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（1 江蘇省結(jié)構(gòu)工程重點(diǎn)實(shí)驗(yàn)室(蘇州科技大學(xué))， 蘇州 215011； 2 中國(guó)建筑技術(shù)集團(tuán)江蘇建筑設(shè)計(jì)分院， 蘇州 215000； 3 蘇州市吳中區(qū)建筑工程施工圖審查中心， 蘇州 215128）

［摘要］T型鋼P(yáng)EC梁承載能力高、延性好，是在傳統(tǒng)的鋼-混凝土組合梁和型鋼組合梁基礎(chǔ)上發(fā)展起來(lái)的一種新型組合梁。利用彈性理論，建立了T型鋼P(yáng)EC梁型鋼與混凝土交界面的相對(duì)滑移微分方程，得到了T型鋼P(yáng)EC梁在均布荷載和兩點(diǎn)對(duì)稱集中荷載工況下相對(duì)滑移的理論計(jì)算公式，給出了考慮滑移影響的T型鋼P(yáng)EC梁在均布荷載和兩點(diǎn)對(duì)稱集中荷載作用下的附加變形公式和總撓度計(jì)算公式，提出了完全剪切連接T型鋼P(yáng)EC梁的抗彎極限承載力簡(jiǎn)化計(jì)算公式，試驗(yàn)結(jié)果驗(yàn)證了計(jì)算公式的準(zhǔn)確性和適用性。

［關(guān)鍵詞］T型鋼P(yáng)EC梁； 承載能力； 組合梁； 滑移理論分析

中圖分類號(hào)：TU398+.9文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2018)02-0079-05

Load-bearing capacity calculation formula of T-typed  PEC steel beam

Zhao Baocheng1, Chen Xudong2, Shen Xiaoming3

(1 Jiangsu Key Laboratory of Structure Engineering (Suzhou University of Science and Technology), Suzhou 215011, China; 2 Jiangsu Buildings Design Branch, China Building Technique Group Co., Ltd., Suzhou 215000, China; 3 Suzhou Wuzhong District Construction Working Drawing Inspection Center, Suzhou 215128, China)

Abstract:T-typed PEC steel beam has high bearing capacity and good ductility. It is a new type of composite beam developed on the basis of traditional steel-concrete composite beam and steel composite beam. Using the elastic theory, relative slip differential equation of interface of T-typed PEC steel beam and concrete was established. The theoretical calculation formula of relative slip of the T-typed PEC steel beam under the working conditions of uniform load and two-point symmetrical concentrated load was obtained. Additional deformation formula and the calculation formula of the total deflection were provided for T-typed PEC steel beam under uniform load and two-point symmetrical concentrated load considering the slip effect. The simplified calculation formula of ultimate bending bearing capacity of T-typed PEC steel beam with full shear connection was provided. Test results verified the accuracy and applicability of the formulas.

Keywords:T-typed PEC steel beam; bearing capacity; composite beam; slip theory analysis

作者簡(jiǎn)介：趙寶成，博士，教授，Email:zhaobc2000@163.com。