某公路桥荷载试验研究

Load Test Research of Highway Bridge

依据静载试验所需工况,活荷载在设计范围内最不利桥梁安全位置,按理论公式和规范中相应的标准计算得出参数。采用了midas/civil有限元模型模拟各工况下桥梁内力和位移的变化,发现结构在试验所给荷载下的桥梁实际运行状态,分析在役桥梁工作状态下,判定其安全承载能力与设计值是否在规范允许值内,比较理论下的静、动力计算结果和实际试验结果,并结合相关规范,分析理论结果及试验结果,评价其桥梁状况。

According to the number of static load tests required to load and conditions of each wheel position vehicle arrangement, and the most unfavorable safety condition, the paper obtains the equivalent parameters based on the standards of theoretical formula and design. Simulation of the bridge Changes of internal force and displacement of each condition model have been conducted, adopting midas / civil finite element to directly understand real working state of the bridge structure under the test load. It has also tested the bridge actual bearing performance and design calculation to evaluate whether the actual bearing capacity and its performance is within design using load. With static and dynamic calculation results compared with those of the load test, and combined with the relevant specification, it has finally determined whether the structure bearing capacity and working performance meet the design and specification requirements.