Application design of concrete canvas (CC) in soil reinforced structure

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• 作者：Hui Li^a ; Huisu Chen^a ; ^{chenhs@seu.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Lin Liu^b ; ^{liulin@hhu.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Fangyuan Zhang^a ; Fangyu Han^a ; Tao Lv^c ; ^{musult@126.com" class="auth_mail" title="E-mail the corresponding author} ; Wulong Zhang^c ; Yujie Yang^c
• 关键词：Geosynthetics ; Concrete canvas ; Retaining wall ; Slope protection ; Construction design
• 刊名：Geotextiles and Geomembranes
• 出版年：2016
• 出版时间：August 2016
• 年：2016
• 卷：44
• 期：4
• 页码：557-567
• 全文大小：2589 K

文摘

Concrete canvas (CC for short), which is a flexible cement powder impregnated fabric that hardens on hydration to form a thin, durable water proof and fire-resistant concrete layer, has been used in slope protection, and CC may also have widely potential application in retaining wall structure. This article presents the design methodology for the CC-faced reinforced soil retaining wall structure according to the mechanical properties of CC. The result demonstrates that carbon nanotube (CNT) modified ultra-high molecular weight polyethylene (UHMWPE) unidirectional fabric reinforced CC can be applied to the reinforced soil retaining wall with a height of between 3 m and 10 m, and reasonable spacing of reinforcements is 0.5 ∼ 1 m. In addition, the connection between the reinforcement and CC wall can be safely against bearing capacity failure. Finally, the results of a FEM parametric study indicate that the horizontal displacement of CC is a little large (about 20 mm @ 6 m height retaining wall). Relative large maximum displacement of the CC wall indicates that the high stiffness reinforcement should be used to reduce the overall horizontal displacement of the wall.