DDC处理湿陷性黄土路基的技术研究

Technology Research on Collapsible Loess Roadbed by DDC Treatment

DDC技术是近年来在建筑行业广泛采用的一种地基处理形式。以大西铁路客运专线南姚村特大桥台尾至南王村特大桥桥头区段路基为工程背景,对DDC技术的加固机理、施工方法进行了总结研究,对成桩质量进行了试验检测。通过现场试验,确定了各项施工参数及施工劳动力和机械设备的合理配置,为今后类似工程施工提供参考。

DDC technology is a form of foundation treatment which widely used in the construction industry in recent years. Taking the sectional roadbed of Nanyaocun bridge abutment end to Nanwangcun bridgehead of Datong-Xi＇ an High-speed Railway as the engineering background, this paper summarized and researched the reinforcement mechanism of DDC technology and construction method, and made a research on the pile quality test. Through the field test, reasonable allocation among various construction parameters, construction labor and machinery equipment was determined, which could provide a reference for future similar projects.