荷载试验加载方案设计的安全性分析

桥梁荷载试验通常是一种非损伤性试验,其在桥梁结构的承载力测试中起着至关重要的作用。所以我们要做到在整个试验过程中,桥梁结构是安全的。目前采用加载效率去控制加载是否有效,但是在实际操作过程当中,往往会出现测试截面的加载效率在安全范围之内,其它控制截面会出现加载效率不在规范要求范围之内。基于这种情况,文章结合工程实例,对试验方案设计中的加载方案设计进行安全分析,在规范要求范围内,不断增大某一测试控制截面的加载效率,有些控制截面出现不同程度的超限问题。该结论能为荷载试验加载方案设计提供参考依据。

Bridge load test is usually a kind of non-destructive test, which plays an important role in the bearing capacity test of bridge structure, so we should make the bridge structure safe in the whole test process. At present, the loading efficiency is used to control whether the loading is effective or not, but in the actual operation process, the loading efficiency of the test section is often within the safe range, and the loading efficiency of other control sections is not within the scope required by the specification. Based on this situation, this paper analyzes the safety of the loading scheme design in the test scheme design with an engineering example, and increases the loading efficiency of a certain test control section in the range required by the code. Some control sections have different degrees of overrun problems. This conclusion can provide a reference for the design of load test loading scheme.