索拱结构中拉索预应力模拟方法及比较

Method and Comparison of Cable Prestressing Simulation in Cable-arch Structure

以某索拱架式移动机库屋盖为例,分别基于直接法和降温法进行拉索预应力模拟,并求解杆件截面正应力和拉索轴应力大小及误差。结果表明两种方法结果相差极小,降温法适用于模拟施工顺序,但Instate法因只能在第一荷载步使用而不能用于施工顺序模拟。

Taking the roof of a cable arched mobile hangar as an example,the prestressing simulation of the cable is carried out based on the direct method and the cooling method respectively,and the normal stress of the section and the stress and the error of the cable shaft are solved. The results show that the results of the two methods are very small,and the cooling method is suitable for simulating the construction sequence,but the Instate method can only be used in the first load step and cannot be used in the construction sequence simulation.