合理拱轴线三铰拱平面外稳定分析

Lateral stability analysis of triple hinged arch with rational arch axis

针对工程中常用的实腹式钢结构三铰拱的平面内和平面外的稳定承载力采用能量变分法进行了分析,得出了各种情况下的解析解,并与传统中常采用的分析模型作了对比性分析,提出了在工程实际中便于运用的判断方法.

The stability load both inside and outside the plane of triple hinged arch in solidspandrel steel structure applied in the engineering is analysed by energy variational method,and analytic solutions in different conditions are given.Compared with the traditional analysis model,the assessing method which is easy to use in the actual engineering is proposed.