论文部分内容阅读
对于双索面斜拉桥的荷载横向分布计算,通常采用杠杆法。为了验证计算方法的准确性,文章针对一座采用双边箱的混凝土斜拉桥,进行了1∶20的有机玻璃节段模型试验。试验模型除了尺寸与实桥相似外,还尽量模拟了实桥的拉索边界条件。通过不同荷载工况的加载测试,得到了节段模型中应力数据,从而推算出荷载横向分布系数。对于试验模型,还通过有限元进行了同步计算。通过试验和有限元计算表明,对于该小边箱主梁,可以近似采用杠杆法计算横向分布系数。
For the calculation of transverse load distribution of double cable plane cable-stayed bridge, the lever method is usually adopted. In order to verify the accuracy of the calculation method, a 1:20 plexiglass section model test was carried out for a concrete box-stayed bridge with double box. In addition to the experimental model size and real bridge similar, but also try to simulate the real bridge cable boundary conditions. Through the loading test of different load conditions, the stress data in the segment model are obtained, and the lateral load distribution coefficient is deduced. For the experimental model, simultaneous calculation is also done by finite element method. Through the experiment and finite element analysis, it is shown that the horizontal distribution coefficient can be approximated by the lever method for the small side box girder.