摘要
高液限土具有多次干湿循环强度趋稳的特点,采用与强度有关的固结压缩理论计算高液限土直接填筑路堤的沉降并不完善。故高液限土路堤自密沉降成为设计、施工的关键。现结合广梧高速公路高液限土直接填筑的工程实践,引入空气率指标,依据土体固、液、气三相物理指标的变化特点和相互关系,获得高液限土直接填筑路堤的自密沉降计算结果,并与分层总和法、积分法及实测结果对比分析表明,该计算方法能获得较好的可靠性。
It＇noappropriate to calculate high liquid limisoil g direcfilling embankmenown deformation with theory of compression and consolidation, foit＇ strength istable with more Wetting-drying Cycles. The reliability of settlemenof embankmenconsolidation ithe key to solve the problem of design and construction fodirecfilling embankment. Combined with projecfact, carry on airate indicatocomparative analysis. The calculation formuldeveloped are based on the deformative characteristicand the relationship between soil＇ solid, liquid and gas. The settlemencalculation resultindicate thathe method can gebettereliable resulthan layer- wise summa- tion method and integration method.
出处
《科学技术与工程》
北大核心
2013年第33期10046-10049,共4页
Science Technology and Engineering
关键词
高液限土
直接填筑
自密沉降
空气率
high liquid limit soil direct filling self-compacting settlemen air rate
