碾压堆石体强度参数的统计特征分析

Statistics on Strength Parameters for Roller-compacted Revetment

碾压堆石体在高回填的港口护岸、水利堤防、市政建设项目中得到广泛应用。碾压堆石体的抗剪强度指标是工程设计中最重要的参数,以堤身结构为碾压堆石体的涪陵城区移民迁建防护大堤为工程实例,通过在施工试验段进行的现场大型剪切试验,对碾压堆石体的Mohr-Coulomb抗剪强度准则参数内聚力C、内摩擦角的随机特征进行分析,研究参数C、的变异性和相关性,为合理选取既定料场前提条件下的施工方法及对应的抗剪强度指标提供科学依据。

Roller-compacted revetment with high backfilling thick ness has been widely used in water conservancy works, public works and bank protection for port engineering. The revetment's shear strengths are the most im portant parameters for the designer. Based on the Fuling Revetment Project, shea r tests for the trial segment of revetment were conducted in the site. By analyz ing the random characteristics of Mohr-Coulomb strength parameters C and , and the parameters' variation and correlation of the roller-compact ed revetment, reasonable recommendations are made to the construction methods an d corresponding shear strengths for the relevant quarry.