Centrifuge modeling on seismic behavior of reinforced earth embedment

• Main Authors: Yi-zeng Ciou, 邱益增
• Other Authors: Jin-Hung Hwang
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/05304198938150169471

碩士 === 國立中央大學 === 土木工程研究所 === 100 === A series of centrifuge model tests was conducted to simulate the dynamic response of reinforced earth embedment. The variables considered in the centrifuge testing program were the reinforcement tensile strength, reinforcement spacing, reinforcement length, embedment height, and slope inclination. The main objectives were to investigate reinforced earth embedment in different reinforced type, and geometry. According to model test results, the following conclusions are made： (1) For a 4m-high embedment, the predominant frequency is about 10Hz, for an 8m-high embedment, the predominant frequency is about 5.7Hz, and for a 12m-high embedment, the predominant frequency is about 4.5Hz, which means predominant frequency had a significant association with the height of embedment. (2)There are some acceleration attenuation phenomenon occurs at 1Hz event and related to the significant movement of the embedment. (3)For all 8m-high embedment, model conducted with the reinforcement tensile strength 112kN/m and 62.5kN/m performed very well under seismic loading. (4) According to the rupture point of reinforcement we can draw a failure surface, the failure surface it similar to a circular failure surface.