装配式波形钢腹板T梁横向分布系数分析

Analysis of the Lateral Load Distribution Factors of Prefabricated T Girder with Corrugated Steel Webs

基于实体单元和板单元相结合的精细有限元法,分析装配式波形钢腹板T梁的荷载横向分布情况,并与传统横向分布系数计算方法进行对比,研究不同形式的横隔板对波形钢腹板T梁横向分布系数的影响.结果表明,采用刚接板法计算四片波形钢腹板T梁结构是较为合适的方法,其中中梁横向分布系数与精细有限元法接近,边梁横向分布系数较精细有限元法大1.15倍,横隔板刚度的强弱变化对横向分布系数影响不大.

Based on the precise FEM that contains solid element and shell element, the lateral load dis- tribution of prefabricated T girder with corrugated steel webs is analyzed, which is compared with the traditional methods of lateral load distribution factors. The effects of different types of diaphragm on the lateral load distribution factors are studied. The results show that the rigid-joint-plate method is a suitable method to analyze the four pieces of prefabricated T girders with corrugated steel webs and the calculated lateral load distribution factor of the middle beam is similar to that calculated from the precise FEM. However, the lateral load distribution factor of the edge beam calculated from the rigid- joint-plate method is 1.15 times larger than that calculated from the precise FEM. The change of the diaphragm stiffness has little effect on the lateral load distribution factor.