Working Behavior&Reliability Of Pre-stressed Composite Soil Nailing

Soil nailing and pre-stressed composite soil nailing is widely used in deep foundation.The perspective of this article from the security reliability of pre-stressed composite soil-nailing reliability assessment through on-site monitoring of pre-stressed composite soil nailing work performance and mechanical behavior of, and theThe main works are as the followings:(1) The results shows that:the probability of failure of pre-stressed composite soil nailing is less than prime soil nailing.(2)An actual foundation construction process monitoring has been done to the foundation pit which uses pre-stressed soilnailing to support it. And some results has been found.(3) Anchor structure shows that the tensioning anchor cable best position, at this location, soil nailing maximum axial force can be reduced horizontal displacement and vertical displacement is also smaller.(4)The stress of soil-nailing and pre-stressed and the subside of pit can be seen from the results of simulation.(5) FLAC simulation results show that the tension stress of prestressed anchor cable is deferent at diverse depth.