CN104005432A - Pile foundation static load testing device and method under vertical and horizontal composite loads - Google Patents
Pile foundation static load testing device and method under vertical and horizontal composite loads Download PDFInfo
- Publication number
- CN104005432A CN104005432A CN201410268875.XA CN201410268875A CN104005432A CN 104005432 A CN104005432 A CN 104005432A CN 201410268875 A CN201410268875 A CN 201410268875A CN 104005432 A CN104005432 A CN 104005432A
- Authority
- CN
- China
- Prior art keywords
- pile foundation
- jack
- vertical
- level
- load
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention belongs to the technical field of pile foundation testing, and relates to a pile foundation static load testing device and method under vertical and horizontal composite loads. The composite loads are divided into horizontal loads and vertical loads, the vertical loads are applied to a pile foundation through a jack which is arranged vertically and a jack counter-force beam, the horizontal loads are applied to the pile foundation through a jack which is arranged horizontally and a jack counter-force beam, a high-elastic rubber support is arranged between the vertical jack and the pile foundation, a displacement measurement piece is arranged on the pile foundation to measure vertical deposition displacement and horizontal displacement of the pile foundation, and the deformation direction of the rubber support is parallel to the direction of the horizontal loads. The pile foundation static load testing method is simple and ingenious in design, the rubber support is arranged between a vertical load applying device and the pile foundation additionally and innovatively, interference of the horizontal loads in the vertical loads is reduced, and load deformation characteristics and bearing capacity of the pile foundation under the action of the composite loads can be tested conveniently.
Description
Technical field
The invention belongs to pile foundation test technical field, relate to a kind of vertically-level is to pile foundation static-load testing device and method under compound load.
Background technology
Bearing capacity is high owing to itself having for pile foundation, good stability, settling amount is little and even, be convenient to the advantages such as mechanized construction, strong adaptability, in addition pile foundation can also be delivered to the larger load in top in the middle of surrounding soil and the deep layer soil body, so pile foundation is widely applied in highrise building and bridge engineering.In order to guarantee the quality of pile foundation and to guarantee construction safety, before construction, generally can carry out test pile, after having constructed, also must spot-check detection, Detection of content comprises the projects such as pile integrity detection and the detection of pile foundation supporting capacity.
Pile foundation supporting capacity detection method has high strain, static loading test etc., and wherein the reliability of static loading test is the highest, generally can in various conditions permit situations, preferentially take.Static loading test comprises vertically measures both direction to bearing capacity measurement and level to bearing capacity.Due in pile foundation during one's term of military service, it can be subject to the impacts such as earthquake or vehicle (train and automobile etc.) braking when being subject to vertically to load and produce horizontal force, and in the prior art, the method of testing of pile foundation supporting capacity and device vertically carry out respectively to carrying force measurement to bearing capacity and level pile foundation, can not reflect the stress of pile foundation reality.Therefore how to provide the method and apparatus of the static loading test under the compound load action of a kind of pile foundation, so that the loaded deformation characteristic of pile foundation is the problem that is worth those skilled in the art's concern with supporting capacity under test compound load action.
Summary of the invention
The object of this invention is to provide a kind of vertically-level is to pile foundation static-load testing device and method under compound load, the inventive method is simple, design ingenious, be convenient to detect loaded deformation characteristic and the supporting capacity of foundation pile under compound load action, and reduce the mutual interference effect between compound load.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows:
Vertically-level, to pile foundation static-load testing device under compound load, comprises jack and jack reaction beam, and vertically jack one end is connected with vertical jack reaction beam, and the other end is connected with pile foundation top by neoprene bearing; Level jack one end is connected with level jack reaction beam, and the other end is connected with pile foundation is vertical, and pile foundation is provided with level and vertical displacement measuring piece, and horizontal movement measuring piece and level jack are positioned at same perpendicular.
Preferably, described device also comprises anchoring pile, anchoring pile is connected with level jack reaction beam is vertical, described vertical jack reaction beam comprises horizontally disposed girder and the secondary beam vertically arranging, girder is connected with secondary beam is vertical, secondary beam is connected with anchoring pile by anchoring piece, vertically vertical connection of girder of jack and vertical jack reaction beam.
Preferably, described neoprene bearing is square, comprises upper plate and lower shoe, and along the direction that is parallel to level jack, the two ends joggle of the two ends of upper plate and lower shoe, is provided with slide plate between upper plate and lower shoe.
Preferably, described slide plate comprises the stainless steel slide plate and parallel slide plate of upper and lower setting, and parallel slide plate is made by modified ultra-high molecular weight polyethylene material.
Preferably, described displacement measurement part is displacement dial gauge.
Use said apparatus to realize vertically-level to the method for pile foundation static loading test under compound load, described compound load be divided into level to vertically to, jack by vertical placement and jack reaction beam apply vertically to load pile foundation, vertically to load, apply between the front jack and pile foundation that neoprene bearing is put in to vertical placement; Jack and jack reaction beam by horizontal positioned apply level to load to pile foundation, pile foundation be provided with displacement measurement part measure pile foundation vertically to sedimentation deformation and level to displacement, obtain compound load static load measurement result.
Vertically applying by vertical jack to load of pile foundation, vertically jack counter-force is provided by girder and the secondary beam of vertical jack reaction beam, and reaction beam is delivered to the other anchoring pile of pile foundation by anchoring piece, and anchoring pile provides uplift resistance.To load, the jack by horizontal positioned applies level, reaction beam is delivered to horizontal reacting force on anchoring pile, because pile foundation produces horizontal movement in level under load action, meeting drives vertically and is offset to load, causes to load charger, to be vertically the unstability of toppling of vertical jack and vertical jack reaction beam.And in the present invention, creatively vertically adding by self deformation between jack and pile foundation greatly offset by the level of to the neoprene bearing of shearing, making vertically to load, can not produce skew, is vertically vertical jack and the vertical jack reaction beam unstability of can not toppling to load charger.
The joggle end face of the upper plate of neoprene bearing and lower plate makes the stainless steel slide plate of neoprene bearing inside cannot to load direction, slide along non-level with parallel slide plate, can only to load and perpendicular to the vertical direction to load, slide along being parallel to level, and the slip of this neoprene bearing inside is embodied by the deformation of neoprene bearing integral body, due to the high resiliency performance of rubber itself, the displacement that this deformation produces is negligible in whole system.Neoprene bearing bear vertically simultaneously to level to load, the deformability of performance high elastic rubber, in the time of can greatly reducing level to load to vertically to the interference of load.
When pile foundation is subject to horizontal force because the buffer action of neoprene bearing, vertical jack and the level being vertically subject to load bringing device being connected with vertical jack are very little to shearing, be about 0.03 times of vertical load, this can not exert an influence for vertical stable the applying to load, in loading procedure, testing level to vertical jack pressure, simultaneously by vertically to horizontal direction displacement dial gauge test pile foundation vertically to sedimentation deformation and level to displacement.
The present invention compared with prior art, tool has the following advantages: method is simple, design ingenious, creatively vertically between load bringing device and pile foundation, adding neoprene bearing, reduce level to load to vertically to the interference of load, be convenient to detect loaded deformation characteristic and the supporting capacity of foundation pile under compound load action.
Accompanying drawing explanation
Fig. 1 be in the specific embodiment vertically-level to pile foundation static-load testing device structural representation under compound load;
Fig. 2 is neoprene bearing top view;
Fig. 3 is the elevation of neoprene bearing;
Fig. 4 is the side view cross section of neoprene bearing.
The specific embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
As Figure 1-4, described vertically-device that level is used to pile foundation static load measuring method under compound load, comprise jack and jack reaction beam, vertically vertical connection of girder 8 of jack 4 one end and vertical jack reaction beam, the other end is connected with pile foundation 1 top by neoprene bearing 11, level jack 5 one end are connected with level jack reaction beam 6, the other end is connected with pile foundation 1 is vertical, pile foundation 1 is provided with horizontal movement dial gauge 2 and vertical displacement dial gauge 3, horizontal movement dial gauge 2 is positioned at same perpendicular with level jack 5, described device also comprises anchoring pile 7, anchoring pile 7 is connected with level jack reaction beam 6 is vertical, described vertical jack reaction beam comprises horizontally disposed girder 8 and the secondary beam 9 vertically arranging, girder 8 is connected with secondary beam 9 is vertical, secondary beam 9 is connected with anchoring pile 7 by anchoring piece 10, described neoprene bearing 11 is square, comprise upper plate 12 and lower shoe 15, edge is perpendicular to level, the direction of vertical jack, the two ends joggle of the two ends of upper plate 12 and lower shoe 15, between upper plate 12 and lower shoe 15, be provided with slide plate, described slide plate comprises, the stainless steel slide plate 13 of lower setting and parallel slide plate 14, parallel slide plate 14 is made by modified ultra-high molecular weight polyethylene material.
Vertically applying by vertical jack 4 to load of pile foundation 1, vertically jack 4 counter-forces are provided by girder 8 and the secondary beam 9 of vertical jack reaction beam, and girder 8 and secondary beam 9 are delivered to the other anchoring pile 7 of pile foundation 1 by anchoring piece 10, and anchoring pile 7 provides uplift resistance.To load, the level jack 5 by horizontal positioned applies level, level jack reaction beam 6 is delivered to horizontal reacting force on anchoring pile 7, because pile foundation 1 produces horizontal movement in level under load action, meeting drives vertically and is offset to load, causes to load charger, to be vertically the unstability of toppling of vertical jack 4 and vertical jack reaction beam.And in the present invention, creatively vertically adding by self deformation between jack 4 and pile foundation 1 greatly offset by the level of to the neoprene bearing 11 of shearing, making vertically to load, can not produce skew, is vertically the unstability of can not toppling of vertical jack 4 and vertical jack reaction beam to load charger.
The upper plate 12 of neoprene bearing makes the stainless steel slide plate 13 of neoprene bearing inside cannot to load direction, slide along non-level with parallel slide plate 14 with the joggle end face of lower plate 15, can only to load and perpendicular to the vertical direction to load, slide along being parallel to level, and the slip of this neoprene bearing 11 inside is embodied by the deformation of neoprene bearing integral body, due to the high resiliency performance of rubber itself, the displacement that this deformation produces is negligible in whole system.Neoprene bearing 11 bear vertically simultaneously to level to load, the deformability of performance high elastic rubber, in the time of can greatly reducing level to load to vertically to the interference of load.
After tested, vertically, to load 20000kN, level is to load 2000kN; Neoprene bearing sliding displacement value ± 80mm, under normal temperature, slippage friction factor is less than 0.03.
The friction factor of rubber is 0.03 left and right, neoprene bearing 11 can reach ± 80mm of horizontal sliding scope, when pile foundation 1 is subject to horizontal force because the buffer action of neoprene bearing 11, vertically jack 4 and the vertical level being subject to load bringing device that is connected with vertical jack 4 are vertical load to shearing 0.03 times, in loading procedure, testing level to vertical jack pressure, simultaneously by vertically to displacement dial gauge 3 and horizontal direction displacement dial gauge 2 test pile foundations 1 vertically to sedimentation deformation and level to displacement, gained is vertically experimental data to sedimentation deformation and level to displacement.
Claims (5)
1. vertically-level, to pile foundation static-load testing device under compound load, comprises jack and jack reaction beam, it is characterized in that, vertically jack one end is connected with vertical jack reaction beam, and the other end is connected with pile foundation top by neoprene bearing; Level jack one end is connected with level jack reaction beam, and the other end is connected with pile foundation is vertical, and pile foundation is provided with level and vertical displacement measuring piece, and horizontal movement measuring piece and level jack are positioned at same perpendicular.
2. device as claimed in claim 1, it is characterized in that, described device also comprises anchoring pile, anchoring pile is connected with level jack reaction beam is vertical, described vertical jack reaction beam comprises horizontally disposed girder and the secondary beam vertically arranging, girder is connected with secondary beam is vertical, and secondary beam is connected with anchoring pile by anchoring piece, vertically vertical connection of girder of jack and vertical jack reaction beam.
3. device as claimed in claim 1, is characterized in that, described neoprene bearing is square, comprises upper plate and lower shoe, and along the direction that is parallel to level jack, the two ends joggle of the two ends of upper plate and lower shoe, is provided with slide plate between upper plate and lower shoe.
4. device as claimed in claim 3, is characterized in that, described slide plate comprises the stainless steel slide plate and parallel slide plate of upper and lower setting, and parallel slide plate is made by modified ultra-high molecular weight polyethylene material.
5. right to use requires the arbitrary described device of 1-4 to realize vertically-level to the method for pile foundation static loading test under compound load, it is characterized in that, described compound load be divided into level to vertically to, jack by vertical placement and jack reaction beam apply vertically to load pile foundation, vertically to load, apply between the front jack and pile foundation that neoprene bearing is put in to vertical placement; Jack and jack reaction beam by horizontal positioned apply level to load to pile foundation, pile foundation be provided with displacement measurement part measure pile foundation vertically to sedimentation deformation and level to displacement, obtain compound load static load measurement result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410268875.XA CN104005432A (en) | 2014-06-17 | 2014-06-17 | Pile foundation static load testing device and method under vertical and horizontal composite loads |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410268875.XA CN104005432A (en) | 2014-06-17 | 2014-06-17 | Pile foundation static load testing device and method under vertical and horizontal composite loads |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104005432A true CN104005432A (en) | 2014-08-27 |
Family
ID=51366321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410268875.XA Pending CN104005432A (en) | 2014-06-17 | 2014-06-17 | Pile foundation static load testing device and method under vertical and horizontal composite loads |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104005432A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104457692A (en) * | 2014-12-23 | 2015-03-25 | 中国地质大学（武汉） | Measuring point device integrating sedimentation and horizontal displacement monitoring |
| CN108252334A (en) * | 2017-12-29 | 2018-07-06 | 中国电力工程顾问集团西北电力设计院有限公司 | A kind of asynchronous carriage and its ground in-situ testing device and test method |
| CN109339121A (en) * | 2018-09-10 | 2019-02-15 | 广州大学 | A kind of small-sized pile foundation dead load detection device and its detection method |
| CN114687388A (en) * | 2022-03-16 | 2022-07-01 | 浙江宏业检测科技有限公司 | Multidirectional loading detection device and detection method for pile foundation bearing capacity |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101042389A (en) * | 2007-04-05 | 2007-09-26 | 同济大学 | Geotechnical engineering physical simulation multifunctional tester with adjustable molded dimension |
| CN201000412Y (en) * | 2007-01-30 | 2008-01-02 | 关喜才 | Building project bearing beam load test device |
| CN101560779A (en) * | 2009-05-13 | 2009-10-21 | 中冶成工建设有限公司 | Foundation pile static test loading counterforce test method and weight boxes used by same |
| CN101718116A (en) * | 2009-11-25 | 2010-06-02 | 上海英谷桥梁科技有限公司 | High damping shock absorption spherical supporting seat |
| CN201942996U (en) * | 2011-01-28 | 2011-08-24 | 洛阳双瑞特种装备有限公司 | One-way slide type vibration isolation support seat for railway bridge |
| JP2012251991A (en) * | 2011-05-10 | 2012-12-20 | Shimadzu Corp | Material testing machine |
| CN203939064U (en) * | 2014-06-17 | 2014-11-12 | 郑州大学 | Vertically-level is to pile foundation static-load testing device under compound load |
-
2014
- 2014-06-17 CN CN201410268875.XA patent/CN104005432A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201000412Y (en) * | 2007-01-30 | 2008-01-02 | 关喜才 | Building project bearing beam load test device |
| CN101042389A (en) * | 2007-04-05 | 2007-09-26 | 同济大学 | Geotechnical engineering physical simulation multifunctional tester with adjustable molded dimension |
| CN101560779A (en) * | 2009-05-13 | 2009-10-21 | 中冶成工建设有限公司 | Foundation pile static test loading counterforce test method and weight boxes used by same |
| CN101718116A (en) * | 2009-11-25 | 2010-06-02 | 上海英谷桥梁科技有限公司 | High damping shock absorption spherical supporting seat |
| CN201942996U (en) * | 2011-01-28 | 2011-08-24 | 洛阳双瑞特种装备有限公司 | One-way slide type vibration isolation support seat for railway bridge |
| JP2012251991A (en) * | 2011-05-10 | 2012-12-20 | Shimadzu Corp | Material testing machine |
| CN203939064U (en) * | 2014-06-17 | 2014-11-12 | 郑州大学 | Vertically-level is to pile foundation static-load testing device under compound load |
Non-Patent Citations (1)
| Title |
|---|
| 郭院成等: "竖向与水平复合荷载作用下后注浆灌注桩承载性能试验研究", 《世界地震工程》, vol. 29, no. 4, 31 December 2013 (2013-12-31) * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104457692A (en) * | 2014-12-23 | 2015-03-25 | 中国地质大学（武汉） | Measuring point device integrating sedimentation and horizontal displacement monitoring |
| CN108252334A (en) * | 2017-12-29 | 2018-07-06 | 中国电力工程顾问集团西北电力设计院有限公司 | A kind of asynchronous carriage and its ground in-situ testing device and test method |
| CN109339121A (en) * | 2018-09-10 | 2019-02-15 | 广州大学 | A kind of small-sized pile foundation dead load detection device and its detection method |
| CN109339121B (en) * | 2018-09-10 | 2023-09-05 | 广州大学 | Small pile foundation static load detection device and detection method thereof |
| CN114687388A (en) * | 2022-03-16 | 2022-07-01 | 浙江宏业检测科技有限公司 | Multidirectional loading detection device and detection method for pile foundation bearing capacity |
| CN114687388B (en) * | 2022-03-16 | 2022-10-04 | 浙江宏业检测科技有限公司 | Multidirectional loading detection device and detection method for pile foundation bearing capacity |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104005432A (en) | Pile foundation static load testing device and method under vertical and horizontal composite loads | |
| CN103335897A (en) | Concrete creep test apparatus and method | |
| CN103776685A (en) | Static force load testing device for concrete beam | |
| CN103293056A (en) | Stiffened plate structure axial compression stability test clamp and method | |
| CN103323340A (en) | Mechanical property test device and method of steel-concrete contact interface | |
| CN203350108U (en) | Concrete creep testing device | |
| CN103510552A (en) | Nonmetal anti-floating anchor rod creep test loading device | |
| CN203334187U (en) | Bracket pre-pressing structure | |
| CN104807707A (en) | Testing device and testing method for determining double-side shear performance of FRP (Fiber Reinforced Plastic)-concrete | |
| JP2014037738A (en) | Load experimental device for test piece of shield tunnel | |
| CN207295795U (en) | A kind of stake top Vertical Static Loading Test device | |
| CN104213587A (en) | P-Y curve measuring device for pseudo-static test on pile-soil interaction | |
| CN203939064U (en) | Vertically-level is to pile foundation static-load testing device under compound load | |
| CN102507248B (en) | Method for testing whether bridge bearing has void | |
| CN207215577U (en) | A kind of fire test loading beam multifunctional slip block assembly | |
| CN204924803U (en) | Hoisting point is instrument for loading test | |
| CN104032720B (en) | It is applicable to test method and the device of deep supporting course bearing capacity | |
| Shen et al. | Critical tension–shear load of elastomeric seismic isolators: An experimental perspective | |
| CN208155760U (en) | A kind of hollow square pile beam test device | |
| CN106289819A (en) | For detecting detecting tool and the detection method thereof of rail infrabasal plate combined load | |
| RU148401U1 (en) | STAND FOR TESTING REINFORCED CONCRETE ELEMENTS WITH A FIXED DEGREE OF HORIZONTAL COMPRESSION TO STATIC BEND | |
| CN207194045U (en) | A kind of building pile foundation dead-load detection device | |
| CN105780824B (en) | A kind of shaped steel method of testing for foundation ditch shaped steel inner support system | |
| CN205352648U (en) | Shear force wall is anti -seismic performance test device under composite action is cut to stretch bending | |
| CN204064817U (en) | A kind of easy vegetation root system tensile test apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140827 |