（1 南京市测绘勘察研究院股份有限公司， 南京 210019；2 南京工业大学交通与运输工程学院， 南京 210009）

［摘要］HCMW工法是一种新型的基坑支护形式，其结合混凝土圆环内支撑可有效地保护基坑周边环境。以采用HCMW 工法进行基坑支护的泰兴国际大酒店二期工程的设计和实施为背景，对该支护形式应用于基坑工程中的特点进行了初步分析；对预制工字形桩与混凝土冠梁、围檩的连接，以及混凝土圆环内支撑的设计等作了详细的介绍，最后根据计算结果与现场实测情况分析了实施的效果。

［关键词］HCMW工法； 圆环内支撑； 基坑； 预制工字形桩

中图分类号：TU473文献标识码：A文章编号：1002-848X(2019)03-0120-05

Excavation support design of HCMW method combined with ring inner bracing

Zhao Shengfeng1,2, Chen Zhiyang1, Cai Yun1, Zhao Qianyun2, Zhang Xin1

(1 Nanjing Institute of Surveying, Mapping & Geotechnical Investigation Co., Ltd., Nanjing 210019, China;2 College of Transportation Science & Engineering, Nanjing Tech University, Nanjing 210009, China)

Abstract:High strength concrete mixed wall(HCMW) method is a new type of supporting form of excavation.The combination of  concrete ring inner bracing and HCMW method can effectively protect the environment around excavation. Based on the design and construction of excavation supporting structure in Taixing International Hotel second-phase project with HCMW method, the characteristic of the application of HCMW method in excavation was preliminary analyzed; the connection of prefabricated I-shaped pile and concrete top beam or purlin, and the design of concrete ring inner bracing were introduced in detail. And finally, according to the results of calculation and field measurement, the effect of implementation was analyzed.

Keywords:HCMW method; ring inner bracing; excavation; prefabricated I-shaped pile

*南京市测绘勘察研究院有限公司立项课题（2016RD05）。

作者简介：赵升峰，硕士，工程师，注册土木工程师（岩土），Email: 442877591@qq.com。