一、概况 1959年12月27日,我队职工把目前我国第一个6上米跨度屋盖整体頂升工程的第一單元完成了。 这个車間的柱網尺寸为6.0×61.0m,屋架下弦标高为18.00m,主要承重构件为:鋼筋混凝土双肢格式柱,预应力鋼絲束拱形屋架,鋼筋泡沫混凝土大型屋面板。双肢格式柱总長20.650m,外圍尺寸为1.50×1.50m,分两片四节在現場預制。下 I. General Situation On December 27, 1959, the staff of our team completed the first unit of the whole project of jacking up the whole roof of 6 meters at the present in our country. The net size of the workshop is 6.0 × 61.0m, the lower chord elevation of the roof truss is 18.00m. The main load-bearing components are: double-limb reinforced concrete columns, prestressed steel truss arched truss, reinforced foam concrete large roofing panels. The double-limb format column has a total length of 20.650m and a peripheral size of 1.50 × 1.50m, prefabricated in two sections and four sections in the field. under