土工基础

土工基础 ›› 2025, Vol. 39 ›› Issue (2): 159-165.

• 工程实录 •    下一篇

软土地区多种支护形式的长大基坑变形特性

章伟1，许胜君2，张振宇2，张佰良3，吴熙4,5，孙苗苗4,5   

  1. （1.杭州交通投资建设管理集团有限公司，杭州 310000；2.杭州市交通投资集团有限公司，杭州 310000；3.杭州市西站枢纽开发有限公司，杭州 311121；4.浙大城市学院 土木工程系，杭州 310015；5.城市基础设施智能化浙江省工程研究中心，杭州 310015）
  • 收稿日期:2023-04-25 修回日期:2023-05-17 出版日期:2025-04-30 发布日期:2025-06-03
  • 作者简介:章伟（1981-），男，高级工程师,研究方向为隧道施工技术。
  • 基金资助:
    基金项目：浙江省交通运输厅科技项目（2022-GCKY-11），浙江省自然科学基金项目（LTGG23E080002）

Deformation Characteristics of Large Sized Foundation Excavations with Various Types of Support in Soft Soil Areas#br#

ZHANG Wei1, XU Shengjun2, ZHANG Zhenyu2, ZHANG Bailiang3, WU Xi4,5， SUN Miaomiao4,5   

  1. (1.Hangzhou Transportation Investment and Construction Management Group Co. Ltd., Hangzhou 310000；
    2.Hangzhou Communications Investment Group Co. Ltd., Hangzhou 310000；
    3.Hangzhou West Station Hub Development Co. Ltd., Hangzhou 311121；
    4.Department of Civil Engineering, Hangzhou City University, Hangzhou 310015；
    5.Zhejiang Engineering Research Center of Intelligent Urban Infrastructure, Hangzhou 310015)
  • Received:2023-04-25 Revised:2023-05-17 Online:2025-04-30 Published:2025-06-03

摘要： 为了分析软土地区多种支护形式的长大基坑变形特性，以杭州市某软土地区长大基坑工程为背景，采集了基坑外土体沉降、基坑围护结构变形、支撑轴力等关键数据，分析并综合评价多种支护形式下长大基坑围护结构的变形控制效果。结果表明：软土地区长大基坑工程中，SMW工法桩与钻孔灌注桩两种支护形式均能有效限制基坑变形，多种基坑支护形式组合应用下围护结构的变形控制效果呈现出较强的整体性，连接处两侧的围护结构变形具有连续性。采用多种基坑支护形式组合应用的方式能够满足设计和施工要求，基坑结构变形均能控制在规范要求的范围内。工程实践可为类似基坑工程提供参考。


关键词: 基坑开挖, 软土地区, 实测分析, 支护形式, 组合应用

Abstract: The deformation characteristics of the long and large sized foundation excavation with various types of excavation supports in soft soil areas are analyzed in this paper. The construction monitoring data of the soil settlement, the retaining structure deformation, and the axial force of the bracing system are collected for a project in Hangzhou. The long and large sized foundation excavation retaining structure under different support types was comprehensively analyzed and evaluated. The results show that both bored piles and the SMW method columns can effectively control the deformation of the excavation. The deformation control capability of the enclosure structure under the combined application of different foundation support types presents a strong uniformity and the deformation of the enclosure structure on both sides of the junctions is continuous. The combined application of different foundation excavation support types can meet the design and construction requirements, and the structural deformation of the foundation excavation can be controlled within the scope of the code requirements. The engineering practice can provide a construction experience and the practical basis for similar projects in the future.

Key words: Foundation Excavations, Soft Soil Area, Monitoring and Analysis, Types of Supports, Combined Applications

中图分类号: