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RSS FeedsSustainability, Vol. 11, Pages 2767: Dynamic Behavior of Ground Improved Using a Crushed Stone Foundation Wall (Sustainability)

 
 

15 may 2019 06:01:53

 
Sustainability, Vol. 11, Pages 2767: Dynamic Behavior of Ground Improved Using a Crushed Stone Foundation Wall (Sustainability)
 




The improvement of soft clay and dredged soils to carry structures is increasingly important. In this study, the dynamic behavior of a crushed stone foundation wall in clay soil was analyzed using a 1g shaking table test. The response accelerations and spectra for three input ground motions were analyzed relative to the distance from the foundation wall, confirming that the acceleration was damped from the outside. The acceleration according to the distance from the wall was not significant under long-period motions, while different responses were obtained under short-period motions. The increased ground stiffness provided by the crushed stone wall lowered the natural period of the ground, and the acceleration amplification under short-period seismic waves was larger than that under long-period waves. Finally, equations were derived to describe the relationship between the acceleration amplification ratio and distance from the wall. The slopes of the proposed equations are larger under shorter periods, implying that the change in acceleration change with distance from the wall is more significant under shorter periods. The results of this study can be used to inform the design of soft soil improvements and the structures built atop them.


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99 viewsCategory: Ecology
 
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