Dynamic Behavior of Ground Improved Using a Crushed Stone Foundation Wall
| Autor: | Pouyan Bagheri, Jin Man Kim, Su Won Son |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Peak ground acceleration
ground acceleration ground improvement Geography Planning and Development 0211 other engineering and technologies TJ807-830 02 engineering and technology Management Monitoring Policy and Law engineering.material TD194-195 Seismic wave acceleration amplification ratio Renewable energy sources Acceleration medicine Crushed stone Geotechnical engineering GE1-350 Response spectrum 021101 geological & geomatics engineering response spectrum Environmental effects of industries and plants Renewable Energy Sustainability and the Environment foundation wall Foundation (engineering) Stiffness Building and Construction 021001 nanoscience & nanotechnology Environmental sciences crushed stone engineering Earthquake shaking table medicine.symptom 0210 nano-technology Geology 1 g shaking table test |
| Zdroj: | Sustainability, Vol 11, Iss 10, p 2767 (2019) Sustainability Volume 11 Issue 10 |
| ISSN: | 2071-1050 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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