstone mattress layer [1] and CFG stake [2], it is characterized in that, the reinforcing cage [3] that insertion is arranged in the inside of every CFG stake, the top mark of reinforcing cage [3] is high identical with the top mark height of CFG stake, and the length of reinforcing cage [3] is 0.2～0.4 times of CFG pile length.
The utility model has the advantages that: can solve effectively that existing rigidity CFG stake pile strength is low, compactness is poor, the bearing capacity of single pile defect of insufficient.Simultaneously, the CFG stake strengthens by the joint bar of stake top subrange, the integral level shearing resistance of CFG pile composite foundation, horizontal bending resistance and vertical compression ability are improved greatly, and can strengthen the horizontal shear resistance of composite foundation under horizontal loads such as earthquake more.Adopt the utility model technology, the composite foundation supporting capacity can reach 900Kpa.
Description of drawings
Fig. 1 is a structural principle schematic diagram of the present utility model.
The specific embodiment
Below the utility model is described in further details.Referring to Fig. 1, a kind of joint bar enhancement mode CFG pile composite foundation, comprise the CFG pile composite foundation of forming by sandstone mattress layer [1] and CFG stake [2], it is characterized in that, the reinforcing cage [3] that insertion is arranged in the inside of every CFG stake, the top mark of reinforcing cage [3] is high identical with the top mark height of CFG stake, and the length of reinforcing cage [3] is 0.2～0.4 times of CFG pile length.
Embodiment 1, certain CFG pile composite foundation, and the design supporting capacity is 700Kpa, the length of reinforcing cage 3 is 0.2 times of CFG pile length.
Embodiment 2, certain CFG pile composite foundation, and the design supporting capacity is 800Kpa, the length of reinforcing cage 3 is 0.3 times of CFG pile length.
Embodiment 3, certain CFG pile composite foundation, and the design supporting capacity is 900Kpa, the length of reinforcing cage 3 is 0.4 times of CFG pile length.
Embodiment 4, certain plain concrete pile composite foundation, and the design supporting capacity is 826Kpa, the length of reinforcing cage 3 is 0.35 times of plain concrete pile length.
Claims (1)
1, a kind of joint bar enhancement mode CFG pile composite foundation, comprise the CFG pile composite foundation of forming by sandstone mattress layer [1] and CFG stake [2], it is characterized in that, the reinforcing cage [3] that insertion is arranged in the inside of every CFG stake, the top mark of reinforcing cage [3] is high identical with the top mark height of CFG stake, and the length of reinforcing cage [3] is 0.2～0.4 times of CFG pile length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201739887U CN201106178Y (en) | 2007-11-05 | 2007-11-05 | Dowel enhancement type CFG pile composite foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201739887U CN201106178Y (en) | 2007-11-05 | 2007-11-05 | Dowel enhancement type CFG pile composite foundation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201106178Y true CN201106178Y (en) | 2008-08-27 |
Family
ID=39957976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201739887U Expired - Lifetime CN201106178Y (en) | 2007-11-05 | 2007-11-05 | Dowel enhancement type CFG pile composite foundation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201106178Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619218A (en) * | 2012-04-19 | 2012-08-01 | 中铁第四勘察设计院集团有限公司 | Back-insert steel reinforcement cage cement-flyash-gravel pile and pile-forming method thereof |
-
2007
- 2007-11-05 CN CNU2007201739887U patent/CN201106178Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619218A (en) * | 2012-04-19 | 2012-08-01 | 中铁第四勘察设计院集团有限公司 | Back-insert steel reinforcement cage cement-flyash-gravel pile and pile-forming method thereof |
| CN102619218B (en) * | 2012-04-19 | 2015-09-30 | 中铁第四勘察设计院集团有限公司 | Rear slotting reinforcing cage CFG and piling method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100098 No. 56, Haidian District, Beijing, Zhichun Road Patentee after: AVIC Geotechnical Engineering Institute Co., Ltd. Address before: 100098 No. 56, Haidian District, Beijing, Zhichun Road Patentee before: Zhonghang Prospecting and Designing Inst. |
|
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Beijing Geotechnical Engineering Association Assignor: AVIC Geotechnical Engineering Institute Co., Ltd. Contract record no.: 2015990000875 Denomination of utility model: Dowel enhancement type CFG pile composite foundation Granted publication date: 20080827 License type: Exclusive License Record date: 20151021 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080827 |