CN2575156Y - Construction grille - Google Patents
Construction grille Download PDFInfo
- Publication number
- CN2575156Y CN2575156Y CN 02257086 CN02257086U CN2575156Y CN 2575156 Y CN2575156 Y CN 2575156Y CN 02257086 CN02257086 CN 02257086 CN 02257086 U CN02257086 U CN 02257086U CN 2575156 Y CN2575156 Y CN 2575156Y
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- section
- pile
- cross
- stake
- shape
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- Expired - Fee Related
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Abstract
The utility model discloses a profiled cross section reinforced concrete vertical bearing pile. A precast bearing pile is composed of a driven section, a pile head section, and a transition section between the two sections, wherein, the cross section of the driven section forms an I shape or a T shape, the cross section of the pile head section forms a rectangular shape or a circular shape, and the transition surface on the outer side of a pile body of the transition section forms a tapered plane or an oblique arc surface. The utility model can effectively increase the vertical bearing capacity of the pile without increasing the cross-sectional area and the length of the pile, and the difficulty of piling can not be increased. The construction of the utility model is convenient.
Description
Technical field
The utility model relates to a kind of vertical bearing peg of steel concrete of profiled-cross-section.Belong to the building structure in industry and civilian construction, bridge, the port works field.
Background technology
The vertical bearing peg of steel concrete that adopts in the engineering is divided by its cross sectional shape at present, and solid side's stake and circle stake, hollow square pile, pipe stake are arranged.Pipe pile material consumption is few, the bearing capacity height, but need special plant produced.Improve the bearing capacity of stake, just increase the diameter or the length of side of stake, perhaps increase the length of stake, these two kinds of methods need increase the material usage of stake on the one hand, and the power of driving piles on the other hand also will strengthen, and can cause making the increase of stake and piling expense.Cross when thick or long when stake in some cases, piling is difficulty also.
Can not increase the section area and the length of stake, the cross sectional shape of stake is once improved, improve the vertical bearing capacity of stake, do not increase the difficulty of piling simultaneously again?
Summary of the invention
The purpose of this utility model is to provide a kind of vertical bearing peg of steel concrete of profiled-cross-section, and this bearing peg can improve the vertical bearing capacity of stake effectively under the situation of section area that does not increase stake and length.
For achieving the above object, the utility model is realized by following technical proposals: the vertical bearing peg of prefabricated steel concrete, constitute by the changeover portion between the section of burying, pile crown section and two sections, it is characterized in that, the cross section of the section of burying of stake is an I shape, or T-shape, and the cross section of pile crown section is a rectangle, or circular, the transition face in the pile body outside of changeover portion is tapered plane or oblique cambered surface.
Above-mentioned pile crown segment length is 1m～5m, and transition section length is 0.5m～2m.
Superiority of the present utility model is: the section area and the length that need not increase stake just can improve the vertical bearing capacity of stake effectively, do not increase the difficulty of piling simultaneously again, and it is convenient to implement.
Description of drawings
Below in conjunction with accompanying drawing the utility model is illustrated.
Fig. 1 is the structural representation of the present utility model of i shaped cross section.
Fig. 2 is the section of the burying cross sectional representation of Fig. 1.
Fig. 3 is the structural representation of the present utility model in T-shape cross section.
Fig. 4 is the section of the burying cross sectional representation of Fig. 3.
1 is the pile crown section among the figure, and 2 is changeover portion, and 3 are the section of burying.
The specific embodiment
An embodiment is as follows for the utility model: the section of burying cross section as depicted in figs. 1 and 2 is the vertical bearing peg of steel concrete of I shape, two alar part and the belly rectangle that be long 0.55m, wide 0.183m of stake in the cross section, the pile crown segment length 1.5m of stake, transition segment length 1m, segment length 15m buries.This section of burying section area and the length of side are solid side's stake identical of 0.55m.
The vertical bearing capacity of stake is made up of two parts, and the one, the bearing capacity of pile tip relevant with the section area of stake, another is the stake side-friction force relevant with the stake lateral area.The stake side-friction force of friction pile will be much larger than bearing capacity of pile tip.For the stake of different cross section shape, when section area was identical, then bearing capacity of pile tip was roughly the same.Above-mentioned i shaped cross section stake of the present utility model, the long-pending solid side stake than same cross-sectional area of its active flank is big by 1/3, then the side-friction force of i shaped cross section stake big by 1/3 than solid side.As seen this utility model is very effective to the vertical bearing capacity that improves the steel concrete friction pile.
Pile driving resistance in the piling process also is dimerous by end resistance and stake side skin friction, when adopting vibration and impact mode to drive piles, the stake side skin friction will be much smaller than end resistance, therefore it is identical to work as section area, though it is it is influential to the stake lateral area to change cross sectional shape, little to total pile driving resistance influence.
In addition, i shaped cross section and the stake of T-shape cross section will be much larger than square stakes along the bending resistance of belly long side direction, and this situation that has that for the handling of stake with in using bending resistance requires is very favorable.Prefabricated and the prestressing force processing of these two kinds of profiled-cross-section stakes is all more convenient, just can be prefabricated on the pedestal of precast square pile.
Claims (2)
1. the vertical bearing peg of the steel concrete of a profiled-cross-section, prefabricated pile body is made of the changeover portion between the section of burying, pile crown section and two sections, it is characterized in that, the cross section of the section of burying of stake is an I shape, or T-shape, the cross section of pile crown section is a rectangle, or circular, and the transition face in the pile body outside of changeover portion is tapered plane or oblique cambered surface.
2. according to the vertical bearing peg of the steel concrete of the described profiled-cross-section of claim 1, it is characterized in that the pile crown segment length is 1m～5m, transition section length is 0.5m～2m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02257086 CN2575156Y (en) | 2002-09-24 | 2002-09-24 | Construction grille |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02257086 CN2575156Y (en) | 2002-09-24 | 2002-09-24 | Construction grille |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2575156Y true CN2575156Y (en) | 2003-09-24 |
Family
ID=33725154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02257086 Expired - Fee Related CN2575156Y (en) | 2002-09-24 | 2002-09-24 | Construction grille |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2575156Y (en) |
-
2002
- 2002-09-24 CN CN 02257086 patent/CN2575156Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |