Anti-collapse device for preloading test of hanging basket

Abstract

The utility model discloses an anti-collapse device for a hanging basket preloading test, which comprises a beam body and a counter-force frame assembly, the beam body comprises a cross section end face, a force application cavity is arranged in the beam body, the force application cavity penetrates through the cross section end face of the beam body, and the counter-force frame assembly is fixedly arranged in the force application cavity. The counterforce frame assembly has the advantages that the counterforce frame assembly can better bear pressure through the force application cavity when the load value needing to be applied by hanging basket prepressing is large, accordingly, the situation that counterforce frame anchor steel bars fall off in the hanging basket prepressing process, and the counterforce frame collapses due to crushing yield between the counterforce frame and the concrete contact surface is prevented, and construction safety is guaranteed. The anti-collapse device for the hanging basket pre-pressing test has the advantages of being simple in structure, easy to implement, suitable for being installed and used in an existing bridge hanging basket pre-pressing test, low in use cost and capable of improving benefits.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge testing equipment, and in particular relates to a hanging basket pre-compression test anti-collapse device. Background Art

[0002] The hanging basket preload test is very important for cantilever concrete rigid frame bridges and continuous beam bridges. It not only tests the safety of the hanging basket, but also provides data support for later construction. In the hanging basket preload test, the use of the reaction frame method to apply load to the hanging basket is also the most common loading method. It has the advantages of fast loading speed, small construction limitations, and easy operation.

[0003] The reaction frame anchor device required for the traditional hanging basket preloading test is generally installed on the bridge web. Since it is a temporary structure, there are fewer steel bars and no threaded steel bars are arranged. When the load value required for the hanging basket preloading is relatively large, the anchor steel bars are easy to fall off, resulting in crushing and yielding between the reaction frame and the concrete contact surface, causing a safety accident.

[0004] Based on this, the applicant considered designing a hanging basket pre-compression test anti-collapse device. Utility Model Content

[0005] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is: how to provide a collapsing prevention device for a hanging basket pre-compression test.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A collapsing prevention device for a hanging basket pre-compression test comprises a beam body and a reaction frame assembly, wherein the beam body comprises a cross-sectional end face, a force-applying cavity is provided in the beam body, the force-applying cavity penetrates the cross-sectional end face of the beam body, and the reaction frame assembly is fixedly installed in the force-applying cavity.

[0008] Compared with the prior art, the utility model has the advantages of a hanging basket pre-compression test anti-collapse device:

[0009] By setting up the force-applying cavity and the reaction frame assembly, it is achieved that when the load value required for the pre-stressing of the hanging basket is relatively large, the reaction frame assembly can better withstand the pressure through the force-applying cavity, thereby preventing the reaction frame anchor steel bars from falling off during the pre-stressing of the hanging basket, and preventing the reaction frame from collapsing due to crushing and yielding between the reaction frame and the concrete contact surface, thereby ensuring construction safety.

[0010] The above-mentioned anti-collapse device for hanging basket preloading test has the advantages of simple structure and easy implementation. It is suitable for installation and use in the existing bridge hanging basket preloading test, and has low cost of use and can improve benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model in the longitudinal section of the beam body;

[0012] Figure 2 It is a schematic diagram of the structure of the utility model in the cross section of the beam body;

[0013] Description of Reference Numerals

[0014] 100 beam body, 110 force cavity, 111 partition plate, 112 bottom plate

[0015] 210 bottom frame, 211 force application end, 212 first connection end, 220 middle frame, 221 support end, 222 second connection end, 230 upper frame, 231 fixed end, 232 third connection end, 240 first prestressed tendon

[0016] 300 connection frame

[0017] 400 bottom basket, 410 cross beam

[0018] 500 Jack DETAILED DESCRIPTION

[0019] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0020] When implementing: Figure 1-2 As shown, a hanging basket pre-stress test anti-collapse device includes a beam body 100 and a reaction frame assembly, wherein the beam body 100 includes a cross-sectional end surface, a force-applying cavity 110 is opened in the beam body 100, and the force-applying cavity 110 passes through the cross-sectional end surface of the beam body 100, and the reaction frame assembly is fixedly installed in the force-applying cavity 110.

[0021] Compared with the prior art, the utility model has the advantages of a hanging basket pre-compression test anti-collapse device:

[0022] By setting up the force-applying cavity 110 and the reaction frame assembly, when the load value required for the pre-stressing of the hanging basket is relatively large, the reaction frame assembly can better withstand the pressure through the force-applying cavity 110, thereby preventing the anchor steel bars of the reaction frame assembly from falling off during the pre-stressing of the hanging basket, and preventing the reaction frame assembly from collapsing due to crushing and yielding between the contact surface between the reaction frame assembly and the concrete, thereby ensuring construction safety.

[0023] The above-mentioned anti-collapse device for hanging basket preloading test has the advantages of simple structure and easy implementation. It is suitable for installation and use in the existing bridge hanging basket preloading test, and has low cost of use and can improve benefits.

[0024] In this embodiment, Figure 1-2As shown, the force-applying cavity 110 includes a partition 111 and a bottom plate 112 which are perpendicular to each other, and the reaction frame assembly includes a bottom frame body 210, a middle frame body 220 and an upper frame body 230, wherein the bottom frame body 210 includes a relative force-applying end 211 and a first connecting end 212, and the bottom frame body 210 is transversely arranged on the bottom plate 112, and the force-applying end 211 extends out of the force-applying cavity 110, and the middle frame body 220 includes a relative support end 221 and a second connecting end 222 The middle frame 220 is vertically arranged, the supporting end 221 abuts against the bottom plate 112 and is fixedly connected to the first connecting end 212 of the bottom frame 210, the second connecting end 222 extends upward, the upper frame 230 includes a fixed end 231 and a third connecting end 232, the upper frame 230 is horizontally arranged, the fixed end 231 is fixedly connected to the partition 111, and the third connecting end 232 is fixedly connected to the second connecting end 222.

[0025] In this way, by setting the partition 111 and the bottom plate 112, as well as the bottom frame body 210, the middle frame body 220 and the upper frame body 230, more force-bearing area can be increased between the bottom frame body 210 and the bottom plate 112, reducing the pressure between the bottom frame body 210 and the bottom plate 112, and at the same time allowing the upper frame body 230 to obtain the support force of the partition 111, thereby increasing the stability and reliability of the entire reaction frame assembly.

[0026] In this embodiment, Figure 1-2 As shown, the angle between the bottom frame body 210 and the middle frame body 220 is ninety degrees.

[0027] In this way, by setting the angle between the bottom frame 210 and the middle frame 220 to ninety degrees, it is easier to transmit power from the bottom frame 210 to the middle frame 220, and the connection method and manufacturing difficulty between the bottom frame 210 and the middle frame 220 are lowered.

[0028] In this embodiment, Figure 1-2 As shown, the included angle between the middle frame 220 and the upper frame 230 is ninety degrees.

[0029] In this way, by setting the angle between the middle frame 220 and the upper frame 230 to ninety degrees, it is easier to transmit power from the middle frame 220 to the upper frame 230, and the connection method and manufacturing difficulty between the middle frame 220 and the upper frame 230 are lower.

[0030] In this embodiment, Figure 1-2 As shown, a first prestressed rib 240 is disposed on the frame wall of the bottom frame body 210 close to the first connecting end 212 . The first prestressed rib 240 penetrates the bottom frame body 210 from top to bottom and extends into the bottom plate 112 .

[0031] During implementation, the support end 221 of the middle frame 220 is provided with a second prestressed tendon, and the second prestressed tendon penetrates the support end 221 of the middle frame 220 and extends into the bottom plate 112 .

[0032] In this way, by setting the first prestressed tendons 240 and the second prestressed tendons, the bottom frame 210 and the middle frame 220 can be more firmly connected to the bottom plate 112, avoiding crushing and yielding between the bottom frame 210 and the middle frame 220 and the bottom plate 112 after the anchor steel bars fall off.

[0033] In this embodiment, Figure 1-2 As shown, it also includes a connecting frame 300, and there are two groups of reaction frame assemblies. The two groups of reaction frame assemblies are arranged side by side in the force application cavity 110, and the two ends of the connecting frame 300 are respectively fixedly connected to the upper parts of the first connecting ends 212 of the two bottom frame bodies 210.

[0034] During implementation, third prestressed tendons are provided on both ends of the connection frame body 300 , and each third prestressed tendon passes through a corresponding end of the connection frame body 300 and extends into and connects to the corresponding bottom frame body 210 .

[0035] In this way, by providing the connecting frame 300, the two groups of reaction frame components can share the force with each other, thereby enhancing the upper limit of the bearing capacity.

[0036] In this embodiment, Figure 1-2 As shown, it also includes a bottom basket 400 and a jack 500 . The bottom basket 400 is suspended below the beam body 100 . The jack 500 is installed on the bottom basket 400 . The top of the jack 500 abuts against the bottom of the force-applying end 211 of the base frame 210 .

[0037] In this way, by providing the bottom basket 400 and the jack 500 , the bottom basket 400 can apply force to the beam body 100 through the jack 500 .

[0038] In this embodiment, Figure 1-2 As shown, a transverse steel beam 410 is provided on the bottom basket 400 , and the jack 500 is installed on the transverse steel beam 410 , and the top of the jack 500 abuts against the bottom of the force-applying end 211 of the bottom frame body 210 .

[0039] In this way, by providing the cross steel beam 410, when the jack 500 applies force to the bottom basket 400, the bottom basket 400 can be protected by the cross steel beam 410 to avoid damage to the bottom basket 400. At the same time, the cross steel beam 410 can also disperse the force applied by the jack 500, reduce the contact area, and thus reduce the pressure.

[0040] The above are only preferred implementations of the present invention. It should be pointed out that a number of modifications and improved technical solutions made by those skilled in the art without departing from the technical solution should also be deemed to fall within the scope of protection required by the claims.

Claims

1. A collapsing prevention device for a hanging basket preloading test, characterized in that: It comprises a beam body and a reaction frame assembly, wherein the beam body comprises a cross-sectional end face, a force-applying cavity is opened in the beam body, the force-applying cavity penetrates the cross-sectional end face of the beam body, and the reaction frame assembly is fixedly installed in the force-applying cavity.

2. The anti-collapse device for a hanging basket pre-compression test according to claim 1, characterized in that: The force-applying cavity includes a partition and a bottom plate that are perpendicular to each other, the reaction frame assembly includes a bottom frame body, a middle frame body and an upper frame body, the bottom frame body includes relative force-applying ends and a first connecting end, the bottom frame body is transversely arranged on the bottom plate, the force-applying end extends out of the force-applying cavity, the middle frame body includes relative support ends and a second connecting end, the middle frame body is vertically arranged, the support end abuts against the bottom plate and is fixedly connected to the first connecting end of the bottom frame body, the second connecting end extends upward, the upper frame body includes a fixed end and a third connecting end, the upper frame body is transversely arranged, the fixed end is fixedly connected to the partition, and the third connecting end is fixedly connected to the second connecting end.

3. The anti-collapse device for a hanging basket pre-compression test according to claim 2 is characterized in that: The included angle between the bottom frame and the middle frame is ninety degrees.

4. The anti-collapse device for a hanging basket pre-compression test according to claim 3 is characterized in that: The included angle between the middle frame and the upper frame is ninety degrees.

5. The anti-collapse device for a hanging basket pre-compression test according to claim 2 is characterized in that: A first prestressed rib is arranged on the frame wall of the bottom frame body close to the first connecting end. The first prestressed rib penetrates the bottom frame body from top to bottom and extends into the bottom plate.

6. The anti-collapse device for a hanging basket pre-compression test according to claim 2, characterized in that: It also includes a connecting frame, the reaction frame components have two groups, the two groups of reaction frame components are arranged side by side in the force application cavity, and the two ends of the connecting frame are respectively fixedly connected to the upper parts of the first connecting ends of the two bottom frame bodies.

7. The anti-collapse device for a hanging basket pre-compression test according to claim 2, characterized in that: It also includes a bottom basket and a jack. The bottom basket is suspended below the beam body, and the jack is installed on the bottom basket. The top of the jack abuts against the bottom of the force-applying end of the base frame.

8. The anti-collapse device for a hanging basket pre-compression test according to claim 7, characterized in that: The bottom basket is provided with a transverse steel beam, the jack is installed on the transverse steel beam, and the top of the jack abuts against the bottom of the force-applying end of the bottom frame body.

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