CN203066126U - Test device for simulating vertical tension-compression load effect on pile foundations - Google Patents
Test device for simulating vertical tension-compression load effect on pile foundations Download PDFInfo
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- CN203066126U CN203066126U CN 201220748712 CN201220748712U CN203066126U CN 203066126 U CN203066126 U CN 203066126U CN 201220748712 CN201220748712 CN 201220748712 CN 201220748712 U CN201220748712 U CN 201220748712U CN 203066126 U CN203066126 U CN 203066126U
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Abstract
The utility model relates to a test device for simulating a vertical tension-compression load effect on pile foundations. The test device comprises a simulation box, pile foundation models, a loading lever component, a loading beam component, horizontal sliding grooves and vertical guide rails, wherein the horizontal sliding grooves are formed in the two sides of the simulation box, the vertical guide rails are arranged on the side wall of the simulation box, the loading beam component is connected with the horizontal sliding grooves in a sliding mode, the loading lever component is connected with the loading beam component, and the pile foundation models are connected with the loading lever component and arranged in the simulation box. Compared with the prior art, the test device for simulating the vertical tension-compression load effect on the pile foundations had the advantages of being wide in range of application, high in simulation precision, simple in loading method and the like.
Description
Technical field
The utility model relates to a kind of model testing charger, especially relates to a kind of experimental rig that pile foundation is subjected to vertical tension and compression load action of simulating.
Background technology
Along with China's rapid economy development and quickening of urbanization process, the land resources growing tension.Engineering construction project is just towards aerial, underground and ocean development.Complicated and huge superstructure needs the basis that bigger support is provided, and traditional shallow foundation can't satisfy the demands.Pile foundation is rapidly developed and extensive use in recent years as a kind of comparatively ancient base form.
Traditional pile foundation plays a part carrying the pressure on top usually, its resistance to compression bearing capacity problem has been carried out a large amount of theories and experimental study both at home and abroad, and this respect research is at present still continuing.And in recent years along with the exploitation of the underground space and ocean engineering, because groundwater table is higher, underground structure and structure tend to bear bigger buoyancy, and the anti-floating problem of large-scale underground building has become the focal issue of engineering circle.In large-scale engineering was built, uplift pile was used widely, and its actual effect and economic benefit also have been subjected to the more and more higher attention of engineers and technicians.Yet about the research of uplift pile, theory but lags far behind practice.Engineering experience for many years shows that there is certain limitation in existing uplift pile theory.So the research about the uplift pile bearing capacity needs further in-depth and improvement.
Because the complexity that pile body contacts with the soil body, so the pile body bearing capacity determination often relies on on-the-spot test pile in the present engineering reality.And theoretical research need be made more hypothesis, so be starved of the correctness in conjunction with indoor model test is derived and proof theory is studied.In indoor model test, key technology is how Model Pile is carried out simple and direct loading effectively.At present, vertically press load to apply by preloading or jack usually, and pulling force often need be by comparatively complicated counterforce device.
Summary of the invention
The purpose of this utility model be exactly provide in order to overcome the defective that above-mentioned prior art exists a kind of applied widely, simulation precision is high, load mode is simply simulated the experimental rig that pile foundation is subjected to vertical tension and compression load action.
The purpose of this utility model can be achieved through the following technical solutions:
A kind ofly simulate the experimental rig that pile foundation is subjected to vertical tension and compression load action, comprise simulation box, pile foundation model, load lever assembly, load transverse beam assembly, horizontal concrete chute and vertical guide, described horizontal concrete chute is located at the simulation box both sides, described vertical guide is located on the sidewall of simulation box, described loading transverse beam assembly is connected with horizontal concrete chute slidably, described loading lever assembly is connected with the loading transverse beam assembly, described pile foundation model is connected with the loading lever assembly, and is arranged in the simulation box.
Described simulation box comprises angle iron frame, organic glass and reinforcing angle, and described angle iron frame is by the organic glass sealing moulding, and described reinforcing angle is arranged on the middle part of angle iron frame.
Described loading transverse beam assembly comprises loading crossbeam, crossbeam support pole and sliding support, and described sliding support is located on the horizontal concrete chute slidably, and described crossbeam support pole is connected with sliding support, and described loading crossbeam is connected with crossbeam support pole.
Described loading crossbeam is H shaped steel.
Described crossbeam support pole is provided with a plurality of equally distributed screws, and described loading crossbeam is connected on the crossbeam support pole adjustably by bolt.
Described loading lever assembly comprises the loading lever, load bar, fixed bearing, the moveable hinge bearing, fixing angle steel, fixed pulley, angle bar frame, steel strand and scale pan, the fulcrum of described loading lever can be connected with the loading crossbeam by fixed bearing with changing, one end of described load bar connects the loading lever by the moveable hinge bearing, the other end passes fixedly, and angle steel connects the pile foundation model, described fixed pulley is connected on the simulation box by angle bar frame, described steel strand one end is connected with the loading lever, the other end is connected with scale pan by fixed pulley, and keeps vertical direction.
One end of described loading lever is connected with vertical guide, moves along the vertical guide in the vertical direction.
Described fixedly angle steel which is provided be used to the preformed hole that passes load bar by being bolted on the simulation box.
Described fixed bearing comprises backing plate and i iron cushion block, and described backing plate and i iron cushion block are located at the upper and lower surface of loading lever respectively and clamp the loading lever by bolt, and described i iron cushion block is connected with the loading crossbeam by bolt;
Described moveable hinge bearing comprises cushion block, lower cushion block and moveable hinge, and described upward cushion block and lower cushion block are located at the upper and lower surface of loading lever respectively and clamp the loading lever by bolt, described moveable hinge and lower cushion block welding, and load bar is connected with this moveable hinge.
Described moveable hinge bearing is provided with two, is located at the two ends that load lever respectively, and two moveable hinge bearings connect two pile foundation models by load bar respectively.
Compared with prior art, the utlity model has following advantage:
1) the utility model is applied widely, simulation precision is high, has broken through existing experimental rig and can only utilize jack and complicated counterforce device could realize vertically drawing, pressing the limitation of loading;
2) the utility model can play the effect of saving loading force by changing the arm of force;
3) the pile foundation modal position is also comparatively free in the utility model simulation box, and load bar position, top also can move freely;
4) load mode is greatly simplified, and only needs to place counterweight at the scale pan of simulation box outside and just can reach loading.
Description of drawings
Fig. 1 is front view of the present utility model;
Fig. 2 is vertical view of the present utility model;
Fig. 3 is loading lever of the present utility model partial side view;
Fig. 4 is vertical guide of the present utility model partial side view.
Among the figure: 1, pile foundation model; 2, simulation box; 3, bolt; 4, load bar; 5, moveable hinge bearing; 6, load lever; 7, crossbeam support pole; 8, fixed bearing; 9, vertical guide; 10, preformed hole; 11, fixed pulley; 12, fixing angle steel; 13, steel strand; 14, angle bar frame; 15, scale pan; 16, sliding support; 17, load crossbeam; 18, angle iron frame; 19, reinforcing angle; 20, organic glass; 21, horizontal concrete chute; 22, backing plate; 23, i iron cushion block; 24, go up cushion block; 25, lower cushion block.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.Present embodiment is that prerequisite is implemented with technical solutions of the utility model, provided detailed embodiment and concrete operating process, but protection domain of the present utility model is not limited to following embodiment.
Embodiment
As Fig. 1～shown in Figure 4, a kind ofly simulate the experimental rig that pile foundation is subjected to vertical tension and compression load action, comprise simulation box 2, pile foundation model 1, load lever assembly, load transverse beam assembly, horizontal concrete chute 21 and vertical guide 9, horizontal concrete chute 21 is located at simulation box 2 both sides, vertical guide 9 is located on the sidewall of simulation box 2, loading transverse beam assembly is connected with horizontal concrete chute 21 slidably, loading lever assembly is connected with the loading transverse beam assembly, pile foundation model 1 is connected with the loading lever assembly, and is arranged in the simulation box 2.
Load transverse beam assembly and comprise loading crossbeam 17, crossbeam support pole 7 and sliding support 16, sliding support 16 is located on the horizontal concrete chute 21 slidably, crossbeam support pole 7 is connected with sliding support 16 by bolt, loads crossbeam 17 and is connected with crossbeam support pole 7, and loading crossbeam 17 is H shaped steel.Crossbeam support pole 7 is provided with a plurality of equally distributed screws, and loading crossbeam 17 is connected on the crossbeam support pole 7 adjustably by the coupling of bolt and screw.
Load lever assembly and comprise loading lever 6, load bar 4, fixed bearing 8, moveable hinge bearing 5, fixedly angle steel 12, fixed pulley 11, angle bar frame 14, steel strand 13 and scale pan 15, the fulcrum that loads lever 6 can be connected with loading crossbeam 17 by fixed bearing 8 with changing, one end of load bar 4 connects loading lever 6 by moveable hinge bearing 5, the other end passes fixedly, and angle steel 12 connects pile foundation model 1, fixed pulley 11 is connected on the simulation box 2 by angle bar frame 14, steel strand 13 1 ends are connected with loading lever 6, the other end is connected with scale pan 15 by fixed pulley 11, and the maintenance vertical direction, place above the scale pan 15 and load counterweight.
An end that loads lever 6 is connected with vertical guide 9, moves along vertical guide 9 in the vertical directions, is retrained in the horizontal direction by vertical guide.
Fixedly angle steel 12 which is provided be used to the preformed hole 10 that passes load bar by being bolted on the simulation box 2.
As shown in Figure 3, fixed bearing 8 comprises backing plate 22 and i iron cushion block 23, and backing plate 22 and i iron cushion block 23 are located at the upper and lower surface of loading lever 6 respectively and clamp loading lever 6 by bolt, and i iron cushion block 23 is connected with loading crossbeam 17 by bolt; Moveable hinge bearing 5 comprises cushion block 24, lower cushion block 25 and moveable hinge, and last cushion block 24 and lower cushion block 25 are located at the upper and lower surface of loading lever 6 respectively and clamp loading lever 6 by bolt, moveable hinge and lower cushion block 25 welding, and load bar 4 is connected with this moveable hinge.Owing to be not welding, so the moveable hinge bearing can freely be arranged along lever.
Moveable hinge bearing 5 is provided with two, is located at the two ends that load lever respectively, and two moveable hinge bearings connect two pile foundation models 1 by load bar respectively.
Shown in Fig. 1～2, simulation box is long to be 1500mm, height is 1000mm, and wide is 1000mm, is made of angle iron frame 18 and organic glass 20, and in the simulation box middle part reinforcing angle 19 is set, width is 75mm, and thickness is 5mm, and organic glass 20 thickness are 10mm, be convenient to observe soil internal displacement, load the crossbeam 17 long 1200mm of being, crossbeam support pole 7 height are 600mm, width is 100mm, thickness is 10mm, and each equidistantly arranges 16 screws the both sides of crossbeam support pole 7, loads crossbeam 17 and support column 7 and is connected with bolt by screw, dismantle easy, realize to adjust the loading equipemtn position; Load lever 6 and make for channel-section steel, length is 1500mm, highly is 100mm, the wide 48mm of leg, the thick 5.3mm of waist.Load bar 4 is round steel pipe, and diameter is 20mm.Fixedly angle steel 12 is fixing vertical load bar horizontal level, wide 50mm, thick 3mm.Fixed pulley 11 diameter 25mm, steel strand 13 diameter 3mm, long 600mm.As shown in Figure 3, two cushion blocks up and down of moveable hinge bearing 5 are that iron block is made long 60mm, wide 60mm, thick 4mm; The rotating shaft diameter 3mm of moveable hinge bearing 5; As shown in Figure 4, vertical guide 9 is made up of symmetrical angle steel, the wide 50mm of angle steel, thick 3mm, vertical height 400mm.
The course of work of this device: the filling test soil body in simulation box 2, embedding pile foundation model 1 in the soil body, can carry out half module or the full mould test of single pile, a clump of piles, open caisson foundation and stake-well composite foundation, adjust and load crossbeam 17 positions, make load bar 4 and pile foundation model 1 be in same plane; Adjust and load lever 6 in the position that loads on the crossbeam 17, make load bar centrally aligned pile foundation model center; Adjust to load the position of lever 6 on vertical guide 9, can pass through fixed pulley after making the end that loads lever connect steel strand, and fix; By adding counterweight control, can realize vertically drawing, pressing load to the basis, but and instant recording load condition (load size); Can collect data by measurement mechanism, analyze carrying and the deformation characteristic of pile foundation model, and the displacement situation of pile peripheral earth generation.
Claims (10)
1. simulate the experimental rig that pile foundation is subjected to vertical tension and compression load action for one kind, it is characterized in that, comprise simulation box, pile foundation model, load lever assembly, load transverse beam assembly, horizontal concrete chute and vertical guide, described horizontal concrete chute is located at the simulation box both sides, described vertical guide is located on the sidewall of simulation box, described loading transverse beam assembly is connected with horizontal concrete chute slidably, described loading lever assembly is connected with the loading transverse beam assembly, described pile foundation model is connected with the loading lever assembly, and is arranged in the simulation box.
2. a kind of experimental rig that pile foundation is subjected to vertical tension and compression load action of simulating according to claim 1, it is characterized in that, described simulation box comprises angle iron frame, organic glass and reinforcing angle, described angle iron frame is by the organic glass sealing moulding, and described reinforcing angle is arranged on the middle part of angle iron frame.
3. a kind of experimental rig that pile foundation is subjected to vertical tension and compression load action of simulating according to claim 1, it is characterized in that, described loading transverse beam assembly comprises loading crossbeam, crossbeam support pole and sliding support, described sliding support is located on the horizontal concrete chute slidably, described crossbeam support pole is connected with sliding support, and described loading crossbeam is connected with crossbeam support pole.
4. a kind of experimental rig that pile foundation is subjected to vertical tension and compression load action of simulating according to claim 3 is characterized in that described loading crossbeam is H shaped steel.
5. a kind of experimental rig that pile foundation is subjected to vertical tension and compression load action of simulating according to claim 3, it is characterized in that, described crossbeam support pole is provided with a plurality of equally distributed screws, and described loading crossbeam is connected on the crossbeam support pole adjustably by bolt.
6. a kind of experimental rig that pile foundation is subjected to vertical tension and compression load action of simulating according to claim 3, it is characterized in that, described loading lever assembly comprises the loading lever, load bar, fixed bearing, the moveable hinge bearing, fixing angle steel, fixed pulley, angle bar frame, steel strand and scale pan, the fulcrum of described loading lever can be connected with the loading crossbeam by fixed bearing with changing, one end of described load bar connects the loading lever by the moveable hinge bearing, the other end passes fixedly, and angle steel connects the pile foundation model, described fixed pulley is connected on the simulation box by angle bar frame, described steel strand one end is connected with the loading lever, the other end is connected with scale pan by fixed pulley, and keeps vertical direction.
7. a kind of experimental rig that pile foundation is subjected to vertical tension and compression load action of simulating according to claim 6 is characterized in that an end of described loading lever is connected with vertical guide, moves along the vertical guide in the vertical direction.
8. a kind of experimental rig that pile foundation is subjected to vertical tension and compression load action of simulating according to claim 6 is characterized in that described fixedly angle steel which is provided be used to the preformed hole that passes load bar by being bolted on the simulation box.
9. a kind of experimental rig that pile foundation is subjected to vertical tension and compression load action of simulating according to claim 6, it is characterized in that, described fixed bearing comprises backing plate and i iron cushion block, described backing plate and i iron cushion block are located at the upper and lower surface of loading lever respectively and clamp the loading lever by bolt, and described i iron cushion block is connected with the loading crossbeam by bolt;
Described moveable hinge bearing comprises cushion block, lower cushion block and moveable hinge, and described upward cushion block and lower cushion block are located at the upper and lower surface of loading lever respectively and clamp the loading lever by bolt, described moveable hinge and lower cushion block welding, and load bar is connected with this moveable hinge.
10. a kind of experimental rig that pile foundation is subjected to vertical tension and compression load action of simulating according to claim 9, it is characterized in that, described moveable hinge bearing is provided with two, is located at the two ends that load lever respectively, and two moveable hinge bearings connect two pile foundation models by load bar respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220748712 CN203066126U (en) | 2012-12-31 | 2012-12-31 | Test device for simulating vertical tension-compression load effect on pile foundations |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220748712 CN203066126U (en) | 2012-12-31 | 2012-12-31 | Test device for simulating vertical tension-compression load effect on pile foundations |
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| CN203066126U true CN203066126U (en) | 2013-07-17 |
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| CN 201220748712 Expired - Fee Related CN203066126U (en) | 2012-12-31 | 2012-12-31 | Test device for simulating vertical tension-compression load effect on pile foundations |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088307A (en) * | 2014-07-21 | 2014-10-08 | 张百全 | Method for detecting vertical bearing capacity of pile foundation |
| CN105544624A (en) * | 2016-02-23 | 2016-05-04 | 周霜林 | Static load test device for asymmetric counter weight |
| CN105862937A (en) * | 2016-05-09 | 2016-08-17 | 东华理工大学 | Pressing and pulling integrated experimental indoor pile model test device |
| CN106400856A (en) * | 2016-12-02 | 2017-02-15 | 广州建设工程质量安全检测中心有限公司 | Loading device and method for static load test of pile foundation |
| CN107313470A (en) * | 2017-06-16 | 2017-11-03 | 同济大学 | The experimental rig that the preconsolidation simulation Piled-box foundaton Long-term Cyclic Loading that pressurizes is acted on |
| CN107860644A (en) * | 2017-10-11 | 2018-03-30 | 太原理工大学 | It is a kind of can simulating natural environment condition concrete creep test apparatus |
| CN107882078A (en) * | 2017-12-27 | 2018-04-06 | 国网江苏省电力有限公司经济技术研究院 | Multi-channel synchronous multi-point loading pile foundation testing device |
| CN115468837A (en) * | 2022-10-31 | 2022-12-13 | 石家庄铁道大学 | Model test device with multifunctional loading mode and test method |
-
2012
- 2012-12-31 CN CN 201220748712 patent/CN203066126U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088307A (en) * | 2014-07-21 | 2014-10-08 | 张百全 | Method for detecting vertical bearing capacity of pile foundation |
| CN105544624A (en) * | 2016-02-23 | 2016-05-04 | 周霜林 | Static load test device for asymmetric counter weight |
| CN105862937A (en) * | 2016-05-09 | 2016-08-17 | 东华理工大学 | Pressing and pulling integrated experimental indoor pile model test device |
| CN106400856A (en) * | 2016-12-02 | 2017-02-15 | 广州建设工程质量安全检测中心有限公司 | Loading device and method for static load test of pile foundation |
| CN107313470A (en) * | 2017-06-16 | 2017-11-03 | 同济大学 | The experimental rig that the preconsolidation simulation Piled-box foundaton Long-term Cyclic Loading that pressurizes is acted on |
| CN107313470B (en) * | 2017-06-16 | 2019-03-29 | 同济大学 | The experimental rig that the preconsolidation simulation Piled-box foundaton Long-term Cyclic Loading that pressurizes acts on |
| CN107860644A (en) * | 2017-10-11 | 2018-03-30 | 太原理工大学 | It is a kind of can simulating natural environment condition concrete creep test apparatus |
| CN107860644B (en) * | 2017-10-11 | 2019-11-12 | 太原理工大学 | A kind of concrete creep test apparatus of analog natural environmental condition |
| CN107882078A (en) * | 2017-12-27 | 2018-04-06 | 国网江苏省电力有限公司经济技术研究院 | Multi-channel synchronous multi-point loading pile foundation testing device |
| CN115468837A (en) * | 2022-10-31 | 2022-12-13 | 石家庄铁道大学 | Model test device with multifunctional loading mode and test method |
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| Date | Code | Title | Description |
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| 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: 20130717 Termination date: 20151231 |
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| EXPY | Termination of patent right or utility model |