|Table of Contents|

Analysis and calculation for flexural capacity of symmetrically reinforced concrete beams(PDF)

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2011年05期
Page:
72-76
Research Field:
Publishing date:
2011-10-20

Info

Title:
Analysis and calculation for flexural capacity of symmetrically reinforced concrete beams
Author(s):
GUO Jun-qing;  XIONG Er-gang;  YANG Kun
School of Civil Engineering, Chang'an University, Xi'an 710061, Shaanxi, China
Keywords:
structure engineering;  reinforced concrete beam;  symmetric reinforcement;  flexural capacity;  depth of compression zone;  longitudinal reinforcement
PACS:
TU375.1
DOI:
-
Abstract:
In order to deal with the problem that the strain of reinforcing bars in tension may be beyond the limit in the design of a doubly-reinforced concrete beam, the minimum depth of compression zone of its cross section was redefined. On the basis of computational theory for the flexural strength of doubly-reinforced concrete beams, the basic formulas for flexural strength of such beams were put forth. From the analysis of effect of depth of compression zone on stress of longitudinal reinforcement in compression, the corresponding practical method of computing the flexural strength of a symmetrically reinforced concrete beam was put forth. The example projects indicate that it is necessary to adopt the proposed method for the design of a symmetrically-reinforced concrete beam so as to ensure its safety. If traditional method was used, it would be unsafe in most cases, and the error could be more than 10% in the worst case. 2 tabs, 2 figs, 9 refs.

References:

[1] GB 50010—2002,混凝土结构设计规范[S].
[2]程文瀼,康谷贻,颜德姮.混凝土结构[M].北京:中国建筑工业出版社,2002.
[3]郭军庆,雷自学.钢筋混凝土受弯构件受压区高度的限定条件[J].工业建筑,1999,29(8):64-65,70. GUO Jun-qing,LEI Zi-xue.The confining conditions for compression zone of flexural RC members[J].Industrial Construction,1999,29(8):64-65,70.
[4]徐新生,纪 涛,郑永峰.FRP筋混凝土梁弯曲试验及设计方法探讨[J].建筑结构,2008,38(11):45-48. XU Xin-sheng,JI Tao,ZHENG Yong-feng.Test and design methed on flexural resistance performance of concrete beam with FRP bar[J].Building Structure,2008,38(11):45-48.
[5]叶列平,王宇航.中、美规范钢筋混凝土梁斜截面承载力的计算对比[J].建筑科学与工程学报,2008,25(1):88-95. YE Lie-ping,WANG Yu-hang.Calculation and comparison of shear strength of RC beams between Chinese and American codes[J].Journal of Architecture and Civil Engineering,2008,25(1):88-95.
[6]张志权,赵胜民,张玉芬,等.外方内圆钢管混凝土轴压承载力计算方法[J].建筑科学与工程学报,2009,26(2):63-67. ZHANG Zhi-quan,ZHAO Sheng-min,ZHANG Yu-fen,et al.Caculation method of axial bearing capacity of concrete-filled square steel tubular columns reinforced by inner circular steel tube[J].Journal of Architecture and Civil Engineering,2009,26(2):63-67.
[7]赵均海,张兆强,魏学英,等.固支圆板在线性荷载下的极限解[J].长安大学学报:自然科学版,2008,28(1):81-86. ZHAO Jun-hai,ZHANG Zhao-qiang,WEI Xue-ying et al.Plastic limit analysis of clamped circular plate under linear distributed load[J].Journal of Chang'an University:Natural Science Edition,2008,28(1):81-86.
[8]赵均海,孟晓健,刘建军,等.圆中空夹层钢管混凝土短柱的承载力[J].长安大学学报:自然科学版,2009,29(1):70-74. ZHAO Jun-hai,MENG Xiao-jian,LIU Jian-jun,et al.Bearing capacity of concrete-filled double-skin steel-tube stub column[J].Journal of Chang'an University:Natural Science Edition,2009,29(1):70-74.
[9]魏巍巍,贡金鑫,田 磊.钢筋混凝土构件受剪承载力对比分析[J].建筑科学与工程学报,2010,27(2):25-37,44. WEI Wei-wei,GONG Jin-xin,TIAN Lei.Comparative analysis of shear capacity for reinforced concrete members[J].Journal of Architecture and Civil Engineering,2010,27(2):25-37,44.

Memo

Memo:
-
Last Update: 2011-10-20