软基路堤上预制梁场的不均匀沉降分析

摘要

By combining the results of field test and finite element numerical simulation ,the settlement regularity of the prefabrieated beam plant on the soft soil embankment which is under preloading phase is analyzed. The calculation results shows that the lay out of the beam plant on the embankment of soft ground may increase the preconsolidation settlement of embankment. But it is almost no effect to total settlement. Simultaneously ,it can improve the compression modulus of soil and reduce the post-construction settlement of embankment through grouting treatment. From the long-term,the longitudinal differential settlement of the beam plant is small,whereas the transverse differential settlement is obvious.%通过结合现场实测和有限元软件数值模拟结果,分析了处于预压期软基路堤上的预制梁场的沉降规律.研究结果表明,在处于预压期的软基路段上布置梁场产生的重载作用将加快路堤的前期固结沉降,而对于路基总体沉降几乎无影响;此外表明,通过压浆处理可提高土体的压缩模量,降低路基的工后沉降.从长期数据来看,梁场沿纵向沉降差较小,而横向沉降差较明显.