Loading vehicle self-matching arrangement method for simply supported girder bridge load test

Abstract

The invention relates to the technical field of bridge load tests, in particular to a simply supported girder bridge load test loading vehicle self-matching arrangement method. The method comprises the following steps: establishing a simply supported girder bridge load test loading vehicle arrangement database; verifying the calculation results of two iterations before and after the fuzzy clustering target function by iterating the maximum error parameter epsilon, realizing the optimal classification of all samples in the bridge parameter sample database, and obtaining the category center of each category of samples and the corresponding theoretical loading vehicle number; when a load test is carried out, only measuring the test bridge according to parameters involved in the bridge parameter sample database, carrying out the weighted calculation according to membership values of new bridge parameter samples relative to various types of clustering centers, and determining the number of loading vehicles required by the new bridge load test, so automatic load distribution of the simply supported girder bridge load test is realized; adding the load test scheme into a sample database to update the database, and recalculating the theoretical number of the loading vehicles corresponding to the clustering center and the category.

Description

technical field [0001] The invention relates to the technical field of bridge load tests, in particular to a method for self-matching arrangement of loading vehicles for simply supported beam bridge load tests. Background technique [0002] The bridge load test is the main method to evaluate the bearing capacity and operating status of the bridge. The effect of the design load and the vehicle load is calculated by establishing a bridge finite element model, and the layout of the loading vehicles is further determined according to the loading efficiency. The selection of the number of loading vehicles becomes the load The core index of test deployment. [0003] During the implementation, according to the experience of the load test, the standard three-axle vehicle has become the main loading vehicle. When the maximum bending moment is loaded in the mid-span, the maximum bending moment is loaded in the 1 / 4 span, and the maximum shear force is loaded at the fulcrum, the rear ax...

AI Technical Summary

Problems solved by technology

At present, the load test needs to rely on the experience of technicians on the one hand, and on the other hand, it needs to conduct multiple trial calculations, resulting in obvious differences in the loading schemes of the load test, and there are many invalid calculations at the same time, which leads to a large workload and low efficiency.

With the continuous accumulation of load test cases, a lot of prior experience has been obtained, but a database that can be used for automatic arrangement of load test loading vehicles has not yet been formed to achieve self-matching of loading schemes

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