YSPR预应力混凝土矩形实心支护桩在深基坑支护中的应用  

Application of YSPR Rectangular Prestressed High-strength Concrete Supporting Pile in Deep Foundation Pit Support

作　　者：陈文杰 尤弋 CHEN Wenjie;YOU Yi(Geotechnical Engineering Company of Jiangsu Province,Nanjing Jiangsu 210018,China)

机构地区：[1]江苏省岩土工程公司,江苏南京210018

出　　处：《江苏建筑》2024年第6期143-145,共3页Jiangsu Construction

摘　　要：文章针对高地下水位砂土层深基坑支护特点,采用一种新的支护形式,即在三轴水泥搅拌桩中插入YSPR预应力混凝土实心矩形支护桩(PCMW工法)。PCMW工法兼具挡土和止水功能,且具有施工速度快、造价低、变形小等优点。结合南京某深基坑工程实例,根据现场监测的深层土体位移和周边道路沉降等数据,证实PCMW工法在高地下水位砂土层深基坑支护工程中应用可行。According to the characteristics of deep foundation pit support in a high groundwater level sand layer,a new support form is adopted,that is,YSPR prestressed concrete solid rectangular support pile is inserted into the triaxial cement mixing pile(PCMW method).The PCMW method has the functions of retaining soil and stopping water,and has the advantages of fast construction speed,low cost,and small deformation.Combined with a deep foundation pit project in Nanjing,the feasibility of applying the PCMW method in deep foundation pit support engineering of sand layer with high groundwater level is confirmed by the data of in-situ monitoring of deep soil displacement and surrounding road settlement.

关 键 词：PCMW工法 YSPR预应力混凝土实心矩形支护桩 砂土 深基坑支护 

分 类 号：TU473[建筑科学—结构工程]