坦拱形轻钢屋架设计参数分析及增设支撑加固方法
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（重庆市建筑科学研究院,重庆 400015）[摘要]通过分析主拱拱轴线、矢跨比、系杆刚度、截面形式等对结构受力的影响，以某厂房的拱形轻钢屋架为例，对屋架内力进行验算，分析了屋架上下弦杆内力变化规律，并提出增设支撑的加固方法。[关键词]坦拱形轻钢屋架;设计参数;增设支撑加固方法中图分类号：TU393.3 文献标识码：A 文章编号：1002-848X(2013)S1-0377-03作者简介：曹淑上，工程师，E-mail: caoshushang@163.com。Analysis of design parameters and supporting strengthening method of light steel flat arc-shaped roof structure(Chongqing Construction Science Research Institute,Abstract: Through analysis the design parameters of arch axis, rise-span ratio, stiffness of tie bar and section forms, taking a light steel arched roof as an example, the internal forces on the roof and the changes of the internal force of to player haulm and bottom layer haulm was analyzed, and supporting strengthening method was proposed.Keywords: light steel flat arc-shaped roof structure; design parameter; supporting strenthening method
