论文部分内容阅读
文章根据204国道江苏段改扩建段地基处理优化实例分析,针对低路堤特征,就地基处理优化分析原则,以及软土工程特性综合评价和软土地基软土分布特征分析等应用于地基处理设计优化进行了研究。提出了综合考虑软土物理状态,基本力学特性,包括天然沉积土结构性对其宏观力学特性影响等,科学评价天然沉积软土地基工程特性的思路。针对低路堤荷载水平相对较低的特点,充分利用天然地基综合承载性能,包括软土地基互层结构的固结排水性能,天然沉积硬壳层的综合承载性能,天然沉积软土结构性宏观土力学特征等,优先考虑地基浅层处置+预压法方案,科学合理选择地基加固处理深度。
Based on the analysis of the optimization of foundation treatment in the reconstruction and extension of 204 National Highway in Jiangsu Province, this paper applies optimization principles of foundation treatment to the analysis of low embankment, as well as the comprehensive evaluation of engineering properties of soft soil and the analysis of the distribution characteristics of soft soil in soft soil foundation. Were studied. The idea of comprehensively considering the physical state of soft soil, basic mechanical properties, including the influence of structural properties of natural soils on its macroscopic mechanical properties, and evaluating the engineering properties of natural sedimentary soft ground is proposed. In view of the relatively low load level of embankment, the comprehensive bearing capacity of natural foundation is fully utilized, including the consolidated drainage performance of the inter-layer soft soil foundation, the comprehensive bearing capacity of the natural sedimentary hard shell, Mechanical characteristics, etc., give priority to shallow foundation disposal + preloading method, scientific and rational choice of ground reinforcement depth.