黄土湿陷性试验研究

为防止在湿陷性黄土地区实施建设项目时发生失稳事故,保证工程设计和施工的安全可靠性、经济合理性,根据湿陷性黄土的特点和工程要求,对西安Q3黄土进行了双线法压缩试验及湿陷性评价,得到了土样的湿陷系数以及湿陷起始压应力等相关参数。通过比较、分析不同深度黄土的湿陷系数、湿陷起始压应力、湿陷峰值压应力,以及有关不同深度值的讨论,分析了西安Q3黄土的湿陷特性,从而为当地湿陷性黄土地基处理提供了重要依据。

Study of Collapsibility Test on Loess

In the construction projects in the areas of collapsible loess,in order to prevent the unstable foundation accidents,and ensure the safety and thrifty of the project design and implementation,the loess collapsibility evaluation is necessary based on the features of the loess and the requirements of the project.Some correlated coefficients,such as the collapsible coefficients and the initial collapse pressure of the soil samples were obtained through the double-method specimen compression test on Q_3 loess of Xi'an and its collapsible characteristic was analyzed through the comparison of the collapsible coefficients,the initial collapse pressures as well as the peak value pressures of the loess in various depths,and the discussions of different depths,which provided significant basis for the soil treatment of the local collapsible loess.