预应力混凝土管桩施工介绍.rar

，质量容易保证等特点，在立交桥、城市高架桥中广泛采用，上海地区尤其是这样。
  预应力混凝土管桩施工主要有起吊、定位、打桩、接桩等主要步骤。施工中也会出现桩头爆裂、桩身裂缝等问题，视破坏情况，可用环氧树脂补强，必要时要将坏桩报废并同时补桩。
  根据有关规定，预应力管桩必须进行质量抽检，可采用静载、动载等方法。
, Quality assurance and so easy, in the overpass, Viaduct widely used in the Shanghai region in particular.
  Construction of Prestressed Concrete Pipe main lifting, positioning, piling, and other major steps in the pile. Construction will occur in the pile head burst, shaft cracks, depending on the damage, reinforced epoxy resin can be used, if necessary, to bad scrap pile and pile up at the same time.
  Under the provisions of prestressed concrete pipe must be the quality of sampling, can be used static, dynamic load and other methods.

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