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一、立项背景水泥土桩桩身强度及压缩模量较低,桩身材料强度决定了单桩极限承载力,桩土阻力得不到充分发挥;预应力混凝土管桩桩土阻力决定了单桩极限承载力,桩身材料强度得不到充分发挥。为了充分发挥水泥土桩桩土阻力和预应力混凝土管桩的桩身强度,有必要将两种桩型科学地复合,形成一种新的水泥土桩中插芯的组合型基桩技术。项目编号:住房和城乡建设部2010年科学技术项目计划,
First, the background of the project Cement soil pile body strength and compressive modulus is low, the strength of the pile material determines the ultimate bearing capacity of single pile, soil and soil resistance can not give full play; prestressed concrete pipe pile soil resistance determines the single pile Ultimate bearing capacity, the strength of the pile material can not be fully utilized. In order to give full play to the soil resistance of the cement-soil pile and the strength of the pre-stressed concrete pipe pile, it is necessary to combine the two pile types scientifically to form a new combined foundation pile technology of the mortise-inserted cement-soil pile. Project Number: Ministry of Housing and Urban Science and Technology Project Plan 2010,