梯形鋼屋架下弦彈性伸長對支承構(gòu)件的影響
趙廣鵬
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趙廣鵬 (中國電子工程設(shè)計院 北京 100840)
[提要] 兩端鉸支于柱頂?shù)目缍葹?0,36m的梯形鋼屋架,在某些情況下屋架下弦彈性伸長對支承邊柱產(chǎn)生較大的附加內(nèi)力,在設(shè)計中不容忽視。通過工程實例進(jìn)行了分析,提出了具體的設(shè)計建議。
[關(guān)鍵詞] 彈性伸長 附加內(nèi)力 結(jié)構(gòu)變形When a trapezoid steel roof truss of 30,36m span is simply supported on the top of side column, the additional internal force of the side column caused by the elastic elongation of lower chord should not be neglected in the design.
Keywords: elastic elongation; additional internal force; deformation