(启迪设计集团股份有限公司, 苏州 215021)

摘要: 基于现代设计理念的中小学学校建筑设计越来越趋于平面布置教学功能综合体化,导致结构体系错综复杂,合理地设置结构防震缝至关重要. 通过若干学校工程实际案例,总结出了具有可实施性的设缝原则. 设缝后的部分结构单元仍具有楼板连接薄弱、局部单方向单跨框架、结构超长以及结构类型特殊等不规则性问题. 根据相应结构单元的特点,采取进一步抗震加强措施. 对楼板薄弱部位按中震不屈服工况进行应力分析并相应加大板厚、加强配筋;对局部单跨框架采取抗震等级提高一级及性能化设计的措施;对超长单体设置后浇带并进行温度应力分析;对特殊结构类型采用通用有限元软件进行分析设计. 结果表明,对平面布置不规则的学校建筑,以上抗震设计对策是可行的、有效的.

关键词: 中小学学校建筑; 平面布置不规则; 防震缝; 设缝原则; 抗震加强措施

中图分类号:TU318. 2 文献标志码:A 文章编号:1002⁃848X(2022)07⁃0123⁃08

DOI:10. 19701 / j.jzjg.SZY2128

Anti⁃seismic design countermeasures of primary and secondary school buildingswith irregular plane layout

WU Jianliang, ZHANG Min, XU Fan, WANG Bin, CAO Minjie

(Tus⁃Design Group Co., Ltd., Suzhou 215021, China)

Abstract: The architectural design of primary and secondary schools based on modern design concepts is becoming moreand more integrated in the layout of teaching functions, resulting in intricate structural systems, and it is very important toset structural seismic joints reasonably. Through several actual cases of school engineering, the principle of practicable seamsetting was summarized. Some structural units after setting joints still have irregularities such as weak floor connection, localsingle⁃direction single⁃span frame, super⁃long structure and special structure type. According to the characteristics of thecorresponding structural units, further seismic strengthening measures shall be taken. Stress analysis was carried out on theweak parts of the floor slab according to the non⁃yield condition of the medium earthquake, and the slab thickness andreinforcement were strengthened accordingly; the seismic grade of the local single⁃span frame was improved by one leveland the measures of performance⁃based design were adopted; the post pour belt was set for the super⁃long single⁃span frameand temperature stress was analyzed; general finite element software was used to analyze and design special structural types.The results show that the above seismic design countermeasures are feasible and effective for school buildings with irregularplane layout.

Keywords:primary and secondary school building; irregular plane layout; seismic joint; principle of setting joints; seismicstrengthening measure

第一作者:吴建良,硕士,高级工程师,主要从事结构设计工作,Email: 390843018@ qq.com.

[引用本文] 吴建良,张敏,徐凡,等. 平面布置不规则中小学学校建筑的抗震设计对策[ J]. 建筑结构,2022,52(7):123⁃130. WU Jianliang,ZHANG Min,XU Fan,et al. Anti⁃seismic design countermeasures of primary and secondaryschool buildings with irregular plane layout[J]. Building Structure,2022,52(7):123⁃130.