Multidirectional stress experiment structure for civil engineering pier strength test

Abstract

The utility model discloses a multidirectional stress experiment structure for civil engineering pier strength test, which belongs to the technical field of stress experiment, and comprises two mounting semi-rings, the two mounting semi-rings are hinged and matched, the side walls of the two mounting semi-rings are provided with multidirectional stress test mechanisms, and the multidirectional stress test mechanisms are arranged on the side walls of the two mounting semi-rings. The bottoms of the two mounting semi-rings are provided with auxiliary support test mechanisms, the inner walls of the two mounting semi-rings are provided with support protection mechanisms, the tops of the two mounting semi-rings are provided with hoisting assemblies, and the two mounting semi-rings are connected through a connecting assembly. According to the utility model, the multi-directional stress testing mechanism is arranged around the pier, the stress testing pieces are distributed around the pier, and the stress testing pieces are used for testing the stress of multiple positions of the pier, so that the multi-directional and multi-position stress testing of the pier is realized, and the accuracy of the stress testing of the pier is improved.

Description

Technical Field

[0001] This utility model relates to the field of stress testing technology, and in particular to a multi-directional stress testing structure for testing the strength of civil engineering bridge piers. Background Technology

[0002] In the field of civil engineering, bridge piers are an important component of bridges, and their strength is directly related to the overall stability and safety of the bridge. Accurate testing of bridge strength is an important part of ensuring the quality of bridge engineering. Most existing bridge pier strength testing methods focus on stress testing in a single direction, which makes it difficult to fully reflect the stress situation of bridge piers in actual use, since bridge piers bear complex stresses from multiple directions in the bridge structure.

[0003] When operators fix strain gauges, they are often working at heights. The welding and adhesive bonding methods not only increase the time and labor intensity of working at heights, leading to increased operational risks, but also result in low operational efficiency.

[0004] An existing patent (publication number: CN212030785U) discloses a strain gauge for bridge stress testing, which includes a static and dynamic strain gauge, a lead wire snapped into the wiring channel of the static and dynamic strain gauge, and a compound strain gauge connected to the lead wire. The compound strain gauge includes a test strain gauge as a testing element and a lead wire connector detachably connected to the test strain gauge. A connector is fixedly connected to one end of the lead wire facing the lead wire connector, and the connector is detachably connected to the lead wire connector. A friction-enhancing layer is formed on the surface of the compound strain gauge. An adhesive layer is formed on the friction-enhancing layer. A release film is bonded to the adhesive layer. This utility model has the advantages of shortening the time of high-altitude operation, reducing the intensity of high-altitude operation, and improving testing efficiency.

[0005] To address the aforementioned issues, existing patents offer solutions, but they suffer from limitations in conducting stress tests on multiple orientations and locations of bridge piers. They also fail to simulate the complex stress conditions experienced by bridge piers in actual use, resulting in an inability to accurately test the stress of bridge piers.

[0006] Therefore, a multi-directional stress test structure for testing the strength of bridge piers in civil engineering is proposed. Utility Model Content

[0007] The purpose of this invention is to provide a multi-directional stress test structure for testing the strength of bridge piers in civil engineering. This structure can solve the problem that existing strain gauges used for bridge stress testing cannot perform stress tests on multiple directions and locations of bridge piers, and cannot simulate the complex stress conditions of bridge piers in actual use, thus preventing accurate stress testing of bridge piers.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a multi-directional stress test structure for testing the strength of bridge piers in civil engineering, comprising two mounting semi-rings, the two mounting semi-rings being hinged together, a multi-directional stress testing mechanism being provided on the side walls of the two mounting semi-rings, an auxiliary support testing mechanism being provided at the bottom of the two mounting semi-rings, a support and protection mechanism being provided on the inner walls of the two mounting semi-rings, a hoisting assembly being provided at the top of the two mounting semi-rings, and the two mounting semi-rings being connected by a connecting assembly;

[0009] The multi-directional stress testing mechanism includes a support sleeve, an adjusting screw, adjusting blocks, and a stress testing plate. Two support sleeves are disposed on the side walls of the mounting half-ring. The adjusting screw is movably disposed in the middle of the support sleeve. Two adjusting blocks are threadedly connected to the two ends of the adjusting screw. The side walls of the adjusting blocks are in contact with the support sleeves. The stress testing plate is hinged to one end of the adjusting screw. The two support sleeves are located at both ends of the mounting half-ring.

[0010] Preferably, the auxiliary support testing mechanism includes a support block, a support screw, a support cone, and a strain gauge. Two support blocks are fixedly connected to the bottom of the mounting half-ring, the support screw is threadedly connected to the middle of the support block, the support cone is fixedly connected to one end of the support screw, and the strain gauge is embedded in the side wall of the support cone.

[0011] Preferably, the support and protection mechanism includes a U-shaped plate, a T-shaped rod, a support spring, a mounting frame, and a pulley. Multiple U-shaped plates are respectively fixedly connected to the side walls at both ends of the mounting semi-ring. Two T-shaped rods are movably disposed in the middle of the U-shaped plates. The support spring is sleeved on the side wall of the T-shaped rod. The mounting frame is fixedly connected to the side walls of the two T-shaped rods. The two ends of the support spring contact the mounting frame and the U-shaped plate respectively. The pulley is disposed in the middle of the mounting frame.

[0012] Preferably, the lifting assembly includes lifting bars, connectors, and connecting holes. Two lifting bars are hinged to the sidewall of the mounting half-ring, the connector is hinged to the top of the lifting bars, and the connecting hole is located in the middle of the connector.

[0013] Preferably, the connecting assembly includes a connecting strip, mounting screws, a through groove, and a mounting screw block. The connecting strip is disposed at one end of the mounting semi-ring. The two mounting screws are fixedly connected to the side wall of the connecting strip. The through groove is formed on the side wall of the connecting strip. The mounting screws are movably connected to the through groove. The mounting screw block is threadedly connected to one end of the mounting screw and contacts the connecting strip.

[0014] Preferably, a limiting plate is installed at one end of the adjusting screw, a guide cylinder is fixedly connected to the side wall of the limiting plate, a guide rod is fixedly connected to the side wall of the mounting half ring, and the guide cylinder is movably connected to the guide rod.

[0015] Preferably, auxiliary wheels are provided at both ends of the mounting frame, and the diameter of the auxiliary wheels is smaller than the diameter of the pulley.

[0016] Preferably, a reinforcing rod is fixedly connected to the side wall of the mounting frame, and the reinforcing rod is movably connected to the mounting semi-ring.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This application establishes a multi-directional stress testing mechanism, which is distributed around the bridge pier. Stress test pieces are distributed around the bridge pier, and the stress test pieces test the stress at multiple locations on the bridge pier. This achieves multi-directional and multi-location stress testing of the bridge pier. At the same time, by reading the test values ​​of multiple stress test pieces and taking the average of multiple test values, the stress data of the bridge pier can be accurately obtained, thus improving the accuracy of the stress testing of the bridge pier.

[0019] 2. This application incorporates an auxiliary support testing mechanism, which supports the installation half-ring, allowing it to rest on the pier. This mechanism enables the installation half-ring to be positioned at the axial center of the pier. Simultaneously, strain gauges assist in stress testing of the pier, increasing the number of stress testing locations and improving the accuracy of pier stress testing. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is an overall structural view of the present invention;

[0022] Figure 2 This is a side view of the present invention;

[0023] Figure 3 This utility model Figure 2 A three-dimensional cross-sectional view at point AA;

[0024] Figure 4 This is a structural view of the hoisting assembly and the connecting assembly in this utility model;

[0025] Figure 5 This is a structural view of the multi-directional stress testing mechanism in this utility model;

[0026] Figure 6 This is a structural view of the support screw, support cone, and strain gauge in this utility model.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Installation semi-ring; 2. Multi-directional stress testing mechanism; 3. Auxiliary support testing mechanism; 4. Support and protection mechanism; 5. Lifting assembly; 6. Connecting assembly; 21. Support sleeve; 22. Adjusting screw; 23. Adjusting screw block; 24. Stress test piece; 31. Support block; 32. Support screw; 33. Support cone; 34. Strain gauge; 41. U-shaped plate; 42. T-shaped rod; 43. Support spring; 44. Mounting frame; 45. Pulley; 51. Lifting strip; 52. Connector; 53. Connecting hole; 61. Connecting strip; 62. Mounting screw; 63. Through groove; 64. Mounting screw block; 7. Limiting plate; 8. Guide cylinder; 9. Guide rod; 10. Auxiliary wheel; 11. Reinforcing rod. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figures 1 to 6 This utility model provides a technical solution:

[0031] A multi-directional stress test structure for testing the strength of bridge piers in civil engineering includes two mounting half-rings 1, which are hinged together. A multi-directional stress testing mechanism 2 is provided on the side walls of the two mounting half-rings 1, an auxiliary support testing mechanism 3 is provided at the bottom of the two mounting half-rings 1, a support and protection mechanism 4 is provided on the inner walls of the two mounting half-rings 1, a hoisting assembly 5 is provided at the top of the two mounting half-rings 1, and the two mounting half-rings 1 are connected by a connecting assembly 6.

[0032] The multi-directional stress testing mechanism 2 includes a support sleeve 21, an adjusting screw 22, an adjusting screw block 23, and a stress test piece 24. Two support sleeves 21 are set on the side wall of the mounting half ring 1. The adjusting screw 22 is movably set in the middle of the support sleeve 21. Two adjusting screw blocks 23 are threaded to both ends of the adjusting screw 22. The side wall of the adjusting screw block 23 contacts the support sleeve 21. The stress test piece 24 is hinged to one end of the adjusting screw 22. The two support sleeves 21 are located at both ends of the mounting half ring 1.

[0033] Specifically, such as Figure 3 As shown, the support and protection mechanism 4 includes a U-shaped plate 41, a T-shaped rod 42, a support spring 43, a mounting frame 44, and a pulley 45. Multiple U-shaped plates 41 are fixedly connected to the two side walls at both ends of the mounting half-ring 1. Two T-shaped rods 42 are movably arranged in the middle of the U-shaped plate 41. The support spring 43 is sleeved on the side wall of the T-shaped rod 42. The mounting frame 44 is fixedly connected to the side wall of the two T-shaped rods 42. The two ends of the support spring 43 are in contact with the mounting frame 44 and the U-shaped plate 41, respectively. The pulley 45 is arranged in the middle of the mounting frame 44.

[0034] Specifically, such as Figure 4 As shown, the connecting assembly 6 includes a connecting strip 61, mounting screws 62, a through groove 63, and a mounting screw block 64. The connecting strip 61 is disposed at one end of the mounting half-ring 1. Two mounting screws 62 are fixedly connected to the side wall of the connecting strip 61. The through groove 63 is opened on the side wall of the connecting strip 61. The mounting screws 62 are movably connected to the through groove 63. The mounting screw block 64 is threadedly connected to one end of the mounting screws 62 and contacts the connecting strip 61.

[0035] Specifically, such as Figure 5 As shown, a limiting plate 7 is installed at one end of the adjusting screw 22, and a guide cylinder 8 is fixedly connected to the side wall of the limiting plate 7. A guide rod 9 is fixedly connected to the side wall of the mounting half ring 1, and the guide cylinder 8 and the guide rod 9 are movably connected.

[0036] Specifically, such as Figure 3 As shown, auxiliary wheels 10 are provided at both ends of the mounting frame 44, and the diameter of the auxiliary wheels 10 is smaller than the diameter of the pulley 45.

[0037] Specifically, such as Figure 3 As shown, a reinforcing rod 11 is fixedly connected to the side wall of the mounting frame 44, and the reinforcing rod 11 is movably connected to the mounting half-ring 1.

[0038] In use, firstly, two mounting half-rings 1 are placed on the bridge pier. When the two mounting half-rings 1 are joined, the mounting screw 62 enters the through groove 63. The two mounting half-rings 1 are connected by the mounting screw block 64 and the mounting screw 62. When the mounting half-rings 1 are adjusted on the bridge pier, the pulley 45 contacts the bridge pier. When the mounting half-rings 1 are adjusted, the pulley 45 supports and protects the movement of the mounting half-rings 1. The support spring 43 supports the mounting frame 44, so that the movement of the pulley 45 is buffered. Then, the adjusting screw block 23 is rotated to adjust the position of the adjusting screw 22 inside the support sleeve 21. When the adjusting screw 22 moves, the movement of the adjusting screw 22 is guided and restricted by the limiting plate 7, the guide cylinder 8 and the guide rod 9, so that the stress test piece 24 contacts the bridge pier. Multiple stress test pieces 24 are distributed around the bridge pier. The stress test pieces 24 test the stress of the bridge pier. In this way, stress testing of the bridge pier can be carried out in multiple directions and positions, which improves the accuracy of stress testing of the bridge pier.

[0039] Specifically, such as Figure 3 and Figure 6 As shown, the auxiliary support testing mechanism 3 includes a support block 31, a support screw 32, a support cone 33, and a strain gauge 34. Two support blocks 31 are fixedly connected to the bottom of the mounting half ring 1, the support screw 32 is threadedly connected to the middle of the support block 31, the support cone 33 is fixedly connected to one end of the support screw 32, and the strain gauge 34 is embedded in the side wall of the support cone 33.

[0040] Specifically, such as Figure 4 As shown, the hoisting assembly 5 includes hoisting bars 51, connectors 52, and connecting holes 53. The two hoisting bars 51 are hinged to the side wall of the mounting half-ring 1, the connectors 52 are hinged to the top of the hoisting bars 51, and the connecting holes 53 are located in the middle of the connectors 52.

[0041] In use, the installation half-ring 1 is fixed to the pier using the lifting bar 51, connector 52, and connector port with impact screws. This allows for the lifting and fixing of the installation half-ring. At the same time, rotating the support screw 32 causes the support cone 33 to contact the pier. Multiple support screws 32 support the installation half-ring 1, ensuring that the installation half-ring 1 is distributed at the axial position of the pier. Simultaneously, when the support cone 33 contacts the pier, the strain gauge 34 also contacts the pier, performing stress testing on the pier. This increases the number of stress testing positions on the pier and improves the accuracy of the stress value in the pier strength test.

[0042] By adopting the above technical solution, the problem that existing strain gauges for bridge stress testing cannot perform stress testing on multiple orientations and locations of bridge piers, cannot simulate the complex stress conditions of bridge piers in actual use, and thus cannot accurately test the stress of bridge piers is solved.

[0043] Working principle: In use, the two mounting half-rings 1 are first placed on the bridge pier. When the two mounting half-rings 1 are joined, the mounting screw 62 enters the through groove 63. The two mounting half-rings 1 are connected by the mounting screw block 64 and the mounting screw 62. They are then fixed to the bridge pier by the lifting strip 51, the connector 52, and the connection port using impact screws, which can lift and fix the mounting half strip. Then, the adjusting screw block 23 is rotated to adjust the position of the adjusting screw 22 inside the support sleeve 21. When the adjusting screw 22 moves, it is limited by the limit. Plate 7, guide cylinder 8, and guide rod 9 guide and restrict the movement of adjusting screw 22, causing stress test piece 24 to contact the pier. Multiple stress test pieces 24 are distributed around the pier, and the stress test pieces 24 perform stress tests on the pier. At the same time, the support screw 32 is rotated to make the support cone 33 contact the pier. Multiple support screws 32 support the mounting half ring 1, so that the mounting half ring 1 is distributed at the axial position of the pier. When the support cone 33 contacts the pier, the strain gauge 34 contacts the pier, and the strain gauge 34 performs stress tests on the pier.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A multi-directional stress test structure for strength testing of civil engineering bridge piers, comprising two mounting semi-rings (1), characterized in that: The two mounting half-rings (1) are hinged together. A multi-directional stress testing mechanism (2) is provided on the side wall of the two mounting half-rings (1). An auxiliary support testing mechanism (3) is provided at the bottom of the two mounting half-rings (1). A support and protection mechanism (4) is provided on the inner wall of the two mounting half-rings (1). A hoisting assembly (5) is provided at the top of the two mounting half-rings (1). The two mounting half-rings (1) are connected by a connecting assembly (6). The multi-directional stress testing mechanism (2) includes a support sleeve (21), an adjusting screw (22), an adjusting screw block (23), and a stress testing piece (24). Two support sleeves (21) are disposed on the side wall of the mounting half ring (1). The adjusting screw (22) is movably disposed in the middle of the support sleeve (21). Two adjusting screw blocks (23) are threadedly connected to both ends of the adjusting screw (22). The side wall of the adjusting screw block (23) contacts the support sleeve (21). The stress testing piece (24) is hinged to one end of the adjusting screw (22). The two support sleeves (21) are located at both ends of the mounting half ring (1).

2. The multi-directional stress test structure for testing the strength of civil engineering bridge piers according to claim 1, characterized in that: The auxiliary support testing mechanism (3) includes a support block (31), a support screw (32), a support cone (33), and a strain gauge (34). Two support blocks (31) are fixedly connected to the bottom of the mounting half ring (1). The support screw (32) is threadedly connected to the middle of the support block (31). The support cone (33) is fixedly connected to one end of the support screw (32). The strain gauge (34) is embedded in the side wall of the support cone (33).

3. The multi-directional stress test structure for testing the strength of civil engineering bridge piers according to claim 1, characterized in that: The support and protection mechanism (4) includes a U-shaped plate (41), a T-shaped rod (42), a support spring (43), a mounting frame (44), and a pulley (45). The multiple U-shaped plates (41) are fixedly connected to the two side walls at both ends of the mounting half-ring (1). The two T-shaped rods (42) are movably disposed in the middle of the U-shaped plate (41). The support spring (43) is sleeved on the side wall of the T-shaped rod (42). The mounting frame (44) is fixedly connected to the side walls of the two T-shaped rods (42). The two ends of the support spring (43) are in contact with the mounting frame (44) and the U-shaped plate (41) respectively. The pulley (45) is disposed in the middle of the mounting frame (44).

4. The multi-directional stress test structure for testing the strength of civil engineering bridge piers according to claim 1, characterized in that: The hoisting assembly (5) includes a hoisting bar (51), a connector (52), and a connecting hole (53). The two hoisting bars (51) are hinged to the side wall of the mounting half ring (1), the connector (52) is hinged to the top of the hoisting bar (51), and the connecting hole (53) is located in the middle of the connector (52).

5. A multi-directional stress test structure for testing the strength of civil engineering bridge piers according to claim 1, characterized in that: The connecting assembly (6) includes a connecting strip (61), mounting screws (62), a through groove (63), and a mounting block (64). The connecting strip (61) is disposed at one end of the mounting half-ring (1). Two mounting screws (62) are fixedly connected to the side wall of the connecting strip (61). The through groove (63) is opened on the side wall of the connecting strip (61). The mounting screws (62) are movably connected to the through groove (63). The mounting block (64) is threadedly connected to one end of the mounting screws (62) and contacts the connecting strip (61).

6. The multi-directional stress test structure for testing the strength of civil engineering bridge piers according to claim 1, characterized in that: One end of the adjusting screw (22) is equipped with a limiting plate (7), and a guide cylinder (8) is fixedly connected to the side wall of the limiting plate (7). The side wall of the mounting half ring (1) is fixedly connected to the guide rod (9), and the guide cylinder (8) is movably connected to the guide rod (9).

7. A multi-directional stress test structure for testing the strength of civil engineering bridge piers according to claim 3, characterized in that: The mounting frame (44) is provided with auxiliary wheels (10) at both ends, and the diameter of the auxiliary wheels (10) is smaller than the diameter of the pulley (45).

8. A multi-directional stress test structure for testing the strength of civil engineering bridge piers according to claim 3, characterized in that: A reinforcing rod (11) is fixedly connected to the side wall of the mounting frame (44), and the reinforcing rod (11) is movably connected to the mounting half-ring (1).

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