Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Connection Stability Analysis of Segmental Geosynthetic Reinforced Soil (GRS) Walls
Abstract There have been ongoing arguments whether heavy blocks and/or facing connection enhancement elements, such as pins, lips, or keys, are needed for facing stability of segmental reinforced soil walls with geosynthetic reinforcement. This study was undertaken to examine facing connection forces for vertical or near vertical segmental reinforced soil walls with purely friction connections. In the study, the lateral earth pressure was assumed to be the Rankine active earth pressure—an assumption that has been employed by most current design methods of reinforced soil walls with extensible reinforcement. Based on force equilibrium, the driving forces and resisting forces at facing connections are derived for situations where reinforcement is at every course of facing blocks and at every three courses of facing blocks. For the latter, both the connection forces at geosynthetic–block interface and at block–block interface are considered. Based on these connection force equations, generalized equations of driving and resisting forces for any number courses of blocks between adjacent reinforcement layers are developed. Using the generalized connection force equations, comparisons of driving and resisting forces for some common parameter values and under typical conditions of reinforced soil walls were performed. The significance of reinforcement spacing, as well as the need, or lack thereof, for heavy facing blocks and/or additional connection measures on facing stability is discussed. The benefit of small reinforcement spacing is demonstrated. A common perception that a higher wall is more susceptible to connection failure is true only for segmental walls with larger reinforcement spacing.
Connection Stability Analysis of Segmental Geosynthetic Reinforced Soil (GRS) Walls
Abstract There have been ongoing arguments whether heavy blocks and/or facing connection enhancement elements, such as pins, lips, or keys, are needed for facing stability of segmental reinforced soil walls with geosynthetic reinforcement. This study was undertaken to examine facing connection forces for vertical or near vertical segmental reinforced soil walls with purely friction connections. In the study, the lateral earth pressure was assumed to be the Rankine active earth pressure—an assumption that has been employed by most current design methods of reinforced soil walls with extensible reinforcement. Based on force equilibrium, the driving forces and resisting forces at facing connections are derived for situations where reinforcement is at every course of facing blocks and at every three courses of facing blocks. For the latter, both the connection forces at geosynthetic–block interface and at block–block interface are considered. Based on these connection force equations, generalized equations of driving and resisting forces for any number courses of blocks between adjacent reinforcement layers are developed. Using the generalized connection force equations, comparisons of driving and resisting forces for some common parameter values and under typical conditions of reinforced soil walls were performed. The significance of reinforcement spacing, as well as the need, or lack thereof, for heavy facing blocks and/or additional connection measures on facing stability is discussed. The benefit of small reinforcement spacing is demonstrated. A common perception that a higher wall is more susceptible to connection failure is true only for segmental walls with larger reinforcement spacing.
Connection Stability Analysis of Segmental Geosynthetic Reinforced Soil (GRS) Walls
Wu, Jonathan T. H. (Autor:in) / Payeur, Jean-Baptiste (Autor:in)
Transportation Infrastructure Geotechnology ; 2 ; 1-17
22.08.2014
17 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Connection Stability Analysis of Segmental Geosynthetic Reinforced Soil (GRS) Walls
| Online Contents | 2015
Geosynthetic reinforced segmental retaining walls
| Tema Archiv | 2001
Geosynthetic reinforced segmental retaining walls
| Online Contents | 2001
Geosynthetic Reinforced Segmental Retaining Walls
| British Library Conference Proceedings | 2000
Kersten Lecture: Geosynthetic Reinforced Segmental Walls
| British Library Conference Proceedings | 2000