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盱眙體育館屋蓋結(jié)構(gòu)設(shè)計
虞終軍,劉冰,陸燕
摘 要
(同濟大學(xué)建筑設(shè)計研究院,上海 200092)
[摘要]盱眙體育館鋼屋蓋采用了輕巧的預(yù)應(yīng)力張拉鋼桁架結(jié)構(gòu)體系,結(jié)合初始態(tài)張拉分析及靜力性能分析,提出了合理運用張拉預(yù)應(yīng)力的方法。通過動力性能及特征值屈曲分析找出結(jié)構(gòu)的相對薄弱環(huán)節(jié);幾何非線性整體穩(wěn)定分析中考慮了初始缺陷的影響,計算結(jié)果表明結(jié)構(gòu)不會發(fā)生整體失穩(wěn)和局部失穩(wěn)。對拉索錨固的關(guān)鍵節(jié)點進行彈塑性分析表明,節(jié)點具有良好的力學(xué)承載性能。
[關(guān)鍵詞]預(yù)應(yīng)力鋼桁架;張拉體系;特征值屈曲;非線性;套鋼管節(jié)點
Design of Roof Structure of Xuyi Gymnasium
Yu Zhongjun,Liu Bing,Lu Yan(Architecture Design and Research Institute of Tongji University,Shanghai 200092,China)
Abstract:The roof of Xuyi Gym is a typical pre-stressed steel truss.It mainly introduced the structure layout,and provided a light and efficient tension system. With initial pre-stress and static analysis,the effective method to use the pre-stress was given.Based on the free vibration and eigenvalue buckling analysis,the structural weakness was found. The structural stability analysis,considering the geometric nonlinearity and initial imperfection,is also conducted. The analysis results show that the global and local buckling can be fully avoided. For some key joints,such as cable embedded joint,the exact elastic-plastic analysis was taken,and the results demonstrated the excellent loading capacity of pipe sleeve joint.
Keywords:pre-stressed steel truss; tension system; eigenvalue buckling; non-linear; pipe sleeve joint
參考文獻
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