GB2614408A - Model test box with multifunctional loading method - Google Patents

Model test box with multifunctional loading method Download PDF

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Publication number
GB2614408A
GB2614408A GB2216160.8A GB202216160A GB2614408A GB 2614408 A GB2614408 A GB 2614408A GB 202216160 A GB202216160 A GB 202216160A GB 2614408 A GB2614408 A GB 2614408A
Authority
GB
United Kingdom
Prior art keywords
loading
lever
model
steel
test box
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
Application number
GB2216160.8A
Other versions
GB202216160D0 (en
Inventor
Zhang Liting
Qi Ronghao
Wang Yukun
An Xipo
Zhang Shaoxiong
Wang Lizhai
Li Xin
Li Xiaoquan
Li Baoqi
Zhang Shouxing
Yang Jinhang
Li Dian
Wang Jizhong
Zhao Pengpeng
Zhang Lianxi
Li Jiandi
Xu Feifei
Zhou Zongzhi
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.)
Hebei Zhengtuo Geotechnical Eng Co Ltd
Shijiazhuang Tiedao University
Original Assignee
Hebei Zhengtuo Geotechnical Eng Co Ltd
Shijiazhuang Tiedao University
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 Hebei Zhengtuo Geotechnical Eng Co Ltd, Shijiazhuang Tiedao University filed Critical Hebei Zhengtuo Geotechnical Eng Co Ltd
Priority to GB2216160.8A priority Critical patent/GB2614408A/en
Publication of GB202216160D0 publication Critical patent/GB202216160D0/en
Publication of GB2614408A publication Critical patent/GB2614408A/en
Pending legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
    • G01M5/0025—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings of elongated objects, e.g. pipes, masts, towers or railways
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
    • G01M5/0041—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress
    • G01M5/005—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress by means of external apparatus, e.g. test benches or portable test systems
    • G01M5/0058—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress by means of external apparatus, e.g. test benches or portable test systems of elongated objects, e.g. pipes, masts, towers or railways
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
    • G01M5/0075—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by means of external apparatus, e.g. test benches or portable test systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
    • G01N3/14—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by dead weight, e.g. pendulum; generated by springs tension

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

The present disclosure discloses a model test box 13 with a multifunctional loading method. The model test box comprises a test box main body, a transverse loading device 18, an anti-compression loading rod and an anti-pulling loading rod. A slidable fixed pulley 2 is arranged on the left side of the test box main body. The device can complete a transverse loading test on a model pile 5 at any position in a model box. Two replaceable lever assemblies are slidably assembled at the upper end of the test box main body. A first lever assembly 9 (the anti-compression loading rod) can complete an anti-compression loading test on the model pile 5. A loading tray 6 used for stacking weights 4 and a sliding adjusting assembly used for being connected with the model box are respectively assembled at the two ends of the first lever assembly (the anti-compression loading rod).

Description

MODEL TEST BOX WITH MULTIFUNCTIONAL LOADING METHOD
TECHNICAL FIELD
The present disclosure relates to the technical field of civil engineering, in particular to a model test box with a multifunctional loading method
BACKGROUND ART
Constructional engineering is an important part of urban construction. As part of constructional engineering, foundation pit engineering has been widely used for various types of engineering piles, especially in the aspects of foundation pit support and foundation treatment. In order to explore the mechanical properties of different types of piles, relevant tests are indispensable. Considering that the field test is often expensive and has many uncontrollable factors, the indoor model pile test becomes one of optional and effective methods. In the indoor model pile test, a great number of methods to apply load to pile heads are generally generated by loading equipment and test devices.
SUMMARY
In view of disadvantages in the prior art, the present disclosure provides a model test box with a multifunctional loading method. The model test box can carry out transverse loading, anti-compression loading and anti-pulling loading tests on model piles located at different positions in the test box to solve the problem that in the prior art, only model piles at fixed positions can be tested and one model box can only carry out one type of tests.
In order to solve the above-mentioned technical problems that in the prior art, only model piles at fixed positions can be tested and one model box can only carry out one type of tests, the present disclosure provides the following technical solutions.
A model test box with a multifunctional loading method comprises a test box main body, a transverse loading device, a first anti-compression loading rod and a second anti-pulling loading rod, wherein the transverse loading device is slidably assembled on the left side of the test box main body; replaceable lever assemblies are slidably assembled at the upper end of the test box main body; a loading tray used for stacking weights and a sliding adjusting assembly used for being connected with a model box are respectively assembled at the two ends of the first replaceable lever assembly (the anti-compression loading rod); a sliding loading column is arranged in the middle of a lever; a supporting rod used for stabilizing and supporting the lever and a sliding adjusting assembly used for being connected with the model box are respectively assembled at the two ends of the second replaceable lever assembly (the anti-pulling loading rod); a slidable fixed pulley is arranged in the middle of the lever; through the transverse loading device, a model pile is connected with the loading tray through a steel strand, and transverse load calculation is directly carried out through the added weights; when the sliding loading column is connected with the model pile through a steel base plate by means of the first replaceable lever assembly (the anti-compression loading rod), the pressure is calculated through the force arm ratio of the first lever, and the model pile is connected with the loading tray through a steel strand by means of the fixed pulley in the transverse loading device through the second replaceable lever assembly (the anti-pulling loading rod), and the tension is calculated through the added weights.
Preferably, the transverse loading device is arranged at the left end of the test box main body and comprises a bracket with a clamping groove, a rotating support and a fixed pulley, wherein the rotating support is buckled in the bracket with a clamping groove, and the fixed pulley is fixed on the rotating support.
Preferably, the first replaceable lever assembly (the anti-compression loading rod) comprises a height-adjustable loading column, a sliding pipe, a first lever and sliding assemblies. A slideway is arranged at the lower part of the first lever in the first replaceable lever assembly (the anti-compression loading rod), a hanging ring is welded on the left side, a loading tray is hung on the first lever, the sliding adjusting assembly is fixed on the right side, and the sliding pipe is connected with the slideway of the first lever.
Preferably, the second replaceable lever assembly (the anti-pulling loading rod) comprises a fixed pulley, a rotating support, a second lever, a supporting rod and a sliding adjusting assembly (11) A slideway is arranged at the lower part of the second lever in the second replaceable lever assembly (the anti-pulling loading rod), a supporting rod is welded on the left side, a sliding adjusting assembly is fixed on the right side, and the fixed pulley is mounted below the rotating support and connected with the slideway at the lower part of the second lever.
Preferably, the sliding assemblies comprise a lifting lug, a steel plate and a steel column, the lifting lug is used for cooperating with the vertical rotation of the lever assemblies when being used, the steel plate is buckled onto the model box so as to slide horizontally, and the steel column is matched with a rear bolt to adjust the heights of the sliding assemblies.
Preferably, the test box main body comprises a box frame and the model box, the box frame comprises bases, steel channels, a stiffening beam and steel frames, the steel channels are welded on the two sides of the upper surfaces of the bases, the steel frames are welded on the upper surfaces of the steel channels, and the stiffening beam is welded below the steel frames.
The model box comprises an organic glass plate and a fixed steel plate, and the organic glass plate and the fixed steel plate are respectively fixed and assembled between the steel frames.
Compared with the prior art, the present disclosure provides a model test box with a multifunctional loading method, and the model test box has the following beneficial effects Firstly, according to the multi-functional loading model test box, the lateral loading test is carried out on model piles embedded at any position in foundation soil with the weight of weights through a pulley block and the sliding assemblies; through the anti-compression loading rod and the sliding adjusting assembly, the anti-compression loading test is carried out on the model piles embedded at any position in the foundation soil, and through the anti-pulling loading rod and the sliding adjusting assembly, the anti-pulling loading test is carried out on the model piles embedded at any position in the foundation soil. The problems that in the prior art, only model piles at fixed positions can be tested and one model box can only carry out one type of tests are solved.
Secondly, according to the multi-functional loading model test box, the extrusion force of the foundation soil at each position in the model box can be detected when the lateral loading, anti-compression loading and anti-pulling loading tests are carried out by a soil pressure sensor, and the destruction process of the foundation soil around the model piles when the model piles are stressed can be observed through the organic glass plate, so that workers can record test data comprehensively.
Thirdly, according to the multi-functional loading model test box, test soil is convenient for the workers to fill and sample by setting the removable glass plate, so that the layered compaction of the test soil and the later sampling of the soil are greatly facilitated.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a structural schematic diagram of an anti-compression loading device
for foundation piles in the present disclosure;
FIG. 2 is a schematic diagram of an anti-compression loading rod in the present disclosure; FIG. 3 is schematic diagram of a sliding adjusting assembly in the present
disclosure;
FIG. 4 is a structural schematic diagram of an anti-compression loading device with foundation piles in the present disclosure; FIG. 5 is a structural schematic diagram of an anti-pulling device with foundation piles in the present disclosure; FIG. 6 is a schematic diagram of an anti-pulling loading rod in the present
disclosure;
FIG. 7 is a plane sketch of an anti-pulling device in the present disclosure; and FIG. 8 is a structural schematic diagram of a test box main body in the present disclosure.
Reference signs: 1, organic glass plate; 2, fixed pulley; 3, rotating support; 4, weight; 5, model pile; 6, loading tray; 7, height-adjustable loading column; 8, sliding pipe; 9, first lever; 10, height-adjustable supporting rod; 11, sliding adjusting assembly; 12, box frame; 13, model box; 14, second lever; 15, steel base plate; 16, steel strand; 17, bracket; 18, transverse loading device; 19, lifting lug; 20, steel plate; 21, steel column; 22, base; 23, steel channel; 24, stiffening beam; 25, steel frame; and 26, fixed steel plate.
DETAILED DESCRIPTION OF THE EMBODIMENTS
The following clearly and completely describes the technical scheme in the embodiments of the present disclosure with reference to the attached figures in the embodiments of the present disclosure. Apparently, the described embodiments are merely a part rather than all of the embodiments of the present disclosure. All other embodiments obtained by those skilled in the art based on the embodiments of the present disclosure without creative efforts shall fall within the protection scope of the present
disclosure.
The present disclosure is a model test box with a multifunctional loading method. The structural diagram is as shown in FIG. 8. The model test box comprises a model box 13 formed by welding rectangular steel pipes and steel angles. The front face of the model box 13 is a detachable organic glass plate 1 with a thickness of 15 mm. The deformation and failure process of the soil can be visually observed in the test, and the loading and unloading of the soil in the box are also facilitated.
The model box 13 is provided with a transverse loading device, a first replaceable lever assembly (an anti-compression loading rod) and a second replaceable lever assembly (an anti-pulling loading rod) An anti-compression loading device for foundation piles, as shown in FIG. 2, comprises a first lever 9. The first lever 9 is hinged to the top end of the model box 13 through a sliding adjusting assembly 11. A sliding pipe 8 capable of sliding on the rod is arranged at the lower part of the first lever 9. A height-adjustable loading column 7 is arranged in the sliding pipe 8. A steel base plate 15 is arranged at the lower end of the height-adjustable loading column 7. The steel base plate 15 is placed on the model pile 5.
A loading tray 6 is arranged at the other end of the first lever 9. Weights 4 are placed on the loading tray 6. In the test, the rotatable height-adjustable loading column 7 and the sliding adjusting assembly 11 enable the first lever 9 to slide on the horizontal plane, and in cooperation with the sliding of the sliding pipe 8 on a second lever 9, the anti-compression loading test can be carried out on the model piles 5 placed anywhere. The situation that the traditional model box can only fix and load some foundation piles is changed.
The transverse loading device for foundation piles is as shown in FIG. 4. A rotating support 3 is arranged on a bracket 17 of the model box 13. A fixed pulley 2 is arranged on the rotating support 3. The fixed pulley 2 on the rotating support 3 can adjust the angle according to any placement position of the model pile 5 in the model box 13 and can be fixed. One end of a steel strand 16 is fixed on the model pile 5, and the other end of the steel strand 16 is turned vertically downwards through the fixed pulley 2.
Weights 4 are arranged at the end of the steel strand 16.
The anti-pulling device for foundation piles, as shown in FIG 5, comprises an anti-pulling loading rod. The detailed explanation of the anti-pulling loading rod is as shown in FIG. 6. The sliding adjusting assembly 11 is arranged at one end of the anti-pulling loading rod. The slidable rotating support 3 is arranged on the second lever 14.
The fixed pulley 2 is arranged below the rotating support 3, and the other end is connected to a height-adjustable supporting rod 10. The second lever 14 is hinged to the model box 13 through the sliding adjusting assembly 11, and the other end is connected to the model box 13 through the height-adjustable supporting rod 10. As shown in FIG. 7, a clamping groove is formed in the model box 13. The working principle of the whole anti-pulling device for foundation piles is that one end of the steel strand 16 is fixed on the model pile 5, the other end of the steel strand 16 is led out to turn vertically downwards through the fixed pulley 2 on the second lever 14 and the fixed pulley 2 on the model box 13, and weights 4 are arranged at the end of the steel strand 16. The device can realize the anti-pulling model test of the model pile 5 at any pile position in the model box 13.
Although the embodiments of the present disclosure have already been illustrated and described, various changes, modifications, replacements and transformations can be made by those skilled in the art under the condition of without departing from the principle and the spirit of the present disclosure, and thus the scope of the present disclosure should be restricted by claims and equivalents thereof

Claims (5)

  1. CLAIMSI. A model test box with a multifunctional loading method, comprising a test box main body, a transverse loading device (18), an anti-compression loading rod and an anti-pulling loading rod, wherein the transverse loading device (18) is slidably assembled on the left side of the test box main body, replaceable lever assemblies are slidably assembled at the upper end of the test box main body; a loading tray (6) used for stacking weights and a sliding adjusting assembly (11) used for being connected with a model box are respectively assembled at the two ends of the first replaceable lever assembly (the 16 anti-compression loading rod); a sliding loading column (7) is arranged in the middle of a first lever (9); a supporting rod (10) used for stabilizing and supporting the lever and a sliding adjusting assembly (11) used for being connected with the model box are respectively assembled at the two ends of the second replaceable lever assembly (the anti-pulling loading rod); a rotating support (3) is arranged in the middle of a second lever (14), and a slidable fixed pulley (2) is mounted below the rotating support (3); through the transverse loading device (18), a model pile (5) is connected with the loading tray (6) through a steel strand (16), and transverse load calculation is directly carried out through the added weights (4); when the sliding loading column (7) is connected with the model pile (5) through a steel base plate (15) by means of the first replaceable lever assembly (the anti-compression loading rod), the pressure is calculated through the force arm ratio of the first lever (9); and the model pile (5) is connected with the loading tray (6) through a steel strand (16) by means of the fixed pulley (2) in the transverse loading device (18) through the second replaceable lever assembly (the anti-pulling loading rod), and the tension is calculated through the added weights (4).
  2. 2. The model test box with a multifunctional loading method according to claim 1, wherein the transverse loading device (18) is arranged at the left end of the test box main body (13) and comprises a bracket (17) with a clamping groove, a rotating support (3) and a fixed pulley (2), the first replaceable lever assembly (the anti-compression loading rod) comprises a height-adjustable loading column (7), a sliding pipe (8), a first lever (9) and sliding assemblies (11); and the second replaceable lever assembly (the anti-pulling loading rod) comprises a fixed pulley (2), a rotating support (3), a supporting rod (10), a sliding adjusting assembly (11) and a second lever (14).
  3. 3. The model test box with a multifunctional loading method according to claim 2, wherein the rotating support (3) in the transverse loading device (18) is buckled in the bracket (17) with a clamping groove, and the fixed pulley (2) is fixed on the rotating support (3); the left side and the right side of the model test box are respectively connected to the model pile (5) and the loading tray (6), and the loading tray (6) is used for placing the weights (4); a slideway is arranged at the lower part of the first lever (9) in the first replaceable lever assembly (the anti-compression loading rod), a hanging ring is welded on the left side, a loading tray (6) is hung on the first lever (9), the sliding adjusting assembly (11) is fixed on the right side, and the sliding pipe (8) is connected with the slideway of the first lever (9); and a slideway is arranged at the lower part of the second lever (14) in the second replaceable lever assembly (the anti-pulling loading rod), a supporting rod (10) is welded on the left side, a sliding adjusting assembly (11) is fixed on the right side, and the fixed pulley (2) is mounted below the rotating support (3) and connected with the slideway at the lower part of the second lever (14).
  4. 4. The model test box with a multifunctional loading method according to claim 3, wherein the sliding assemblies (11) comprise a lifting lug (19), a steel plate (20) and a steel column (21), the lifting lug (19) is used for cooperating with the vertical rotation of the lever assemblies when being used, the steel plate (20) is buckled onto the model box (13) so as to slide horizontally, and the steel column (21) is matched with a rear bolt to adjust the heights of the sliding assemblies (11).
  5. 5. The model test box with a multifunctional loading method according to claim 1, wherein the test box main body comprises a box frame (12) and the model box (13), the box frame (12) comprises bases (22), steel channels (23), a stiffening beam (24) and steel frames (25), the steel channels (23) are welded on the two sides of the upper surfaces of the bases (22), the steel frames (25) are welded on the upper surfaces of the steel channels (23), and the stiffening beam (24) is welded below the steel frames (25); the model box (13) comprises an organic glass plate (1) and a fixed steel plate (16), and the organic glass plate (1) and the fixed steel plate (16) are respectively fixed and assembled between the steel frames (25)
GB2216160.8A 2022-10-31 2022-10-31 Model test box with multifunctional loading method Pending GB2614408A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2216160.8A GB2614408A (en) 2022-10-31 2022-10-31 Model test box with multifunctional loading method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2216160.8A GB2614408A (en) 2022-10-31 2022-10-31 Model test box with multifunctional loading method

Publications (2)

Publication Number Publication Date
GB202216160D0 GB202216160D0 (en) 2022-12-14
GB2614408A true GB2614408A (en) 2023-07-05

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GB2216160.8A Pending GB2614408A (en) 2022-10-31 2022-10-31 Model test box with multifunctional loading method

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117890425B (en) * 2024-03-14 2024-05-28 四川水发勘测设计研究有限公司 Concrete placement heat dissipation test device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110954417A (en) * 2019-11-18 2020-04-03 同济大学 Test device for simulating multidirectional coupling cyclic loading of anchor pile system
CN212514042U (en) * 2019-12-20 2021-02-09 扬州大学 Vertical loading test device of indoor model pile
CN114541496A (en) * 2022-04-22 2022-05-27 石家庄铁道大学 Anti-pulling loading model test box

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110954417A (en) * 2019-11-18 2020-04-03 同济大学 Test device for simulating multidirectional coupling cyclic loading of anchor pile system
CN212514042U (en) * 2019-12-20 2021-02-09 扬州大学 Vertical loading test device of indoor model pile
CN114541496A (en) * 2022-04-22 2022-05-27 石家庄铁道大学 Anti-pulling loading model test box

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