CN211824397U

CN211824397U - Single-column pier bridge gradient real-time monitoring and early warning device

Info

Publication number: CN211824397U
Application number: CN202020738074.6U
Authority: CN
Inventors: 朱大昌; 杜宝林; 崔翱东
Original assignee: Guangzhou University
Current assignee: Guangzhou University
Priority date: 2020-04-27
Filing date: 2020-04-27
Publication date: 2020-10-30
Anticipated expiration: 2030-04-27

Abstract

The utility model relates to a single column mound bridge gradient real-time supervision and early warning device. 1. A single-column pier bridge inclination real-time monitoring and early warning device mainly comprises a detection body structure with a topological structure, four detection columns which are symmetrically distributed, four strain gauges which are symmetrically adhered to the detection columns, an upper installation surface, an installation positioning hole and a lower installation surface. The detection body structure is constructed and installed through four symmetrically distributed installation positioning holes, contacts with a bridge through an upper installation surface and bears the load from the bridge, and senses the load change condition of the bridge through four symmetrically distributed detection cylinder deformation. 2. Four strain gauges are symmetrically adhered to the four symmetrically distributed detection cylinders and used for sensing elastic deformation of the detection cylinders, and real-time monitoring and early warning of the gradient of the single-column pier bridge are achieved through the Wheatstone bridge circuit.

Description

Single-column pier bridge gradient real-time monitoring and early warning device

Technical Field

The invention relates to the technical field of construction equipment, in particular to a single-column pier bridge inclination detection device.

Background

In the construction of urban highway bridges and highway bridges, because of the influences of terrains, ground objects, floor space, urban development planning and the like, the lower pier columns of the urban highway bridges and highway bridges usually adopt a single-column pier supporting mode so as to reduce the floor space, improve the layout of lower structures, reduce the position conflict between a bridge foundation and an underground building, increase the visual field and beautify the bridge shape. However, the design or construction of bridge structure engineers often focuses on the bending and shearing resistance of the bridge superstructure, and the consideration of the outward or inward deflection of the main beam caused by the uneven distribution of bridge load to cause the support base to be empty or even the body of the beam to overturn is unpredictable. From the current situation of traffic, the overload phenomenon generally exists in the heavy-duty vehicles in parts of domestic areas at present, the overload of individual vehicles even reaches 200% -300%, and if the traffic jam occurs, when a large number of heavy-duty vehicles stay on an outer lane, the upper main beam is easy to be overturned integrally. In order to overcome the occurrence of a large-scale malignant event of bridge overturning caused by severe unbalance loading, it is necessary to detect and monitor the unbalance loading condition of the bridge in real time.

The adoption of the single-column pier bridge reinforcing device is one of the methods for preventing the bridge from overturning. Two semi-annular anchor ears with cantilevers are added into a steel structure support and are connected with two sides of a pier through high-strength bolts, and CN201810268700.7 provides an overturn-preventing reinforcing device and an installation method for a single-column pier bridge. Under the condition that space under a bridge is limited or conditions are not allowed, the medium-iron fourth exploration design institute group limited company adopts a mode of additionally arranging a steel cap beam, and discloses an anti-overturning reinforcing device (CN201310363760.4) of a single-column pier bridge. CN201720890693.5 discloses an anti-overturning device for single-column pier bridge with hydraulic device. CN201611082524.5 discloses a pier-type bridge anti-deflection device by adopting a mode of an elastic component and a displacement follow-up plate in an anchoring bottom plate. There are many relevant patents for bridge monitoring, for example: a bridge state monitoring device (CN201721649306.5), a bridge deformation detection system (CN201620877007.6), an intelligent detection device (CN201810147300.0) based on bridge safety performance detection and the like for the field of municipal bridge buildings. However, many patents lack the ability to measure in real time for environmental factors (partial loads) and make early warnings in time.

Disclosure of Invention

The utility model aims at overcoming current single-column mound bridge monitoring system not enough to bridge gradient monitoring real-time and early warning, providing a single-column mound bridge gradient real-time supervision and early warning device.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a single column mound bridge gradient real-time supervision and early warning device, the device mainly comprises detection body structure (1) that have the topology configuration, four symmetric distribution's detection cylinder (3), four symmetries paste foil gage (6) on detecting the cylinder.

The utility model has the advantages that: 1. the single-column pier bridge gradient monitoring body structure is designed by adopting a topological optimization method, a detection body structure (1) with a topological structure and four detection cylinders (4) which are symmetrically distributed are obtained, wherein the detection body structure (1) with the topological structure is composed of four detection cylinders (4) which are symmetrically distributed, an upper mounting surface (2), four mounting positioning holes (3) which are symmetrically distributed and a lower mounting surface (5), the detection body structure (1) is constructed and mounted through the four mounting positioning holes (3) which are symmetrically distributed, the upper mounting surface (2) is in contact with a bridge and bears load from the bridge, and the change condition of the load of the bridge is sensed through the deformation of the four detection cylinders (4) which are symmetrically distributed. 2. Four strain gauges (6) are symmetrically adhered to the four symmetrically-distributed detection cylinders (4) and used for sensing the elastic deformation of the detection cylinders and achieving real-time monitoring and early warning of the gradient of the single-column pier bridge through a Wheatstone bridge circuit.

Drawings

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

FIG. 1 is a diagram of a test body having a topological configuration.

FIG. 2 is a schematic diagram of a symmetrically distributed detection column.

FIG. 3 is a diagram of a Wheatstone bridge detection circuit composed of strain gauges.

The figure is marked with: 1. the structure comprises a detection body structure, 2, an upper mounting surface, 3, a mounting positioning hole, 4, a detection cylinder, 5, a lower mounting surface, 6, a strain gauge, 7, a first strain gauge resistor, 8, a second strain gauge resistor, 9, a third strain gauge resistor and 10, a fourth strain gauge resistor

Detailed Description

The utility model relates to a single column mound bridge gradient real-time supervision and early warning device.

By adopting a topological optimization design method, the detection body structure with the topological configuration shown in the schematic diagram 1 is obtained, and the detection body structure is composed of four detection cylinders which are symmetrically distributed and shown in the schematic diagram 2. The detection body structure is connected with the bridge through four symmetrical construction installation positioning holes and an upper installation surface, and is connected with the single-column pier through a lower installation surface.

According to the schematic diagram 2, four symmetrical strain gauges are respectively adhered to four symmetrical detection cylinders, the four symmetrical strain gauges form a Wheatstone bridge shown in the schematic diagram 3, the elastic deformation condition of the detection cylinders is sensed through the resistance value changes of the four strain gauges, and the real-time monitoring and early warning of the bridge gradient are realized.

Claims

1. The utility model provides a single column mound bridge gradient real-time supervision and early warning device which characterized in that: a topological optimization design method is adopted to obtain a single column pier gradient real-time monitoring and early warning device composition form of a detection body structure (1) with a topological structure, four detection columns (3) which are symmetrically distributed and four strain gauges (6) which are symmetrically adhered to the detection columns.

2. The device for monitoring and warning the inclination of the single-column pier bridge in real time according to claim 1, wherein the device comprises: four symmetrically distributed strain gauge resistors form a Wheatstone bridge circuit, and real-time monitoring and early warning of the gradient of the single-column pier bridge are achieved.