Residual Earth Pressure on a Retaining Wall with Sand Backfill Subjected to Forced Cyclic Lateral Displacements

Author(s):  
Daiki Hirakawa ◽  
Minehiro Nojiri ◽  
Hiroyuki Aizawa ◽  
Fumio Tatsuoka ◽  
Takashi Sumiyoshi ◽  
...  
2013 ◽  
Vol 353-356 ◽  
pp. 2073-2078
Author(s):  
Tian Zhong Ma ◽  
Yan Peng Zhu ◽  
Chun Jing Lai ◽  
De Ju Meng

Slope anchorage structure of soil nail is a kind of economic and effective flexible slope supporting structure. This structure at present is widely used in China. The supporting structure belong to permanent slope anchorage structure, so the design must consider earthquake action. Its methods of dynamical analysis and seismic design can not be found for the time being. The seismic design theory and method of traditional rigidity retaining wall have not competent for this new type of flexible supporting structure analysis and design. Because the acceleration along the slope height has amplification effect under horizontal earthquake action, errors should be induced in calculating earthquake earth pressure using the constant acceleration along the slope height. Considering the linear change of the acceleration along the slope height and unstable soil with the fortification intensity the influence of the peak acceleration, the earthquake earth pressure calculation formula is deduced. The soil nailing slope anchorage structure seismic dynamic calculation model is established and the analytical solutions are obtained. The seismic design and calculation method are given. Finally this method is applied to a case record for illustration of its capability. The results show that soil nailing slope anchorage structure has good aseismic performance, the calculation method of soil nailing slope anchorage structure seismic design is simple, practical, effective. The calculation model provides theory basis for the soil nailing slope anchorage structure of seismic design. Key words: soil nailing; slope; earthquake action; seismic design;


2012 ◽  
Vol 19 (11) ◽  
pp. 3298-3304 ◽  
Author(s):  
Shao-jun Ma ◽  
Kui-hua Wang ◽  
Wen-bing Wu

2017 ◽  
Vol 48 (3) ◽  
pp. 541-548 ◽  
Author(s):  
Qiao-Yong Zhou ◽  
Yi-Tao Zhou ◽  
Xue-Min Wang ◽  
Peng-Zhi Yang

DYNA ◽  
2017 ◽  
Vol 84 (202) ◽  
pp. 9-15
Author(s):  
André Luís Brasil Cavalcante ◽  
Juan Félix Rodríguez Rebolledo

En este artículo se describe una metodología basada en el método de estimación puntual de Rosenblueth para el análisis del empuje activo desarrollado en un muro de retención con relleno cohesivo-friccionante bajo condiciones de carga sísmica. El principio básico de esta metodología es usar dos estimaciones puntales, i.e., la desviación estándar y el valor medio, para examinar una variable en el análisis de seguridad. Es posible mostrar que aumentando el valor del coeficiente de aceleración sísmica horizontal, el factor de seguridad por volteo decrece y la probabilidad de falla aumenta, especialmente para coeficientes mayores que 0.2. Por otro lado, es observado que el valor medio del factor de seguridad crece cuando aumenta el coeficiente de aceleración sísmica vertical, sin embargo la probabilidad de falla se mantiene prácticamente igual para el valor del factor de seguridad considerado como crítico (1.15).


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