某商业建筑改造为医院的方案分析

Analysis on the plan of transforming a commercial building into a hospital

在对既有框架结构功能改造加固过程中,对比了直接加固法和增设BRB支撑加固法方案。在多遇地震工况下分析了直接加固法,通过考虑楼梯刚度的方法,满足既有框架结构的抗震性能指标,给出了加固工作量。对于增加BRB支撑加固法,分析了多遇地震下增设支撑的抗震性能指标及加固工作量,明确了增设BRB支撑加固的可行性。同时通过结构动力弹塑性计算,分析增设BRB支撑加固结构在罕遇地震的抗震性能,明确了增设支撑的有效性。最后通过对比了两种加固方案的加固工程量,分析加固方案的经济性。明确了增设BRB支撑的加固方案可行性、有效性及经济性。

In the process of functional reconstruction and reinforcement of the existing frame structure,the direct reinforcement method and the addition of BRB support reinforcement method are compared.Under the condition of frequent earthquake,the direct reinforcement method is analyzed.By considering the stiffness of stairs,the seismic index of the existing frame structure is met,and the reinforcement workload is analyzed.For the reinforcement method of adding BRB support,the seismic index and reinforcement workload of adding BRB support under frequent earthquakes are compared and analyzed,and the feasibility of adding BRB support for reinforcement is clarified.At the same time,the structural dynamic elastoplastic calculation software is used to analyze the seismic performance of the reinforced structure with BRB bracing in rare earthquakes,and the effectiveness of the additional bracing is clarified.Finally,by comparing the reinforcement workload of the two reinforcement schemes,the economy of the reinforcement scheme is analyzed.The feasibility,effectiveness and economy of the reinforcement scheme of adding BRB support are clarified.