CN2793165Y - Pile end displacement adjuster - Google Patents
Pile end displacement adjuster Download PDFInfo
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- CN2793165Y CN2793165Y CN 200520071955 CN200520071955U CN2793165Y CN 2793165 Y CN2793165 Y CN 2793165Y CN 200520071955 CN200520071955 CN 200520071955 CN 200520071955 U CN200520071955 U CN 200520071955U CN 2793165 Y CN2793165 Y CN 2793165Y
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Abstract
The utility model discloses a pile end displacement adjuster used for adjusting pile end displacement, which is composed of a cylinder body, a top plate and a telescopic element, wherein the top plate and the telescopic element are arranged in the cylinder body, and the telescopic element is positioned in a cavity enclosed by the cylinder body and the top plate and can adopt displacement adjusting steel plates standing between the inner end surface of the cylinder body and the top plate. The displacement adjusting steel plate is cylindrical and is formed from cylindrical steel plates which have unequal diameters, the cylindrical steel plates are sheathed together according to an order from small diameters to big diameters, and the utility model has the function of eliminating influence generated by the sedimentation difference of a compound pile foundation. After the cylindrical steel plates are adopted by the telescopic element, the force bearing and the deformation of the utility model are in a non-linear relationship. After a displacement adjusting quantity given in advance is completed, load which can be born by the utility model trends to be infinite. The utility model has the advantages that the displacement size of the pile top of a building pile foundation is adjusted conveniently, only ordinary building materials are used for the whole device, structure is simple, etc.
Description
Technical field
The utility model relates to a kind of device of free adjustment stake top displacement, refers in particular to pile tip displacement regulating device.
Background technology
Along with the development gradually of highrise building, pile-raft foundation progressively becomes its main base form at present, has obtained using widely.
(1) pile-raft foundation is divided into two kinds of conventional pile foundation and composite pile foundations again in concrete the application.
Conventional pile foundation mainly is (GB50007-2002) (JGJ94-94) to advise with " technical code for building pile foundation " according to " basic design specification of the foundation ", bearing capacity of single pile is got characteristic value or design load (be respectively ultimate bearing capacity of single pile 1/2 and 1/1.65) during designing and calculating, do not consider the load-carrying properties of inter-pile soil, the load of superstructure is born by stake fully.The pile foundation type is mainly end bearing pile and friction pile according to mechanical characteristic.The end bearing pile sedimentation is very little, and the friction pile sedimentation is bigger, but can't artificially control.Whole like this stake raft system finally is dish-shaped sedimentation, and the raft plate bears very big shearing and moment of flexure, and thickness is bigger, and cost is also very high.Have the part scholar raft plate to be carried out the leveling design at present, but effect is not ideal, also has certain distance from the engineering practicality by an adjustment stake footpath, pilespacing, the long method of stake.
Composite pile foundation is the pile foundation form of a kind of sparse layout (pilespacing is generally greater than 6 times of stakes warps).Its bearing capacity of single pile is generally greater than characteristic value (or design load), to take into full account the bearing capacity of foundation soil.The use of composite pile foundation can be saved the cost input greatly, uses in a large number in the Shanghai and Nanjing area at present, has obtained good effect.But composite pile foundation has its certain limitation: participate in bearing upper load in order to make foundation soil, pile foundation must have bigger sedimentation, holds friction pile so composite pile foundation can only use friction pile or end to make with less end; Because it is not high that friction pile or end hold the general bearing capacity of friction pile, so composite pile foundation generally also can only be used for multilayer or small sized multiple story building.
(2) for some geological conditions (as granite residual soil), random distribution, not of uniform size, the incomplete granite boulder of weathering often appear in the soil.Building foundation on this kind geological conditions mainly adopts two kinds of methods of natural ground and composite foundation at present.Though the natural ground less expensive, but building settlement is bigger, and certain risk is arranged.The composite foundation cost is higher, and the big and difficult control of construction quality has greater risk to the granite residual soil disturbance.Above in addition two kinds of methods all need the strict control building number of plies, and the former is mainly used in multistory building, and the latter is mainly used in multilayer and small sized multiple story building.
(3) in the urban renewal process, old building has stayed a large amount of intact old pile foundations after removing in foundation soil.The existence of these old stakes has increased the difficulty at this new pile foundation construction in location, deals with not only trouble, also wants the manpower and materials of consume significant.Handle the bad hidden danger that causes building basement to leak that also has easily in addition.This contradiction later on can be more and more outstanding, how rationally to utilize old become more and more urgent.
Summary of the invention
The utility model is provided for eliminating the pile tip displacement regulating device of composite pile foundation settlement difference.
The utility model adopts following technical scheme to solve its technical problem, that is:
A kind of pile tip displacement regulating device that is used to regulate pile end displacement is made up of cylinder body, top board and telescopic element, and top board and telescopic element are located in the cylinder body, and telescopic element is positioned at the cavity that is surrounded by cylinder body and top board.Wherein, telescopic element can adopt and stand on displacement adjusting steel plate between cylinder body inner face and the top board, and this displacement is regulated steel plate and is tubular, and can be made up of the steel plate that is tubular that diameter does not wait, and the tubular steel plate is set-located in proper order by ascending diameter.
Compared with prior art, the utlity model has following advantage:
The utility model can bear certain load in the stressed starting stage, along with the lasting increase of load, begins surrender and produces distortion, remedies the difference of composite pile foundation sedimentation with this, eliminates the influence that the composite pile foundation settlement difference is produced.Especially after telescopic element has adopted the tubular steel plate, make the stressed and distortion of the utility model be non-linear relation, if continue to increase load, the utility model is after finishing displacement regulated quantity given in advance, and it is infinitely great that the load that can bear is tending towards.The utility model can conveniently be regulated the size of building pile foundation stake top displacement, and only practical common building material is simple in structure in the whole device.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment 1.
Fig. 2 is the structural representation of the utility model embodiment 2.
Fig. 3 is the structural representation of the utility model embodiment 3.
Fig. 4 is the structural representation of the utility model embodiment 4.
Among the figure: 1. raft plate; 2. grade beam; 3. stake;
The specific embodiment
Below in conjunction with accompanying drawing the utility model is made and to further specify.
A kind of pile tip displacement regulating device that is used to regulate pile end displacement, by cylinder body 4, top board 5 and telescopic element are formed, top board 5 and telescopic element are located in the cylinder body 4, telescopic element is positioned at the cavity that is surrounded by cylinder body 4 and top board 5, wherein, telescopic element can adopt and stand on displacement adjusting steel plate between cylinder body 4 inner faces and the top board 5, this displacement is regulated steel plate and is tubular, and can form by the steel plate that is tubular 6 that diameter does not wait, tubular steel plate 6 is set-located in proper order by ascending diameter, the tubular steel plate is selected common HPB235 steel for use, and the difference in height of steel plate and spacing should be respectively 1cm and 2cm, and the number of turns is preferably about 6 circles.The height of inner ring steel plate and the thickness of steel plate can be regulated (big highly more, the displacement that can regulate is big more, and steel plate is thick more, and the rigidity of whole device is also big more) according to concrete needs.Concrete control method is: at first calculate required adjusting displacement and stake support stiffness, according to the relation of " rigidity=bearing capacity/displacement ", calculate required bearing capacity again, determine the thickness of steel plate again.The thickness of normal conditions lower steel plate is got 3～5mm.
A kind of pile tip displacement regulating device that is used to regulate pile end displacement, form by cylinder body 4, top board 5 and telescopic element, top board 5 and telescopic element are located in the cylinder body 4, telescopic element is positioned at the cavity that is surrounded by cylinder body 4 and top board 5, wherein, telescopic element adopts dish spring 10, is provided with center steel column 9 at the center of dish spring 10.Above-mentioned dish spring can directly be selected for use in dish spring specification table according to pile bearing rigidity and the displacement regulated quantity calculated.
A kind of pile tip displacement regulating device that is used to regulate pile end displacement, by cylinder body 4, top board 5 and telescopic element are formed, top board 5 and telescopic element are located in the cylinder body 4, telescopic element is positioned at the cavity that is surrounded by cylinder body 4 and top board 5, wherein, telescopic element adopts rubber pad 8, and can adopt more than 2 (as: 3,5 or 7 rubber pads) the rubber pad that is superimposed with each other 8, between adjacent rubber pad, be provided with steel plate 7, above-mentioned rubber pad can adopt JGD-D type isolation rubber pad (as adopting the rubber pad of other specification, must satisfy " seismic design provision in building code " respective specified in (GB50011-2001)).Its rigidity and thickness can be with requiring adjustment.Be specially: according to the pile bearing rigidity of calculating gained, select the rubber pad of respective model for use,, calculate the height of rubber pad then according to support stiffness and required adjusting displacement.
A kind of pile tip displacement regulating device that is used to regulate pile end displacement, form by cylinder body 4, top board 5 and telescopic element, top board 5 and telescopic element are located in the cylinder body 4, telescopic element is positioned at the cavity that is surrounded by cylinder body 4 and top board 5, wherein, telescopic element is made up of the concrete ball 11 that is full of in being enclosed in the cavity by cylinder body 4 and top board 5, its diameter, concrete strength can be adjusted as required, are specially: deduct the concrete sphere volume is the total displacement amount of adjusting again divided by the chamber interface area relation according to cavity volume.At first, calculate the volume of required concrete ball, and then calculate concrete ball size according to calculating required displacement regulated quantity.Concrete intensity then mainly obtains according to pile bearing rigidity and the displacement regulated quantity of calculating gained jointly.
Claims (8)
1, a kind of pile tip displacement regulating device that is used to regulate pile end displacement, it is characterized in that forming by cylinder body (4), top board (5) and telescopic element, top board (5) and telescopic element are located in the cylinder body (4), and telescopic element is positioned at the cavity that is surrounded by cylinder body (4) and top board (5).
2, pile tip displacement regulating device according to claim 1 is characterized in that telescopic element adopts to stand between cylinder body (4) inner face and the top board (5) displacement and regulate steel plate.
3, pile tip displacement regulating device according to claim 2 is characterized in that displacement adjusting steel plate is tubular.
4, pile tip displacement regulating device according to claim 3 is characterized in that telescopic element is made up of the steel plate that is tubular (6) that diameter does not wait, and tubular steel plate (6) is set-located in proper order by ascending diameter.
5, pile tip displacement regulating device according to claim 1 is characterized in that telescopic element adopts rubber pad (8).
6, pile tip displacement regulating device according to claim 5 is characterized in that adopting the rubber pad that is superimposed with each other (8) more than 2, is provided with steel plate (7) between adjacent rubber pad.
7, pile tip displacement regulating device according to claim 1 is characterized in that telescopic element adopts dish spring (10), is provided with center steel column (9) at the center of dish spring (10).
8, pile tip displacement regulating device according to claim 1 is characterized in that telescopic element is made up of the concrete ball (11) that is full of in being enclosed in the cavity by cylinder body (4) and top board (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520071955 CN2793165Y (en) | 2005-05-30 | 2005-05-30 | Pile end displacement adjuster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520071955 CN2793165Y (en) | 2005-05-30 | 2005-05-30 | Pile end displacement adjuster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2793165Y true CN2793165Y (en) | 2006-07-05 |
Family
ID=36820313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520071955 Expired - Lifetime CN2793165Y (en) | 2005-05-30 | 2005-05-30 | Pile end displacement adjuster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2793165Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100363564C (en) * | 2005-05-30 | 2008-01-23 | 南京工业大学 | Pile tip displacement regulating device |
| CN104018520A (en) * | 2014-06-20 | 2014-09-03 | 中国建筑设计研究院 | Adaptive deformation control device and method of pile foundation and foundation slab and control method thereof |
| CN110485454A (en) * | 2019-08-27 | 2019-11-22 | 南京工业大学 | A kind of semi-active type displacement governor |
| CN114279854A (en) * | 2021-12-22 | 2022-04-05 | 健研检测集团有限公司 | Testing method of stiffness adjusting device of pile raft |
| CN114279854B (en) * | 2021-12-22 | 2024-05-24 | 健研检测集团有限公司 | Testing method of rigidity adjusting device of pile raft |
-
2005
- 2005-05-30 CN CN 200520071955 patent/CN2793165Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100363564C (en) * | 2005-05-30 | 2008-01-23 | 南京工业大学 | Pile tip displacement regulating device |
| CN104018520A (en) * | 2014-06-20 | 2014-09-03 | 中国建筑设计研究院 | Adaptive deformation control device and method of pile foundation and foundation slab and control method thereof |
| CN104018520B (en) * | 2014-06-20 | 2016-05-18 | 中国建筑设计院有限公司 | A kind of pile foundation and sole plate adaptive deformation control device and control method thereof |
| CN110485454A (en) * | 2019-08-27 | 2019-11-22 | 南京工业大学 | A kind of semi-active type displacement governor |
| CN110485454B (en) * | 2019-08-27 | 2023-10-24 | 南京工业大学 | Semi-active displacement regulator |
| CN114279854A (en) * | 2021-12-22 | 2022-04-05 | 健研检测集团有限公司 | Testing method of stiffness adjusting device of pile raft |
| CN114279854B (en) * | 2021-12-22 | 2024-05-24 | 健研检测集团有限公司 | Testing method of rigidity adjusting device of pile raft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20080123 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |