登录
注册
E-alert
登录
注册
E-alert
CALCULATION METHOD FOR DAMAGE INDEX OF RC BEAM UNDER FATIGUE LOADING
-
摘要: 目前,国内外主要使用试验的方式研究钢筋混凝土梁疲劳弯曲性能。基于混凝土割线模量损伤与其塑性应变的线性关系,采用混凝土的塑性应变构造了损伤变量,并以此为依据推导了能够用于钢筋混凝土梁的弯曲疲劳全过程分析的损伤指标计算公式。通过与试验结果的比较,证明了该计算方法的适用性和可靠性。Abstract: At present, the existing researches on the fatigue performance of reinforced concrete beam are mainly madeby experiments．Based on the linear relationship between the damage of concrete secant modulus and plastic strain, the damage variable of the beam was established by plastic strain．And then, the calculation formula of damage indexwas derived, which could be used in the complete process analysis．Through the comparison with experimentalresults, the applicability and reliability of the formula was proved．
-
Key words:
- RC beam /
- bending fatigue /
- damage index /
- plastic strain
-
李秀芬,吴佩刚,赵光仪.高强混凝土梁抗弯疲劳性能的试验研究[J].土木工程学报,1997,30(5):37-42. [2] 王海超.钢筋混凝土构件腐蚀疲劳试验研究与理论分析[D].大连:大连理工大学,2004. [3] 朱红兵.公路钢筋混凝土简支梁桥疲劳试验与剩余寿命预测方法研究[D].长沙:中南大学,2011. [4] GB500102010混凝土结构设计规范[S]. [5] 赵东拂.混凝土多轴疲劳破坏准则研究[D].大连:大连理工大学,2002. [6] 潘华,邱洪兴.基于损伤力学的混凝土疲劳损伤模型[J].东南大学学报,2006,36(4):605-608. [7] Hognestad E.A Study of Combined Bending and Axial Load inReinforced Concrete Members[M].Bulletin No.399,Universityof Illinois Engineering Experiment Station,Urbara,IL,1951. [8] Jan Ove Hotmen.Fatigue of Concrete by Constant and VariableAmplitude Loading[J].Fatigue of Concrete Structures,1982,ACI,SP-75:71-110. [9] 李朝阳,宋玉普,车轶.混凝土的单轴抗压疲劳损伤累积性能研究[J].土木工程学报,2002,35(2):38-40. [10] 易成,朱红光,王青,等.疲劳荷载下混凝土梁弯曲损伤指标的探究[J].应用力学学报,2009,26(1):71-75. [11] 钟铭,任红伟,袁长卿.疲劳荷载作用下高强混凝土受弯构件的变形性能[J].公路交通科技,2005,22(11):105-109. [12] 宋玉普.混凝土结构的疲劳性能及设计原理[M].北京:机械工业出版社,2006:293-297. [13] 何世钦,滕起,徐锡权,等.混凝土梁腐蚀疲劳刚度衰减规律[J].哈尔滨工业大学学报,2008,40(6):961-964. -
点击查看大图
计量
- 文章访问数: 137
- HTML全文浏览量: 13
- PDF下载量: 57
- 被引次数: 0
下载:
