温度荷载对多跨门式刚架内力影响分析

Analysis of the influence of temperature load on the internal force of multi-span portal frame

温度对多跨门式刚架的影响与其自身刚度及约束条件有密切关系。本文基于ANSYS软件,计算了刚架温度荷载作用下的弯矩,研究了其弯矩分布的规律,探讨了不同刚度、不同约束条件对多跨门式刚架温度内力的影响,提出通过改变截面设计来改善多跨门式刚架温度承载能力的可行性方法。

The influence of temperature on the muhi-span portal frame has close relationship with its serf-rigidity and constraint conditions. Based on the ANSYS software, the bending moment of rigid frame under temperature load action was calculated, the distributi on rules of the bending moment were studied, the influences of different rigidity and different constraints on the internal force of multi-span portal frame were discussed, and the feasibility method was proposed to improve the temperature bearing capacity of multi-span portal frame by design of variable section.