新建钢筋混凝土桥承载能力评估方法研究

Research on Evaluation Method of Bearing Capacity of Newly-Built Reinforced Concrete Bridge

以某新建钢筋混凝土特大桥为试验对象,介绍了钢筋混凝土桥承载力试验的方法及结果评定过程。通过静载和动载试验,获得了不同加载工况下桥梁各控制截面测点的挠度、应力实测值,并与相应理论计算结果进行对比分析,以此对桥梁实际承载能力做综合评价。结果表明,试验孔各测点的校验系数和实测冲击系数均满足规范要求,由此评定该桥实际承载能力满足设计要求。

Based on a newly built extra long reinforced concrete bridge,the bearing capacity testing methods and the evaluation of test data are introduced.The deflections and stresses of measuring points for different control sections are obtained by the static load test and dynamic load test under different working conditions respectively.And the test data are compared with the theoretical results to evaluate the actual bearing capacity of the bridge.The results show that the testing coefficient and the actual impact coefficient of the measuring points meet the code requirements.So the actual bearing capacity of the bridge can satisfy the design requirements.