基于荷载试验的连续刚构桥的运营状态评估

Evaluation of the Continuous Rigid Frame Bridge in Service Based on Static Load Test

为了及时了解运营桥梁的使用状态,并且为桥梁的后期评价作准备,针对某高速公路连续刚构桥进行了外观状况检查,通过采用考虑桥梁各部件权重的综合评定法,判定桥梁的运营状况:针对运营期间桥梁的承载能力情况,通过结构分析,确定静载试验方案,利用现场加载试验测试桥梁的挠度和应变,并对试验数据进行对比和分析,对桥梁结构做出总体评价,为桥梁的运营管理和养护提供技术依据,也为同类桥梁的运营状态评估提供参考.

In order to understand the state of the bridge in service and to prepare for the later evaluation of bridges, the special examinations are carried out on the continuous rigid frame bridge. This inspection is mainly consist of the bridge appearance checking. By means of comprehensive evaluation method in considering weight of bridge components, the conditions of the bridge in service is determined. And then for evaluating bearing capacity of this running bridge, the load test is put to effect by analysis of structures. Through the load test, the deflection and the strain of this bridge are get. Then comparing and analyzing the test data,the state of this bridge is evaluated. This article could provide reference for operation administration and maintenance of similar bridge.