多孔无桥台斜腿刚架桥是一种高次超静定结构,温变、收缩、桥墩变位等常常成为控制结构设计的重要因素,为了解决这一问题,结合具体工程实践,提出了多孔无桥台斜腿刚架桥的设铰方法,并对设铰前后多孔无桥台斜腿刚架桥的内力进行了分析,得出了合理的设铰位置。 Porous bridge without frame is a kind of high-order statically indeterminate structure. Temperature variation, shrinkage and displacement of pier are often the important factors in the design of control structure. In order to solve this problem, combined with the concrete engineering practice, The method to set the hinge of the multi-hole non-abutment inclined-legged rigid frame bridge is analyzed, and the internal force of the multi-hole non-abutment inclined frame with rigid legs is analyzed. The reasonable hinge position is obtained.