强夯法处理高原自重湿陷性黄土地基的控制与应用

Control and Application of Treatment of Self Weight Collapse Loess Foundation with Dynamic Consolidation

本文以青海省境内平安至阿岱高速公路一标段工程为实例,论述了自重湿陷性黄土特性、加固机理、施工要点、安全技术措施、质量控制和检测;实践证明强夯法具有适应土质范围广、施工工艺简便、施工周期短、质量容易控制、效果显著、经济易行等特点。同时经过对强夯法与其它施工方法在工程造价、施工工艺、施工工期及加固土体处理效果的对比分析,指出了强夯技术应用的适用性。

Based on the Ping＇an-Adai Expressway SectionⅠin Qinghai Province, this article expounds the characteristics of self weight collapse loess, strengthening mechanism, construction key points, safety technical measures, quality control and testing. Practice shows that the dynamic compaction method is adaptive to wide range of soil with simple construction technology, short construction period, easy quality control, good effect, and is economical and feasible. At the same time, through comparative analysis of dynamic compaction method with other methods in engineering cost, construction technology, construction period and treatment effect of soil reinforcement, the applicability of the dynamic compaction technology is pointed out.