深厚淤泥路基填筑及对周边环境影响的数值分析

淤泥具有低渗透、高含水、高压缩等特点,以此为基础的路基在填筑时需对淤泥层进行处理以达到工程安全和使用的要求.某区中央大道为深厚淤泥路基,填筑时采用"碎石桩+超载预压"的方法对深厚淤泥层进行处理.利用数值模拟的方法,计算分析该路基填筑及后期运营时的沉降及其对周边环境影响的范围及程度,针对现场调查和计算结果给出深厚淤泥路基的加固措施及计算建议.对于深厚淤泥路基填筑所采用的计算分析方法可为类似工程设计提供参考.

Numerical Analysis on Deep Sludge Subgrade Filling and Its Impact on Surrounding Environment

Sludge has the characteristics of low permeability,high property and high compressibility. When the deep sludge taken as subgrade,it has to be treated in order to meet the requirements of the safety and use of the engineering. The subgrade of the main street in a district is the deep sludge,the gravel pile and the surcharge preloading is taken to deal with the deep sludge during the roadbed construction. The method of numerical simulation and analysis is used to calculate and analyze the settling of the subgrade filling and its effect on the surrounding environment. Finally, based on the field investigations and the results of calculation, some reinforcements of the deep sludge subgrade filling and the advice of the numerical simulation are introduced . The methods of calculation and analysis used in this paper can provide a reference for other engineering of the deep sludge subgrade filling.