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1前言《冷轧带肋钢筋混凝土结构技术规程》颁布以来，冷轧带助钢筋预应力圆孔板标准图集相继问世。其生产工艺与原来基本相同，只是以带助钢筋代替冷板钢丝作受力主筋，混凝土强度等级降为C25。内蒙地区1997年颁布图集，目前已完成构件的产品换代并用于工程建设。在王年的监督
1 Foreword Since the promulgation of the “Technical Specification for Cold Rolled Ribbed Reinforced Concrete Structures”, the standard atlas of cold-rolled strips and steel reinforced prestressed circular orifices has been published one after another. The production process is basically the same as the original, except that the steel reinforcement steel is used instead of the cold steel wire as the stressed main reinforcement, and the concrete strength grade is reduced to C25. The Atlas was published in 1997 in Inner Mongolia. At present, it has completed the replacement of components and used it for construction. The supervision of the year