The surface of the circular pole is presented in moire,which has no neat edges or obvious depth....[继续阅读]

    5. 4. 1 Protection Layer of ConcreteThe thickness of protection layer of concrete for the prestressed main reinforcement shall not beless than 20 mm,refer to Table 2 for the allowable deviation of thickness of protection layer.Table 2 Allowable Deviation ...[继续阅读]

    Dense micropores presented on outer surface of the circular pole....[继续阅读]

    5. 3. 1 Design Strength Grade of ConcreteThe design strength grade of the concrete shall not be less than C50,it shall not be less than 75%of the design strength grade when the prestress is applied. The design strength grade shall be reachedwhen the concr...[继续阅读]

    The technical requirements of the testing instrument and equipment shall comply with theprovisions of GB/T 4623-2006....[继续阅读]

    6. 2. 1 Cantilever type test method shall be adopted for the circular pole,the cantilever type testmethods and layout of testing instruments are shown as Figure 2.6. 2. 2 Procedures for loading on the circular pole are shown as follows:Step 1: Start to lo...[继续阅读]

    4. 2. 1 SpecificationHere:outer diameter of circular pole: the outer diameter of the circular pole,in mm.nominal capacity of circular pole: the nominal capacity of circular pole,in kN·m.height above ground level: the height above the ground,in m.burial de...[继续阅读]

    Lumps falling off from the inner wall of the circular concrete pole....[继续阅读]

    The appearance quality shall comply with the provisions of Table 3.Table 3 Appearance Quality IndexNo.Name of itemType of itemTechnical requirements1CrackAThere shall be no circumferential or longitudinal cracks,but the crazes,watergrains and irregular cr...[继续阅读]

    The grouping and tensile stress of main reinforcement shall ensure that the stress on the steelwire or reinforcement is even. The tensile stress of prestressed main reinforcement shall not be lessthan its design value. The adoption of super-tensioning met...[继续阅读]