摘要
为了预防G40公路陈海立交D匝道路基拓宽工程因新旧路基不均匀沉降而出现的路面纵向开裂等病害,在现有改扩建研究成果基础上,借助数值分析软件,分析了不同软土地基处理方式对新旧路基差异沉降的影响;通过比较路基中央处和路肩处的沉降量以及差异沉降,认为泡沫轻质土的处理效果最优,其次是水泥粉煤灰碎石(CFG)桩和预应力(PTC)管桩处理方案。最后,结合陈海立交D匝道加宽工程的特殊性,推荐采用泡沫轻质土路基处理方案。
In order to prevent the diseases of pavement longitudinal cracking due to uneven settlement of the old and new subgrades in G40 Highway Chenhai Interchange D Ramp Subgrade widening Project,based on the existing research results of reconstruction and expansion,and with the help of numerical analysis software,the influence of the different soft soil foundation treatment methods on the differential settlement of the new and old subgrades is analyzed.By comparing the settlement of the center and shoulder of the subgrade and the differential settlement,it is considered that the treatment effect of the foam light soil is the best.The cement fly-ash gravel(CFG)pile and the prestressed tubular concrete(PTC)pile schemes are compared.Finally,combined with the particularity of Chenhai Interchange D Ramp Widening Project,the foam light soil subgrade treatment scheme is recommended.
出处
《城市道桥与防洪》
2020年第6期31-33,M0006,M0007,共5页
Urban Roads Bridges & Flood Control
关键词
路基拓宽
差异沉降
泡沫轻质土
subgrade widening
differential settlement
foam light soil
