Bridge load testing method

Abstract

The invention belongs to the technical field of bridge detection, and discloses a bridge load testing method. The bridge load testing method comprises the following steps that 1, a dynamic weighing system is arranged at the bridge head of a bridge, and the measuring content comprises the axle distances and the axle weights of passing vehicles; 2, a plurality of shooting devices are arranged on the bridge for full-bridge-face covering shooting, and position distribution of the vehicles on the bridge face is measured; 3, sensors are arranged on the bridge, and static load parameters and dynamic parameters of the bridge structure are measured; 4, the data acquisition time of the full-bridge-face shooting devices in the step 2 and the data acquisition time of the sensors in the step 3 are synchronized; 5, the load bearing capacity of the bridge is evaluated, wherein the step 1 to the step 5 are conducted under the normal traffic condition of the bridge. According to the method, the test cost is reduced; due to the fact that traffic does not need to be interrupted or blocked, continuous multi-time testing can be conducted, the real-time performance, the continuity and the data volume of testing are guaranteed, and then the load test data integrality and the analysis accuracy are improved.

Description

technical field [0001] The invention belongs to the technical field of bridge detection. Background technique [0002] With the rapid development of new materials and construction technology, my country's bridge construction has achieved world-renowned achievements. The large-scale construction and application of bridges requires technicians to attach great importance to the safety of bridges. During the period from commissioning to dismantling, bridges are subject to a large number of loads and complex changes. During the service life of the bridge, the long-term load of the bridge structure and the degradation of the internal material properties of the bridge lead to insufficient bearing capacity of the bridge. This change reflects the change of the bearing capacity of the bridge during long-term use. Therefore, the bridge load test It is an important means to study and analyze the health status of bridges. The existing load test methods are mainly: blocking the traffic ...

AI Technical Summary

Problems solved by technology

However, due to the need to block traffic in existing load tests, the test time is tight and the test period is long. Generally, a load test is carried out once a year or many years, resulting in less and incomplete data obtained from the test, which affects the bridge load. The accuracy and real-time performance of the test, in addition, closed traffic also brings a lot of inconvenience to the use of bridges and traffic

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