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钢筋混凝土撑架连续板桥的结构分析方法,曾初步提出采用弹性支承连续板计算。但是,对于撑架与桥板用不同的夹角以及两者用不同的刚度比,使用上述简化计算方法,尚需要提供确定弹性支承折减系数的试验依据。为此在15米、20米、30米现场静载试验和结构分析试验的基础上,又在西安公路学院结构试验室作了模拟30米的1:1 0的微粒钢丝混凝土模型结构分析试验,分别制作30°、45°、60°等三种不同的撑架与桥板的夹角每一个角度又作了三次不同的刚度变化。本文根据现场试验数据和模型试验数据,提出该桥型在活载作用下的结构分析方法。
The structural analysis method of continuous slab of reinforced concrete bracing has been initially proposed using elastic support continuous plate calculation. However, for the different angles between the bracket and the bridge plate and the different stiffness ratios between the two, the test basis for determining the reduction factor of the elastic support needs to be provided by using the above simplified calculation method. Therefore, based on the field static load test and structural analysis test of 15m, 20m and 30m, the structure analysis of 1: 10 micro-particle steel wire concrete model of 30m was simulated in Xi’an Jiaotong University Structure Laboratory. Respectively, making 30 °, 45 °, 60 ° angle of the three different brackets and the angle of the bridge made another three different stiffness changes. Based on field test data and model test data, this paper presents a structural analysis method of the bridge under live load.