地震作用下圆柱形薄壁钢罐的启发式优化
|
摘要
圆柱形地面支持钢罐,由于其结构设计简单、静水压力下的性能较好、成本低、施工方便,常用于储存水和易燃液体。尽管有这些优势,薄壁钢罐对地震作用十分敏感。旨在对特殊结构进行简单、快速和直接的抗震优化设计,避免采用如有限元或边界元法等复杂计算方法。根据欧洲规范8或希腊地震规范,利用软件进行最佳抗震设计,使得这些结构在极端抗震设计荷载作用下的稳定性满足要求。针对预设的液体体积,给出了钢罐和基础的最佳尺寸。该方法可以考虑以此为基础,在满足结构和稳定性要求的前提下,确定薄壁钢罐抗震设计的最低成本。
Cylindrical ground supported steel tanks are traditionally applied to store water and inflammable liquids due to their simple structural design , very good behavior under hydrostatic loads , low cost and easy construction.Despite these advantages , thin-walled steel tanks are sensitive to seismic loading.The aim of this work is the simplified , fast and direct optimum seismic design of these special structures , avoiding complicated computational methods such as the finite element or the boundary element methods.This objective is achieved using software developed in-house , where the optimum seismic design is achieved satisfying the stability of these structures under extreme seismic design loads according to the Eurocode 8or the Greek seismic regulation provisions.The proposed method provides with the most economical dimensions for the tank and its foundation , for a predefined , design liquid volume.The proposed method can be considered as a basis for determining minimum cost seismic design of thin-walled steel tanks that satisfy the structural and stability requirements.
Cylindrical ground supported steel tanks are traditionally applied to store water and inflammable liquids due to their simple structural design , very good behavior under hydrostatic loads , low cost and easy construction.Despite these advantages , thin-walled steel tanks are sensitive to seismic loading.The aim of this work is the simplified , fast and direct optimum seismic design of these special structures , avoiding complicated computational methods such as the finite element or the boundary element methods.This objective is achieved using software developed in-house , where the optimum seismic design is achieved satisfying the stability of these structures under extreme seismic design loads according to the Eurocode 8or the Greek seismic regulation provisions.The proposed method provides with the most economical dimensions for the tank and its foundation , for a predefined , design liquid volume.The proposed method can be considered as a basis for determining minimum cost seismic design of thin-walled steel tanks that satisfy the structural and stability requirements.
引文
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心