泡沫轻质土在既有公路改扩建工程中的应用

Application of Foam Lightweight Soil in the Reconstruction and Expansion of Existing Highways

依托京沪高速公路新沂至江都改扩建工程,在路桥过渡段及一般纵断面抬升路段大规模采用泡沫轻质土进行路基帮宽,阐述泡沫轻质土的性能及施工特点,结合数值模拟手段,探究高速公路改扩建工程中泡沫轻质土帮宽路基与软土地基处理后的沉降变形特性,验证帮宽路基及路桥过渡段采用泡沫轻质土作为填料的适用性。

Relying on the reconstruction and expansion project of Beijing-Shanghai Expressway from Xinyi to Jiangdu,foam lightweight soil is used in large scale to help widen the roadbed in the transition section of road and bridge and the general longitudinal section lifting section,to elaborate the performance and construction characteristics of foam lightweight soil,and to investigate the characteristics of settlement and deformation after treatment of roadbed and soft ground after the reconstruction and expansion of the expressway using foam lightweight soil by combining with the means of numerical simulation.Combined with numerical simulation,the study investigates the settlement and deformation characteristics of roadbed and soft ground treatment in the highway reconstruction and expansion project,and verifies the applicability of foam lightweight soil as filler for widening roadbed and road and bridge transition section.