中国科技论文
中國科技論文
중국과기논문
China Sciencepaper
2015年
19期
2312-2316
,共5页
天然土%水泥土挤密桩%CFG 桩%加筋作用%应力莫尔圆%极限状态%高速铁路路基
天然土%水泥土擠密樁%CFG 樁%加觔作用%應力莫爾圓%極限狀態%高速鐵路路基
천연토%수니토제밀장%CFG 장%가근작용%응력막이원%겁한상태%고속철로로기
natural soil%cement soil compaction pile%CFG pile%reinforced effect%Mohr circle of stress%limit state%high speed railway subgrade
将高速铁路地基处理中的水泥土挤密桩和 CFG 桩对地基土的加强作用看作是一种加筋作用，通过各自的应力莫尔圆，得到了水泥土挤密桩和 CFG 桩共同作用下桩间土的强度表达式。两个地基处理工程实例的桩间土物理力学指标变化情况表明，两类桩对地基土都有加筋作用；工程实例天然地基及复合地基载荷板试验结果也表明，长、短桩对地基承载增大均有贡献，并分析了长、短桩处理后地基土的强度及承载力特性。
將高速鐵路地基處理中的水泥土擠密樁和 CFG 樁對地基土的加彊作用看作是一種加觔作用，通過各自的應力莫爾圓，得到瞭水泥土擠密樁和 CFG 樁共同作用下樁間土的彊度錶達式。兩箇地基處理工程實例的樁間土物理力學指標變化情況錶明，兩類樁對地基土都有加觔作用；工程實例天然地基及複閤地基載荷闆試驗結果也錶明，長、短樁對地基承載增大均有貢獻，併分析瞭長、短樁處理後地基土的彊度及承載力特性。
장고속철로지기처리중적수니토제밀장화 CFG 장대지기토적가강작용간작시일충가근작용，통과각자적응력막이원，득도료수니토제밀장화 CFG 장공동작용하장간토적강도표체식。량개지기처리공정실례적장간토물리역학지표변화정황표명，량류장대지기토도유가근작용；공정실례천연지기급복합지기재하판시험결과야표명，장、단장대지기승재증대균유공헌，병분석료장、단장처리후지기토적강도급승재력특성。
In high speed railway foundation treatment,the authors regard the effect of cement soil compaction pile and CFG pile to soils as one kind of reinforced effect,through stress Mohr circles of soil mass reinforced by cement soil compaction pile and CFG pile,obtained the formula of strength of soil mass among these piles.Through the change of physical and mechanical index of soil mass among piles,proved that the two kind of piles can reinforced the soil mass.And then detailed analyzed the load plate test on natural foundation and long-short composite foundation,as well as the contribution of the two kind of piles to bearing capacity of foundation,so that readers can clearly understand the strength characteristics of soil and the bearing capacity of composite foun-dation.
