（1 江苏省结构工程重点实验室(苏州科技大学)， 苏州 215011； 2 中国建筑技术集团江苏建筑设计分院， 苏州 215000； 3 苏州市吴中区建筑工程施工图审查中心， 苏州 215128）

［摘要］T型钢PEC梁承载能力高、延性好，是在传统的钢-混凝土组合梁和型钢组合梁基础上发展起来的一种新型组合梁。利用弹性理论，建立了T型钢PEC梁型钢与混凝土交界面的相对滑移微分方程，得到了T型钢PEC梁在均布荷载和两点对称集中荷载工况下相对滑移的理论计算公式，给出了考虑滑移影响的T型钢PEC梁在均布荷载和两点对称集中荷载作用下的附加变形公式和总挠度计算公式，提出了完全剪切连接T型钢PEC梁的抗弯极限承载力简化计算公式，试验结果验证了计算公式的准确性和适用性。

［关键词］T型钢PEC梁； 承载能力； 组合梁； 滑移理论分析

中图分类号：TU398+.9文献标识码：A文章编号：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

作者简介：赵宝成，博士，教授，Email:zhaobc2000@163.com。