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1982年,杭州市建筑设计院与我厂共同进行预应力钢筋混凝土梁的优化设计生产试验,于1983年7月正式通过技术鉴定。认为:该研究项目的选题能结合我国的实际,有一定的现实意义和创见,具有国内先进水平、较大的实用价值和显著的经济效益。它是以设计规范TJ10-74为依据,把张拉控制应力、截面高度、宽度以及配筋率为设计变量,以梁单位长度成本为目的进行优化设计。其目的是使梁单位长度成本降到最低。(优化设计法见《土木工程学报》1982年第1期)。针对我厂生产的矩形梁,用电子计算机求得优
In 1982, Hangzhou Institute of Architectural Design and our factory jointly conducted the optimal design and production test of pre-stressed reinforced concrete beams. In July 1983, it officially passed the technical appraisal. It is believed that the topic of the research project can be combined with the reality of our country and has certain practical significance and originality. It has advanced domestic level, great practical value and remarkable economic benefits. It is based on the design specification TJ10-74, the tension control stress, section height, width, and reinforcement ratio are design variables, and the optimization is designed with the unit length cost of the beam. Its purpose is to minimize the cost per unit length of the beam. (Optimum design method, see “Journal of Civil Engineering” 1982 No. 1). For the rectangular beam produced by our factory, use the computer to obtain excellent