高速公路软基路堤临界高度研究  

Research on Critical Height of Embankment During the Construction on Soft Ground

作　　者：马成勇 彭月明 宫长兴 

机构地区：[1]河北省路桥集团有限公司,石家庄050021 [2]河北省建筑科学研究院,石家庄050021

出　　处：《交通科技》2008年第1期59-61,共3页Transportation Science & Technology

摘　　要：在软土地基上修筑高速公路存在路堤临界高度的问题,根据某高速公路的现场实测数据,探讨了临界高度对软基沉降、侧向位移的影响。分析结果表明:路堤填筑到临界高度以后,软基的沉降量、沉降速率、侧向位移量都急剧增大。最后,应用遗传神经网络算法来计算路堤临界高度,并结合工程实例验证了该算法具有较高的预报精度。There are critical height signs when building expressway on the soft ground. The impact of critical height on the settlement and lateral displacement of the soft ground is discussed according to the achievement of the trial live in this paper. The analysis result indicates, after reaching the critical height of the embankment, the value, rate of settlement and the lateral displacement all increase intensely. And the critical height is calculated by the method of genetic neural networks. At last, the high forecasting precision is testified by the project cases.

关 键 词：软土地基 临界高度 硬壳层 侧向位移 遗传神经网络 

分 类 号：U213.14[交通运输工程—道路与铁道工程] U416.1