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...

预应力混凝土T梁在施工阶段的挠度和边界条件分析

, PP. 78-84

Keywords: 桥梁工程,预应力混凝土,静力法,后张法,挠度分析,接触分析,ABAQUS

Full-Text   Cite this paper   Add to My Lib

Abstract:

为了研究预加力时的梁体变形,实施了预应力混凝土T梁桥试验,得到了梁体变形的实测数据;建立了与试验梁对应的有限元模型,并考虑梁体底面存在接触的实际情况,探讨了梁体张拉过程中的摩擦接触问题;通过有限元计算分析了梁体在张拉过程中的挠度变化规律,并提出了计算的基本假设。为了验证计算基本假设的合理性,运用静力法对施工梁体进行受力分析,推导了确定边界约束条件的表达式,并与实桥试验成果以及有限元计算结果相比较。通过理论计算确定的边界约束条件与实测结果基本吻合。在施工阶段,梁的挠度和边界条件主要与预应力钢筋线型、纵断面位置,预加力大小以及构件自重集度有关。通过分析推导,得到了直线配筋和曲线配筋情况下的边界条件。

References

[1]  贾艳敏, 高力. 结构设计原理[M]. 北京: 人民交通出版社, 2004. JIA Yan-min, GAO Li. Principle of Structure Design[M]. Beijing: China Communications Press, 2004.
[2]  PASTRAV M I. Full Scale Test of a Prestressed Concrete T-Beam[J]. Acta Technica Napocensis: Civil Engineering & Architecture,2011, 54(1): 50-59.
[3]  梁智殷, 薛伟辰. 体外预应力 FRP-混凝土组合梁受力性能研究[J]. 公路交通科技, 2013,(12): 241- 244. LIANG Zhi-yin, XUE Wei-chen. Research for Force Capacity of External Prestressed FRP-Concrete Composite Beam[J]. Journal of Highway and Transportation Research and Development,2013,(12): 241-244.
[4]  曾丁, 王国亮, 谢峻, 等. 预应力混凝土梁疲劳预应力损失探索性试验[J]. 公路交通科技, 2012,29(12): 79-83. ZENG Ding, WANG Guo-liang, XIE Jun, et al. Exploratory Experiment of Fatigue Prestress Loss of Prestressed Concrete Beam[J]. Journal of Highway and Transportation Research and Development, 2012,29(12): 79-83.
[5]  庄茁, 张帆, 岑松. ABAQUS非线性有限元分析与实例[M]. 北京: 科学出版社, 2005. ZHUANG Zhuo, ZHANG Fan, CEN Song. Nonlinear Finite Element Analysis and Instance of ABAQUS[M]. Beijing: Science Press, 2005.
[6]  汪召华, 高莲士, 宋文晶. 三维摩擦接触的有限元分析[J]. 清华大学学报:自然科学版, 2002, 42(增1):93-96. WANG Zhao-hua, GAO Lian-shi, SONG Wen-jing. Finite Element Analysis of 3-D Friction-contact Problems[J]. Journal of Tsinghua University: Science and Technology Edition, 2002, 42(S1): 93-96.
[7]  石亦平, 周玉蓉. 有限元分析实例详解[M]. 北京:机械工业出版社, 2006. SHI Yi-ping, ZHOU Yu-rong. Finite Element Analysis Example Explanation[M]. Beijing: China Machine Press, 2006.
[8]  沈新普, 王琛元, 周琳. 一个钢筋混凝土损伤塑性本构模型及工程应用[J]. 工程力学, 2007, 24(9): 122-128. SHEN Xin-pu, WANG Chen-yuan, ZHOU Lin. A Damage Plastic Constitutive Model for Reinforced Concrete and Its Engineering Application[J]. Engineering Mechanics, 2007, 24(9): 122-128.
[9]  聂建国, 王宇航. ABAQUS 中混凝土本构模型用于模拟结构静力行为的比较研究[J]. 工程力学, 2013, 30(4): 59-67. NIE Jian-guo, WANG Yu-hang. Comparison Study of Constitutive Model of Concrete in ABAQUS for Static Analysis of Structures[J]. Engineering Mechanics, 2013,30(4):59-67.
[10]  Dassault Systems Simulia Corp. ABAQUS Documentation[M]. Ver. 6.11. Pawtucket, USA: ABAQUS Inc, 2011. [11] Dassault Systems Simulia Corp. ABAQUS/CAE User's Manual[M]. Ver. 6.8. Pawtucket: ABAQUS, Inc, 2008.
[11]  李平, 王家林. 预应力钢筋混凝土构件有限元模拟方法对比[J]. 重庆交通大学学报:自然科学版, 2010, 29(1): 27-29. LI Ping, WANG Jia-lin. Comparison of FEM Simulation Methods of Prestressed Reinforced Concrete Members[J]. Journal of Chongqing Jiaotong University:Natural Science Edition, 2010, 29(1): 27-29.
[12]  王素裹, 韩小雷, 季静. ABAQUS显式分析方法在钢筋混凝土结构中的应用[J]. 科学技术与工程, 2009,9(16): 4688-4692. WANG Su-guo, HAN Xiao-lei, JI Jing. Application of ABAQUS/Explicit in Reinforced Concrete Structures[J]. Science Technology and Engineering, 2009,9(16):4688-4692.
[13]  杨海旭, 刘晚成. 无粘结预应力筋等效荷载的特性与应用[J]. 哈尔滨工业大学学报, 2005,137(18): 1087-1089. YANG Hai-xu, LIU Wan-cheng. Characteristics and Applications of Equivalent Loads in Unbonded Prestressed Tendons[J]. Journal of Harbin Institute of Technology, 2005,137(18): 1087-1089.
[14]  薛伟辰. 现代预应力结构设计[M]. 北京: 中国建筑工业出版社,2003. XUE Wei-chen. Modern Prestressed Structure Design[M]. Beijing: China Building Industry Press,2003.
[15]  徐伟炜, 吕志涛, 丁汉山. 无粘结智能预应力简支梁的力学性能研究[J]. 工程力学, 2008, 25(7): 142-146. XU Wei-wei, LV Zhi-tao, DING Han-shan. Study on Mechanical Behavior of Unbonded Smart Prestressed Beam[J]. Engineering Mechanics, 2008,25(7): 142-146.
[16]  胡成, 方诗圣, 吴文清. 预应力T梁反拱控制"挠度平衡法"的研究[J]. 合肥工业大学学报:自然科学版,1999, 10(22): 42-47. HU Cheng, FANG Shi-sheng, WU Wen-qing. Research in "Deflection Balancing Method" for the Negative-arch Control of Prestressed Concrete T-beam. Journal of Hefei University of Technology: Natural Science Edition,1999, 10(22): 42-47.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133