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苏州高铁新城第一中小学的报告厅为单层钢筋混凝土框架结构,屋盖跨度27m×30m,屋顶覆土厚600mm。本小学的艺体馆为四层钢筋混凝土框架结构,屋盖跨度33.3m×27m。对报告厅和艺体馆屋盖均采用等高度桁架和变高度桁架两种方案分别进行设计,以研究变高度桁架的应用优势。计算结果表明,变高度桁架方案的结构体系合理,各项性能指标能够满足结构的抗震性能目标,且与等高度桁架方案相比,其经济性较好。
The lecture hall of the first primary and secondary schools in Suzhou High Speed Rail New City is a single-story reinforced concrete frame structure with a span of 27m × 30m and a covering thickness of 600mm. The primary school art gymnasium for the four-story reinforced concrete frame structure, roof span 33.3m × 27m. Both the lecture hall and the roof of the Yiwu Gymnasium are designed with equal height truss and variable height truss separately to study the application advantages of variable height truss. The calculation results show that the structural system of the variable height truss scheme is reasonable and all the performance indexes can meet the seismic performance objectives of the structure. Compared with the contour truss scheme, the proposed system is more economical.