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前言弧形钢闸门支臂在框架平面内计算长度系数的确定,在我国1964年编制的《水工建筑物钢闸门设计规范》中,没有明确规定。国外有关规范,如西德《水工钢结构物的计算基础》、西德工业标准19704(西德规范草案1972,10);苏联《水工建筑物机械设备设计技术规范》(1961年);日本《闸门、压力钢管技术规范》(1964年)等,也没有支臂计算长度系数的具体规定。
Foreword The determination of the calculated length coefficient of the curved steel gate arm in the plane of the frame is not clearly defined in the “Code for the Design of Steel Gates for Hydraulic Structures” prepared by China in 1964. Foreign norms, such as West Germany’s “Calculation basis for hydraulic steel structures”, West German Industrial Standard 19704 (West Germany Draft Specification 1972, 10); Soviet “Technical Specifications for Hydraulic Building Mechanical Equipment Design” (1961); There are no specific provisions for calculating the length coefficient of the arm in Japan, such as “Gate and Pressure Pipe Technical Specifications” (1964).