(中国建筑西北设计研究院有限公司, 西安 710018)

摘要: 以 20 世纪 80 年代建造的西安永宁门月城砌体结构去承重墙加固设计为背景,首先介绍了本工程现状,然后对其进行了全面的结构检测及安全鉴定,鉴定结果表明:该结构多处不满足抗震措施,需要进行加固。 其次介绍了加固的限制条件与建筑功能需求, 限制条件为加固过程不能拆除建筑外墙,改造完成后建筑外观须保持原状;建筑功能由两层办公楼改造成为单层展览空间。 再次详细描述了采用内镶框架结构的加固方案和构件加固设计要点。 最后对结构进行小震反应谱和大震弹塑性时程分析,计算结果表明,结构加固后满足规范要求。

关键词: 砌体结构; 加固改造; 去承重墙; 内镶框架结构; 灰土井桩; 单跨框架

中图分类号:TU362 文献标志码:A 文章编号:1002-848X(2022)24-0071-06

DOI:10. 19701 / j. jzjg. XBY2218

Strengthening design of removing load-bearing wall of masonry structure for Xi’an Half Moon City

LU Ji, WEI Sunyin

(China Northwest Architectural Design and Research Institute Co. , Ltd. , Xi’ an 710018, China)

Abstract: Based on the strengthening design of removing load-bearing wall of masonry structure for Xi’an Half Moon Citybuilt in 1980s, first the current status of the project were introduced, then a comprehensive structural detection and safetyappraisal were carried out, the appraisal results show that the structure does not meet the aseismic measures in many placesand need to be reinforced. Secondly, the restriction conditions and the functional requirements of the building wereintroduced, the restriction conditions were that the external wall of the building cannot be removed during the strengtheningprocess, and the facade of the building must remain unchanged after the reconstruction, and the building function wastransformed from two storeies office building into a single storey exhibition space. Thirdly, the strengthening scheme of theinlaid frame structure and the key points of strengthening design for the component were described in detail. Finally, theresponse spectrum of the structure under small earthquake and the elastoplastic time history of the structure under largeearthquake were carried out, and the calculation results show that the structure meets the requirements of the code afterstrengthening.

Keywords:masonry structure; strengthening and reconstruction;removing load-bearing wall; inlaid frame structure; limepile; single span frame

第一作者:卢骥,硕士,高级工程师,一级注册结构工程师,主要从事复杂结构设计,Email:93026916@ qq. com。

[引用本文] 卢骥,韦孙印. 西安永宁门月城砌体结构去承重墙加固设计[J]. 建筑结构,2022,52(24):71-76. LUJi,WEI Sunyin. Strengthening design of removing load-bearing wall of masonry structure for Xi’an Half Moon City[ J].Building Structure,2022,52(24):71-76.