All raw materials shall be provided with the product certificates or inspection reports issued bythe manufacturers. Factory inspection shall be performed for the materials entered into the factory....[继续阅读]

    6. 3. 1 The cracking resistance test coefficient γ0cr of the circular pole is obtained by the ratio of initialcrack bending moment and standard inspection bending moment:WhereMf means the actually measured initial crack bending moment value,in kN·m.6. 3. ...[继续阅读]

    7. 3. 1 Inspection ItemsIt shall include the inspection of concrete strength,appearance quality,dimension deviation(excluding thickness of protection cover),cracking resistance as well as the inspection of deflectionunder standard test bending moment.7. 3...[继续阅读]

    For the horizontal cantilever type test,the pole top deflection fs under any level of load will becalculated according to the following equation:Wherefc means the deformation value at the support point C on the pole top measured by measuringinstrument,in ...[继续阅读]

    This standard specifies the product classifications,technical requirements,test methods,inspection rules,markings as well as the ex-factory certificates,storage and transport of circularprestressed concrete poles for substation of electrified railway.This...[继续阅读]

    5. 2. 1 CementPortland cement,ordinary Portland cement or sulfate resistant Portland cement should be used,with the strength grade not less than 42.5,and the performance shall comply with the requirements ofGB 175 and GB 748.5.2.2 AggregateThe natural med...[继续阅读]

    The allowable deviation of dimension of each part shall comply with the provisions of Table 2....[继续阅读]

    The honeycomb void on surface of concrete caused by leakage or lack of cement mortar....[继续阅读]

    The ex-factory certificate shall include the following contents:a) number of certificate;b) codes for implementation standards;c) manufacturers name(or manufacturer logo),the year and month of manufacture;d) specification and quantity of the products;e) t...[继续阅读]

    The standard test value of bending moment at ground surface or top surface of foundation withthe circular concrete pole being under the ultimate limit state of bearing capability: the nominalcapability of the circular pole,indicated by "Mk"....[继续阅读]