摘要
介绍了一直径161 m的双层超大环形支撑在软土地区的设计、分析与实践。基于Plaxis软件的数值分析方法采用HSS模型对环形支撑在荷载作用下的变形特征进行了理论计算,并与实际检测数据进行对比分析。最后,基于本工程的特点与难点,对基坑施工、开挖过程中的施工要点和风险控制措施进行了总结。结果表明:环形支撑可有效节约工程造价与工期,对周边环境变形有较好的控制效果;采用HSS模型,选择合适的设计参数,能有效模拟环形支撑深基坑变形,实测结果与有限元分析相匹配,具有很高的工程实用价值。
The design,analysis and practice of a foundation pit with a 161 m diameter super large ring supporting structures in soft soil areas were presented.Based on the numerical analysis method of PLAXIS software,the deformation characteristics of the ring supporting structures under load are theoretically calculated by using HSS model.The results of the numerical analysis were compared with the measurement.Finally,based on the characteristics and difficulties of the project,the construction points and risk control measures in the process of foundation pit construction and excavation are summarized.The results show that ring supporting structures can effectively save the project cost and construction period,and has a good control effect on the deformation of the surrounding environment.The deformation in excavation with ring supporting structures can be effectively simulated by the HSS model which appropriate model parameters.The simulated results are consistent with the measured results,which has a good engineering practical value.
作者
沈蒙
SHEN Meng(SGIDI Engineering Consulting(Group)Co.,Ltd.,Shanghai 200093,China)
出处
《广东土木与建筑》
2023年第3期42-46,82,共6页
Guangdong Architecture Civil Engineering
关键词
软土
超大直径
环形支撑
深基坑
数值模拟
HSS模型
soft soil
super large diameter
ring supporting structures
deep foundation pit
numerical simulation
HSS model
作者简介
沈蒙(1988-),男,硕士研究生,工程师,主要从事岩土工程勘察、设计工作。E-mail:shenmeng@sgidi.com。
