Testing device for monitoring axial force of inclined strut

Abstract

The utility model discloses a testing device for monitoring the axial force of an inclined strut, which relates to the technical field of constructional engineering and comprises a top beam, an embedded part, a spherical steel support, an axial force meter, the inclined strut and a prefabricated member, the embedded part is arranged on one side of the top beam, a first base is installed on the embedded part and connected with the embedded part through a bolt, and a second base is installed on the prefabricated member and connected with the spherical steel support. The spherical steel support is composed of a second base, a spherical high-strength nut and a third base, the axial force meter is arranged between the second base and the third base of the spherical steel support, and the third base and the second base are connected through four axial hydraulic rods. The processing links of the base plate are reduced, the installation time is greatly shortened, the construction efficiency is improved, the project progress is accelerated, the spherical steel support can rotate and axially stretch out and draw back, inclined struts at different angles and a supporting wall body can be flexibly adjusted and tightly connected, and the problem that the angle of the base plate cannot be finely adjusted in a conventional method is solved. And the field matching degree is improved.

Description

Technical Field

[0001] This utility model relates to the field of building engineering technology, specifically a test device for monitoring the axial force of diagonal bracing. Background Technology

[0002] In foundation pit projects for building construction, geotechnical engineering, and municipal engineering, the stability of the foundation pit is crucial for the safety and smooth progress of the project. Internal support systems were once the main method of foundation pit support. With technological advancements, diagonal bracing has become increasingly used in practical engineering projects because it can solve the problem of mechanical equipment being unable to be deployed due to site limitations.

[0003] Axial force monitoring of supports within a foundation pit is a crucial aspect of ensuring pit safety. It reflects the stress state of the support structure in real time, enabling timely intervention to address potential risks. However, existing technologies for axial force monitoring of diagonal braces have significant shortcomings. Conventional axial force monitoring devices are mostly suitable for scenarios where the support system is perpendicular to the retaining wall. When dealing with diagonal braces, where the support system is not perpendicular to the retaining wall, specially made pads are required to adjust the angle of the axial force monitoring device. However, these specially made pads not only have long processing cycles, delaying project progress, but their fixed angle makes fine-tuning difficult based on actual site conditions, leading to difficulties in on-site matching and inaccurate installation, thus affecting the accuracy and reliability of axial force monitoring. Therefore, those skilled in the art have provided a test device for axial force monitoring of diagonal braces. This device primarily uses a spherical steel support to connect the support system and the retaining wall via the monitoring device. The spherical steel support connection can be adjusted in length and rotated in direction, thus tightly connecting the support system and the retaining wall. It is reusable, economical, and environmentally friendly, addressing the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this invention is to provide a test device for monitoring the axial force of a diagonal brace, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A test device for monitoring the axial force of a diagonal brace includes a capping beam, embedded parts, a spherical steel support, an axial force gauge, diagonal braces, and prefabricated components. An embedded part is provided on one side of the capping beam. The embedded part is pre-embedded during the construction of the capping beam or wainscoting. It can be welded when the steel sheet piles are used for support or when the steel profiles are used as wainscoting walers. A base is installed on the embedded part and connected by bolts. The spherical steel support consists of a second base, a spherical high-strength nut, and a third base. The spherical nut allows for rotation and axial extension / retraction. The axial force gauge is positioned between the second and third bases of the spherical steel support. The second and third bases are connected by four axial hydraulic rods. The axial force gauge can be brought into a balanced state by adjusting the hydraulic rods. Once the axial force gauge starts working, the hydraulic rods are adjusted to a free state.

[0007] As a further embodiment of this utility model: the base of the spherical steel support is mounted on the precast component and connected by bolts.

[0008] As a further embodiment of this utility model: the prefabricated component is installed on the top of the diagonal brace, wherein when the diagonal brace is made of rigid material, the prefabricated component can be welded on the top.

[0009] As a further improvement of this utility model, the embedded part is provided with bolt holes for connecting with the base of the spherical steel support.

[0010] As a further improvement of this utility model: the precast component at the top of the inclined brace pile is provided with bolt holes for connecting with the base of the spherical steel support.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. Compared with traditional methods, there is no need to temporarily make special pads for diagonal braces at different angles, which reduces the pad processing steps, greatly shortens the installation time, improves construction efficiency, and speeds up the project progress.

[0013] 2. The spherical steel support can rotate and extend axially, allowing for flexible adjustment and tight connection between the diagonal brace and the retaining wall at different angles. This solves the problem that the angle of the pad cannot be finely adjusted in conventional methods, thus improving the on-site matching accuracy.

[0014] 3. After completing a monitoring task, each component of the device can be reused in other projects if the structure is not damaged, which reduces material waste, conforms to the concept of economic and environmental protection, and reduces engineering costs.

[0015] 4. By first balancing and adjusting the axial force gauge using an axial hydraulic rod, and then allowing it to work in a free state, the axial force gauge can accurately sense the axial force of the inclined support, and the overall stable installation of the device also provides a guarantee for accurate monitoring. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an experimental device for monitoring the axial force of a diagonal brace.

[0017] Figure 2 This is a schematic diagram of the spherical high-strength nut and axial force gauge in a test device for monitoring the axial force of a diagonal brace.

[0018] Figure 3 This is a schematic diagram of the cap beam and embedded parts in a test device for monitoring the axial force of a diagonal brace.

[0019] Figure 4 This is a schematic diagram of the structure of the diagonal brace and welded plate in a test device for monitoring the axial force of a diagonal brace.

[0020] In the diagram: 111-Cover beam; 112-Embedded part; 211-Base one; 221-Spherical high-strength nut; 231-Base two; 241-Hydraulic rod; 242-Axis force gauge; 251-Base three; 311-Diagonal brace; 312-Precast part. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] Please see Figures 1-4In this embodiment of the present invention, a test device for monitoring the axial force of a diagonal brace includes a crown beam 111, an embedded part 112, a spherical steel support, an axial force gauge 242, a diagonal brace 311, and a prefabricated part 312. An embedded part 112 is provided on one side of the crown beam 111. The embedded part 112 is pre-embedded during the construction of the crown beam 111 or the wainscoting. It can be welded when the sheet piles are used for support or when the steel profiles are used as wainscoting walers. A base 211 is installed on the embedded part 112 and connected by bolts. The spherical steel support consists of a base 231, a spherical high-strength nut 221, and a base 251. The spherical nut allows for rotation and axial extension / retraction. The axial force gauge 242 is located on the bases 231 and 251 of the spherical steel support. Between 251, the base three 251 and the base two 231 are connected by four axial hydraulic rods 241. By adjusting the hydraulic rods 241, the axial force gauge 242 can be brought into a balanced state. After the axial force gauge 242 starts working, the hydraulic rods 241 are adjusted to a free state. The base three 251 of the spherical steel support is installed on the precast part 312 and connected by bolts. The precast part 312 is installed on the top of the diagonal brace 311. When the diagonal brace 311 is made of rigid material, the precast part 312 can be welded to the top. The embedded part 112 is provided with bolt holes for connecting with the base one 211 of the spherical steel support. The precast part 312 at the top of the diagonal brace 311 is provided with bolt holes for connecting with the base three 251 of the spherical steel support.

[0023] The working principle of this utility model is as follows: During the construction stage of the crown beam 111 or the waist beam, the embedded part 112 is pre-embedded; if steel sheet pile support or steel section is used as the waist beam waler, the embedded part 112 is fixed by welding. Using the bolt holes on the embedded part 112, the base 211 of the spherical steel support is fixed by bolt connection, realizing the initial connection between the device and the crown beam 111 or the waist beam. At the same time, the precast part 312 is connected to the base 251 of the spherical steel support by bolts. For the rigid material diagonal brace 311, the precast part 312 is fixed at its top by welding, so that the entire device is stably installed between the diagonal brace 311 and the crown beam 111. The spherical high-strength nut 221 inside the spherical steel support has the functions of rotation and axial extension. When the diagonal brace 311 and the support wall (crown beam 111) are connected, the spherical high-strength nut 221 inside the spherical steel support has the functions of rotation and axial extension. When there is an angular deviation, the angle and distance between the diagonal brace 311 and the crown beam 111 can be flexibly adjusted by rotating and extending the ball nut, so that the two are tightly connected. Unlike the traditional method, there is no need to rely on a special pad, which effectively solves the problem of on-site angle matching. In addition, the axial force gauge 242 is set between the base 231 and the base 251 of the spherical steel support and is connected by four axial hydraulic rods 241. Before the axial force gauge 242 starts working, the hydraulic rods 241 are adjusted to make the axial force gauge 242 in a balanced state to prepare for accurate monitoring. When the axial force gauge 242 starts working, the hydraulic rods 241 are adjusted to a free state. At this time, the axial force gauge 242 can independently sense the axial force transmitted by the diagonal brace 311 and convert the axial force signal into corresponding data, thereby realizing accurate monitoring of the axial force of the diagonal brace 311.

[0024] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A test device for monitoring the axial force of a diagonal bracing, comprising a crown beam (111), a pre-embedded part (112), a spherical steel support, an axial force meter (242), a diagonal bracing (311) and a prefabricated part (312), characterized in that, The crown beam (111) is provided with a pre-embedded part (112) on one side, a base one (211) is installed on the pre-embedded part (112) and is connected through bolts, the spherical steel support is composed of a base two (231), a spherical high-strength nut (221) and a base three (251), an axial force meter (242) is arranged between the base two (231) and the base three (251) of the spherical steel support, the base three (251) and the base two (231) are connected through four axial hydraulic rods (241), the base three (251) of the spherical steel support is installed on the precast part (312) and is connected through bolts, and the precast part (312) is installed on the top of the inclined brace (311).

2. A test apparatus for monitoring axial force in a brace according to claim 1, wherein The pre-embedded part (112) is provided with bolt holes for connecting with the base one (211) of the spherical steel support.

3. A test apparatus for monitoring axial force in a brace according to claim 1, wherein The inclined brace (311) pile top precast part (312) is provided with bolt holes for connecting with the base three (251) of the spherical steel support.

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