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一、概述“预应力钢绞线群锚张拉锚固体系”(以下简称 QM 体系)是根据建设部1984年科技开发项目——“预应力成套设备”而研制的一种大吨位钢绞线预应力束后张体系。该体系的基本内容为:研制张拉力至500t 级的钢绞线束锚具和张拉设备,编制有关的设计施工资料。QM 体系在研制过程中,分析了国内钢绞线生产今后要逐步挂靠国际标准,朝更高强度级别方向发展的趋势,及目前许多重点建设项目中使用大量
I. Overview “Prestressed steel strand group anchor tension anchorage solid system” (hereinafter abbreviated as QM system) is a large-tonnage steel strand pre-prepared according to the 1984 science and technology development project of the Ministry of Construction—“Prestressed Complete Equipment”. Stress beam post-tensioning system. The basic content of this system is: to develop steel strand anchorage and tensioning equipment with tension force up to 500t, and to compile relevant design and construction data. During the development process, the QM system analyzed the trend of domestic steel strand production to be gradually linked to international standards and to develop toward higher intensity levels, and it is currently used in many key construction projects.