CN219364549U - Multi-point combined load test device - Google Patents
Multi-point combined load test device Download PDFInfo
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- CN219364549U CN219364549U CN202320332382.2U CN202320332382U CN219364549U CN 219364549 U CN219364549 U CN 219364549U CN 202320332382 U CN202320332382 U CN 202320332382U CN 219364549 U CN219364549 U CN 219364549U
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- jack
- test
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- buttress
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The utility model discloses a multipoint combined load test device which comprises a central buttress and four side buttresses arranged in a cross manner, wherein a load test point is arranged on a foundation to be tested and positioned at the middle position between the side buttresses and the central buttress; a bearing plate for transmitting load to the foundation is arranged above the load test point, and a jack is arranged above the bearing plate; a pressure sensing mechanism is arranged between the bearing plate and the jack; a displacement sensor is arranged at the top of the jack; an anti-weight beam is respectively arranged above each side buttress and the central buttress, and a balancing weight is arranged above the anti-weight beam; the utility model reduces single-point counterweight, can test a plurality of test points at the same time, reduces test times, saves test time and cost, provides enough field test data for building design and engineering acceptance to judge the uniformity of the foundation, and widens the application range of the existing test method.
Description
Technical Field
The utility model relates to the technical field of engineering geological investigation, in particular to a load test device for parameters such as bearing capacity, foundation bed coefficient, deformation modulus and the like of undisturbed foundation soil and treated foundation soil.
Background
The load test is an in-situ test for applying a vertical load to a foundation through a bearing plate on a natural foundation and observing deformation and strength rules of the foundation soil under study. The load test can directly measure mechanical parameters such as bearing capacity of foundation soil of a building, provides basis for design and engineering acceptance of various buildings, and has wide application in engineering, and generally comprises a shallow load test, a deep load test and a spiral plate load test.
The test utilizes various methods to simulate the actual working state of the foundation or the foundation by manual loading, and tests the bearing performance and deformation characteristics of the foundation or the foundation after loading.
Because the existing load test device is heavy, the operation is complex, the data obtained by a single test is less, the non-uniformity of the foundation cannot be judged, multiple tests are needed, the scale of the multiple tests is relatively large, and the test cost is high.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a multi-point combined load test device which can test three or more test points simultaneously, reduce test times, save test time and cost and provide enough field test data for architectural design and engineering acceptance.
In order to solve the technical problems, the technical scheme adopted by the utility model is as follows.
The multipoint combined load test device comprises a central buttress and four side buttresses arranged in a cross manner, wherein the central buttress and the four side buttresses are all erected on a foundation, and the central buttress is positioned at the central position of a connecting line of the four side buttresses; a load test point for measurement is arranged on the foundation to be detected at the middle position between the side buttress and the center buttress; a bearing plate for transmitting load to the foundation is arranged above the load test point, and a jack for supporting and playing a role is supported above the bearing plate; a pressure sensing mechanism for measuring the applied load is arranged between the bearing plate and the jack; the top of the jack is provided with a displacement sensor for measuring the expansion and contraction amount of the jack; and a counter weight beam is respectively arranged above each side buttress and the central buttress, a balancing weight matched with the jack and used for applying load is arranged above the counter weight beam, and the balancing weight is stacked above the counter weight beam.
According to the multipoint combined load test device, the bearing plate is a square rigid plate, and the area of the bearing plate is set to be 0.09 square meter.
According to the multipoint combined load test device, the centers of the load test point, the bearing plate, the jack and the counter weight cross beam are required to be on the same vertical line.
By adopting the technical scheme, the utility model has the following technical progress.
The multipoint combined load test device provided by the utility model reduces single-point counterweights, can test a plurality of test points at the same time, reduces test times, obtains more test data, saves test time and cost, provides enough field test data for building design and engineering acceptance to judge the uniformity of a foundation, and widens the application range of the existing test method.
Drawings
FIG. 1 is a schematic plan view of the present utility model;
fig. 2 is a schematic elevation view of the present utility model.
Wherein: 1. the side buttresses, 2, the center buttresses, 3, the counter weight cross beam, 4, the jack, 5, the bearing plate, 6, the balancing weight and 7, the load test point.
Detailed Description
The utility model will be described in further detail with reference to the drawings and the detailed description.
The multi-point combined load test device comprises a central buttress 2 and four side buttresses 1 which are arranged in a cross shape, wherein a load test point 7 for measurement is arranged on the ground to be tested and positioned at the middle position between the central buttress 2 and the side buttresses 1, and a bearing plate 5 for transmitting load to a foundation is arranged above the center of the load test point 7; and a counter weight beam 3 is respectively arranged above each side buttress and the central buttress, and a balancing weight 6 for applying load is arranged above the counter weight beam 3.
The central buttress 2 and the four side buttresses 1 are erected on foundation soil, and as shown in fig. 1, the central buttress 2 is positioned at the central position of the connecting line of the four side buttresses 1.
The bearing plate 5 above the load test point 7 is a square rigid plate, and the area of the bearing plate 5 is set to be 0.09 square meters.
The center position of the bearing plate 5 is provided with a pressure sensing mechanism for measuring the applied load, a jack 4 for supporting and playing a role is supported above the pressure sensing mechanism, and as shown in fig. 2, the jack 4 applies load to a load test point 7 below the bearing plate 5 through cooperation with a balancing weight 6.
The top of jack 4 is provided with the displacement sensor of monitoring jack 4 flexible volume, and jack 4 can appear the flexible change of certain degree under the pressure action of balancing weight 6, measures the flexible volume of jack 4 on every test point through the displacement sensor that sets up at jack 4 top, realizes the judgement to the degree of consistency of ground.
The centers of the bearing plate 5, the jack 4, the load test point 7 and the counter weight cross beam 3 are required to be ensured to be on the same vertical line.
The balancing weights 6 are stacked above the counter weight cross beam 3, the balancing weights 6 have a certain weight, and the number of the balancing weights 6 can be increased or reduced according to test requirements.
The installation and use steps of the utility model are as follows:
the first step, the center buttress 2 and the four edge buttresses 1 are vertically erected on foundation soil for fixation;
secondly, respectively paving bearing plates 5 at the centers of load test points 7 at the middle positions of the side buttresses 1 and the center buttresses 2, arranging a pressure sensing mechanism above the bearing plates 5, and supporting a jack 4 above the pressure sensing mechanism;
thirdly, respectively erecting four anti-weight cross beams 3 above the central buttress 2 and the four edge buttresses 1, and ensuring that the central positions of the anti-weight cross beams 3 are aligned with the central positions of the jacks 4 and the bearing plates 5;
step four, gradually adding a balancing weight 6 above the anti-weight beam 3 according to test requirements, recording the applied load through a pressure sensor mechanism below the jack 4, and simultaneously measuring the expansion and contraction amount of the jack 4 in the test process to finish recording and collecting data;
and fifthly, four groups of data can be obtained in each test, after the data are checked to be abnormal, parameters such as the bearing capacity, the foundation bed coefficient and the deformation modulus of each load test point 7 are calculated according to the collected data, then the average value of 4 test values is taken as the bearing capacity, the foundation bed coefficient and the deformation modulus of a field, the uniformity of the foundation is judged according to the average value, and meanwhile, the possibility of differential settlement under the test condition can be judged according to the four groups of data.
The multipoint combined load test device provided by the utility model reduces single-point counterweights, can test a plurality of test points at the same time, reduces test times, obtains more test data, saves test time and cost, provides enough field test data for building design and engineering acceptance to judge the uniformity of a foundation, and widens the application range of the existing test method.
Claims (3)
1. A multipoint joint load test device is characterized in that: the foundation pile comprises a central buttress (2) and four side buttresses (1) which are arranged in a cross manner, wherein the central buttress (2) and the four side buttresses (1) are all erected on a foundation, and the central buttress (2) is positioned at the central position of a connecting line of the four side buttresses (1); a load test point (7) for measurement is arranged on the foundation to be detected at the middle position between the side buttress (1) and the center buttress (2); a bearing plate (5) for transmitting load to the foundation is arranged above the load test point (7), and a jack (4) for supporting and playing a role is supported above the bearing plate (5); a pressure sensing mechanism for measuring the applied load is arranged between the bearing plate (5) and the jack (4); the top of the jack (4) is provided with a displacement sensor for measuring the expansion and contraction amount of the jack (4); and a counter weight beam (3) is respectively arranged above each side buttress (1) and the central buttress (2), a balancing weight (6) matched with the jack (4) for applying load is arranged above the counter weight beam (3), and the balancing weight (6) is stacked above the counter weight beam (3).
2. The multi-point joint load test device according to claim 1, wherein: the bearing plate (5) is a square rigid plate, and the area of the bearing plate (5) is set to be 0.09 square meter.
3. The multi-point joint load test device according to claim 1, wherein: the centers of the load test point (7), the bearing plate (5), the jack (4) and the counter weight cross beam (3) are required to be on the same vertical line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320332382.2U CN219364549U (en) | 2023-02-28 | 2023-02-28 | Multi-point combined load test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320332382.2U CN219364549U (en) | 2023-02-28 | 2023-02-28 | Multi-point combined load test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219364549U true CN219364549U (en) | 2023-07-18 |
Family
ID=87116172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320332382.2U Active CN219364549U (en) | 2023-02-28 | 2023-02-28 | Multi-point combined load test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219364549U (en) |
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2023
- 2023-02-28 CN CN202320332382.2U patent/CN219364549U/en active Active
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