（1 河南五方合创建筑设计有限公司， 郑州 450003； 2 黄河科技学院， 郑州 450005）

［摘要］在水平地震作用下，主楼地下室周边设外扩地下室且与主楼地下室顶板间存在高差的结构对抗震不利。利用SAP2000建立基于多种影响因素的结构模型，并对不同处理方案进行分析。结果表明，当主楼地下室与外扩地下室顶板间存在较大高差时，应优先采用在高差处设上下连接主楼地下室与扩展地下室顶板的单梁结构方案，并对该类建筑的结构设计提出建议。

［关键词］外扩地下室； 高差； 抗震设计

中图分类号：TU318-1文献标识码：A文章编号：1002-848X(2017)05-0077-05

Seismic response analysis for the extended basement and main building basement roof with elevation difference

Chen Xianzhi1， Wang Yongwei2

(1 Henan Fivewin Architectural Design Co.,  Ltd.,  Zhengzhou 450003, China;

2 Huanghe Science & Technology College, Zhengzhou 450005, China)

Abstract:Under horizontal earthquake action, it is adverse for the structure if there is an extended basement around the main building basement and there is an elevation difference between the extended basement and main building basement roof. Software SAP2000 was used to establish structural models based on various influential factors, and different processing schemes were analyzed. The result shows if there is a big elevation difference between main building basement and extended basement roof, the scheme should be preferred that a single beam is suggested to set at the place where there is an elevation difference to connect the main building basement and extended basement roof. Some structural design suggestions were put forward for this kind of buildings.

Keywords:extended basement; elevation difference; seismic design

作者简介：陈先志，硕士，高级工程师， Email：cxzcbtgc@126.com。