Analytic solution of dynamic characteristics and responses of soil-box model for shaking table tests
YUAN Lin-juan1, 2, 3, LIU Xiao-sheng2, 3, WANG Xiao-gang2, 3, YANG Zheng-quan2, 3, YANG Yu-sheng2, 3
1. College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China; 2. State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, Beijing 100044, China; 3. Department of Geotechnical Engineering, China Institute of Water Resources and Hydropower Research, Beijing 100044, China
Abstract：The design of the model box for shaking table tests has a remarkable impact on their accuracy and reliability. The main defects of laminar shear model box are as follows: added mass, friction between the layers as well as maximum displacement limitation. Based on the shear beam method, a simplified soil-box model considering the interaction of soil columns and laminar shear model box is established. On the condition of the shear modulus evenly and exponentially distributed, the analytic solutions of the dynamic characteristics and responses are deduced respectively. Furthermore, the influencing factors, such as size and material, are discussed. The results show that the added mass makes the natural frequency of the soil-box model less than the soil column model, and the error of the frequency decreases with the increase of the box size. Besides, the test error from aluminum alloy box is obviously less than that of the steel box for the same size. On the basis of these, the requirements of the box size and material are given. The proposed method provides some reference for the design of suitable model box.
袁林娟, , , 刘小生, 汪小刚, 杨正权, 杨玉生. 振动台土–箱结构模型动力特性及反应的解析分析[J]. 岩土工程学报, 2012, 34(6): 1038-1042.
YUAN Lin-juan, , , LIU Xiao-sheng, WANG Xiao-gang, YANG Zheng-quan, YANG Yu-sheng. Analytic solution of dynamic characteristics and responses of soil-box model for shaking table tests. Chinese J. Geot. Eng., 2012, 34(6): 1038-1042.