波纹腹板H型钢梁变形性能

Deformation performance of girders with corrugated webs

通过分析波纹腹板H型钢梁的弹性受力特点及剪切变形与弯曲变形的比例关系,提出对于此类型钢梁在计算变形时必须考虑剪切的影响,并通过试验和有限元模拟验证了上述结论。随后对各个构件的荷载-位移曲线分析得到了构件的延性系数,证明若设计合理,构件将具有较好的剪切强度和剪切延性,但是当构件为弯曲破坏控制时,构件延性一般。根据上述结论,提出了若干设计建议。

By analyzing the loading characteristic and the proportion relation between shear deflection and bending deflection of girders with corrugated webs under elastic range, it is proposed that the shearing deformation must be taken into account, which is validated by the results of tests and finite element method. Then the ductility factors are got from load-deformation curves of tests, which show the members can possess outstanding shearing strength and ductility, provided the designs axe reasonable. But, if the member strength is controlled by bending, the ductility will be general. Based upon the above conclusions, some design proposals are put forward.