A Method for Evaluation of Bridge Field Static Load Test

Abstract

The present invention relates to a bridge field static load test evaluation method, which is mainly a method for evaluating bridge bearing capacity and applicability through field static load test; comprising the following steps: (1) determining the specific content of preparatory work for collecting relevant data (2) Establish a reasonable and accurate finite element model of the bridge structure according to the collected data; (3) According to the calculation and analysis results of the internal force and stress of the bridge under constant and live loads, clarify the theoretical force safety and live load of the bridge Stress characteristics; (4) Combining with the traditional key section of the bridge, determine the bridge test section, and complete the static load test program design; (5) Bridge site static load test and process data (6) Research and set the evaluation interval corresponding to the test evaluation index (7) Make a reasonable and comprehensive evaluation of the structural performance of the bridge. The evaluation method and index of the invention can more effectively and detailedly indicate the actual bearing capacity and applicability of the bridge, and improve the rationality and accuracy of the evaluation results.

Description

technical field [0001] The invention relates to the field of bridge bearing capacity tests, in particular to an evaluation method for bridge static load tests on site. Background technique [0002] At present, the number of diseased bridges on various traffic lines is huge, and the task of bridge inspection and evaluation is becoming increasingly heavy. At present, the management and maintenance status of existing bridges is worrying, and sudden collapse accidents of bridges in operation at home and abroad continue to occur. On July 14, 2011, the bridge deck at the northern end of the Wuyishan Gongguan Bridge in Fujian suddenly broke and collapsed; on July 15, 2011, part of the bridge deck on the approach bridge of the Third Qianjiang Bridge suddenly collapsed; on August 1, 2007, a bridge in Minnesota, USA collapsed and many more. Once a collapse accident occurs during operation, it will cause huge property damage, and may lead to casualties and line blockage, as well as b...

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the deficiencies of the existing bridge static load test evaluation methods, a new bridge static load test evaluation method is proposed. According to the calculation analysis and test data, three evaluation indicators and their evaluation limit system are constructed to overcome the existing evaluation methods. Technical issues with unreasonable and incomplete assessments and limited assessment conclusions

To overcome the technical problem that the current static load test of bridges cannot reasonably evaluate the bearing capacity and applicable performance of bridges

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