(清华大学土木工程系，结构工程与振动教育部重点实验室，北京 100084)

［摘要］通过ANSYS软件对混凝土翼板开洞的钢-混凝土组合梁进行了分析计算，与试验结果的对比表明有限元计算结果可靠。通过有限元建模计算分析，探讨了混凝土翼板的正应力分布规律，并通过参数分析，提出了在弹性范围内钢-混凝土组合梁混凝土翼板开洞截面有效宽度的实用设计公式，并与试验测得的挠度及有限元计算挠度进行了对比。

［关键词］钢-混凝土组合梁；翼板开洞；有效翼缘宽度

Analysis of effective flange width on composite steel-concrete beams with openings in concrete slab

Nie Jianguo, Wang Yuhang(Dept.of Civil Eng.,Key Lab.Structural Eng.and Vibration of China Education Ministry，Tsinghua Univ.，Beijing 100084，China)

Abstract:Composite steel-concrete beams with openings in concrete slab were analyzed by finite element program ANSYS, and the predicted results were verified by experiment. Normal stress distributed law was analyzed by the results of finite element program. Parametric analysis was conducted to give the practical simplified design method for effective width of composite steel-concrete beams with openings in concrete slab. The deflection predicted by simplified method was compared with the test results and FEA results.

Keywords:composite steel-concrete beams; openings in concrete slab; effective flange width

国家杰出青年科学基金资助项目(50025822)。

作者简介：聂建国，教授，博士生导师，教育部长江学者特聘教授，Email:niejg@mail.tsinghua.edu.cn