上海西岸油罐艺术中心加固改造设计

Reinforcement Design of Shanghai West Bund Oil Tank Art Center

为满足改造后建筑的各项功能需求,需对现存的5个储油罐进行升级改造。部分油罐需在罐体内部新增楼层并在罐体表面开设门窗洞口,部分罐体需将罐顶拆除。采用平面应力单元和板单元建立三维空间有限元模型,分析油罐在风荷载、温度和地震等作用下的结构响应。通过加固前、后罐体应力和变形的对比分析,考察油罐加固的效果。通过屈曲模态分析和考虑初始缺陷的几何非线性分析,研究罐顶开洞对结构的整体稳定性产生的影响,确定罐顶的承载力和极限变形能力。结果标明:油罐在不均匀温度应力及地震作用下,变形和应力均较小;采取相应的加固措施可有效减小罐体的应力和变形;通过加固前、后的对比分析表明所采取的加固措施是有效的、合理的。

In order to meet the functional requirements of the retrofit building, the existing five oil tanks need to be upgraded. New floors need to be added inside some oil tanks, doors and windows need to be added on the surface of the tanks,the roof of some tanks need to be removed. A three-dimensional finite element model is established by using plane stress element and plate element to analyze the structural response of oil tank under wind load, temperature and earthquake. The effect of tank reinforcement is investigated by comparing the stress and deformation of the tank before and after reinforcement. Through the analysis of buckling mode and geometric nonlinear analysis considering the initial defect, the influence of canopies opening on the overall stability of the structure is studied, and the bearing capacity and ultimate deformation capacity of the tank roof are determined.The results show that the deformation and stress of the tank under the effect of uneven temperature stress and earthquakes are small, and the corresponding reinforcement measures can effectively reduce the stress and deformation of the tank. The comparative analysis before and after reinforcement indicates that the adopted Reinforcement measures are effective and reasonable.