某钢结构栈桥变形异常问题分析

Analysis of abnormal deformation of a steel structure trestle bridge

针对某既有工业类钢结构栈桥项目的变形,根据现场观察、调查了解、现场检测、结构体系分析,推测出产生该变形的原因后,在不增加额外荷载和约束的前提下,通过计算模型的分步施工来实现对现状变形的拟合,进而可以对构件的承载力、整体结构的安全性作出更真实有效的分析,该方法对于既有建筑的变形分析是一种比较实用的方法。

In response to the deformation of an existing industrial steel structure trestle project,based on on-site observation,investigation,on-site inspection,and structural system analysis,the cause of the deformation is inferred.Without adding additional loads and constraints,the step-by-step construction of the calculation model is used to achieve a fitting of the current deformation,which can provide a more realistic and effective analysis of the bearing capacity of the components and the safety of the overall structure.This method is a relatively practical method for deformation analysis of existing buildings.