工程力学 ›› 2019, Vol. 36 ›› Issue (4): 125-134.doi: 10.6052/j.issn.1000-4750.2018.01.0085

• 土木工程学科 • 上一篇    下一篇

近海大气环境下锈蚀RC框架梁恢复力模型研究

曹琛, 郑山锁, 胡卫兵, 赵彦堂, 郑捷, 周炎   

  1. 西安建筑科技大学土木工程学院, 陕西, 西安 710055
  • 收稿日期:2018-01-29 修回日期:2018-05-23 出版日期:2019-04-25 发布日期:2019-04-15
  • 通讯作者: 胡卫兵(1966-),男,湖北人,教授,博士,博导,主要从事高层和大跨度结构的抗风阵及抗震研究(E-mail:wbh8008@sohu.com). E-mail:wbh8008@sohu.com
  • 作者简介:曹琛(1986-),女,陕西户县人,博士生,主要从事结构工程与工程抗震研究(Email:caochenlxx@163.com);郑山锁(1960-),男,陕西渭南人,教授,博士后,博导,主要从事结构工程与工程抗震研究(E-mail:zhengshansuo@263.net);赵彦堂(1988-),男,山东人,硕士,主要从事结构工程抗震研究(E-mail:sdlszyt@126.com);郑捷(1988-),女,陕西渭南人,硕士,主要从事建筑结构优化设计研究(E-mail:julie1314fl@126.com);周炎(1993-),男,湖北人,博士生,主要从事结构工程与工程抗震研究(E-mail:770572016@qq.com).
  • 基金资助:
    国家科技支撑计划项目(2013BAJ08B03);国家自然科学基金项目(51678475);陕西省重点研发计划项目(2017ZDXM-SF-093);陕西省教育厅产业化项目(18JC020)

A RESTORING FORCE MODEL OF CORRODED REINFORCED CONCRETE FRAME BEAMS IN OFFSHORE ATMOSPHERIC ENVIRONMENT

CAO Chen, ZHENG Shan-suo, HU Wei-bing, ZHAO Yan-tang, ZHENG Jie, ZHOU Yan   

  1. Collage of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an, Shaanxi 710055, China
  • Received:2018-01-29 Revised:2018-05-23 Online:2019-04-25 Published:2019-04-15

摘要: 为了研究近海大气环境下锈蚀RC框架梁的抗震性能,对8榀经受不同盐雾腐蚀循环作用的RC框架梁进行了低周反复加载试验,分析RC框架梁的滞回特性。基于试验结果,得到了带有负刚度段的三折线骨架曲线,并根据完好构件恢复力模型特征参数,得到了考虑钢筋锈蚀率和配箍率的锈蚀RC框架梁骨架曲线特征点计算公式。采用回归分析法,得到基于滞回耗能的循环退化指数,通过循环退化指数建立可综合考虑构件的捏拢效应、强度退化、卸载刚度退化、硬化刚度退化和再加载刚度加速退化的锈蚀RC框架梁恢复力模型。研究表明:随着钢筋锈蚀程度的增加,锈蚀RC框架梁的抗震性能劣化较明显,滞回耗能逐渐降低;配箍率对锈蚀RC框架梁恢复力特性的影响与未锈蚀RC框架梁相似;所建立的恢复力模型能够较好的描述锈蚀RC框架梁的滞回特性,可为该类结构的弹塑性时程分析提供理论参考。

关键词: 近海大气环境, RC框架梁, 锈蚀, 滞回特性, 恢复力模型

Abstract: To study the seismic behavior of corroded Reinforced Concrete (RC) frame beams in offshore atmosphere, the hysteretic behavior of 8 RC frame beams were investigated experimentally, which have been damaged by the salt spray corrosion cycles under low cyclic reversed loading. Based on the test results, a trilinear skeleton curve model with negative stiffness of frame beams was established. According to the characteristic parameters of the intact member's restoring force model, the formula of the characteristic points of the skeleton curve of RC frame beams with corrosion was obtained, which considered the corrosion rate and stirrup ratio. The cyclic degradation indexes of RC frame beams based on hysteresis energy dissipation was obtained through regressive analysis. Subsequently, the restoring force model of corroded RC frame beams was established, which considered the pinch-in effect, strength degradation, unloading stiffness degradation, hardening stiffness degradation and reloading stiffness accelerates degradation. The results show that the seismic performance of RC frame beams deteriorates obviously with the increase of corrosion degree, and the hysteretic energy consumption decreases gradually. The influence of stirrup ratio on the restoring force of RC frame beams is similar to the un-corroded frame beams. The restoring force model can describe the hysteretic behavior of corroded RC frame beams well. The study results will shed light on the theoretical research about the elastic-plastic dynamic analysis of RC structures.

Key words: coastal atmosphere, RC frame beam, corrosion, hysteretic behavior, restoring force model

中图分类号: 

  • TU375
[1] 史庆轩, 牛荻涛, 颜桂云. 反复荷载作用下锈蚀混凝土压弯构件恢复力性能的试验研究[J]. 地震工程与工程振动, 2000, 20(4):45-50. Shi Qingxuan, Niu Ditao, Yan Guiyun. Experimental research on hysteretic characteristics of corroded RC members with flexural and compressive axial loads under repeated horizontal loading[J]. Earthquake Engineering And Engineering Vibration, 2000, 20(4):45-50. (in Chinese)
[2] 闫西康, 魏志敏, 丁其元. 盐雾腐蚀混凝土后对其抗剪性能的影响分析[J]. 混凝土, 2011(3):21-24. Yan Xikang, Wei Zhimin, Ding Qiyuan. Analysis of the influence of salt fog corrosion concrete shear performance[J]. Concrete, 2011(3):21-24. (in Chinese)
[3] 金伟良, 赵羽习. 锈蚀钢筋混凝土梁抗弯强度的试验研究[J]. 工业建筑. 2001, 31(5):9-11. Jin Weiliang, Zhao Yuxi. Test study on bending strength of corroded reinforced concrete beams[J]. Industrial Construction, 2001, 31(5):9-11. (in Chinese)
[4] 李士彬, 张鑫, 贾留东, 等. 箍筋锈蚀钢筋混凝土梁的抗剪承载力分析[J]. 工程力学, 2011, 28:60-63. Li Shibin, Zhang Xin, Jia Liudong, et al. Analysis for shear capacity of reinforced concrete beams with corrosion stirrups[J]. Engineering Mechanics, 2011, 28:60-63. (in Chinese)
[5] 郑山锁, 秦卿, 杨威, 等. 近海大气环境下低矮RC剪力墙抗震性能试验[J]. 哈尔滨工业大学学报, 2015, 47(12):64-69 Zheng Shansuo, Qin Qing, Yang Wei, et al. Experimental research on theseismic behaviors of squat RC shear walls under offshore atmospheric environment[J]. Journal of Harbin Institute of Technology, 2015, 47(12):64-69. (in Chinese)
[6] Clough RW. Effect of stiffness degradation on earthquake ductility requirements[D]. California:University of California, 1966.
[7] Ramberg W, Osgood WR. Description of steel strain curve by three parameters[R]. Technical Note 902, National Advisory Committee for Aeronautics, July, 1943.
[8] 闫长旺, 杨勇, 贾金青, 等. 钢骨超高强混凝土框架节点恢复力模型[J]. 工程力学, 2015, 32(12):154-160. Yan Changwang, Yang Yong, Jia Jinqing, et al. Study on restoring force model of steel reinforced ultra high strength concrete frame joints[J]. Engineering Mechanics, 2015, 32(12):154-160. (in Chinese)
[9] Bouc R. Forced vibration of mechanical systems with hysteresis[C]//Proceedings of the 4th International Conference on Nonlinear Oscillations, Prague, Czecho-slovakia, 1967.
[10] Wen YK. Method for random vibration of hysteretic systems[J]. ASCE Journal of Engineering Mechanics 1976, 102(2):249-263.
[11] GB 50011-2010, 建筑抗震设计规范[S]. 北京:中国建筑工业出版社, 2010. GB 50011-2010, Code for seismic design of building[S]. Beijing:China Architecture & Building Press, 2010. (in Chinese)
[12] JGJ 101-1996, 建筑抗震试验方法规程[S]. 北京:中国建筑工业出版社, 1996. JGJ 101-1996, Specificating of testing methods for earthquake resistant building[S]. Beijing:China Architecture & Building Press, 1996. (in Chinese)
[13] 赵彦堂. 人工气候环境下锈蚀RC框架梁抗震性能试验研究[D]. 西安:西安建筑科技大学, 2014. Zhao Yantang. Experimental study on seismic performance of corroded RC frame beam under artificial climate[D]. Xi'an:Xi'an University of Architecture and Technology, 2014. (in Chinese)
[14] 潘士劼, 许哲明. 框架结构的非线性地震反应分析[J]. 同济大学学报, 1980(2):43-63. Pan Shijie, Xu Zheming. Nonlinear earthquake response analysis of rigid frames[J]. Journal of Tongji University, 1980(2):43-63. (in Chinese)
[15] Rahnama M, Krawinkler H. Effects of soft soil and hysteresis model on seismic demands[D]. John A. Blume Earthquake Engineering Center Report No. 108. Department of CEE, Stanford University, 1993.
[16] Medina R A, Krawinkler H. Hysteretic models that incorporate strength and stiffness deterioration[J]. Earthquake Engineering & Structural Dynamics, 2005, 34(12):1489-1511.
[17] 李磊, 郑山锁, 王斌, 等. 型钢高强混凝土框架的循环退化效应[J]. 工程力学, 2010, 27(11):81-88. Li Lei, Zheng Shansuo, Wang Bin, et al. Cyclic deterioration effect of the steel reinforced high performance concrete frames[J]. Engineering Mechanics, 2010, 27(11):81-88. (in Chinese)
[1] 杨慧, 何浩祥, 闫维明. 锈蚀和疲劳耦合作用下梁桥时变承载力评估[J]. 工程力学, 2019, 36(2): 165-176.
[2] 徐强, 郑山锁, 商校瑀. 近海大气环境作用下钢框架节点时变地震损伤研究[J]. 工程力学, 2019, 36(1): 61-69.
[3] 陈云, 陈超, 蒋欢军, 万志威, 刘涛. O型钢板-高阻尼黏弹性复合型消能器的力学性能试验与分析[J]. 工程力学, 2019, 36(1): 119-128.
[4] 张建仁, 肖林发, 彭建新, 唐皇. U型箍加固锈蚀RC梁的抗弯性能试验研究及数值分析[J]. 工程力学, 2018, 35(8): 111-121.
[5] 徐龙河, 王坤鹏, 谢行思, 李忠献. 具有复位功能的阻尼耗能支撑滞回模型与抗震性能研究[J]. 工程力学, 2018, 35(7): 39-46.
[6] 郑山锁, 张晓辉, 黄威曾, 赵旭冉. 近海大气环境下锈蚀平面钢框架抗震性能试验研究及有限元分析[J]. 工程力学, 2018, 35(7): 62-73,82.
[7] 崔瑶, 李浩, 刘浩, 王晶秋, 唐贞云. 外露式钢柱脚恢复力特性分析[J]. 工程力学, 2018, 35(7): 232-242.
[8] 韩强, 贾振雷, 王晓强, 黄超. 内嵌碟簧型自复位防屈曲支撑性能试验及其恢复力模型研究[J]. 工程力学, 2018, 35(6): 144-150,190.
[9] 郑山锁, 刘巍, 左河山, 董立国, 李强强. 近海大气环境下考虑锈蚀的不同剪跨比RC框架梁抗震性能试验[J]. 工程力学, 2018, 35(4): 78-86.
[10] 王磊, 戴理朝, 易驹, 张旭辉, 张建仁. 预应力钢绞线锈胀及混凝土开裂预测[J]. 工程力学, 2018, 35(12): 54-62.
[11] 徐善华, 张宗星, 李柔, 位龙虎. 锈蚀钢框架地震易损性评定方法[J]. 工程力学, 2018, 35(12): 107-115.
[12] 郑山锁, 张晓辉, 赵旭冉, 刘毅. 近海大气环境下锈蚀钢框架梁抗震性能试验及恢复力模型研究[J]. 工程力学, 2018, 35(12): 98-106,115.
[13] 余波, 陈冰. 锈蚀钢筋混凝土梁抗剪承载力计算的概率模型[J]. 工程力学, 2018, 35(11): 115-124.
[14] 陈俊, 张白, 杨鸥, 蒋恩浩. 微锈蚀钢筋混凝土高温后粘结锚固性能试验研究[J]. 工程力学, 2018, 35(10): 92-100.
[15] 郑山锁, 刘巍, 秦卿, 张传超, 董立国, 李强强. 不同加载制度下RC框架梁抗震性能试验研究[J]. 工程力学, 2018, 35(1): 109-117.
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
No Suggested Reading articles found!
X

近日,本刊多次接到来电,称有不法网站冒充《工程力学》杂志官网,并向投稿人收取高额费用。在此,我们郑重申明:

1.《工程力学》官方网站是本刊唯一的投稿渠道(原网站已停用),《工程力学》所有刊载论文必须经本刊官方网站的在线投稿审稿系统完成评审。我们不接受邮件投稿,也不通过任何中介或编辑收费组稿。

2.《工程力学》在稿件符合投稿条件并接收后会发出接收通知,请作者在接到版面费或审稿费通知时,仔细检查收款人是否为“《工程力学》杂志社”,千万不要汇款给任何的个人账号。请广大读者、作者相互转告,广为宣传!如有疑问,请来电咨询:010-62788648。

感谢大家多年来对《工程力学》的支持与厚爱,欢迎继续关注我们!

《工程力学》杂志社

2018年11月15日