(北京市建筑设计研究院有限公司， 北京 100045)

［摘要］以变截面开孔组合钢梁楼盖为研究对象，采用有限元法模拟计算，验证了采用规范算法对变截面开孔组合钢梁的适用性。分析表明，规范算法得到的钢梁应力、变形、舒适度等结果较可靠，且偏于安全。对比分析了有限元模拟计算和规范算法，发现不同几何参数（变截面段长度、跨中开孔位置、开孔率等）对强度、变形、楼盖舒适度等指标无显著影响。 对组合钢梁楼盖内的钢筋构造、开孔的加劲构造给出了建议。

［关键词］变截面；开孔；组合钢梁；楼盖舒适度 

中图分类号：TU398-9 文献标识码：A文章编号：1002-848X(2021)19-0126-05

Analysis on design of composite steel beam floor with variable cross section and opening 

CUI  Juhong 

(Beijing Institute of Architectural Design, Beijing 100045， China) 

Abstract: Taking the composite steel beam floor with variable cross section and opening as the research object, the finite element method was used to simulate and calculate, and the applicability of the standard algorithm to the composite steel beam with variable cross section and opening was verified. The analysis shows that the results of stress, deformation and comfort of the steel beam obtained by the standard algorithm are reliable and safe. Through comparative analysis of the finite element simulation calculation and the standard algorithm, it is found that different geometric parameters (length of variable cross section, opening position in the span, opening rate, etc.) have no significant impact on the strength, deformation, floor comfort and other indicators. Suggestions are given on the reinforcement structure and opening stiffener structure in the composite steel beam floor.

Keywords:variable cross section； opening； composite steel beam； floor comfort

作者简介：崔巨宏，学士，高级工程师，一级注册结构工程师，Email：cuijuhong@sina.com。