论文部分内容阅读
CFG复合地基竖向加固作用已得到深入研究和广泛运用,但在国内外相关领域未见CFG复合地基的侧向变形和侧压力研究成果。现行国家和行业相关规范、规程缺乏对开挖条件下CFG复合地基侧向基坑支护结构设计的规定和指导。笔者从CFG复合地基竖向工作机理出发,判断CFG复合地基侧向加固作用不可小视,凭借数值模拟规律和跟踪勘察数据,结合基坑监测反馈,对济南省会文化艺术中心(大剧院)舞台台仓锚拉双排桩支护结构进行了优化,从三排锚索减少到一排。尽管如此,施工变形监测结果只是相关计算的1/3,这说明:CFG复合地基侧向加固作用可以有效降低支护结构变形,应值得行业关注和研究。
The vertical reinforcement effect of CFG composite foundation has been deeply studied and widely used, but the research results of lateral deformation and lateral pressure of CFG composite foundation are not found in related fields at home and abroad. The current national and industry-related norms and regulations lack the provisions and guidance for the design of the lateral foundation pit supporting structure under excavation conditions. Based on the vertical working mechanism of CFG composite foundation, the author judges that the lateral reinforcement of CFG composite foundation should not be underestimated. Based on numerical simulation and tracking survey data, combined with the feedback of foundation pit monitoring, Anchored double-row piles support structure is optimized, from three rows of anchor cable reduced to a row. Nevertheless, the result of construction deformation monitoring is only 1/3 of the relevant calculation, which shows that the lateral reinforcement of CFG composite foundation can effectively reduce the deformation of the support structure, which deserves industry attention and research.