CN103454103B - Loading device for geotechnical engineering large-sized three-dimensional comprehensive simulation test bed - Google Patents
Loading device for geotechnical engineering large-sized three-dimensional comprehensive simulation test bed Download PDFInfo
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- CN103454103B CN103454103B CN201310290041.4A CN201310290041A CN103454103B CN 103454103 B CN103454103 B CN 103454103B CN 201310290041 A CN201310290041 A CN 201310290041A CN 103454103 B CN103454103 B CN 103454103B
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- 230000003014 reinforcing effect Effects 0.000 claims description 9
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- 239000004567 concrete Substances 0.000 claims description 3
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 101150054854 POU1F1 gene Proteins 0.000 description 20
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Abstract
Provided is a loading device for a geotechnical engineering large-sized three-dimensional comprehensive simulation test bed. The loading device for the geotechnical engineering large-sized three-dimensional comprehensive simulation test bed comprises reaction walls and reaction beams, wherein the reaction walls are made of reinforced concrete, and are of a double-layer structure, a personnel operation channel is arranged between the double-layer reaction walls, a control pipeline penetrates into the position between the double-layer reaction walls through reserved horizontal installing holes formed in the reaction walls, and is connected to a control room of a ground test building, and the reaction beams stretch across the geotechnical engineering large-sized three-dimensional comprehensive simulation test bed, are arranged on the upper end faces of the reaction walls, and are fixedly connected with the reaction walls. The loading device for the geotechnical engineering large-sized three-dimensional comprehensive simulation test bed can achieve real three-dimensional loading, and can be used for simulation of geotechnical tests with different functions, such as an underground space and an excavation simulation test of the underground space, a foundation and slope engineering simulation test under the conditions of rain and rise and fall of the underground water level, a dynamic response test of a pile foundation and soil around a pile, a duct piece simulation test and a structural component performance test.
Description
Technical Field
The invention relates to a physical model test device for geotechnical engineering such as tunnels, subway stations, foundation engineering, slope engineering, soil retaining structures and the like, in particular to a test platform capable of carrying out three-dimensional comprehensive simulation test on large-scale geological models, and particularly relates to a loading device for a large-scale three-dimensional comprehensive simulation test bed for geotechnical engineering.
Background
The physical model test is an important means for researching large geotechnical engineering problems, is widely applied at home and abroad, and plays an important role in engineering research and design. Scholars at home and abroad carry out highly effective research work aiming at engineering problems of the stability of surrounding rocks of a roof of a large mine, the stability of rocks of a dam body and a dam foundation, the stability and the support of surrounding rocks of a large chamber and the like, and develop matched model test equipment with different scales.
The existing various test devices for physical model tests are usually specially designed and developed aiming at specific engineering, can only simulate a certain type of underground engineering, and have no universality. Moreover, for geotechnical engineering model experiments, the geometric similarity ratio of the experimental model is a key technical index. The geometric similarity ratio is too small, so that experimental materials can be saved, but the arrangement of the sensors is limited by the too small model amount, and compared with a larger model, the sensor is more easily interfered by external factors, so that the experimental result is influenced. Therefore, a larger geometric similarity ratio of the model should be used as much as possible when conditions permit, and in this case, the complexity of the model experiment itself is increased accordingly. For example, large scale model experiments require large amounts of similar materials; when a complex working condition with large burial depth is simulated, a loading system with large tonnage, a reaction system with large rigidity and the like are needed. With the increasing scale of geotechnical engineering, the occurring engineering problems are more complicated, and the existing model test equipment can not well meet the requirements of engineering practice.
In the following description of the present invention, the three-dimensional comprehensive simulation test refers to a physical model test that can perform true triaxial loading, and perform different functions such as a simulation test of underground space and excavation thereof, a simulation test of foundation and slope engineering under rainfall and groundwater level elevation conditions, a dynamic response test of pile foundation and soil around the pile, a segment simulation test, and a structural component performance test. The maximum size of the model can reach 10m multiplied by 6m (length multiplied by width multiplied by height), and the size is much larger compared with the test scale of the model in the prior art, so that the test bed of the invention belongs to a large-scale test platform compared with the prior art.
Chinese patent CN202033951U provides a geotechnical engineering physical simulation testing machine, which adopts a steel frame structure placed on the ground, and can be used for geomechanical model tests on cavern and cavern slope, but can only load the model in four directions, up, down, left and right, and cannot load the model in true triaxial. Moreover, the testing machine is placed on the ground, is small in scale and cannot be used for large-scale physical model tests.
Chinese patent CN100535267C provides a model test platform for foundation and slope engineering, the model box of the test platform disclosed in this patent is a steel structure with closed periphery placed on the ground, although it can perform large-size model test, it can only load the top of the model, and at the same time it can not be used for physical model test of excavation engineering such as tunnel and subway station.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a loading device for a large-scale three-dimensional comprehensive simulation test bed for geotechnical engineering, so as to reduce or avoid the problems mentioned above.
Specifically, the invention provides a loading device for a geotechnical engineering large-scale three-dimensional comprehensive simulation test bed, which at least comprises the loading device and a model box, wherein the loading device comprises a counterforce wall for providing horizontal loading force and a counterforce beam for providing vertical loading force;
the counterforce wall is made of reinforced concrete and surrounds four peripheries of a foundation pit excavated from the ground; the reaction walls are of a double-layer structure, cross braces and personnel operation channels are arranged between the double-layer reaction walls, and control pipelines of the horizontal loading oil cylinders penetrate between the double-layer reaction walls through horizontal mounting holes reserved on the reaction walls and are connected into a control room of the ground test building;
the reaction beam is arranged on the upper end surface of the reaction wall across the geotechnical engineering large-scale three-dimensional comprehensive simulation test bed and is fixedly connected with a steel structure component poured in concrete of the reaction wall;
the periphery and the top of the model box are formed by splicing a plurality of loading plates, and the bottom of the model box and the foundation pit share the bottom reinforced concrete ground; a plurality of reserved horizontal mounting holes are uniformly distributed on the inner side reaction wall; each horizontal loading plate is connected with a horizontal loading oil cylinder through a spherical joint, and the horizontal loading oil cylinder is fixedly connected with the reaction wall through a connecting bolt arranged in the horizontal mounting hole; each vertical loading plate is connected with a vertical loading oil cylinder through a spherical joint, and each vertical loading oil cylinder is fixedly connected with the counter-force beam through a connecting bolt;
bolt holes are reserved between the side faces of the adjacent horizontal loading plates, and bolt connection can be carried out according to test requirements.
Preferably, the horizontal loading plate is provided with a panel which is in contact with the model, the periphery of the panel is provided with a side plate which is perpendicular to the panel, the panel and the side plate are connected through a reinforcing rib plate, the reinforcing rib plate is provided with two diagonal rib plates, two middle rib plates and a surrounding rib plate which is arranged in parallel with the side plate, and the middle part of the reinforcing rib plate is provided with a connecting plate.
The invention provides a loading device for a large-scale three-dimensional comprehensive simulation test bed for geotechnical engineering, which can be used for physical model tests with different functions, such as underground space and excavation simulation tests thereof, foundation and side slope engineering simulation tests under rainfall and underground water level lifting conditions, dynamic response tests of pile foundations and soil around piles, segment simulation tests, structural component performance tests and the like, and meanwhile, the loading device can be applied to realize true three-dimensional loading on large-scale physical models.
Drawings
The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention. Wherein,
FIG. 1 is a schematic perspective view illustrating a geotechnical engineering large-scale three-dimensional comprehensive simulation test bed according to an embodiment of the present invention;
FIG. 2 shows a cross-sectional view of FIG. 1;
FIG. 3 shows a schematic longitudinal cross-sectional view of FIG. 1;
FIG. 4 shows a schematic top view of a mold box according to an embodiment of the invention;
FIG. 5 is an enlarged schematic view of the position B of FIG. 4;
FIG. 6 is an enlarged, exploded view of the horizontal load plate and the horizontal load cylinder connected thereto;
fig. 7 is a perspective view of a horizontal loading plate.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings. Wherein like parts are given like reference numerals.
Fig. 1 is a schematic perspective view showing a three-dimensional structure of a geotechnical engineering large-scale comprehensive simulation test bed according to an embodiment of the present invention, which roughly shows the general structure of the geotechnical engineering large-scale comprehensive simulation test bed of the present invention, and emphasizes the main differences from the prior art mentioned in the background section.
Referring to fig. 1, a significant difference between the geotechnical engineering large-scale three-dimensional comprehensive simulation test bed of the present invention and the prior art is that a main body of the geotechnical engineering large-scale three-dimensional comprehensive simulation test bed of the present invention is disposed in a foundation pit 1 excavated on the ground (see fig. 2 and 3), wherein a portion denoted by reference numeral 11 of fig. 1 is the ground, and a portion denoted by reference numeral 12 is the bottom of the foundation pit 1. Fig. 2 shows a cross-sectional view of fig. 1, fig. 3 shows a cross-sectional view of fig. 1 in a longitudinal direction, but fig. 2 and 3 are sketched and, of course, similar to fig. 1, only used for reading understanding by those skilled in the art.
As shown in fig. 1 to 3, the geotechnical engineering large-scale three-dimensional comprehensive simulation test bed of the present invention generally comprises an underground part located in a foundation pit 1 and an above-ground part disposed around the foundation pit 1, wherein the underground part is a main structure of a test platform and includes at least a loading device 2 and a mold box 3 (the mold box 3 is not shown in fig. 1 to 3, see fig. 4), wherein the loading device 2 includes a counterforce wall 21 providing a horizontal loading force and a counterforce beam 22 providing a vertical loading force. That is, the geotechnical engineering large-scale three-dimensional comprehensive simulation test bed of the present invention includes at least a reaction wall 21 for providing a horizontal loading force, a reaction beam 22 for providing a vertical loading force, and a mold box 3.
Wherein, the counterforce wall 21 is made of reinforced concrete and surrounds four peripheries of a foundation pit 1 excavated from the ground; a ground test building 13 (a part of which is shown in fig. 1, and the specific structure of which is shown in fig. 2 and 3) is arranged on the ground 11 surrounding the foundation pit 1, and the top of the ground test building 13 is provided with a movable crane 14 crossing the foundation pit 1; one side of the foundation pit 1 is provided with a material conveying elevator shaft 15 communicated with the ground 11; a test channel 16 is arranged on the counterforce wall 21 at one side corresponding to the material conveying elevator shaft 15, and the test channel 16 is communicated with the material conveying elevator shaft 15.
Two reaction beams 22 shown in fig. 1 are provided on the upper end surface of the reaction wall 21, and are fixedly connected to a steel structural member (not shown) poured into the concrete of the reaction wall 21. The mold box 3 is provided in a space surrounded by the reaction wall 21 and the reaction beam 22.
The reaction beams 22 are used for loading the top of the model, only two reaction beams 22 are shown in fig. 1, only one reaction beam 22 is shown in fig. 3, fig. 1-3 are only schematic, in actual use, a plurality of reaction beams 22 can be arranged according to the size of the model box 3 and the top pressure to be borne, and two ends of each reaction beam 22 are connected with the top of each reaction wall 21 through bolts.
As can be seen from the above, the geotechnical engineering large-scale three-dimensional comprehensive simulation test bed of the present invention is significantly different from the prior art in that the test part, i.e., the loading device 2, of the geotechnical engineering large-scale three-dimensional comprehensive simulation test bed of the present invention is mainly disposed underground, whereas the existing test platforms are disposed on the ground. The invention arranges the components which mainly apply force and bear force, mainly the counterforce wall 21 and the auxiliary reinforced concrete structure thereof, in the underground foundation pit 1 and leans against the periphery of the foundation pit 1, so that the components which apply force and bear force are firmly embedded underground during the test, and the counterforce wall 21 can be ensured to have enough strength and rigidity. In addition, since the reaction walls 21 are disposed around the four peripheries of the foundation pit 1 excavated from the ground and are connected to each other in a surrounding manner, when forces are simultaneously applied to the mold box through the four sides of the reaction walls 21, the reaction forces applied to the opposite reaction walls 21 can be cancelled out to form a self-balancing system. Moreover, because the reaction wall 21 and the reinforced concrete structure attached to the reaction wall are backed against the four sides of the foundation pit 1, the soil around the test platform can exert a certain reaction force on the reaction wall, so that the deformation of the reaction wall can be effectively reduced, and the anti-overturning capability of the test platform can be obviously improved.
On the other hand, the counterforce wall 21 is arranged in the underground foundation pit 1, so that the ground space is saved, and meanwhile, in the test process, a tester provides test assistance and observes the test process from the ground.
The geotechnical engineering large-scale three-dimensional comprehensive simulation test bed has another remarkable characteristic of large structure size, the maximum model size in the geotechnical engineering large-scale three-dimensional comprehensive simulation test bed can reach 10m multiplied by 6m (length multiplied by width multiplied by height), and compared with the model test scale in the prior art, the geotechnical engineering large-scale three-dimensional comprehensive simulation test bed is relatively much larger in size, and is convenient for model tests of various different projects and different working conditions. In order to solve the problem of large scale, the invention not only arranges the main test structure underground, but also correspondingly carries out further structural improvement, for example, a loading device with large rigidity is provided by the reaction wall 21 of the double-layer prestressed reinforced concrete structure, thereby providing a loading system with large tonnage.
In addition, the transfer of the model material can become particularly difficult for large scale experiments. Because the geotechnical engineering large-scale three-dimensional comprehensive simulation test bed is arranged in a fixed building, the geotechnical engineering large-scale three-dimensional comprehensive simulation test bed cannot hoist and convey materials by using movable equipment such as a crane when the materials need to be loaded like the conventional open type steel frame structure, and therefore, the geotechnical engineering large-scale three-dimensional comprehensive simulation test bed is provided with a movable crane 14 crossing the foundation pit 1 at the top of a ground test building 13 surrounding the foundation pit 1 and used for conveying the materials through a lifting hook or a grab bucket. In addition, in order to facilitate the arrangement and installation of the test equipment for personnel to enter and exit the foundation pit 1, a material conveying elevator shaft 15 is further arranged on one side of the foundation pit 1 and used for conveying personnel or small-sized test equipment and model materials through the elevator shaft 15. Further, since a large amount of model material is required for a large scale test, in one embodiment, a conveyor 17 for conveying the model material into the model box is further provided at an upper portion of the pit 1. Obviously, the arrangement of the structures is an improvement provided for meeting the large-scale model test, and in the prior art, for an open-type test platform on the ground, structures such as a material conveying elevator shaft 15, a conveyor belt 17, a crane 14 arranged at the top of a ground test building 13 and the like are not needed.
In order to install the structure such as the horizontal loading actuator for providing the horizontal loading force shown in fig. 4, a plurality of horizontal loading holes 23 are uniformly distributed on one side wall of each of the reaction walls 21 at the four peripheries of the foundation pit 1, which faces the interior of the foundation pit 1; as can be seen from fig. 2 and 3, the horizontal loading holes 23 are partly through holes and partly blind holes, and the distribution of the through holes and the blind holes is designed in advance according to the experimental needs. It will be understood by those skilled in the art that when the horizontal loading hole 23 is a through hole, it may also be used to route electrical cables, water pipes, sensor cables, oil pipelines, etc.
As shown in fig. 4, there is shown a schematic top view of a mold box 3 according to an embodiment of the present invention, wherein the mold box 3 can be spliced into four peripheries of the mold box 3 by a plurality of horizontal loading plates 31, and likewise, a plurality of vertical loading plates are spliced into a top of the mold box, and a bottom of the mold box 3 shares a bottom reinforced concrete floor with the geotechnical large-scale integrated simulation test bed, similarly to the top view of the mold box 3 shown in fig. 4.
Each horizontal loading plate 31 is connected with a horizontal loading actuator 32, and the horizontal loading actuator 32 is fixedly connected with the reaction wall 21 through a connecting bolt arranged in the horizontal loading hole 23; similarly to the top view of mold box 3 shown in fig. 4, a vertical loading actuator is connected to each vertical loading plate, and each vertical loading actuator is fixedly connected to reaction beam 22 by a connecting bolt. The structure in which the horizontal loading plate 31 and the horizontal loading oil tank 32 are connected by a spherical joint can be seen in an enlarged view shown in fig. 6.
Regarding the structure of mold box 3, the biggest difference from the prior art is that mold box 3 is formed by splicing a plurality of horizontal loading plates 31 and vertical loading plates, and the arrangement is to meet the requirements of mold tests with different scales and different loading modes. For example, for models with different sizes, loading plates with different sizes need to be provided, and by adopting the loading plate splicing structure, loading plate combinations with different sizes can be easily spliced, so that the requirements of model tests with different sizes are met.
Because the model box 3 is formed by splicing a plurality of loading plates, before the model is manufactured, the horizontal loading plates 31 can be only arranged on three sides of the model box 3, the loading plates close to one side of the test channel 16 can be not arranged, then the conveyor belt 17 is arranged at the test channel 16, so that the model material can be conveyed to the ground by the elevator 15 and then directly conveyed into the space of the model box 3 through the conveyor belt 17, the soil layers are arranged in layers according to the design, the loading plates close to one side of the test channel 16 are arranged in layers, and the adjustment and the transportation of the model material on the upper layer can be carried out by installing a grab bucket machine on a crane until the whole test body is formed.
On the other hand, the invention adopts a structure of splicing loading plates, each loading plate is provided with an independent loading oil cylinder, and a mechanical loading model in any combination form can be provided by matching with each loading plate, which is similar to the prior arts of CN100535267C and CN202033951U mentioned in the background art, however, although the prior arts provide a plurality of loading oil cylinders, the loading plates are of an integral structure, and flexible loading cannot be realized according to different model tests.
In addition, in a preferred embodiment, the reaction walls 21 are of a double-layer structure, the cross braces and the personnel operating channels 211 are arranged between the double-layer reaction walls 21, and the control lines of the horizontal loading actuators penetrate between the double-layer reaction walls 21 through the horizontal loading holes 23 reserved on the reaction walls 21 and are connected into the control room of the ground test building 13. The arrangement is to meet the requirement of large-scale model test, on one hand, a counterforce wall 21 with larger rigidity is provided, and on the other hand, personnel access installation and debugging equipment can be provided.
FIG. 5 is an enlarged schematic view of the position B of FIG. 4; in a preferred embodiment, the sealing rubber strips 311 are embedded on the side surfaces of the adjacent horizontal loading plates 31, that is, a sealing groove is milled on the periphery of the horizontal loading plate 31, and then the sealing rubber strips 311 are embedded. In this way, the sealing performance between the splicing loading plates of the mold box 3 can be ensured, and similarly, sealing rubber strips can be embedded between the side surfaces of the adjacent vertical loading plates. In addition, as can be seen from fig. 5, bolt holes are formed between the side surfaces of the adjacent horizontal loading plates 31, and also similar to the structure of fig. 6, bolt holes may be formed between the side surfaces of the adjacent vertical loading plates. The arrangement is that the side surfaces of the adjacent horizontal loading plates are connected through bolts when the test is needed, so that the horizontal loading plates 31 are in a vertical state and are arranged orderly side by side, and the horizontal loading plates can be loaded and moved synchronously.
While fig. 6 shows an enlarged, exploded view of the horizontal load plate 31 and the horizontal load cylinder 32 connected thereto, it will be appreciated by those skilled in the art that the related structure is also applicable to the vertical load plate and vertical load cylinder structures in practice.
Specifically, each horizontal loading plate 31 is connected to a horizontal loading cylinder 32 through a spherical joint 34, and the horizontal loading cylinder 32 is fixedly connected to the reaction wall 21 through a connecting bolt disposed in the horizontal mounting hole 23. The horizontal and vertical positions of each loading plate can be adjusted by using the spherical joints 34 before loading, and the horizontal loading plates 31 are ensured to be in a vertical state and to be arranged orderly side by side, so that the horizontal loading plates can be synchronously loaded and moved.
Fig. 7 is a schematic perspective view showing a horizontal load plate, in which structures such as a connection groove of a joint strip 311 are omitted, and related structures can be seen from fig. 5, the horizontal load plate 31 has a face plate 312 which contacts a model, the periphery of the face plate 312 has a side plate 313 perpendicular to the face plate, the face plate 312 and the side plate 313 are connected by a reinforcing rib plate 314, the reinforcing rib plate 314 has two diagonal rib plates 3141, two middle rib plates 3142 and a surrounding rib plate 3143 arranged parallel to the side plate, and the middle of the reinforcing rib plate 314 has a connection plate 315.
As shown in fig. 6, the horizontal loading plate 31 is connected to the horizontal loading cylinder 32 through a spherical joint 34, wherein a spherical joint connection seat 3151 is connected to the connection plate 315, the spherical joint connection seat 3151 is opposite to the spherical joint base 344, and clamps the spherical joint 34 therebetween, one end of the fixing member 341 is fixedly connected to the spherical joint connection seat 3151 through a bolt, and the other end is fixedly connected to the spherical joint base 344 through a bolt.
Similar to the structure of fig. 7, the vertical loading plate may also have similar structures and functions as described above, and will not be described in detail herein.
The invention provides a loading device for a large-scale three-dimensional comprehensive simulation test bed for geotechnical engineering, which can be used for geotechnical test simulation with different functions such as underground space and excavation simulation test thereof, foundation and side slope engineering simulation test under rainfall and underground water level lifting conditions, dynamic response test of pile foundation and soil around the pile, segment simulation test, structural component performance test and the like, and meanwhile, can realize true three-dimensional loading and can perform large-scale physical model test.
It should be appreciated by those of skill in the art that while the present invention has been described in terms of several embodiments, not every embodiment includes only a single embodiment. The description is given for clearness of understanding only, and it is to be understood that all matters in the embodiments are to be interpreted as including technical equivalents which are related to the embodiments and which are combined with each other to illustrate the scope of the present invention.
The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent alterations, modifications and combinations can be made by those skilled in the art without departing from the spirit and principles of the invention.
Claims (2)
1. The utility model provides a loading device for large-scale three-dimensional comprehensive simulation test platform of geotechnical engineering, large-scale three-dimensional comprehensive simulation test platform of geotechnical engineering includes loading device and mold box at least, loading device is including the counter-force wall that provides horizontal loading power and the counter-force roof beam that provides perpendicular loading power, its characterized in that:
the counterforce wall is made of reinforced concrete and surrounds four peripheries of a foundation pit excavated from the ground; the reaction walls are of double-layer structures, personnel operation channels are arranged between the double-layer reaction walls, and control pipelines of the horizontal loading oil cylinder penetrate between the double-layer reaction walls through horizontal mounting holes reserved on the reaction walls and are connected into a control room of the ground test building;
the reaction beam is arranged on the upper end surface of the reaction wall across the geotechnical engineering large-scale three-dimensional comprehensive simulation test bed and is fixedly connected with a steel structure component poured in concrete of the reaction wall;
the model box is formed by splicing a plurality of horizontal loading plates into four peripheries of the model box, a plurality of vertical loading plates are spliced into the top of the model box, and the bottom of the model box and the foundation pit share the bottom reinforced concrete ground; a plurality of reserved horizontal mounting holes are uniformly distributed on one side wall of each reaction wall at the four peripheries of the foundation pit, which faces the interior of the foundation pit; each horizontal loading plate is connected with a horizontal loading oil cylinder through a spherical joint, and the horizontal loading oil cylinder is fixedly connected with the reaction wall through a connecting bolt arranged in the horizontal mounting hole; each vertical loading plate is connected with a vertical loading oil cylinder through a spherical joint, and each vertical loading oil cylinder is fixedly connected with the counter-force beam through a connecting bolt;
the side surfaces of the adjacent horizontal loading plates are connected through bolts.
2. The loading device according to claim 1, wherein the horizontal loading plate has a face plate contacting the model, the face plate has a side plate perpendicular to the face plate at the periphery, the face plate and the side plate are connected by a reinforcing rib plate, the reinforcing rib plate has two diagonal rib plates, two middle rib plates and a surrounding rib plate arranged parallel to the side plate, and a connecting plate is arranged at the middle part of the reinforcing rib plate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310290041.4A CN103454103B (en) | 2013-07-11 | 2013-07-11 | Loading device for geotechnical engineering large-sized three-dimensional comprehensive simulation test bed |
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| CN201310290041.4A CN103454103B (en) | 2013-07-11 | 2013-07-11 | Loading device for geotechnical engineering large-sized three-dimensional comprehensive simulation test bed |
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| CN103454103B true CN103454103B (en) | 2015-07-15 |
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| CN103884831B (en) * | 2014-04-04 | 2015-11-11 | 云南省交通规划设计研究院 | A kind of roadbed side slope and underground works multifunction three-dimensional model test platform |
| CN104807974B (en) * | 2015-05-08 | 2016-03-02 | 西安科技大学 | A kind of analog material seam mining simulator stand and test method |
| CN106940233B (en) * | 2017-04-01 | 2023-03-17 | 合肥工业大学 | Underground structure waterproof test comprehensive test platform and test method thereof |
| CN109540688B (en) * | 2019-01-10 | 2023-10-24 | 辽宁工程技术大学 | Large-size true triaxial hydraulic fracturing simulation test device and test method |
| CN110284530B (en) * | 2019-05-17 | 2020-06-26 | 同济大学 | Multifunctional combined assembled model test box device combining foundation pit and tunnel and application |
| CN111474061B (en) * | 2020-04-30 | 2022-09-02 | 淮安市计量测试中心 | Water tank bearing strength test platform |
| CN112051133B (en) * | 2020-09-03 | 2024-04-05 | 华北科技学院 | Loading system for mechanical simulation test |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE19521777C2 (en) * | 1995-06-20 | 1998-08-20 | Deutsch Zentr Luft & Raumfahrt | Arrangement for introducing normal forces into shells |
| JP4399570B2 (en) * | 2000-06-12 | 2010-01-20 | 東京電力株式会社 | Horizontal force loading method and apparatus for substructure |
| CN2716851Y (en) * | 2004-03-26 | 2005-08-10 | 北京工业大学 | Building block type mechanical motion mechanism for simulating seismic oscillation table array system |
| CN100535267C (en) * | 2005-06-28 | 2009-09-02 | 中国矿业大学(北京) | Simulation test system for underground construction in city |
| CN101285808B (en) * | 2008-05-29 | 2010-08-04 | 山东大学 | High crustal stress genuine three-dimensional load model trial system |
| CN102879549B (en) * | 2012-09-29 | 2015-07-08 | 重庆大学 | Three-way load large-scale three-dimensional analog simulation test system |
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