咬合砂浆桩内插型钢止水支护技术在复杂地质基坑工程中的应用  

Application of Interlocking Mortar Pile with Embedded Steel Waterstop Support Technology in Complex Geological Foundation Pit Engineering

作　　者：沈守鸿 SHEN Shouhong(Fujian Provincial Institute of Architectural Design and Research Co.,Ltd,Fuzhou 350001)

机构地区：[1]福建省建筑设计研究院有限公司,福建福州350001

出　　处：《福建建筑》2025年第2期63-67,共5页Fujian Architecture & Construction

摘　　要：研究针对复杂地质条件下的深基坑工程中止水与支护问题,提出并实际应用了咬合砂浆桩内插型钢止水支护技术。技术结合SMW工法和混凝土咬合桩的优势,在砂浆桩中插入型钢,提升了支护结构的经济性和地层适应性。在福州市晋安区某深基坑工程实践中,该技术克服了工法桩的适用性问题,尤其是在卵石及中-微风化花岗岩地层中的应用,与传统的混凝土咬合桩相比,成功降低了工程成本约23.7%。监测数据表明,通过有效的降水和回灌措施,地下水位变化及其对周边建筑和地表的影响均得到有效控制,确保了工程和周边建筑的安全。此技术的成功应用,可为类似的基坑工程提供参考及借鉴。This study addresses the issues of water stopping and support in deep foundation pit engineering under complex geological conditions,and proposes the practical application of an interlocking mortar pile technique with inserted steel for water stopping and support.This technique combines the advantages of the SMW(Soil Mixing Wall)method and interlocking concrete piles,and involves inserting steel sections into mortar piles to enhance the economy and adaptability of the support structure to various soil conditions.In a deep foundation pit project in the Jin an district of Fuzhou city,this technique overcame the applicability issues associated with method piles,particularly in cobblestone and medium to slightly weathered granite strata.Compared to traditional interlocking concrete piles,it successfully reduced the project costs by approximately 23.7%.Monitoring data indicates that through effective dewatering and recharging measures,changes in the groundwater level and its impact on adjacent buildings and the ground surface were effectively controlled,ensuring the safety of the project and the surrounding structures.The successful application of this technique can provide a reference for similar foundation pit projects.

关 键 词：咬合砂浆桩 SMW工法 混凝土咬合桩 地下水位控制 

分 类 号：TU4[建筑科学—土工工程]