一、引论 1.应用背景 单层混凝土工业厂房是目前我国面积最大,覆盖资产最多的结构之一。它们中的大部分厂房已使用了二、三十年。由于设计标准的不同,施工质量的差异以及使用过程中厂房结构的损坏程度不一,使得不同厂房的安全性变异很大,加之我国近期的政策是以老厂改造为 I. Introduction 1. Application Background The monolayer concrete industrial factory is currently one of the largest structures in China with the largest number of covered assets. Most of them have been in use for two to three decades. Due to different design standards, differences in construction quality and damage to the structure of the workshop during use, the safety of different factories varies greatly, and the recent policy in China is to reconstruct the old factory.