CN203238620U - Assembled type external constraint bending and shearing damage prevention preformed pile with stiffening ribs - Google Patents
Assembled type external constraint bending and shearing damage prevention preformed pile with stiffening ribs Download PDFInfo
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- CN203238620U CN203238620U CN 201320242902 CN201320242902U CN203238620U CN 203238620 U CN203238620 U CN 203238620U CN 201320242902 CN201320242902 CN 201320242902 CN 201320242902 U CN201320242902 U CN 201320242902U CN 203238620 U CN203238620 U CN 203238620U
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Abstract
The utility model discloses an assembled type external constraint bending and shearing damage prevention preformed pile with stiffening ribs. The preformed pile comprises a preformed pile body. An external constraint member wraps the pile head end of the preformed pile body and is formed by two steel members. The outer surface of the external constraint member is welded with a plurality of stiffening ribs, the directions of the stiffening ribs are consistent with the axis direction of the preformed pile, and the stiffening ribs are arranged in an annular mode relative to the axis of the preformed pile. The preformed pile has the advantages that pile lateral resistance is improved due to the fact that the stiffening ribs are welded on the surface of the external constraint member of the pile head; bending and shearing damage prevention performance of the preformed pile is improved; bending prevention performance and shearing prevention performance are enhanced only in portions with the maximum bending force and shearing force, and therefore construction cost is saved; the assembled type external constraint device is adopted in the pile head, damage on the pile head can be avoided, and construction is easy; manufacturing and installation are convenient, members of various components can be machined in a factory and then transported to construction sites, and therefore assembly can be finished quickly.
Description
Technical field
The utility model relates to a kind of preformed pile with the anti-bending shear failure of the outer constraint of stiffening rib assembling.
Background technology
At present, pile foundation is used widely, wherein, but the advantages such as pile quality is good, speed of application is fast, construction costs is low because preformed pile has, construction environmental protection, pile body batch production production easy to detect, the needs that meet the contemporary science development are used increasingly extensive in pile foundation engineering.
Anti-seismic Pile Foundation always belongs to the difficult problem in the engineering, and stake is when bearing level to load in soil, and its duty belongs to beam on elastic foundation or Plastic Foundation beam, makes foundation soil be in elasticity or elastic-plastic behavior is decided on geological process.The non-linear stress-strain of soil concerns clearly during macroseism, and the rigidity of soil becomes with strong and weak with the vibrations course.In addition, also have series of problems to make situation further complicated, such as being connected of pile crown and cushion cap, by method commonly used at present, embedding cushion cap 50～100mm, pile body master muscle stretches into the cushion cap certain-length.Stake does not both reach build-in with being connected of cushion cap, more can not think hinged, its build-in degree can not safely determine that this affects less when pile foundation is born vertical load, but when being subjected to the horizontal loadings such as geological process in pile, but affect quite large on the distribution of bending and shearing.Liquefaction in the seismic process, shake fall into, pile body top makes again the stressed parsing increase difficulty of pile body because waving to separate with soil etc.Pile crown section is often because moment of flexure, shearing is excessive and failure.Therefore stake to be subjected to the curved performance of being cut be key point, be badly in need of a kind of preformed pile form that can anti-bending shear failure.
Summary of the invention
For above-mentioned prior art, the utility model provides a kind of preformed pile with the anti-bending shear failure of the outer constraint of stiffening rib assembling.
The utility model is achieved through the following technical solutions:
A kind of preformed pile with the anti-bending shear failure of the outer constraint of stiffening rib assembling comprises preformed pile, and the pile crown end of preformed pile is wrapped with outer confining part, and described outer confining part is made of two steel members; Outer confining part external surface is welded with some stiffening ribs, and the trend of stiffening rib is consistent with the axis direction of preformed pile, and stiffening rib is with respect to the axis annular spread of preformed pile.
Further, described two steel members are spliced into one by connecting bolt, and outer confining part is round tube shape or rectangular tube shape, is provided with pad between the splice ends of two steel members.
Further, be provided with at least one group of fixture block-draw-in groove fit structure between described preformed pile and the outer confining part, every group of fixture block-draw-in groove fit structure comprises plural fixture block-draw-in groove fit structure, and each fixture block of every group of fixture block-draw-in groove fit structure-draw-in groove fit structure is uniform with respect to the axis annular of preformed pile; Each fixture block-draw-in groove fit structure includes fixture block, the draw-in groove that matches, and wherein, fixture block is installed in the external surface of preformed pile, and the inner surface of outer confining part offers the draw-in groove corresponding to fixture block.
Further, be provided with at least two groups fixture block-draw-in groove fit structure between described preformed pile and the outer confining part, each organizes fixture block-draw-in groove fit structure along the axis direction distribution of preformed pile.
Preformed pile with the anti-bending shear failure of the outer constraint of stiffening rib assembling of the present utility model, guaranteeing to have in the situation of counter-bending cutting performance preferably, consider easy for installation, can arbitrarily adjust according to weak soil thickness length, the thickness of outer constraint steel member, and the length of stiffening rib, thickness etc., outer constraint steel member adopts assembling.
Preformed pile with the anti-bending shear failure of the outer constraint of stiffening rib assembling of the present utility model has following advantage:
One, strengthened the mode of stake with (rock) native interphase interaction by confining part surface soldered stiffening rib outside pile crown, greatly improved the pile side resistance effect, at the friction pile of the branched point of pile crown position variable cross-section, changed the force-mechanism of stake, thereby improved the horizontal resistance of stake.
Two, add outside the assembling at the pile crown place of preformed pile and retrain, improved the counter-bending shear failure ability of preformed pile, when improving bearing capacity of pile foundation, have the good characteristics of shock resistance.
Three, by outside pile crown increases assembling, retraining, by strengthening the counter-bending shear-stable ability of stake at the maximum position of moment of flexure shearing, thereby save construction costs.
Four, in the piling process on construction work basis, the phenomenon of smashing pile crown and not getting to design elevation because of a variety of causes happens occasionally, and adopts the outer restraint device of assembling at pile crown, can avoid the destruction of pile crown, is easy to construct.
Five, fabrication and installation are convenient, can then be transported to the construction plant at factory process each several part member, finish rapidly assembly unit.
Description of drawings
Fig. 1 is the structural representation of the preformed pile among the embodiment 1;
Fig. 2 is the top view 1 of Fig. 1;
Fig. 3 is the structural representation of fixture block on preformed pile;
Fig. 4 is the top view of the preformed pile among the embodiment 2.
Wherein: 1, outer confining part; 2, preformed pile; 3, fixture block; 4, connecting bolt; 5, pad; 6, stiffening rib.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further described.
1 one kinds of preformed piles with the anti-bending shear failure of the outer constraint of stiffening rib assembling of embodiment comprise preformed pile 2, and the pile crown end of preformed pile 2 is wrapped with outer confining part 1, and as shown in Figure 1 and Figure 2, outer confining part 1 is made of two steel members; Outer confining part 1 external surface is welded with some stiffening ribs 6, and the trend of stiffening rib 6 is consistent with the axis direction of preformed pile 2, and stiffening rib 6 is with respect to the axis annular spread of preformed pile 2.
Described two steel members are spliced into one by connecting bolt 4, and outer confining part 1 is round tube shape, is provided with pad 5 between the splice ends of two steel members.
Be provided with two groups of fixture blocks-draw-in groove fit structure between described preformed pile 2 and the outer confining part 1, two groups of fixture block-draw-in groove fit structures distribute along the axis direction of preformed pile 2; Every group of fixture block-draw-in groove fit structure comprises four fixture block-draw-in groove fit structure, and four fixture block-draw-in groove fit structures are uniform with respect to the axis annular of preformed pile 2; Each fixture block-draw-in groove fit structure includes fixture block 3, the draw-in groove that matches, and wherein, fixture block 3 is installed in the external surface of preformed pile 2, and as shown in Figure 3, and the inner surface of outer confining part 1 offers the draw-in groove corresponding to fixture block 3.
Preparation method is as follows: fluid concrete preformed pile 2; After concrete to be cast solidified, the template of dismantling was spliced into one with two steel members by connecting bolt 4, and concrete precast pile 2 is connected with outer confining part 1 by fixture block-draw-in groove fit structure, prevents that both from relative slippage occuring.
2 one kinds of preformed piles with the anti-bending shear failure of the outer constraint of stiffening rib assembling of embodiment, as shown in Figure 4, difference from Example 1 is: outer confining part 1 rectangular tube shape; Every group of fixture block-draw-in groove fit structure comprises two fixture block-draw-in groove fit structure.All the other are identical with embodiment 1.
Claims (4)
1. preformed pile with the anti-bending shear failure of the outer constraint of stiffening rib assembling, it is characterized in that: comprise preformed pile, the pile crown end of preformed pile is wrapped with outer confining part, and described outer confining part is made of two steel members; Outer confining part external surface is welded with some stiffening ribs, and the trend of stiffening rib is consistent with the axis direction of preformed pile, and stiffening rib is with respect to the axis annular spread of preformed pile.
2. according to claim 1 a kind of with the outer preformed pile that retrains anti-bending shear failure of stiffening rib assembling, it is characterized in that: described two steel members are spliced into one by connecting bolt, outer confining part is round tube shape or rectangular tube shape, is provided with pad between the splice ends of two steel members.
3. according to claim 1 a kind of with the outer preformed pile that retrains anti-bending shear failure of stiffening rib assembling, it is characterized in that: be provided with at least one group of fixture block-draw-in groove fit structure between described preformed pile and the outer confining part, every group of fixture block-draw-in groove fit structure comprises plural fixture block-draw-in groove fit structure, and each fixture block of every group of fixture block-draw-in groove fit structure-draw-in groove fit structure is uniform with respect to the axis annular of preformed pile; Each fixture block-draw-in groove fit structure includes fixture block, the draw-in groove that matches, and wherein, fixture block is installed in the external surface of preformed pile, and the inner surface of outer confining part offers the draw-in groove corresponding to fixture block.
4. according to claim 3 a kind of with the outer preformed pile that retrains anti-bending shear failure of stiffening rib assembling, it is characterized in that: be provided with at least two groups fixture block-draw-in groove fit structure between described preformed pile and the outer confining part, each organizes fixture block-draw-in groove fit structure along the axis direction distribution of preformed pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320242902 CN203238620U (en) | 2013-05-07 | 2013-05-07 | Assembled type external constraint bending and shearing damage prevention preformed pile with stiffening ribs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320242902 CN203238620U (en) | 2013-05-07 | 2013-05-07 | Assembled type external constraint bending and shearing damage prevention preformed pile with stiffening ribs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203238620U true CN203238620U (en) | 2013-10-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320242902 Expired - Fee Related CN203238620U (en) | 2013-05-07 | 2013-05-07 | Assembled type external constraint bending and shearing damage prevention preformed pile with stiffening ribs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203238620U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103233462A (en) * | 2013-05-07 | 2013-08-07 | 山东同圆设计集团有限公司 | Assembling external restraining precast pile with stiffening ribs and capable of preventing bending and shear damage |
-
2013
- 2013-05-07 CN CN 201320242902 patent/CN203238620U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103233462A (en) * | 2013-05-07 | 2013-08-07 | 山东同圆设计集团有限公司 | Assembling external restraining precast pile with stiffening ribs and capable of preventing bending and shear damage |
| CN103233462B (en) * | 2013-05-07 | 2016-05-25 | 山东同圆设计集团有限公司 | A kind of prefabricated pile with the anti-bending failure by shear of the outer constraint of ribbed stiffener assembled |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131016 Termination date: 20170507 |