关于钢柱对接偏差引起的柱承载力分析

某工程在施工过程中,柱子对接时出现超过规范允许值的偏差。对格构柱分肢的强度、稳定承载能力和格构柱整体承载力进行分析。结果表明,柱偏位使构件的计算长度系数发生改变,同时产生了附加弯矩;对分肢构件进行轴压下弹塑性分析得知,偏位部位容易产生应力集中,因此,加固方案应该在消除应力集中方面采取相应措施。

ANALYSIS OF COLUMN BEARING CAPACITY CAUSED BY STEEL COLUMN CONNECTION DEVIATION

In the construction process of one project, the column connection deviation appeared that exceeds the standard allowable value. It analyzes strength and stable bearing capacity of the branches of lattice column, and of the whole bearing capacity of lattice column. Then it indicates that column offset changes the effective length coefficient of construction member and produces additional bending moment. By elastic-plastic analysis of axial compressed branches of construction members, the result is obtained that the offset parts are easy to produce stress concentration. So strengthen scheme should take measures to eliminate stress concentration.