摘要
为研究软基路段不均匀沉降的原因,探讨长周期沉降演化规律、沉降速率特征指标评价,以及其选择依据,为大修养护提供合理的对策建议,根据路段和软基性质、软基和沉降维修处理方式进行典型断面分类、沉降、水平位移监测。结果表明,沉降观测是判断路面沉降收敛最直观的方法。沿海高速公路运营期长期的沉降观测数据揭示,运营期路基沉降发展一般小于80 mm,路基沉降总体可控,但路基沉降长周期历时发展的收敛特征不明显,传统主固结压缩沉降理论解读存在困难。
In order to provide the reasonable countermeasures and suggestions for overhaul and maintenance, the reasons of road uneven settlement of soft ground are studied, and the evolution law of long-term settlement, the evaluation and selection basis of settlement rate characteristic index are researched. The classification of typical sections, settlement and horizontal displacement monitoring are carried out according to sections and soft foundation properties, soft foundation and settlement maintenance treatment methods. The results show that settlement observation is the most intuitive method to judge the convergence of pavement settlement. The long-term settlement observation data during the operation period of coastal expressways reveal that the development of subgrade settlement during the operation period is generally less than 80 mm, and the subgrade settlement is generally controllable. However, the convergence characteristics of long period development of subgrade settlement are not obvious, and it is difficult to interpret the traditional theory of main consolidation compression settlement.
作者
胡健
王坤
HU Jian;WANG Kun(Jiangsu Xia ndai Engineering Testing Co.,Ltd.,Nanjing 210000,China;Jiangsu Xiandai Road&Bridge Co.,Ltd.,Nanjing 210000,China)
出处
《交通科技》
2022年第2期17-21,共5页
Transportation Science & Technology
关键词
沿海高速
路基变形
监测分析
coastal highway
subgrade deformation
monitoring and analysis
