并列双幅桥面斜拉桥支承体系的平面等效模拟

Equivalent Plane Simulation of Bearing System for Cable-Styed Bridge with Paralled with Desk

并列双幅桥面斜拉桥属于空间体系结构,理应应用三维空间有限元程序来完成其静力分析.作者采用了等效双悬臂梁的机构进行平面等效模拟后,使塔、墩、梁、索四者处于共平面工作,从而可以应用常用的平面杆系专用程序,使计算大为简化,且具有较满意的精度.

The cable stayed bridge with paralled twin desk belongs to the space structural system, statical analysis of which are usually completed with aid of three dimension space finite element computational program. In order that the towers, piers, girders and cables are worked fictitiously in the same plane,the author substituted the equivalent twin cantilever beam for true bearing system. After this simulation the specific computational program for plane structural system may be applied, the computation simplified greatly and the results have satisfactory precision.