Journal of South China University of Technology (Natural Science Edition) ›› 2014, Vol. 42 ›› Issue (11): 99-105,120.doi: 10.3969/j.issn.1000-565X.2014.11.015

• Architecture & Civil Engineering • Previous Articles     Next Articles

A Simplified Formula of Effective Flange Width of RC Frame Considering Slab Reinforcement Participation

Wang Su- guo   

  1. College of Civil Engineering,Fuzhou University,Fuzhou 350116,Fujian,China
  • Received:2014-07-16 Revised:2014-08-31 Online:2014-11-25 Published:2014-11-17
  • Contact: 王素裹(1984-)，女，博士，讲师，主要从事结构设计理论和抗震分析研究． E-mail:wangsuguo@foxmail.com
  • About author:王素裹(1984-)，女，博士，讲师，主要从事结构设计理论和抗震分析研究．
  • Supported by:

    国家自然科学基金资助项目(51208114);福建省自然科学基金资助项目(2013J05070);福州大学科技发展基金 资助项目(2012- XQ-34)

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Abstract:

The current theoretical calculation formula of effective flange width of RC frame considering slab rein- forcement participation is too complicated and inconvenient for practical application.In order to solve these prob- lems,by taking into account two main factors influencing effective flange width,namely,axial compression ratio and joint type,RC frames with different axial compression ratios are designed and a numerical regression analysis on the distribution of the effective flange width with different joint types is conducted.Thus,a simplified formula of effective flange width is obtained,which is convenient for practical application.Then,some issues for improving designs are suggested for the purpose of No Collapsing in the Strong Earthquake,and the suggestions and the sim- plified formulas are verified by an example.The results show that (1) the simplified formula is simple and easy to handle,so it is feasible in actual designs; and (2) the suggestions help to realize the purpose of No Collapsing in the Strong Earthquake better.

Key words: reinforced concrete, beams, slab reinforcement, effective flange width, numerical analysis, structural design

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