CN-224216206-U - High-speed bridge structure stress monitoring embedded assembly

Abstract

The utility model relates to the technical field of bridge monitoring tools, in particular to a high-speed bridge structure stress monitoring embedded assembly which comprises a rigid sleeve, wherein a flexible dowel bar is arranged at the upper end of the rigid sleeve, a plurality of horizontally arranged steel bars are arranged on the outer wall of one side of the rigid sleeve, the top end of the flexible dowel bar is in contact with a bridge stress surface of a bridge body, a cavity is formed in the rigid sleeve and is used for installing a stress sensor, and stress generated by the bridge stress surface is transmitted to the stress sensor through the flexible dowel bar. In the high-speed bridge structure stress monitoring embedded assembly, the combined design of the flexible dowel bar and the rigid sleeve enables the stress generated by the stress surface of the bridge to be efficiently and accurately transferred to the stress sensor. The flexible dowel bar is made of stainless steel materials, the flexibility of the flexible dowel bar can be well adapted to micro deformation of a bridge structure, the problem of stress transmission distortion caused by the fact that structural rigidity cannot be adapted to deformation is avoided, and accuracy of monitoring data is greatly improved.

Inventors

• ZHANG ZHAO
• WANG JUNYI
• LIU YIMENG
• LUO HAOCHENG
• SHENG BIN
• GUO MENG
• WANG PENGPAI
• CHEN QIWEN
• ZHANG QIANG
• Lian Shuzhang

Assignees

• 河南交通云数字科技有限公司

Dates

Publication Date

20260508

Application Date

20250717

Claims (8)

1. 1. The high-speed bridge structure stress monitoring embedded assembly comprises a rigid sleeve (1) and is characterized in that a flexible dowel bar (2) is installed at the upper end of the rigid sleeve (1), a plurality of horizontally arranged reinforcing steel bars (3) are installed on the outer wall of one side of the rigid sleeve (1), the top end of the flexible dowel bar (2) is in contact with a bridge stress surface (41) of a bridge body (4), a cavity is formed in the rigid sleeve (1) and used for installing a stress sensor (5), stress generated by the bridge stress surface (41) is transmitted to the stress sensor (5) through the flexible dowel bar (2), a wiring end (6) is installed at the bottom end of the stress sensor (5), and the wiring end (6) is externally connected with data acquisition equipment.
2. 2. The high-speed bridge structure stress monitoring embedded assembly of claim 1, wherein the steel bars (3) are arranged in parallel at equal intervals from top to bottom, one ends of the steel bars (3) are embedded into the bridge body (4), and the other ends of the steel bars are welded and fixed with the outer wall of the rigid sleeve (1).
3. 3. The high-speed bridge structural stress monitoring embedded assembly of claim 1, wherein the rigid sleeve (1) is made of carbon steel materials, and the flexible dowel bar (2) is made of stainless steel materials.
4. 4. The high-speed bridge structural stress monitoring embedded assembly of claim 1, wherein the lower end of the flexible dowel bar (2) is located in the rigid sleeve (1) and is provided with a limiting boss (21), the upper end of the rigid sleeve (1) is detachably provided with a limiting cover (12), the limiting boss (21) is limited by the limiting cover (12), and a hole site for the flexible dowel bar (2) to pass through is formed in the middle of the limiting cover (12).
5. 5. The high-speed bridge structure stress monitoring embedded assembly of claim 4, wherein the top of the rigid sleeve (1) is provided with a threaded end (11), the inner wall of the limit cover (12) is provided with internal threads, and the threaded end (11) is in threaded connection with the limit cover (12).
6. 6. The stress monitoring embedded assembly of the high-speed bridge structure according to claim 4, wherein a force transmission end (22) is arranged at the lower end of the flexible force transmission rod (2) close to the stress sensor (5), and the force transmission end (22) is in contact with the stress sensor (5).
7. 7. The high-speed bridge structural stress monitoring embedded assembly of claim 6, wherein a buffer spring (23) is sleeved outside the force transmission end (22), the upper end of the buffer spring (23) is abutted with the limiting boss (21), and the lower end of the buffer spring (23) is abutted with the upper end of the rigid sleeve (1).
8. 8. The high-speed bridge structural stress monitoring embedded assembly of claim 1, wherein the top end of the flexible dowel bar (2) is provided with a conical stress end (24) which is matched with the inclined plane of the bridge stress surface (41).

Description

High-speed bridge structure stress monitoring embedded assembly Technical Field The utility model relates to the technical field of bridge monitoring tools, in particular to a high-speed bridge structure stress monitoring embedded assembly. Background With the rapid development of traffic industry, a high-speed bridge is used as a key node of a traffic network, and the safety and the stability of the high-speed bridge are very important. In the long-term operation process of the bridge, the bridge is subjected to the comprehensive effects of various factors such as vehicle load, environmental factors (such as temperature change and humidity influence), self-structure aging and the like, and the structural stress state can be changed continuously. If the stress of the bridge structure cannot be timely and accurately monitored, once the stress exceeds the bearing capacity of the bridge, serious accidents such as bridge diseases and even collapse are extremely likely to be caused, and huge threats are formed to the life and property safety of people. Therefore, the method has important significance in real-time and accurate monitoring of the structural stress of the high-speed bridge. At present, in the field of bridge structure stress monitoring, a pre-buried assembly is often adopted to monitor the internal stress of a bridge. Conventional embedded assemblies have exposed a number of problems in practical applications. For example, due to the rigid structural design of part of the embedded assembly, the bridge structure cannot be well adapted when the bridge structure is slightly deformed, so that inaccurate stress transmission is caused, and larger errors exist in monitoring data. Moreover, the connection mode of some embedded assemblies and the bridge body is not stable enough, and a loosening phenomenon is easy to occur under a long-term complex stress environment, so that the reliability and stability of the whole monitoring system are affected. Disclosure of utility model The utility model aims to provide a high-speed bridge structure stress monitoring embedded assembly, which aims to solve the problems that the stress transmission is inaccurate and the monitoring data have larger errors due to the fact that the rigid structural design of part of the embedded assembly provided in the background technology cannot be well adapted when the bridge structure is slightly deformed. In order to achieve the above purpose, the utility model provides a high-speed bridge structure stress monitoring embedded assembly, which comprises a rigid sleeve, wherein a flexible dowel bar is arranged at the upper end of the rigid sleeve, a plurality of horizontally arranged reinforcing steel bars are arranged on the outer wall of one side of the rigid sleeve, the top end of the flexible dowel bar is in contact with a bridge stress surface of a bridge body, a cavity is arranged in the rigid sleeve and is used for installing a stress sensor, stress generated by the bridge stress surface is transmitted to the stress sensor through the flexible dowel bar, a wiring terminal is arranged at the bottom end of the stress sensor, and the wiring terminal is externally connected with data acquisition equipment. The rigid sleeve is arranged to provide a stable supporting structure, the flexible dowel bar transmits stress of the stress surface of the bridge to the internal stress sensor, the reinforcing steel bar reinforcing component is connected with the bridge body, and the terminal is used for realizing data transmission. Preferably, the steel bars are arranged in parallel and equidistant from top to bottom, one end of each steel bar is embedded into the bridge body, and the other end of each steel bar is welded and fixed with the outer wall of the rigid sleeve. The steel bars arranged in parallel and equidistant mode uniformly disperse stress, and the welding fixation ensures the connection strength. Preferably, the rigid sleeve is made of carbon steel material, and the flexible dowel bar is made of stainless steel material. The carbon steel rigid sleeve provides high-strength support, and the stainless steel flexible dowel steel has flexibility and corrosion resistance. Preferably, the lower end of the flexible dowel bar is positioned in the rigid sleeve and is provided with a limiting protrusion, the upper end of the rigid sleeve is detachably provided with a limiting cover, the limiting cover limits the limiting protrusion, and the middle part of the limiting cover is provided with a hole site for the flexible dowel bar to pass through. The limiting protrusion is matched with the limiting cover, and the displacement range of the flexible dowel bar is restrained. Preferably, the top of the rigid sleeve is provided with a threaded end, the inner wall of the limit cover is provided with an internal thread, and the threaded end is in threaded connection with the limit cover. The threaded connection mode is convenient for assembly and di