基坑支护设计中若干参数的敏感性分析  

SENSITIVITY ANALYSIS OF SOME PARAMETERS IN FOUNDATION PIT SUPPORT AND PROTECTION DESIGN

作　　者：王彤 阮永芬[2] 王鹏宇 蒋海 WANG Tong;RUAN Yong-fen;WANG Peng-yu;JIANG Hai(Yunnan Yunshengda Construction Engineering Co., Ltd., 650224, Kunming, China;Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, 650500, Kunming, China)

机构地区：[1]云南云盛达建筑工程有限公司,昆明650224 [2]昆明理工大学建筑工程学院,昆明650500

出　　处：《建筑技术》2019年第3期312-314,共3页Architecture Technology

摘　　要：在基坑支护设计中,经常因部分参数取值不合理引发设计失误或因过于保守而造成浪费。根据深基坑支护结构软件对工程实例进行计算分析,对主要的且意义较模糊的设计参数如冠梁水平侧向刚度、水平抗力系数皿、支护桩嵌固深度等进行敏感性分析,得出这些参数选择如果不合理会对支护结构的内力、变形及稳定性带来影响,并为支护设计时选择参数提供参考。In foundation pit support and protection design, unreasonable value of some parameters often caused design mistakes or waste due to excessive conservativeness. Based on calculation and analysis of practical engineering cases by using deep foundation pit support and protection structure software, this paper analyzed the sensitivity of some major design parameters which are not clearly defined, such as top beam horizontal lateral rigidity, horizontal reaction coefficient m and embedding depth of supporting pile, etc., and discussed the influence of unreasonable value of these parameters on internal force, deformation and stability of supporting structure, providing references for parameter value selection in support and protection design.

关 键 词：基坑支护 敏感性分析 水平侧向刚度 嵌固深度 

分 类 号：TU473.2[建筑科学—结构工程]