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A platform for research: civil engineering, architecture and urbanism
Shaking Table Tests to Investigate Soil Desaturation as a Liquefaction Countermeasure
This paper discusses the possibility and effectiveness of soil desaturation as a liquefaction countermeasure technique. Soil type and soil characteristics that can be effectively desaturated during air injection, and longevity of air bubbles in the soil are described first. Inspection of samples taken by ground freezing method from SCP improved ground revealed that degree of saturation (Sr) shortly after SCP was lower than 91 % in the sand layers and a good correlation was found between Sr and 5% diameter of the soil. Degree of saturation of soils after several years ago was noticeably, but not significantly, higher as compared with that shortly after ground improvement, indicating longevity of air bubbles injected in the improved soil. Next, a series of shaking table tests of desaturated ground with and without rigid foundation resting on it is discussed. In the tests, vacuum pressure was introduced to the models to avoid distorted scaling factor.
Shaking Table Tests to Investigate Soil Desaturation as a Liquefaction Countermeasure
This paper discusses the possibility and effectiveness of soil desaturation as a liquefaction countermeasure technique. Soil type and soil characteristics that can be effectively desaturated during air injection, and longevity of air bubbles in the soil are described first. Inspection of samples taken by ground freezing method from SCP improved ground revealed that degree of saturation (Sr) shortly after SCP was lower than 91 % in the sand layers and a good correlation was found between Sr and 5% diameter of the soil. Degree of saturation of soils after several years ago was noticeably, but not significantly, higher as compared with that shortly after ground improvement, indicating longevity of air bubbles injected in the improved soil. Next, a series of shaking table tests of desaturated ground with and without rigid foundation resting on it is discussed. In the tests, vacuum pressure was introduced to the models to avoid distorted scaling factor.
Shaking Table Tests to Investigate Soil Desaturation as a Liquefaction Countermeasure
Okamura, Mitsu (author) / Teraoka, Taiji (author)
Workshop on Seismic Performance and Simulation of Pile Foundations in Liquefied and Laterally Spreading Ground ; 2005 ; University of California, Davis, California, United States
2005-10-31
Conference paper
Electronic Resource
English
Shaking Table Tests to Investigate Soil Desaturation as a Liquefaction Countermeasure
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