连体砖混结构不同处理方案的抗震安全性评价

某矿山卫生院的一层砖混结构的体检楼,与南北面四层的门诊楼和病房楼连在一起,不符合抗震规范要求。为研究多种处理方案的抗震安全性和加固可行性,考虑了该一层砖混体检楼未断开,断开后未加固、断开处做加固以及新建的符合抗震设计要求的4种工况进行了基于PKPM的研究。研究表明:断开处理比未断开前能较大幅度提高结构抗震性能,而断口处进行加固处理以及按照设置了圈梁和构造柱等抗震设计规范的加固处理与仅断开不加固相比未能有效提高其结构的抗震性能。

Seismic Safety Evaluation for Linked Brick and Concrete Structure Treated by Different Programs

The one-storey physical examination house which is a brick and concrete structure in a mine hospital is linked with the four-storey outpatient building and ward building in the south and north,which does not comply with current code requirements.In order to study the seismic safety and reinforcement feasibility of different treatment programs,four working conditions of the house were all considered such as connection,unreinforcement after disconnection,reinforcement at disconnection fracture and new seismic design structure,and then they were all studied based on PKPM.The study results show that the disconnection processing could dramatically improve the seismic performance than connection,while the reinforcement at disconnection fracture and the new seismic design structure(setting ring beams and structural columns) could not effectively improve the seismic performance compared with the unreinforcement after disconnection.