首页 | 本学科首页   官方微博 | 高级检索  
     检索      

高强混凝土徐变力学实验研究
引用本文:张运涛,孟少平,潘钻峰.高强混凝土徐变力学实验研究[J].实验力学,2009,24(6):592-597.
作者姓名:张运涛  孟少平  潘钻峰
作者单位:1. 东南大学,混凝土及预应力混凝土结构教育部重点实验室,江苏南京,210096;安徽建筑工业学院,安徽合肥,230022
2. 东南大学,混凝土及预应力混凝土结构教育部重点实验室,江苏南京,210096
基金项目:江苏省交通科学研究计划项目 
摘    要:为掌握苏通大桥连续刚构桥所用C60高强混凝土的徐变性能,开展了自然环境下配筋高强混凝土的徐变力学试验.为获得徐变试验所需75t的加载力,设计并制造出95t的徐变加载装置,解决了混凝土徐变试验大吨位加载的问题.针对应变测试过程中温度变化对应变测试的影响作了深入的探讨,提出了应变计温度影响的修正方法.通过试验结果与现行桥规JTG D62-2004的比较得出:配筋高强混凝土徐变系数远小于规范取值,且在170天后徐变系数有收敛的特征.试验结果说明,实桥所用C60高强混凝土的徐变可以满足桥梁对混凝土耐久性的要求.

关 键 词:徐变试验  高强混凝土  徐变加载装置  温度影响修正

Experimental Study of Creep Mechanics for High Strength Concrete
ZHANG Yun-tao,MENG Shao-ping and PAN Zuan-feng.Experimental Study of Creep Mechanics for High Strength Concrete[J].Journal of Experimental Mechanics,2009,24(6):592-597.
Authors:ZHANG Yun-tao  MENG Shao-ping and PAN Zuan-feng
Institution:Key Laboratory of RC & PC Structures of Ministry of Education, Southeast University, Nanjing 210096, China; Anhui Institute of Architecture & Industry, Hefei 230022, China;Key Laboratory of RC & PC Structures of Ministry of Education, Southeast University, Nanjing 210096, China;Key Laboratory of RC & PC Structures of Ministry of Education, Southeast University, Nanjing 210096, China
Abstract:In order to obtain creep properties of high strength concrete (HSC) used in Sutong continuous rigid-frame bridge, creep experiment of reinforced high strength concrete was carried out under natural environment. To obtain 75-ton loading force for creep experiment, a 95-ton creep-loading device was designed and manufactured, which solve the large-tonnage loading problem in concrete creep experiment. The temperature effect on concrete strain gauge was analyzed and the temperature correction method of strain gauge was also presented. The measured values of creep coefficient are far less than that of current bridge code (JTG D62-2004), and it has the characteristics of convergence after 170 days. Results show that the creep of HSC C60 used in the real bridge can satisfy the requirements for concrete durability.
Keywords:creep experiment  high strength concrete  creep-loading device  correction of temperature effect
本文献已被 万方数据 等数据库收录!
点击此处可从《实验力学》浏览原始摘要信息
点击此处可从《实验力学》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号