吊车梁选型错误北京铁路局北京勘测设计院李春瑞现象装配式单层钢筋混凝土工业房屋进行吊装预制混凝土构件施工时，发现吊车梁选型错误，其承载能力过大，截面高度过高，安装后将导致吊车不能正常行驶，因此只得将这些吊车梁报废，再按改正选型后的吊车梁进行预制，以满足... Crane beam selection error Beijing Institute of Railway Survey and Design Institute of Beijing Li Chunrui phenomenon Assembled single-story reinforced concrete industrial buildings for prefabricated concrete components construction hoisting, found that crane beam selection error, the carrying capacity is too large, the cross-section height is too high, after installation Will lead to the crane can not travel normally, so only these crane beam scrapped, and then select the correct type of crane beam prefabricated to meet ...