Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Simplified Soil-Pile Interaction Modeling under Impact Loading
Guardrails, consisting of soil-embedded piles tied with a rail, are safety barriers that are installed along highways to shield errant motorists from roadside hazards and to minimize the risk of serious injuries. Soil resistance plays a crucial role in the way that guardrails perform when impacted by vehicles. Although the consequences of guardrail system failures are tragic, little is known on the dynamic impact characteristics of soil and soil-pile interaction under impact loading. Thus, research was conducted to investigate the load-deflection behavior of a single pile under impact through dynamic large-scale component testing and numerical simulation using LS-DYNA. Baseline dynamic tests were performed on a steel W6x16 pile embedded in crushed limestone soil impacted by a surrogate bogie vehicle. Test results were used to develop a simplified numerical model of soil-pile system when impacted by a vehicle. The validated model was then compared to full-scale crash test data. The proposed soil modeling method accurately represented soil and pile behavior in component tests and full-scale vehicle crash tests.
Simplified Soil-Pile Interaction Modeling under Impact Loading
Guardrails, consisting of soil-embedded piles tied with a rail, are safety barriers that are installed along highways to shield errant motorists from roadside hazards and to minimize the risk of serious injuries. Soil resistance plays a crucial role in the way that guardrails perform when impacted by vehicles. Although the consequences of guardrail system failures are tragic, little is known on the dynamic impact characteristics of soil and soil-pile interaction under impact loading. Thus, research was conducted to investigate the load-deflection behavior of a single pile under impact through dynamic large-scale component testing and numerical simulation using LS-DYNA. Baseline dynamic tests were performed on a steel W6x16 pile embedded in crushed limestone soil impacted by a surrogate bogie vehicle. Test results were used to develop a simplified numerical model of soil-pile system when impacted by a vehicle. The validated model was then compared to full-scale crash test data. The proposed soil modeling method accurately represented soil and pile behavior in component tests and full-scale vehicle crash tests.
Simplified Soil-Pile Interaction Modeling under Impact Loading
Pajouh, Mojdeh Asadollahi (Autor:in) / Schmidt, Jennifer (Autor:in) / Bielenberg, Robert W. (Autor:in) / Reid, John D. (Autor:in) / Faller, Ronald K. (Autor:in)
Geotechnical Earthquake Engineering and Soil Dynamics V ; 2018 ; Austin, Texas
07.06.2018
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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