再谈系杆拱桥吊杆初始张拉力的计算方法

Another Discussion on Computational Method for Analysis of Rod Initial Tension of Tie Bar Arch Bridges

提出一种系杆拱桥吊杆初始张拉力的计算方法 .此方法采用逆序法计算结构的阶段内力 ,计算中利用温度应力模拟预应力制作出较为理想的预应力结构模型 ,并用间隙单元法精确模拟了结构脱离支撑的过程 ,使得计算过程简便易行 ,计算结果精确可靠 .

This article proposes a new method to calculate the initial tension of the tie bar arch bridge steeve. In the method, the athwart order is adopted for calculation of subsection internal force. An ideal original structural model is developed based on the temperature stress for simulation of prestress, and the gap element is adopted to simulate the process of divorce of the structure from support. The method is simple and precise, and it can provide a good basis for design and construction.