软基加固施工技术在市政道路施工中的有效应用

Effective application of soft foundation reinforcement construction technology in municipal road construction

某市政道路的路基存在较厚的软土层,主要为黏土、淤泥和淤泥混砂。为保证路基施工效果,采取真空联合堆载预压技术,对软基进行加固处理。研究过程分析了该技术的应用原理、工艺流程和实施要点,归纳了路基沉降和固结深度的计算方法。在软基加固前后,开展十字板剪切试验和钻孔取土检测,发现路基原状土抗剪强度、重塑土抗剪强度、含水率、孔隙比等土体性能参数均大幅改善,取得了良好的软基处理效果。

The roadbed of a municipal road has a thick soft soil layer,mainly composed of clay,silt,and silt mixed sand.To ensure the effectiveness of roadbed construction,vacuum combined preloading technology is adopted to reinforce the soft foundation.The research process analyzed the application principle,process flow,and implementation points of this technology,and summarized the calculation methods for roadbed settlement and consolidation depth.Before and after the reinforcement of the soft foundation,cross plate shear tests and drilling soil tests were conducted,and it was found that the soil performance parameters such as the shear strength of the original soil,the shear strength of the remolded soil,the water content,and the porosity of the roadbed were significantly improved,achieving good results in the treatment of the soft foundation.