Reliability Evaluation Analysis of Fengda Bridge Service Life in High-tech Zone
In order to evaluate the reliability of the bridge during its normal service life and ensure the safety,stability,and durability of the bridge structure during subsequent use,static and dynamic load tests were conducted on Fengda Bridge in the jurisdiction of the High-tech Zone.During the static load test,the actual structural performance and working state are evaluated by measuring the stress and deflection of the bridge control section under the test load,and comparing them with theoretical values.The natural vibration char-acteristics and dynamic response of bridge structures are measured through dynamic load tests,and the actual dynamic performance of the structure is evaluated.The actual bearing capacity of the bridge is evaluated through the comprehensive test results to provide the o-riginal data for the follow-up work of the bridge.Under the test load,the strain and deflection calibration coefficients of the main test sections of the 2#and 3#spans of the Fengda Bridge are both less than 1.0,indicating good structural dynamic performance.The bear-ing capacity of the 2#and 3#spans of the Fengda Bridge meets the requirements for normal use of automotive loads(City-A level)specified in the Urban Bridge Design Load Standard(CJJ 77-98).According to the requirements of the Technical Standards for Urban Bridge Maintenance(CJJ 99-2017),daily maintenance and management work of Fengda Bridge is enough.
万方数据
维普
