高烈度地区重载大跨度钢桁架连廊结构设计分析

Structural design of a heavy haul large-span steel truss corridor in high intensity area

以某高烈度地区工业用钢桁架连廊为例,针对大跨度和重载等特点,应用MIDAS/Gen2020进行结构相关计算。该钢桁架结构在设防烈度地震(即中震)作用下,关键构件满足正截面不屈服及其受剪承载力弹性的要求,以实现"小震不坏、中震可修、大震不倒"的抗震目标,得到了合理的计算结果,既保证了建筑及工艺专业的要求,又能很好的控制了挠度,满足正常使用要求。介绍项目的设计过程及关键点,供类似工程参考。

This paper introduces steel truss corridor in a high intensity area as an example.For the characteristics of large span and heavy load.using Midas/Gen2020 carry out structural correlation calculation.The steel truss structure is under the action of the fortification intensity earthquake(IE,moderate earthquake),the key components meet the requirements of non-yielding of the front section and the elasticity of the shear capacity,so as to achieve"small earthquakes are not damaged,moderate earthquakes can be repaired,and large earthquakes are not broken.The anti-seismic target of"has obtained reasonable calculation results,which not only guarantees the professional requirements of architecture and technology,but also can well control the deflection and meet the requirements of normal use.This article introduces the design process and key points of this project for reference of similar projects.