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去年我们设计的某厂开关板车间,面积较大,柱距为12公尺。为了响应推广预应力结构的号召,我们采用了12公尺跨度的预应力钢筋混凝土大型屋面板结构。在试制过程中,得到了苏联专家波良柯夫同志的具体指导和建筑工程部华东工程管理局的大力支持。边摸索边改进,从整体式预应力钢筋混凝土1.5公尺×12公尺的大型屋面板,发展到3公尺×12公尺的预应力钢筋混凝土蕊棒的屋面板结构。虽然由于目前高强度的钢丝尚不能大量供应,而采用了钢5热轧螺纹钢筋冷拉作为预应力钢筋,但已经显示了它在节约钢材方面的优越性。而更
Last year, we designed a factory switchboard workshop with a large area and a column spacing of 12 meters. In order to respond to the call for the promotion of prestressed structures, we adopted a 12-metre span prestressed reinforced concrete large roof structure. In the trial production process, it received concrete guidance from Comrade Bolyankov, a Soviet expert, and strong support from the East China Engineering Management Bureau of the Ministry of Construction Engineering. While improving the way, from the prefabricated concrete monolithic 1.5 m by 12 m large roof panels, to the 3 m × 12 m prestressed reinforced concrete core bar roof structure. Although the current high-strength steel wire is not yet available in large quantities, steel 5 hot-rolled rebar cold-drawn steel is used as a prestressed steel bar, but it has shown its superiority in saving steel. And more