The Probability Distribution Rule Of Highway Tunnel Concrete Construction Thickness And Reliability Analysis

Tunnel engineering more and more used in railway and highway construction,but there are a lot of taken over structure in it,how about quality,and how about lifespan,that all affect its application. Railway tunnel and highway tunnel extensively adopt pattern is load- structure pattern,from it we know that the concrete thickness is a important effect to structure security. Thus the mathematic statistics rule of concrete structure thickness is importance part of application reliability theory design.This thesis pass through The Laser Delimitation Instrument and The Geological Radar Instrument means,to tunnel initial stages support and secondary structure. At past the research of tunnel lining thickness depend on opening dig figure,don' t consider the effect of tunnel lining inner figure. Adopting the integrate method of The Laser Delimitation Instrument and The geological Radar could most exact reflect the change rule of tunnel lining thickness,but also could do lots unbroken examination,have very important for summing-up the rule of tunnel lining thickness change,and have very amplitude extend value.Bases research of by bore-exploding way built tunnel,discover the tunnel lining thickness and tunnel lining inner figure accord with normal school. At premise of tunnel lining structure construction must be ensure reliability mark and design specification,debase standard difference and variance parameter,reduce construction cost. At the part vault and arch foot in the tunnel secondary lining thickness,the standard difference and variance parameter is large than others,so insure the part thickness achieve design require by adjust construction craftwork.The assess to tunnel lining concrete thickness lack many statistic data,all the same adopt un-statistic means to assess,advise adopt the probability statistic expression after gain lots of practice data. Pass through mechanical model calculate,discover the vault and arch foot part in the tunnel secondary lining thickness is weakness part,so at the design and construction must strengthen these part. The Laser Delimitation Instrument and The Geological Radar Instrument means not only adapt to tunnel lining structure,but also to tunnel initial stages support,and adapt to the course inspect of tunnel construction. The means could extend in tunnel construction. After pass through analyze a lot of fact checking data,tunnel lining concrete thickness require could express by probability statistic.