Horizontal bearing frame

Abstract

The utility model belongs to the technical field of ultra-large three-dimensional physical model tests, and particularly relates to a horizontal bearing frame. The bearing structure comprises a bearing structure and is characterized in that the bearing structure comprises two-end stress structures, and the two-end stress structures are connected through a connecting structure; a working area is arranged between the stress structures at the two ends of the bearing structure, and an actuator set is arranged in the working area. According to the utility model, compared with the traditional prestressed structure, the deformation of the frame is obviously reduced, the credibility of test data is improved, the safety and the reliability are obviously improved, the intrinsic safety characteristic is realized, and the safety and the reliability of the ultra-large physical model loading frame are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of super-large three-dimensional physical model testing, and in particular relates to a horizontal bearing frame. Background Art

[0002] At present, problems such as poor safety and great engineering difficulty have long plagued the use of in-situ test methods to study the formation mechanism of complex geological structures and extreme host environments in deep engineering projects of 10,000 meters, and the breeding mechanism of major disasters in deep engineering. Now, physical models of artificially configured three-dimensional similar materials are usually used to carry out relevant experiments under different boundary conditions. The theoretical basis of ultra-large physical model experiments is the principle of similarity. This method can effectively solve many problems of in-situ test methods.

[0003] The reliability of the loading structure is directly related to the accuracy and precision of the test, and thus to the credibility of the experimental data. The similarity ratio of existing test equipment is too large to truly reflect the complex geological structure information. At the same time, there are also the following problems:

[0004] The existing three-dimensional reaction frames are usually traditional prestressed structures in both horizontal and vertical directions, and usually adopt welded structures. Such structures are still acceptable for small-sized specimens below 2 meters, but cannot meet the test requirements of ultra-large three-dimensional physical model tests, such as tests of 10,000 tons or more.

[0005] The existing three-dimensional reaction frame is usually composed of two reaction frames, one of which provides horizontal reaction force and the other provides vertical reaction force. According to the layout form, it is divided into vertical and horizontal. Whether vertical or horizontal, in order to achieve the entry and exit of the specimen, it is usually necessary to move the frame horizontally or vertically. This technical solution is feasible for the loading structure of small-sized specimens below 2m, and the moving mass is usually small. However, when facing super-large loading structures, such as loading structures of more than 10,000 tons, the moving mass is usually thousands of tons, which poses a great safety risk.

[0006] The existing three-dimensional reaction force frame, whether vertical or horizontal, has a significant disadvantage. Due to structural limitations, a heavy-duty lifting device is usually required for the specimen to enter the loading position. The appearance of this device will bring great safety challenges to the entire equipment and low reliability. In the existing horizontal layout, in order to facilitate the entry and exit of the specimen, one end of the horizontal load-bearing frame usually needs to be opened. The horizontal load-bearing frame overcomes the loading reaction force through the column, and each test requires the fixing and removal of the column nuts. The removal of heavy nuts is labor-intensive and difficult to operate, and it is necessary to ensure that the prestress of many columns is consistent, which is a very delicate and time-consuming task.

[0007] The existing horizontal loading structure uses a sample transfer system to enter the loading structure, which is usually suitable for small-sized samples below 2m, but not for super-large loading structures. Because the samples used in super-large loading structure tests are usually hundreds of tons, the existing transfer system cannot withstand such heavy loads.

[0008] In summary, it is impossible to realize super-large loading structure based on existing technology, and it must be realized by using breakthrough innovative technology. Therefore, it is very necessary to develop a super-large three-dimensional physical model horizontal loading device. Utility Model Content

[0009] The purpose of the utility model is to provide a horizontal bearing frame.

[0010] A horizontal bearing frame includes a bearing structure, characterized in that: the bearing structure includes force-bearing structures at both ends, and the force-bearing structures at both ends are connected by a connecting structure; a working area is arranged between the force-bearing structures at both ends of the bearing structure, and an actuator group is arranged in the working area.

[0011] Furthermore, the bearing structure includes a front beam, and a rear beam is arranged corresponding to the front beam; the front beam is connected to one end of the column; the rear beam is connected to the other end of the column; the actuator group is arranged on the opposite side of the front beam and the rear beam.

[0012] Furthermore, another structure of the horizontal load-bearing frame includes a front load-bearing beam, and a rear load-bearing beam is arranged corresponding to the front load-bearing beam; a winding beam is arranged between the front load-bearing beam and the rear load-bearing beam; the front load-bearing beam, the rear load-bearing beam and the winding beam are fixed by a horizontal frame wire winding belt; the actuator group is arranged on the side opposite to the front load-bearing beam and the rear load-bearing beam.

[0013] Furthermore, the front beam is composed of multiple blocks, small tie rods pass through the blocks and are fixed by small tie rod nuts 38; the rear beam is composed of multiple blocks, small tie rods pass through the blocks and are fixed by small tie rod nuts 38; the rear beam is provided with an actuator group corresponding to the working area direction.

[0014] Furthermore, the front bearing beam is composed of multiple blocks, the rear bearing beam is composed of multiple blocks, the combination of the blocks and the winding beam is fixed by a horizontal frame wire winding belt; the rear bearing beam is provided with an actuator group corresponding to the working area direction.

[0015] Furthermore, the front beam is placed on a front beam sliding seat, and the front beam sliding seat is fixed on a concrete foundation; the rear beam is fixed on the concrete foundation.

[0016] The beneficial effects of the utility model.

[0017] 1. High rigidity load-bearing frame.

[0018] The horizontal load-bearing frame is a double-beam four-column structure, which can provide high-rigidity bearing in the load-bearing direction. The frame's own deformation is significantly reduced compared to traditional prestressed structures, thereby improving the credibility of the test data.

[0019] 2. The inherent safety feature of no movement of the load-bearing frame.

[0020] In order to enable the sample to enter and exit, the traditional loading structure usually requires the horizontal or vertical frame to move. The horizontal load-bearing frame of the present invention is fixed, and the safety and reliability are significantly improved, and it has an intrinsic safety feature.

[0021] 3. High rigidity steel wire wound load-bearing frame.

[0022] The horizontal load-bearing frame with wire winding prestressing technology effectively solves the problems of weak stiffness, low fatigue resistance, weak anti-eccentric load capability and stress concentration of the horizontal load-bearing frame in ultra-large three-dimensional physical model tests, thereby improving the safety and reliability of the ultra-large physical model loading frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of the horizontal load-bearing frame structure.

[0024] Figure 2 Schematic diagram of the horizontal wire winding load-bearing frame structure.

[0025] Description of the numbers in the figure: 1, bearing structure, 7, front beam, 8, rear beam, 9, actuator assembly, 10, column, 12, front beam sliding seat, 37, small tie rod, 38, small tie rod nut, 42, front bearing beam, 43, rear bearing beam, 44, winding beam, 45, horizontal frame wire winding belt, DETAILED DESCRIPTION

[0026] The utility model comprises a bearing structure 1, characterized in that: the bearing structure 1 comprises force-bearing structures at both ends, which are connected by a connecting structure; a working area is arranged between the force-bearing structures at both ends of the bearing structure, and an actuator group 9 is arranged in the working area.

[0027] Furthermore, the bearing structure 1 includes a front beam 7, and a rear beam 8 is arranged corresponding to the front beam 7; the front beam 7 is connected to one end of the column 10; the rear beam 8 is connected to the other end of the column 10; the actuator group is arranged on the opposite side of the front beam 7 and the rear beam 8.

[0028] Furthermore, another structure of the horizontal load-bearing frame includes a front load-bearing beam 42, and a rear load-bearing beam 43 is arranged corresponding to the front load-bearing beam 42; a winding beam 44 is arranged between the front load-bearing beam 42 and the rear load-bearing beam 43; the front load-bearing beam 42, the rear load-bearing beam 43 and the winding beam 44 are fixed by a horizontal frame wire winding belt 45; the actuator group is arranged on the opposite side of the front load-bearing beam and the rear load-bearing beam.

[0029] Furthermore, the front beam 7 is composed of a plurality of blocks, a small tie rod 37 passes through the blocks and is fixed by a nut 11; the rear beam 8 is composed of a plurality of blocks, a small tie rod 37 passes through the blocks and is fixed by a nut 11; the rear beam 8 is provided with an actuator group corresponding to the direction of the working area.

[0030] Furthermore, the front bearing beam 42 is composed of multiple blocks, the rear bearing beam 43 is composed of multiple blocks, and the combination of the blocks and the winding beam 44 is fixed by a horizontal frame wire winding belt 45; the rear bearing beam 43 is provided with an actuator group corresponding to the working area direction.

[0031] Furthermore, the front beam 7 is placed on a front beam sliding seat 12, and the front beam sliding seat 12 is fixed on a concrete foundation; the rear beam 8 is fixed on a concrete foundation.

[0032] It can be understood that the above specific description of the utility model is only used to illustrate the utility model and is not limited to the technical solution described in the implementation mode of the utility model. Ordinary technicians in the field should understand that the utility model can still be modified or replaced by equivalents to achieve the same technical effect; as long as the use requirements are met, they are within the protection scope of the utility model.

Claims

1. A horizontal load-bearing frame, comprising a load-bearing structure (1), characterized in that: The bearing structure (1) comprises force-bearing structures at both ends, which are connected via a connecting structure; a working area is provided between the force-bearing structures at both ends of the bearing structure, and an actuator group (9) is provided in the working area.

2. A horizontal load-bearing frame according to claim 1, characterized in that: The bearing structure (1) comprises a front beam (7), and a rear beam (8) is arranged corresponding to the front beam (7); the front beam (7) is connected to the rear beam (8) through a column (10); and the actuator group (9) is arranged on a side opposite to the front beam (7) and the rear beam (8).

3. A horizontal load-bearing frame according to claim 1, characterized in that: Another structure of the bearing structure (1) comprises a front bearing beam (42), a rear bearing beam (43) being arranged corresponding to the front bearing beam (42); a winding beam (44) being arranged between the front bearing beam (42) and the rear bearing beam (43); the front bearing beam (42), the rear bearing beam (43) and the winding beam (44) being fixed by a horizontal frame steel wire winding belt (45); and the actuator group (9) being arranged on a side opposite to the front bearing beam and the rear bearing beam.

4. A horizontal load-bearing frame according to claim 2, characterized in that: The front beam (7) is composed of a plurality of blocks, small tie rods (37) pass through the blocks and are fixed by nuts (11); the rear beam (8) is composed of a plurality of blocks, small tie rods (37) pass through the blocks and are fixed by small tie rod nuts (38); the rear beam (8) is provided with an actuator group (9) corresponding to the direction of the working area.

5. A horizontal load-bearing frame according to claim 3, characterized in that: The front bearing beam (42) is composed of a plurality of blocks, the rear bearing beam (43) is composed of a plurality of blocks, and the combination of the blocks and the winding beam (44) is fixed by a horizontal frame steel wire winding belt (45); the rear bearing beam (43) is provided with an actuator group corresponding to the direction of the working area.

6. A horizontal load-bearing frame according to claim 2, characterized in that: The front beam (7) is placed on a front beam sliding seat (12), and the front beam sliding seat (12) is fixed on a concrete foundation; the rear beam (8) is fixed on the concrete foundation.

Images