杨会桥

【摘 要】深层搅拌法是目前加固软土地基的一种常用方法，水泥稳定土深层搅拌桩是其中最为常见的一种。水泥土搅拌桩是一种化学加固地基法，在建筑行业中有广泛应用。本文首先针对深层搅拌法用于软基处理的作用机理进行了分析，进而对水泥土深层搅拌桩加固地基的国内代表性研究成果进行了综述，分析了水泥土深层搅拌桩加固地基的强度形成机理，提出了影响水泥土深层搅拌桩的强度影响因素和强度提高措施，最后介绍了目前常用的水泥土深层搅拌桩质量的检测方法。论文对于特殊路基处治技术研究和工程实践具有一定的参考价值。

【关键词】地基加固;软基处理;水泥土桩;深层搅拌法;质量检测

Application of deep mixing pile of cement soil in soft foundation treatment

Yang Hui-qiao

（Guizhou Provincial Highway Survey and Design Institute Co.， Ltd Guiyang Guizhou 550008）

【Abstract】The deep mixing method is currently a common method for reinforcing soft soil foundation， and the cement stabilized soil deep mixing pile is the most common one. Cement-soil mixing pile is a chemically reinforced foundation method and is widely used in the construction industry. In this paper， the mechanism of deep mixing method for soft foundation treatment is analyzed firstly， and the domestic representative research results of cement-soil deep mixing pile reinforcement foundation are reviewed. The strength formation mechanism of cement-soil deep mixing pile reinforcement foundation is analyzed. The influencing factors and strength improvement measures for the strength of deep mixing piles in cement soil are proposed. Finally， the methods for detecting the quality of deep mixing piles in cement soil are introduced. The thesis has certain reference value for special roadbed treatment technology research and engineering practice.

【Key words】Foundation reinforcement;Soft foundation treatment;Cement soil pile;Deep mixing method;Quality inspection

1. 引言

（1）水泥土攪拌法在建筑行业中应用广泛，它是一种化学加固地基法，其作用机理是以水泥或水泥系材料为固化剂，通过特制的深层搅拌机械，在地基深处将原位土与固化剂强制搅拌，形成水泥土加固柱体，该柱体与地基土相比具有强度高、模量大、渗流系数小等优点，故在实际工程中有着广泛应用。深层搅拌桩作为一种地基处治方法，可有效控制和减少工后沉降量，并能适应快速加荷要求，从而缩短建设周期，非常适合高速公路建设。该法具有其它软基处治方法不可替代的优越性，必将在高速公路软基处治中得到更为广泛的应用。

（2）由于水泥土桩的各项指标介于钢筋混凝土桩和土体间，是……