某大跨度钢箱连续梁支撑体系仿真优化分析

Simulation Optimization Analysis on Support System of Long-span Steel-box Continuous Girder

以某大跨度钢箱连续梁支撑体系为研究对象,通过有限元计算和理论分析,对比研究了3种边界条件下钢箱连续梁的受力性能,并确定了钢箱连续梁合理支撑体系的仿真计算模拟方法。研究结果表明:考虑支座刚度、完全释放支座转动能够更为准确地模拟结构支座体系的实际受力状态;在钢箱连续梁的仿真分析中,考虑支座刚度、完全释放支座转动是非常必要的。

Taking the support system of a long-span steel-box continuous girder as the study object, and according to the finite element calculation and the actual theoretical analysis, the article contrasts and studies the load-carrying performances of steel-box girder under three boundary conditions, and confirms the simulating calculation analogy method of the reasonable support system for the steel-box girder. The study results show that the consideration of support stiffness and the completely releasing of support rotation can more accurately simulate the actual load-carrying state of structure support system, and are very necessary in the simulation analysis of steel-box continuous girder.