CN106193133B - A kind of slope section bridge pile foundation three-dimensional stress model experimental rig - Google Patents
A kind of slope section bridge pile foundation three-dimensional stress model experimental rig Download PDFInfo
- Publication number
- CN106193133B CN106193133B CN201610451784.9A CN201610451784A CN106193133B CN 106193133 B CN106193133 B CN 106193133B CN 201610451784 A CN201610451784 A CN 201610451784A CN 106193133 B CN106193133 B CN 106193133B
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- slope
- steel pipe
- measuring device
- vertical steel
- frame
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/10—Miscellaneous comprising sensor means
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- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
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- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention relates to model test apparatus technical field more particularly to a kind of slope section bridge pile foundation three-dimensional stress model experimental rigs.The model test apparatus includes cabinet, horizontal load measuring device, vertical load measuring device and grade of side slope measuring device；The horizontal load measuring device includes several vertical steel pipes, and the vertical steel pipe upper end is equipped with A-frame；The grade of side slope measuring device includes rotation screw rod, rotation axis, at slope template and cambered way, one end of the rotation screw rod passes through the cambered way and is connected with the rotation axis, and the other end of the rotation screw rod is equipped with the locking nut for positioning the rotation screw motion position；The rotation screw rod is moved along the cambered way, and the rotation axis is driven to rotate, and the rotation axis drives described at the rotation of slope template.The model test apparatus has structure simple, high-efficient at slope, test accuracy and high-efficient, and functional reliability is strong, and using effect is good, the advantages of convenient for promoting the use of.
Description
Technical field
The present invention relates to model test apparatus technical field more particularly to a kind of slope section bridge pile foundation three-dimensional stress models
Experimental rig.
Background technique
The hydrogeologic condition as locating for the slope section bridge pile foundation of mountain area and geographical location are complicated and changeable, on level land
Bridge pile foundation is compared, and stress and deformation characteristic are increasingly complex, therefore it is necessary to the bearing mechanism of slope bridge pile foundation and by
Systematic research is goed deep into power and deformation characteristic expansion.Existing theoretical research, three that mostly this is complicated by slope section bridge pile foundation
Dimension problem is simplified to two-dimensional plane problem to be analyzed and be studied, thus with slope section bridge pile foundation in Practical Project
There is a big difference for load situation, so that security risk can be brought to the design and construction of Practical Project.Therefore, by indoor model
The problem of test carries to study sloping area bridge pile foundation and deforms aspect, being capable of more true reasonably reaction slope and stake
The three-dimensional interactions of base.
Common geotechnical model test means mainly include indoor conventional model test and centrifugal model test both at home and abroad.
Wherein, centrifugal model test can reappear the stress field of prototype with lesser model, but be disadvantageous in that soil particle size is imitated
It is larger to answer and test consuming.Further, since moulded dimension is smaller, the type selecting of measuring instrument is arranged and is buried relatively difficult.
Currently, indoor conventional model test is to study a kind of of slope bridge pile foundation stress, deformation and stability conscientiously may be used
Capable important research means.However existing conventional model experimental rig can only apply the horizontal loading of single direction, and load
Equipment fixed setting, therefore there are larger differences compared with the load situation of Practical Project pile foundation, have in loading method bright
Aobvious limitation.And existing model test apparatus is when carrying out slope measuring, not accordingly at slope mold, and Cheng Po
Angle can not be adjusted arbitrarily, thus cannot efficiently control the gradient of model side slope, so that the production to model side slope is brought
It is inconvenient.
Summary of the invention
(1) technical problems to be solved
The object of the present invention is to provide a kind of slope section bridge pile foundation three-dimensional stress model experimental rigs, solve existing test
Device horizontal loading loading method is single, cannot effectively Controlling model grade of side slope the problem of.
(2) technical solution
In order to solve the above-mentioned technical problems, the present invention provides a kind of tests of slope section bridge pile foundation three-dimensional stress model to fill
It sets, is surveyed including cabinet, the horizontal load measuring device being arranged on the cabinet, vertical load measuring device and grade of side slope
Measure device；
Wherein the horizontal load measuring device includes several vertical steel pipes, and the upper end of the vertical steel pipe is equipped with can
The A-frame with horizontal direction rotation is moved up and down along the inner hole of the vertical steel pipe；
The grade of side slope measuring device includes rotating screw rod, rotating the rotation axis and described turn that screw rod is connect with described
Moving axis is connected vertically several at slope template and cambered way, wherein one end of the rotation screw rod passes through the cambered way
It is connected with the rotation axis, the other end of the rotation screw rod is equipped with the locking nut for positioning the rotation screw motion position；
The rotation screw rod is moved along the cambered way, and the rotation axis is driven to rotate, and the rotation axis drives described at slope template
Rotation.
Further, the vertical load measuring device include reaction frame, the test pile that is arranged in below the reaction frame
And jack, one end of the jack are connected with the reaction frame, the other end of the jack and the test pile phase
Even.
Specifically, it is equipped with backing plate between the jack and the test pile, is additionally provided with first on the jack
Force snesor.
Further, the horizontal load measuring device further includes pulley, wirerope and load counterweight, wherein the pulley
It is mounted on the A-frame, one end of the wirerope is connected with the test pile, and the other end of the wirerope passes through
The pulley is connected with the load counterweight, and the second force snesor is additionally provided on the wirerope.
Specifically, the cabinet is the rectangular parallelepiped structure of upper opening, and the cabinet is by supporting steel frame and is arranged in institute
State the glass baffle plate composition of supporting steel frame surrounding.
Further, the vertical steel pipe includes the first vertical steel pipe, the second vertical steel pipe and third vertical steel pipe, wherein
First vertical steel pipe, the second vertical steel pipe and the third vertical steel pipe is separately positioned on three adjacent side walls of the cabinet
On.
Specifically, the both ends of the vertical steel pipe pass through connection component respectively and are connected with the supporting steel frame, the connection
Component includes buckling and connecting bolt, wherein the interconnecting piece group buckled by holding section and the holding section both ends are arranged in
At, the vertical steel pipe is arranged between the holding section and the supporting steel frame, the supporting steel frame and the interconnecting piece it
Between it is connected by the connection bolt.
Specifically, the curved angle of the cambered way be 90 °, the both ends of the cambered way respectively with the supporting steel
Frame is connected.
Specifically, the supporting steel frame of the bottom of box is equipped with through-hole compatible with the rotation axis, the rotation
The both ends of axis are each passed through the through-hole and stretch out outside the supporting steel frame.
Specifically, the A-frame is positioned by locating piece and the vertical steel pipe, and the locating piece is positioning
Bolt.
(3) beneficial effect
Above-mentioned technical proposal of the invention has the advantages that
Slope section bridge pile foundation three-dimensional stress model experimental rig provided by the invention, by adjusting the rotation screw rod edge
The cambered way movement, drives the rotation axis to rotate, and then drives and be connected to rotating in the rotation axis at slope template,
It can form the model side slope of different angle, it can be according to the rotation screw rod needed for ramp slope to be simulated, will be adjusted when test
The slope gradient is controlled into, to improve test accuracy and efficiency；By adjusting the triangle branch for being mounted on the vertical steel pipe upper end
Frame moves up and down to adapt to the test pile of different height in the inner hole of the vertical steel pipe, exists by adjusting A-frame
Horizontal direction rotation is carried out in the inner hole of the vertical steel pipe to adapt to the horizontal force of different directions.There is the present invention structure simply to close
Reason, vdiverse in function, test accuracy and high-efficient high-efficient at slope, functional reliability is strong, and using effect is good, convenient for promoting the use of
The advantages of.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of slope section bridge pile foundation three-dimensional stress model experimental rig of the embodiment of the present invention；
Fig. 2 is to amplify signal in Fig. 1 of slope section bridge pile foundation three-dimensional stress model experimental rig of the embodiment of the present invention at A
Figure；
Fig. 3 is grade of side slope control schematic diagram of the embodiment of the present invention；
Fig. 4 is to amplify signal in Fig. 1 of slope section bridge pile foundation three-dimensional stress model experimental rig of the embodiment of the present invention at B
Figure；
Fig. 5 is to amplify signal in Fig. 1 of slope section bridge pile foundation three-dimensional stress model experimental rig of the embodiment of the present invention at C
Figure；
Fig. 6 is the structural representation of the further embodiment of slope section bridge pile foundation three-dimensional stress model experimental rig of the present invention
Figure.
In figure: 1: supporting steel frame；2: vertical steel pipe；3: A-frame；4: connection component；5: rotation screw rod；6: rotation axis；
7: at slope template；8: cambered way；9: locking nut；10: reaction frame；11: test pile；12: jack；13: pulley；14: steel
Cord；15: load counterweight；16: backing plate；201: the first vertical steel pipes；202: the second vertical steel pipes；203: third vertical steel pipe；
401: buckle；402: connection bolt.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
As shown in Figs. 1-5, slope section bridge pile foundation three-dimensional stress model experimental rig provided in an embodiment of the present invention, including
Cabinet, the horizontal load measuring device being arranged on the cabinet, vertical load measuring device and grade of side slope measuring device.
The horizontal load measuring device includes several vertical steel pipes 2, and the upper end of the vertical steel pipe 2 is equipped with being capable of edge
The inner hole of the vertical steel pipe 2 moves up and down the A-frame 3 with horizontal direction rotation.In use, by adjusting described three
Angle support 3 moves up and down to adapt to the test pile of different height in the inner hole of the vertical steel pipe 2, by adjusting triangle
Bracket 3 carries out horizontal direction in the inner hole of the vertical steel pipe 2 and rotates to adapt to the horizontal force of different directions, easy to operate, mentions
The high precision and efficiency of horizontal load measurement.
The grade of side slope measuring device include rotate screw rod 5, with it is described rotate screw rod 5 connect rotation axis 6, with it is described
Rotation axis 6 is connected vertically several at slope template 7 and cambered way 8, wherein one end of the rotation screw rod 5 passes through the arc
Shape slideway 8 is connected with the rotation axis 6, and the other end of the rotation screw rod 5, which is equipped with, positions the rotation screw motion position
Locking nut 9.In use, the adjustment rotation screw rod 5 is moved along the cambered way 8, then the rotation screw rod 5 drives described
Rotation axis 6 rotate, the rotation axis 6 drive it is described at slope template 7 rotate, thus realize control at the slope gradient purpose.At this
The curved angle of cambered way 8 described in embodiment is set as 90 °, by adjusting the rotation screw rod 5 position can form 0~
90 ° of model side slope substantially increases the precision and efficiency of grade of side slope measurement.
Furthermore, it is understood that the vertical load measuring device includes reaction frame 10, is arranged in below the reaction frame 10
Test pile 11 and jack 12, one end of the jack 12 are connected with the reaction frame 10, the jack 12 it is another
End is connected with the test pile 11.Backing plate 16 is equipped between the jack 12 and the test pile 11, in the jack
The first force snesor is additionally provided on 12.When in use, vertical load is controlled and applies by the jack 12, by described
First force snesor measures the vertical load size applied every time.
Furthermore, it is understood that the horizontal load measuring device further includes pulley 13, wirerope 14 and loads counterweight 15, wherein
The pulley 13 is mounted on the A-frame 3, and one end of the wirerope 14 is connected with the test pile 11, the steel wire
The other end of rope 14 passes through the pulley 13 and is connected with the load counterweight 15, and the second power biography is additionally provided on the wirerope 14
Sensor.When in use, apply different pile foundation level loads by applying different load counterweights, passed by second power
Sensor measures the horizontal loading size applied every time.
Wherein, the pulley 13 is adjustable is movably arranged on the A-frame 3, and the pulley 13 can be relative to
The A-frame 3 is rotated at 360 ° of horizontal direction, when needing to measure the horizontal force of different directions, the adjustable pulley 13
Angle, keep the direction of the pulley 13 consistent with the horizontal force direction that needs measure, so guarantee measurement different directions water
Accuracy when flat power.
Specifically, the cabinet is the rectangular parallelepiped structure of upper opening, and the cabinet is existed by supporting steel frame 1 and setting
The glass baffle plate of 1 surrounding of supporting steel frame forms.Wherein the supporting steel frame 1 is attached using connecting method, by saturating
Bright glass baffle plate can intuitively be clearly observed the situation of change of the intracorporal soil body of case and model foundation pile, structure letter very much
It is single, and disassemble and install very convenient.
Specifically, the cambered way 8 is made of two arc panels disposed in parallel, is formed and is slided between two arc panels
Road, for limiting the sliding trace of the rotation screw rod 5, the both ends of the cambered way 8 pass through bolt and the support respectively
Steelframe 1 is connected.
Specifically, the upper and lower ends of the vertical steel pipe 2 pass through connection component 4 respectively and are connected with the supporting steel frame 1,
The connection component 4 includes buckle 401 and connection bolt 402, wherein the buckle 401 is by holding section and is arranged in the card
The interconnecting piece at conjunction portion both ends forms, and the vertical steel pipe 2 is arranged between the holding section and the supporting steel frame 1, the branch
It is connected between support steelframe 1 and the interconnecting piece by the connection bolt 402.
Specifically, the supporting steel frame of the bottom of box be equipped with through-hole compatible with the rotation axis 6, described turn
The both ends of moving axis 6 are each passed through the outside that the through-hole stretches out the supporting steel frame 1.In the rotation axis 6 be equipped with it is described
The compatible through-hole of screw rod 5 is rotated, one end of the rotation screw rod 5 passes through the through-hole and is connected with the rotation axis 6, when described
When rotating the movement of screw rod 5, the rotation axis 6 can be driven to be rotated.
Specifically, the A-frame 3 carries out locking positioning, the positioning by locating piece and the vertical steel pipe 2
Positioning bolt can be used in part.When needing to adjust the lifting position or rotational angle of the A-frame 3, the positioning spiral shell is unclamped
Bolt can be adjusted, and when position is fixed, need to only be locked the positioning bolt, easy to operate.
Specifically, during the test, Controlling model side slope can be carried out by adjusting the quantity at slope template 7
Highly, and it is described be detachably arranged in the rotation axis 6 at slope template 7, load and unload it is very convenient, and dismantle completely it is described at
After slope template 7, which is the model test apparatus that can be changed to non-analog slope.
As shown in fig. 6, in further embodiment of the present invention, the vertical steel pipe includes the first vertical steel pipe 201, the
Two vertical steel pipes 202 and third vertical steel pipe 203, wherein first vertical steel pipe 201, the second vertical steel pipe 202 and the
Three vertical steel pipes 203 are separately positioned on three adjacent side walls of the cabinet, in first vertical steel pipe 201, second
Vertical steel pipe 202 and third vertical steel pipe 203 install an A-frame respectively, are formed in the horizontal load of three different directions
Measuring device.When in use, can the first vertical steel pipe 201, the second vertical steel pipe 202 and third vertical steel pipe 203 successively
It is tested, further expansion horizontal load measurement direction and range.
Certainly, the horizontal load direction applied as needed, can be in each side wall in three side walls of the cabinet
On multiple vertical steel pipes are respectively set, so as to apply the horizontal loading on horizontal plane on 0~180 ° of any direction, thus pole
The earth improves test accuracy and test efficiency.
In conclusion slope section bridge pile foundation three-dimensional stress model experimental rig provided in an embodiment of the present invention, has such as
Lower advantage:
1, the horizontal load measuring device, vertical load measuring device and grade of side slope by being arranged on the cabinet
Measuring device realizes the model test operation of three-dimensional carrying condition lower stress, deformation and stability, and structure is simple, novel in design
Rationally, vdiverse in function.
2, the present invention controls into the slope gradient by adjusting rotation screw rod, can according to by needed for ramp slope to be simulated
The model side slope for forming 0 °~90 °, greatlys improve test accuracy and efficiency.
3, the present invention is by the fit system between A-frame and vertical steel pipe, by adjusting the upper bottom of A-frame
It sets to adapt to the test pile of different height；Angle is rotated by adjusting the horizontal plane of A-frame, and then adapts to different directions
Horizontal force.
4, the present invention also has measurement accuracy and high-efficient, and functional reliability is strong, and at low cost, using effect is good, uses the longevity
Life length, is convenient for the advantages of promoting the use of.
In the description of the present invention, it should be noted that unless otherwise indicated, the meaning of " plurality " is two or two with
On；The orientation or positional relationship of the instructions such as term " on ", "lower", "left", "right", "inner", "outside" is side based on the figure
Position or positional relationship, are merely for convenience of description of the present invention and simplification of the description, rather than the device or member of indication or suggestion meaning
Part must have a particular orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.This
Outside, term " first ", " second ", " third " etc. are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " installation ",
" connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally connect
It connects；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be indirectly connected through an intermediary.It is right
For those skilled in the art, visual concrete condition understands the concrete meaning of above-mentioned term in the present invention.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (8)
1. a kind of slope section bridge pile foundation three-dimensional stress model experimental rig, it is characterised in that: including cabinet, be arranged in the case
Horizontal load measuring device, vertical load measuring device and grade of side slope measuring device in body；
Wherein the horizontal load measuring device includes several vertical steel pipes, and the upper end of the vertical steel pipe is equipped with can be along institute
The inner hole for stating vertical steel pipe moves up and down the A-frame rotated with horizontal direction；
The grade of side slope measuring device includes the rotation axis and the rotation axis for rotating screw rod, connecting with the rotation screw rod
It is connected vertically several at slope template and cambered way, wherein one end of the rotation screw rod passes through the cambered way and institute
It states rotation axis to be connected, the other end of the rotation screw rod is equipped with the locking nut for positioning the rotation screw motion position；It is described
Rotation screw rod is moved along the cambered way, and the rotation axis is driven to rotate, and the rotation axis drives described at the rotation of slope template；
The cabinet is the rectangular parallelepiped structure of upper opening, and the cabinet is by supporting steel frame and is arranged in the supporting steel frame four
The glass baffle plate composition in week；
The both ends of the vertical steel pipe pass through connection component respectively and are connected with the supporting steel frame, and the connection component includes buckle
It is described vertical wherein the buckle is by holding section and the interconnecting piece at the holding section both ends is arranged in forms with connection bolt
Steel pipe is arranged between the holding section and the supporting steel frame, passes through the company between the supporting steel frame and the interconnecting piece
Connecting bolt is connected.
2. slope section bridge pile foundation three-dimensional stress model experimental rig according to claim 1, it is characterised in that: described perpendicular
It include reaction frame, the test pile and jack that are arranged in below the reaction frame to load-measuring device, the jack
One end is connected with the reaction frame, and the other end of the jack is connected with the test pile.
3. slope section bridge pile foundation three-dimensional stress model experimental rig according to claim 2, it is characterised in that: described
It is equipped with backing plate between jack and the test pile, the first force snesor is additionally provided on the jack.
4. slope section bridge pile foundation three-dimensional stress model experimental rig according to claim 2, it is characterised in that: the water
Flat load-measuring device further includes pulley, wirerope and load counterweight, wherein the pulley is mounted on the A-frame, institute
The one end for stating wirerope is connected with the test pile, and the other end of the wirerope passes through the pulley and the load counterweight phase
Even, the second force snesor is additionally provided on the wirerope.
5. slope section bridge pile foundation three-dimensional stress model experimental rig according to claim 1, it is characterised in that: described perpendicular
It include the first vertical steel pipe, the second vertical steel pipe and third vertical steel pipe to steel pipe, wherein first vertical steel pipe, second
Vertical steel pipe and third vertical steel pipe are separately positioned on three side walls of the cabinet.
6. slope section bridge pile foundation three-dimensional stress model experimental rig according to claim 1, it is characterised in that: the arc
The curved angle of shape slideway is 90 °, and the both ends of the cambered way are connected with the supporting steel frame respectively.
7. slope section bridge pile foundation three-dimensional stress model experimental rig according to claim 1, it is characterised in that: the case
The supporting steel frame of body bottom is equipped with through-hole compatible with the rotation axis, and the both ends of the rotation axis are each passed through described logical
Hole is stretched out outside the supporting steel frame.
8. slope section bridge pile foundation three-dimensional stress model experimental rig according to claim 1, it is characterised in that: described three
Angle support is positioned by locating piece and the vertical steel pipe, and the locating piece is positioning bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610451784.9A CN106193133B (en) | 2016-06-21 | 2016-06-21 | A kind of slope section bridge pile foundation three-dimensional stress model experimental rig |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610451784.9A CN106193133B (en) | 2016-06-21 | 2016-06-21 | A kind of slope section bridge pile foundation three-dimensional stress model experimental rig |
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| CN106193133A CN106193133A (en) | 2016-12-07 |
| CN106193133B true CN106193133B (en) | 2019-01-22 |
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| CN107023042B (en) * | 2017-04-11 | 2022-06-28 | 青岛理工大学 | Dynamic loading device for pile bearing towering structure model test |
| CN107014670B (en) * | 2017-04-28 | 2023-10-17 | 浙江科技学院 | Testing device for multi-directional horizontal bearing capacity of single pile under composite load |
| CN107255701B (en) * | 2017-07-07 | 2018-04-17 | 石家庄铁道大学 | Pile-anchor retaining model assay systems for In A Crushed Rock Slope engineering |
| CN108593420B (en) * | 2018-04-12 | 2020-07-21 | 东南大学 | Physical test model box capable of being loaded in three dimensions and using method thereof |
| CN108563887A (en) * | 2018-04-23 | 2018-09-21 | 北京智交慧桥科技有限公司 | A kind of intelligent analysis system of Test on Bridge Loading |
| CN110827655A (en) * | 2018-11-27 | 2020-02-21 | 合肥工业大学 | Test loading device of assembled structure model |
| CN109403396B (en) * | 2018-12-24 | 2024-03-12 | 西安建筑科技大学 | Horizontal and upward pulling combined loading device and method for pile foundation model test |
| CN110185074B (en) * | 2019-06-26 | 2023-10-20 | 金陵科技学院 | Inclined pile model test device and test method |
| CN110439043A (en) * | 2019-08-21 | 2019-11-12 | 广西瑞宇建筑科技有限公司 | It is a kind of can multidirectional load swelled ground pile foundation experimental provision |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101072721B1 (en) * | 2008-09-12 | 2011-10-11 | 김형남 | Apparatus for pile load test |
| CN203701160U (en) * | 2014-02-11 | 2014-07-09 | 河南科技大学 | Model test device for pile foundation in frozen soil environment |
| CN203755358U (en) * | 2014-02-28 | 2014-08-06 | 长安大学 | Testing device used for measuring bearing capacity of abrupt slope bridge pile foundation |
| CN203799536U (en) * | 2014-03-20 | 2014-08-27 | 漯河医学高等专科学校 | Ramp-adjustable teaching aid for physical experiments |
| CN104631519B (en) * | 2015-01-13 | 2016-03-02 | 河海大学 | Pile foundation bearer properties model test apparatus and test method under complicated loads |
| CN204720098U (en) * | 2015-07-01 | 2015-10-21 | 中国核动力研究设计院 | The experiment body support of tilt adjustable |
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