粉喷桩加固城市深厚软土路堤效果实例分析

城市深厚软土路堤路基稳定性较差、沉降较大,即使采用粉喷桩加固后,有时亦难以达到满意效果。该文针对工程实例综合对比分析,认为软土层含水量高、塑性指数高、有机质及同结特性等主要因素导致水泥土强度较低,进而影响桩体质量和路堤路基稳定性及沉降,并提出改进措施,提出其它质量更可控制的地基处理方法和桥梁方案建议。

Analysis of Practical Example for Powder Spraying Pile Reinforcing Urban Deep Thick Soft Soil Embankment

The stability of urban deep-thick soft soil embankment subgrade is worse and its set- tlement is larger.Even if the powder spraying pile is used to reinforce,it is difficult to reach the satisfied result sometime.In the light of comprehensively comparison and analysis of the en- gineering practices,the article considers that the water content of soft soil is high,the plastic index is high,and the main factors of the organic matter and consolidation characteristic result in lower strength of the cement soil so as to influence the quality of the pile body and the sta- bility and settlement of the embankment subgrade,and puts forward the improving measures,and the other subgrade treatment methods more able to control the quality and the bridge scheme suggestions.