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《Chinese Journal of Underground Space and Engineering》 2017-03
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Mechanism Analysis on Strength and Deformation of Row Piles and Soil Nail Composite Supporting Structure

Guo Yuancheng;Li Yonghui;Zhou Liang;School of Civil Engineering,Zhengzhou University;Chongqing Construction Science Research Institute;  
Row piles and soil nailing composite supporting structure is a new type of pit supporting form in application in recent years.In order to study the stress and deformation mechanisms of the composite supporting structure,one project case was analyzed.Then,non-linear 3D models were built using finite element analysis software to stimulate the horizontal displacement of the pile,earth surface setting and horizontal displacement behind pit,pit bottom upheaval,pile axial force and pile moment concerning the contact between soil and pile as well as the contact between nail and soil.From the results,soil nails act as the "weak anchors" in the row piles and soil nail composite supporting structure,which has changed the initial mechanics and deformation status of row piles;compared with soil nail supporting structure,the maximum value of soil nail axial force is smaller and its place is near pit lateral wall,soil nail is in tension and nail tip force is very big.Relevant results got from this study can well serve the optical design and field construction of row piles and soil nail composite supporting structure theoretically.
【Key Words】: row piles and soil nailing composite supporting structure pit supporting numerical stimulation stress and deformation mechanism
【CateGory Index】: TU476
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Chinese Journal Full-text Database 8 Hits
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【Co-citations】
Chinese Journal Full-text Database 9 Hits
1 Guo Yuancheng;Li Yonghui;Zhou Liang;School of Civil Engineering,Zhengzhou University;Chongqing Construction Science Research Institute;;Mechanism Analysis on Strength and Deformation of Row Piles and Soil Nail Composite Supporting Structure[J];地下空间与工程学报;2017-03
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