門式輕鋼建筑結構材料選用的經濟性
劉承宗 陳建云
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劉承宗 （上海美建鋼結構有限公司 201103）陳建云 （河海大學 南京 210098）
[提要] 基于大量門式輕型建筑結構試設計用鋼量的統(tǒng)計數(shù)據和結構材料的市場價格、加工運輸費用等成本消耗，建立了相關的數(shù)學模型，進而分析了在門式輕型建筑的結構設計中，不同強度等級的主次結構材料的相對經濟性表現(xiàn)。分析表明：在不同的條件下，不同等級材料的經濟性能表現(xiàn)會發(fā)生優(yōu)與劣的轉換。分析主要考慮實際工程的應用，對具體的結構設計具有指導意義。
[關鍵詞] 門式輕型建筑 主結構 次結構 材料強度 經濟性
The relative economic performance of steel of various kinds of strength grade for application in rigid framing design and secondary framing design of portal frame structure is analyzed. The results are based on the statistics of steel consumption in trial design of steel structures and the total cost, including market price of the material, manufacturing and transporting cost, etc. The analysis indicates that the economic performance of structural material is concerned with the condition of steel structure. This paper focuses on the practical application but a pure theoretical research, and the results will instruct our design of practical projects.
Keywords: portal frames; rigid frame; secondary frame; material strength; economic performance
