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悬臂施工过程应力监控影响因素分析与修正 被引量:4

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摘要 在悬臂施工阶段,一般结构应力监控分析多考虑混凝土的收缩徐变效应,而不考虑温度效应,虽然不能避开温度的位移效应影响,但还是可以通过选择测量时间,减小温度的应力效应影响。然而,在施工现场对振弦式传感器的长期实测过程中,通过比较实测数据与理论数据反映出部分监控测点处实测微应变值经常发生显示读数不稳定、有跳变甚至长期变化无明显规律的情况。通过结合工程实例,依据MIDAS/Civil有限元程序模拟计算与结构状态现场实测对比结果,对应力监控数据采集过程中出现的实际问题进行定性地分析修正,为悬臂施工预应力混凝土桥梁结构应力监测控制过程提供参考。
出处 《公路》 北大核心 2013年第8期6-11,共6页 Highway
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  • 1Glisic B, lnaudi D. Monitoring of early and very early age deformation of concrete using fiber optic sensors [C]//F6d6tation Internationale du Beon. Proceedings of the Second fib International Congress. Naples, Italy, June, on conference CD, 1D 17-26, 2006.
  • 2O'Moore, Liza, Baweja, Daksh and Dux, Peter. Investigation of Early Age Tensile Stresses, Shrinkage strains in pavements and standard drying shrinkage tests. [C]// Concrete Institute of Australia. 22nd Biennial Conference, Concrete 05-Issues Opportunities Innovations. Melbourne, Australia, Concrete Institute of Australia, October, 2005.
  • 3Jeong-Hee Nam. Early-age behavior of CRCP and its implications for long-term performance [D]. Austin, America, The University of Texas at Austin, 2005.
  • 4GANESH, PRAKASH. Transverse cracking of high performance concrete bridge decks [D]. Cincinnati, America, University of Cincinnati, 2006.
  • 5Bjφntegaard φ. Autogenous and thermal deformations [C]// Bentur A. Early Age Cracking in Cementitious Systems-Report of RILEM Technical Committee 181-EAS-Early Age Shrinkage Induced Stresses and Cracking in Cementitious Systems. RILEM Publications SARL, 2003: 65-88.
  • 6Jeffrey Keith Johnson. Concrete bridge deck behavior under thermal loads [D]. Montana, America, Montana State University, July, 2005.
  • 7Daniel Cusson, Ted Hoogeveen. Measuring early-age coefficient of thermal expansion in High-Performance Concrete [C]// Jensen O M, Lura P, Kovler K. International RILEM Conference on Volume Changes of Hardening Concrete: Testing and Mitigation. Lyngby, Denmark, 2006.
  • 8D'Ambrosia M D, Lange D A, Grasley Z C. Measurement and modeling of concrete tensile creep and shrinkage at early age [M]. ACI Special Publication Volume: 220, March, 2004: 99- 122.
  • 9Aufleger M, Conrad M, Strobl Th, Husein Malkawi A I, Duan Y. Distributed Fibre Optic Temperature Measurements in RCC-Dams in Jordan and China [DB/OL]. http://www.dtkinfo.de/german_research/index. cgi/page/article/article_id/24. 2008-4-22.
  • 10史家钧,同济大学学报,1997年,25卷,增刊,71页

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