摘要
瑞雷波相速度V_R可以反映一定深度范围内岩土体的物理力学性质.与常规检测方法相比,瑞雷波检测具有分辨率高、受场地影响小、检测设备简单、检测速度快等优点,能够胜任大面积地基处理效果的检测.本文主要介绍瑞雷波检测在南口镇污水处理厂场地地基强夯处理效果检测中的应用.比较对应测点处持力层深度范围内的瑞雷波速与原位载荷试验数据,得出了准基床系数K与瑞雷波波速V_R的统计关系,据此将强夯地基持力层深度上的V_R分布转换为K值的分布,进而得出了场区地基处理土体在设计荷载作用下的沉降量分布.根据上述测试结果对场区地基强夯处理效果进行了评价.
Rayleigh wave phase velocity VRcan reveal the physical and mechanical properties of rock or soil mass at a certain depth. Compared to traditional test methods, the Rayleigh wave test has many advantages such as fine resolution, simple apparatus and high testing speed. This paper mainly illustrates the application of the Rayleigh wave test to the evaluation of dynamic consolidation effect of Nankou sewage treatment plant foundation. The statistic relationship between Rayleigh wave velocity VR and pseudo subgrade reaction coefficient K is drawn from the data of Rayleigh wave test and loading test in situ. According to this relationship, the distribution of VR of the bearing layer in the site is transformed into the distribution of K, and the settlement distribution of the foundation under the action of design load is obtained. On the basis of the test result, the dynamic consolidation effect of the Nankou sewage treatment plant foundation is properly evaluated.
出处
《地球物理学进展》
CSCD
北大核心
2009年第4期1533-1539,共7页
Progress in Geophysics
关键词
南口镇污水处理厂
强夯处理地基
瑞雷波相速度
准基床系数
Nankou sewage treatment plant, dynamic consolidation of foundations, Rayleigh wave phase velocity, pseudo subgrade reaction coefficient
