CN204461981U - A kind of pile tube Vertical Static Loading Test visual Simulation device - Google Patents

A kind of pile tube Vertical Static Loading Test visual Simulation device Download PDF

Info

Publication number
CN204461981U
CN204461981U CN201420799325.6U CN201420799325U CN204461981U CN 204461981 U CN204461981 U CN 204461981U CN 201420799325 U CN201420799325 U CN 201420799325U CN 204461981 U CN204461981 U CN 204461981U
Authority
CN
China
Prior art keywords
pile
pull bar
model
plate
preformed hole
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.)
Expired - Fee Related
Application number
CN201420799325.6U
Other languages
Chinese (zh)
Inventor
王家全
朱庆盛
周岳富
黄柳云
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangxi University of Science and Technology
Original Assignee
Guangxi University of Science and Technology
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Guangxi University of Science and Technology filed Critical Guangxi University of Science and Technology
Priority to CN201420799325.6U priority Critical patent/CN204461981U/en
Application granted granted Critical
Publication of CN204461981U publication Critical patent/CN204461981U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model discloses a kind of pile tube Vertical Static Loading Test visual Simulation device, loading system is fixed by bolts on reaction frame, push-and-pull motor is fixed on reaction frame, pull bar is connected on push-and-pull motor, be connected with pull bar by tension-compression sensor by disposed thread in pull bar middle part, tension-compression sensor wire is connected to and loads on data control equipment; The pull bar of loading system is through the preformed hole on reaction frame; Model Pile upper end is connected to the below of pull bar by joint sleeve; Model Pile is through the preformed hole on location-plate, and location-plate is fixed on support by connecting button, and the preformed hole on reaction frame and the preformed hole passed on location-plate are on same pedal line; Model Pile lower end is stretched in model casing through the preformed hole on location-plate.Can test accuracy be improved, the change of oil and pile in process of the test can be observed by visualization device intuitively.

Description

A kind of pile tube Vertical Static Loading Test visual Simulation device
Technical field
The utility model belongs to testing equipment technical field, relates to a kind of pile tube Vertical Static Loading Test visual Simulation device.
Background technology
Pile tube erect static load is a complicated process, comprises vertical compression and vertically pulling-resistant.Indoor model test is a kind of effective means studying pile tube static load, can by its mechanism of technique study of indoor model test.At present, pile tube Vertical Static Loading Test mostly is test in situ, simulation laboratory test application or seldom, the research of indoor static load simulation test in resistance to plucking is more rare, and the test unit of simulation laboratory test and analogy method also very immature.The rectangular vessel that the useful fragment of brick of existing test model case, cement and mortar are built into.The method construction is simple, easily realize and also cost lower, but this model casing is irremovable and be not easy to the change of viewing test pile and soil.Existing test model case also useful angle steel and Plate Welding, this model casing is compared with the rectangular vessel be built into fragment of brick, cement and mortar certain advantage, this model casing is convenient to mobile, be convenient to the mobile needs in process of the test, but this model casing is still not easy to viewing test pile and native change.Existing charger is also had nothing in common with each other, have and adopt special screw rod, at the uniform velocity rotate with artificial the experiment loading unit applying pile top load, this charger screw rod rotates may produce moment of torsion, comparatively large to the interference ratio of test, thus cause the control accuracy tested to reduce.Existing charger also useful servomotor loads, the impact of this device artificial interference is relatively little, the control accuracy of the device experiment that the special screw rod of relative employing loads has had and has significantly improved, but this load mode can not pile tube Vertical Static Loading Test well in simulating reality.
In summary, existing pile tube indoor simulation device and analogy method respectively have relative merits, so select a kind of more excellent pile tube indoor simulation device and the analogy method precision controlling to test very crucial.
Utility model content
The purpose of this utility model is to overcome the defect existed in prior art, a kind of pile tube Vertical Static Loading Test visual Simulation device is provided, can well pile tube Vertical Static Loading Test in simulating reality, not only can simulate vertical compression test, vertically pulling-resistant test can also be simulated, improve test accuracy, can constant force and uniform load, can free adjustment, conveniently pressure single pile and a clump of piles.More important point is, can be observed the change of oil and pile in process of the test by visualization device very intuitively.
The technical scheme that the utility model adopts is, a kind of pile tube Vertical Static Loading Test visual Simulation device, and loading system is fixed by bolts on reaction frame, and loading system comprises push-and-pull motor, tension-compression sensor and pull bar; Push-and-pull motor is fixed on reaction frame, and pull bar is connected on push-and-pull motor, is connected by tension-compression sensor by disposed thread in pull bar middle part with pull bar, and tension-compression sensor wire is connected to and loads on data control equipment; The pull bar of loading system is through the preformed hole on reaction frame; Model Pile upper end is connected to the below of pull bar by joint sleeve, is sheet steel in the middle part of joint sleeve, and top is the round steel pipe mated with pull bar, and bottom is the semicircle steel pipe mated with Model Pile; Model Pile is through the preformed hole on location-plate, and location-plate is fixed on support by connecting button, and the preformed hole on reaction frame and the preformed hole passed on location-plate are on same pedal line; Model Pile lower end is stretched in model casing through the preformed hole on location-plate.
The beneficial effects of the utility model are: first, and because reaction frame in process of the test is generally fixed, but test sometimes needs to change piling position, and the utility model model casing is convenient to mobile, for test provides advantage.Meanwhile, testing equipment can carry out static-loading test and vertically pulling-resistant static test, and hierarchical loading controls to realize servocontrol and automatic collection of data realization ensures that precision reduces personal error.Secondly, the change of oil and pile in process of the test can be observed very intuitively by visualization device.
Accompanying drawing explanation
Fig. 1 is model test apparatus structural representation of the present utility model.
Fig. 2 is positive two views of model test apparatus of the present utility model.
Fig. 3 is mold box configuration schematic diagram of the present utility model.
Fig. 4 is joint sleeve structural representation of the present utility model.
In figure, 1. model casing, 2. directed pulley, 3. Model Pile, 4. button fixed by support, 5. preformed hole, 6. joint sleeve, 7. pull bar, 8. loading system, 9. reaction frame, 10. location-plate, 11. supports, 12. connect button, and 13. load data control equipment, 14. statical strain indicators, 15. high-definition digital cameras, 16. computers, 17. steel plates, 18. cross ribs, 19. tempered glass, 61. sheet steels, 62. round steel pipes, 63. semicircle steel pipes.
Embodiment
The structure of the utility model pile tube Vertical Static Loading Test visual Simulation device, as shown in figures 1-4, loading system 8 is fixed by bolts on reaction frame 9.Loading system 8 comprises push-and-pull motor, tension-compression sensor and pull bar 7.Push-and-pull motor is fixed on reaction frame 9, and pull bar 7 is connected on push-and-pull motor, tension-compression sensor and pull bar is coupled together by disposed thread in pull bar 7 middle part, and tension-compression sensor wire is connected to and loads on data control equipment 13.The pull bar 7 of loading system 8 is through the preformed hole 5 on reaction frame 9.Four supports 11 are fixed button 4 with support and are fixed on the chute of ground.Model Pile 3 adopts half module aluminum pipe, and upper end is connected to the below of pull bar 7 by joint sleeve 6, is sheet steel 61 in the middle part of this joint sleeve 6, and top is the round steel pipe 62 mated with pull bar 7, and bottom is the semicircle steel pipe 63 mated with Model Pile 3.Model Pile 3 is through the preformed hole 5 on location-plate 10, and location-plate 10 is fixed on support 11 by connecting button 12, by the preformed hole 5 on guarantee reaction frame 9 and the verticality ensureing piling through the preformed hole 5 on location-plate 10 on same pedal line.Model Pile 3 lower end is stretched in model casing 1 through the preformed hole 5 on location-plate 10.
One of them two adjacent surfaces of model casing 1 is tempered glass 19, and another one two adjacent surfaces and model casing bottom surface are steel plate 17, is that the middle part of tempered glass is equipped with by angle steel and bolted cross rib 18 in model casing side.
In the test preparatory stage, in model casing 1, first fill test test used native, equally spacedly in Model Pile 3 sticks resistance strain plate, and foil gauge wire is connected on statical strain indicator 14, and then statical strain indicator 14 is connected on computer 16.Secondly, loading system 8 is connected to and loads on data control equipment 13.Finally, regulate the preformed hole 5 on reaction frame 9 and the preformed hole 5 on location-plate 10 on same pedal line, then allow Model Pile 3 through the preformed hole 5 on location-plate 10, stake top and pull bar 7 are connected on joint sleeve 6.High-definition digital camera 15 is adjusted in the side that tempered glass 19 is housed at model casing 1, then high-definition digital camera 15 is connected on computer 16, and on clear glass, demarcates 4 fixed points, mainly in order to later stage image procossing provides coordinate points.Test ready after, prepare piling and be depressed into destination locations and start to do static test, static load not only can do static-loading test here, can also do vertically pulling-resistant static test.
By resistance strain plate, tension-compression sensor and soil pressure cell, (soil pressure cell is embedded in soil layer in the process of banketing, soil pressure cell is connected on statical strain indicator 14) etc. instrument, can analytical test data, sum up pile tube static-loading test pile wall pressure along pile body Changing Pattern, in the ageing situation of change of same depth location pile friction Changing Pattern, bearing capacity of pile situation of change and pile body.Also have an important method in this utility model process of the test, namely utilize high-definition digital camera 15 to take the situation of change of record soil around pile, finally utilize photo handling software to analyze the situation of change of displacement around pile field.
Wherein, model casing 1 framework is welded by 50mm × 50mm × 5mm angle steel, model casing 1 wherein two adjacent side is welded by two blocks of 6mm steel plates 17 and angle steel, two other adjacent side is made up of two blocks of thick transparent tempered glass 19 of 12mm, bottom surface is welded by 6mm steel plate 17 and angle steel, four directed pulleys 2 are installed in the bottom of model casing 1, directed pulley 2 drops on and is fixed on chute on the ground, object is convenient to piling need and movable model casing, a clamp installed by directed pulley 2, directed pulley 2 is fixed with clamp when model casing moves to desired location.Data collector is statical strain indicator 14 and computer 16 mainly, gathers the experimental data of tension-compression sensor and foil gauge in experimentation.Image collecting device is high-definition digital camera 15 and computer 16 mainly, can be observed the change of oil and pile in process of the test by image collecting device very intuitively.
An analogy method for pile tube Vertical Static Loading Test visual Simulation device, comprises the following steps:
1) first adjust experimental provision, needed for Model Pile 3 being pressed onto, do the position of static test;
2) loading system 8 that is displaced through that test loads controls, displacement at pile top controls particular by the rotating speed of the push-and-pull motor of controlled loading system 8 li, push-and-pull motor is built-in with counter, counter can record accumulated pulse number, the displacement of accurate record pull bar, whole process carrys out control operation by preprogramming;
3) loading system 8 li has a tension-compression sensor, the withdrawal resistance size applied when pile top load size when can measure vertical compression static load and vertically pulling-resistant;
4) P-S curve can be drawn by pile top load size and displacement at pile top amount.
When shaft load puts on stake top step by step, pile body is compressed and produces downward displacement, can calculate pile body side friction between the i-th section to the i-th+1 section, be specifically calculated as follows by pile body each section part axle power:
q s ( i , i + 1 ) = ( Q i - Q i + 1 ) A si
In formula: q s(i, i+1)--pile body side friction between the i-th section to the i-th+1 section
Q i--pile body each section part axle power
A si--stake side surface area between the i-th section to the i-th+1 section
The pile shaft force Q of each section part i:
Q i=E PA Pε i
In formula:
E p-pile body elastic modulus;
A p-pile body sectional area.
Also can do following optimization:
1) guide piece is set when loading, has had the verticality that guide piece can ensure in piling process.Guide piece can free adjustment and fixing, so just can press single pile and a clump of piles very easily.
2) in the process of image acquisition, in order to avoid the interference of extraneous light and the precision of raising image acquisition, respectively on high-definition digital camera both sides a special light source can be made a call to.

Claims (5)

1. a pile tube Vertical Static Loading Test visual Simulation device, it is characterized in that, loading system (8) is fixed by bolts on reaction frame (9), and loading system (8) comprises push-and-pull motor, tension-compression sensor and pull bar (7); Push-and-pull motor is fixed on reaction frame (9), pull bar (7) is connected on push-and-pull motor, be connected with pull bar (7) by tension-compression sensor by disposed thread in pull bar (7) middle part, tension-compression sensor wire is connected to and loads on data control equipment (13); The pull bar (7) of loading system (8) is through the preformed hole (5) on reaction frame (9); Model Pile (3) upper end is connected to the below of pull bar (7) by joint sleeve (6), joint sleeve (6) middle part is sheet steel (61), the round steel pipe (62) of top for mating with pull bar (7), bottom is the semicircle steel pipe (63) mated with Model Pile (3); Model Pile (3) is through the preformed hole (5) on location-plate (10), location-plate (10) is fixed on support (11) by connecting button (12), and the preformed hole (5) on reaction frame (9) and the preformed hole (5) passed on location-plate (10) are on same pedal line; Model Pile (3) lower end is stretched in model casing (1) through the preformed hole (5) on location-plate (10).
2. a kind of pile tube Vertical Static Loading Test visual Simulation device according to claim 1, it is characterized in that, described model casing (1) one of them two adjacent surfaces is tempered glass (19), another one two adjacent surfaces and bottom surface are steel plate (17), are that the middle part of tempered glass is equipped with by angle steel and bolted cross rib (18) in model casing side.
3. a kind of pile tube Vertical Static Loading Test visual Simulation device according to claim 1, it is characterized in that, described Model Pile (3) is above equally spaced posts resistance strain plate, resistance strain plate wire is connected on statical strain indicator (14), statical strain indicator (14) is connected on computer (16), the side that model casing (1) is equipped with tempered glass (19) arranges high-definition digital camera (15), then high-definition digital camera (15) is connected on computer (16).
4. a kind of pile tube Vertical Static Loading Test visual Simulation device according to claim 1, it is characterized in that, four directed pulleys (2) are installed in the bottom of described model casing (1), the upper installation clamp of directed pulley (2).
5. a kind of pile tube Vertical Static Loading Test visual Simulation device according to claim 1, it is characterized in that, described support (11) is fixed button (4) with support and is fixed on the chute of ground.
CN201420799325.6U 2014-12-16 2014-12-16 A kind of pile tube Vertical Static Loading Test visual Simulation device Expired - Fee Related CN204461981U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420799325.6U CN204461981U (en) 2014-12-16 2014-12-16 A kind of pile tube Vertical Static Loading Test visual Simulation device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420799325.6U CN204461981U (en) 2014-12-16 2014-12-16 A kind of pile tube Vertical Static Loading Test visual Simulation device

Publications (1)

Publication Number Publication Date
CN204461981U true CN204461981U (en) 2015-07-08

Family

ID=53668850

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420799325.6U Expired - Fee Related CN204461981U (en) 2014-12-16 2014-12-16 A kind of pile tube Vertical Static Loading Test visual Simulation device

Country Status (1)

Country Link
CN (1) CN204461981U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104515734A (en) * 2014-12-16 2015-04-15 广西科技大学 Visualization simulator and simulation method for tubular pile vertical static test
CN106592655A (en) * 2016-12-30 2017-04-26 太原理工大学 Tubular pile sinking simulation test device and method under gradient confining pressure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104515734A (en) * 2014-12-16 2015-04-15 广西科技大学 Visualization simulator and simulation method for tubular pile vertical static test
CN104515734B (en) * 2014-12-16 2017-01-11 广西科技大学 Visualization simulator and simulation method for tubular pile vertical static test
CN106592655A (en) * 2016-12-30 2017-04-26 太原理工大学 Tubular pile sinking simulation test device and method under gradient confining pressure

Similar Documents

Publication Publication Date Title
CN104515734A (en) Visualization simulator and simulation method for tubular pile vertical static test
CN107179396B (en) Multifunctional assembled geotechnical engineering physical similarity test system
CN104452834B (en) Static pressure pipe pile visual pile sinking number device for picking and residual stress method for measurement
CN105040754B (en) Device for testing limited soil mass rigid retaining wall soil pressure model
CN103953074B (en) A kind of open-end pipe pile hammering injection analogue experiment installation and experimental technique
CN104631519A (en) Pile foundation bearing characteristic model test device and method under complicated load effect
CN101832993B (en) Semi-module test box for dynamic compaction reinforced foundation model test
CN102914475B (en) Shear test device for observing mechanical property of interface between underwater soil and structure
CN108007800B (en) Model test device and test method for circular dynamic load soil body settlement
CN105510153A (en) Large-scale soil interface shear test model and test method
CN108343099B (en) Device and method for testing horizontal bearing capacity of pile under dynamic wave pressure
CN204461981U (en) A kind of pile tube Vertical Static Loading Test visual Simulation device
CN104034608B (en) Vertical drawing type Bidirectional contact face shear strength parameter test device and method of testing
CN102912812A (en) Model test device for simulating jacked pile driving process
CN107942038A (en) Slope retaining model assay systems and test method
CN202661333U (en) Volume change continuous monitoring device for triaxial consolidation-shearing test
CN105672379A (en) Foundation pit excavation model test device under dynamic artesian water action
CN211602719U (en) Stope mine pressure three-dimensional physical simulation test platform of multi-functional top bottom plate gushing water
CN201681162U (en) Landslide simulation experiment device
CN204919633U (en) Limited soil body rigidity barricade soil pressure model test device
CN107178102B (en) Test system and test method for ultimate bearing capacity model of through-hole type foundation pile
CN111622277B (en) Test device and test method for simulating influence of pile end cavities on bearing performance of pile foundation
CN203982667U (en) Ribbing geomembrane composite pad system model test unit
CN204314159U (en) Deep hole rock/upper in-situ test robot
CN204311472U (en) Static pressure pipe pile visual pile sinking number device for picking

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

Granted publication date: 20150708

Termination date: 20171216

CF01 Termination of patent right due to non-payment of annual fee