某钢管混凝土系杆拱桥静荷载试验

某主跨52m的钢管混凝土系杆拱桥,建成后因外观质量较差而进行了现场实桥承载能力静荷载试验,利用3辆型号相同的集装箱卡车,测试该桥跨中和4分点处的荷载横向分布系数、各控制截面主要测点的应变影响线以及在基本荷载作用下各控制截面主要测点的应变、挠度等。本文简要介绍了该桥的静荷载试验的全过程,并对测试结果进行了整理分析。

Static Load Test of Concrete-filled Steel Tubular Arch Bridge

A concrete-filled steel tubular arch bridge has a span of 52m.To evaluate its working state and load carrying capacity,the bridge was tested under static loads after the bridge was constructed because of its poor appearance.Three container lorries with same carrying capacity were used.The test includes transverse load distributing coefficient of mid and quartile span of the main bridge,strain influence line of the main measuring point on critical section,strain and deflection of the main measuring point on critical section under basic load.The whole procedure of the bridge test was introduced briefly.The test data was sorted out and analyzed.