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升板施工法的推广,促进了设计理论的研究和发展,对那些跨度和荷载较大或是抗裂性和刚度要求较高的升板工程,采用非预应力升板往往不能满足使用要求,宜向预应力方向发展。由于预应力升板结构要求双向配置多波的曲线预应力筋,很难沿用通常先留孔,然后穿筋张拉的后张法。为此,遵照伟大领袖毛主席关于“精心设计、精心施工”的教导,上海工业建筑设计院、上海市第五
The promotion of the riser construction method has promoted the research and development of design theory. For non-prestressed risers, those spanning and load-bearing projects or crack-resistance and stiffness-demanding riser projects often fail to meet the requirements. Should develop in the direction of prestressing. Because the prestressed riser structure requires bi-directional configuration of multi-wave curved prestressed tendons, it is difficult to use the post-tensioning method that usually retains the hole first and then pulls the tensile force. To this end, following the guidance of the great leader Chairman Mao on “meticulous design and careful construction”, Shanghai Institute of Industrial Architectural Design and Shanghai No. 5