整体式简支板桥纵向裂缝分析

摘要

通过对几种不同宽跨比整体式钢筋混凝土简支板桥的ANSYS有限元实体分析，总结出了这类板桥纵向贯通裂缝形成的主要原因。提出在整体式钢筋混凝土简支板桥的设计中，在满足纵向配筋要求的同时，必须增加横向配筋的数量来抵抗不得忽视的横向内力，以防止板桥出现纵向贯通裂缝。%Through ANSYS finite element analysis of simply supported slab bridge of integral reinforced concrete with several different width-span ra-tio, the main causes for longitudinal cracks formation in slab bridge are summarized. Increasing the number of transverse reinforcement is proposed in the design of simply supported slab bridge of integral reinforced concrete to resist transverse internal force, prevent longitudinal cracks and meet the re-quirements of vertical reinforcement as well.