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《Railway Engineering》 2018-09
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Study on Arch Cover-Anchor Cable-Grouting Combined Support System of Subway Station with Weak Intercalation

YUAN Guodong;WANG Weiming;Shandong Provincial Key Laboratory of Civil Engineering Disaster Prevention,Shandong University of Science and Technology;  
Zaoshan Road station construction of Qingdao Metro Line 2 with large arch foot arch cover method showed that geological conditions is inconsistent with the original geological exploration results,the original support system cannot meet the requirements of ground subsidence,vault subsidence and main structure stress,and the arch cover-anchor cable-grouting combined support system of subway station with weak intercalation was proposed.Numerical analysis and stability increment method was used to study the influence of grouting reinforcement layer thickness,anchor cable location and number, initial prestress of anchor cable on support effect,t he optimum support parameters of this combined support system were determined, in which the thickness of the grouting reinforcement layer is 3 m,and an anchor cable with prestress of 200 kN should be placed in the anchor foot and the middle of the lower section respectively.
【Fund】: 国家自然科学基金(41472280)
【CateGory Index】: U231.3
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