软土地区紧邻既有建筑物地库深大基坑支护设计与分析
摘要:上海地区③层淤泥质粉质黏土和④层淤泥质黏土具有含水率高、流塑状态、高压缩性和强度低的特点，属于典型的软土分布区。结合工程实例，介绍了软土地区临近既有建筑物地库的深大基坑工程的设计要点，并通过理论计算、数值模拟和实施过程的监测进行对比分析。结果表明：对于软土地区深大基坑，通过围护结构形式、支撑体系的合理选型，正确制定地下水处理方式和施工工况，并加强基坑实施的过程控制，可以保证基坑本身及周边环境的安全。可为软土地区同类基坑工程的设计和施工提供参考。
Abstract:The mucky silty clay of layer ③ and the mucky clay of layer ④ in Shanghai have the characteristics of high water content,fluid plastic state,high compressibility and low strength,classified to the typical soft soil area. Combined with engineering examples,the design points of the deep foundation pit engineering adjacent to the existing building basement in the soft soil area are introduced,and comparative analysis is carried out through theoretical calculation,numerical simulation and monitoring of the implementation process. The results show that for the deep foundation pits in the soft soil area,through the reasonable selection of the type of the retaining structure and the support system,the groundwater treatment and construction conditions are properly formulated,and the process control of foundation pit implementation is strengthened,which could ensure the safety of the foundation pit itself and the surrounding environment.This research can provide reference for the design and construction of similar foundation pit engineering in soft soil area.
中文标题：
软土地区紧邻既有建筑物地库深大基坑支护设计与分析
Design and Analysis of Deep Foundation Supporting Near Existing Building Basement in Soft Soil Area
作者：
尤波
You Bo
作者简介:尤波,男,1986年生,河南商丘人,硕士研究生,工程师,主要从事岩土工程设计方向研究。E-mail:724773534@qq.com
通讯地址：
上海地矿工程勘察有限公司, 上海 200072
ShanghaiGeological&MineralEngineeringInvestigationCo.,Ltd.,Shanghai200072,China
中图分类号:TU473
doi:10.3969/j.issn.1007-2993.2020.02.001
出版物：岩土工程技术
收稿日期:2019-06-26
网络出版日期:2021-07-10
关键词:淤泥质黏土,软土地区,基坑支护,数值模拟
Key words:mucky clay,soft soil area,foundation pit support,numerical simulation
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