- 摘 要
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（中國市政工程中南設計研究總院有限公司， 武漢 430010）
［摘要］通過定義鋼-混凝土組合梁的撓度放大系數，總結了不同計算方法得到的撓度放大系數計算公式，通過作圖分析了各種計算方法的特點及適用范圍。對比分析了不同荷載形式下兩端簡支梁以及不同邊界條件下單跨組合梁受均布荷載作用時的撓度放大系數與精確解的誤差；與已有試驗結果對比發(fā)現改進折減剛度法得到的計算值與試驗值吻合較好，表明改進折減剛度法可應用于單跨鋼-混凝土組合梁的撓度計算，公式簡單，計算方便，精度較高。
［關鍵詞］組合梁； 部分抗剪連接； 改進折減剛度法； 撓度放大系數
中圖分類號：TU398-9文獻標識碼：A文章編號：1002-848X(2019)08-0085-06
Study on deflection calculation method of steel-concrete composite beam
Chen Dequan, Chen Qiang, Fan Jun
(Central and Southern China Municipal Engineering Design & Research Insitute Co., Ltd., Wuhan 430010, China)
Abstract:By defining the deflection amplification factor of steel\|concrete composite beam, the formula of deflection amplification factor obtained by different calculation methods was summarized, and the characteristics and applicable scope of various calculation methods were analyzed by hand computation. The errors of the deflection magnification factor of the exact solution of the simply supported beams with different load forms and the single span composite beams subjected to uniform load under different boundary conditions were compared and analyzed. Compared with the existing experimental results, the calculated results obtained by the modified reduced stiffness method (MRSM) were in good agreement with the experimental values, indicating that the MRSM could be applied to calculate the deflection of steel-concrete composite beams. The formula was simple, convenient for calculation, with high precision.
Keywords:composite beam; partial shear connection; modified reduced stiffness method; deflection amplification factor
作者簡介：陳德權，碩士，工程師，Email: chendequan610@126.com。
