全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

基于收缩徐变短期试验结果的高性能粉煤灰混凝土桥梁长期效应预测

, PP. 64-69

Keywords: 桥梁工程,高性能粉煤灰混凝土,收缩徐变试验,长期效应,模型梁

Full-Text   Cite this paper   Add to My Lib

Abstract:

?以8根不同掺量的高性能粉煤灰混凝土无黏结预应力梁的收缩徐变试验为基础,提出了从混凝土模型梁短期试验值推算相应混凝土梁在该桥梁工作环境下收缩应变及徐变系数的方法,进而得出桥梁的徐变长期效应计算式;结合桥梁规范JTGD62—2004中收缩模型与徐变模型的思想,得出计算混凝土桥梁收缩应变及徐变系数的修正公式。该公式预测值与试验结果的比较表明:预测值具有较好的精度,且该预测方法不需做材料的收缩徐变试验,亦避免了从标准环境下用试验值推算桥梁工作环境下收缩徐变可能产生的误差。

References

[1]  HUANG Guo-xing,HUI Rong-yan.Concrete Shrinkage[M].Beijing:China Railway Publishing House,1990.
[2]  ZHOU Lu,CHEN Yong-chun.Shrinkage and Creep[M].Beijing:China Railway Publishing House,1994.
[3]  BRANSON D E.Deformation of Concrete Structures[M].New York:McGraw-Hill Book Company,1977.
[4]  LEI Zi-xue,YAN Xing-wei,DONG San-sheng.Effect of Shrinkage and Creep of Concrete on Curved Steel-concrete Composite Box Girder Bridges[J].Journal of Chang'an University:Natural Science Edition,2008,28(5):77-80.
[5]  SONG Bing,WANG Zhan.Influences of Autogenous Shrinkage of High-strength Concrete on Axial Compression Mechanics Behavior of Concrete-filled Steel Tube[J].Journal of Architecture and Civil Engineering,2007,24(2):59-62.
[6]  WEN Qing-jie,YE Jian-shu.Long-term Effect Analysis of Widening for Concrete T-girder Bridge[J].Journal of Traffic and Transportation Engineering,2007,7(6):90-95.
[7]  SHEN Pu-sheng,FANG Hui,XIA Xin-hong,et al.Simplified Analysis for Frame Structure Considering Construction Process, Shrinkage and Creep[J].Journal of Architecture and Civil Engineering,2006,23(2):41-45.
[8]  WANG Hua,XUE Wei-chen.Deflections of Steel-concrete Composite Beams Due to Shrinkage and Creep[J].Journal of Chang'an University:Natural Science Edition,2004,24(1):56-60.
[9]  GAO Xiao-jian,BA Heng-jing,YANG Ying-zi.Effect of Mineral Admixture on Early Age Cracking of Concrete[J].Journal of Architecture and Civil Engineering,2006,23(4):19-23.
[10]  WU Xiao-ping,SONG Yi-fan,HE Shuan-hai.Analysis of Long-term Deflection of Reinforced Concrete Beams[J].Journal of Traffic and Transportation Engineering,2001,1(4):48-50.
[11]  HUANG Ping-ming,WANG Da,ZHANG Yong-jian.Sensitivity Parameters Analysis of PC Oblique-pulling Truss Bridge[J].Journal of Architecture and Civil Engineering,2007,24(1):59-63.
[12]  HU Di.Analysis of Creep Effect in Prestressed Concrete Bridges[D].Changsha:Central South Univer-sity,2003.
[13]  JTG D62—2004,Specifications for Design of Re-inforced Concrete and Prestressed Concrete Highway Bridges and Culverts[S].
[14]  黄国兴,惠荣炎.混凝土的收缩[M].北京:中国铁道出版社,1990.
[15]  周 履,陈永春.收缩徐变[M].北京:中国铁道出版社,1994.
[16]  NEVILLE A M,DILGER W H,BROOKS J J.Creep of Plain and Structural Concrete[M].London:Construction Press,1983.
[17]  雷自学,晏兴威,董三升.混凝土收缩徐变效应对曲线钢-混凝土箱形结合梁桥的影响[J].长安大学学报:自然科学版,2008,28(5):77-80.
[18]  宋 兵,王 湛.高强混凝土自收缩对钢管混凝土轴压力学性能的影响[J].建筑科学与工程学报,2007,24(2):59-62.
[19]  温庆杰,叶见曙.混凝土T梁桥拓宽的长期效应分析[J].交通运输工程学报,2007,7(6):90-95.
[20]  沈蒲生,方 辉,夏心红,等.考虑施工过程和收缩徐变的框架结构简化分析[J].建筑科学与工程学报,2006,23(2):41-45.
[21]  王 骅,薛伟辰.考虑收缩徐变的钢-混凝土组合梁变形计算[J].长安大学学报:自然科学版,2004,24(1):56-60.
[22]  高小建,巴恒静,杨英姿.矿物掺和料对混凝土早期开裂的影响[J].建筑科学与工程学报,2006,23(4):19-23.
[23]  吴小平,宋一凡,贺拴海.公路钢筋混凝土梁桥的长期挠度分析[J].交通运输工程学报,2001,1(4):48-50.
[24]  黄平明,王 达,张永健.PC斜拉式桁架梁桥敏感参数分析[J].建筑科学与工程学报,2007,24(1):59-63.
[25]  胡 狄.预应力混凝土桥梁徐变效应分析[D].长沙:中南大学,2003.
[26]  JTG D62—2004,公路钢筋混凝土和预应力混凝土桥涵设计规范[S].

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133