上海交通大学学报

上海交通大学学报（自然版） ›› 2011, Vol. 45 ›› Issue (05): 691-695.

• 建筑科学 • 上一篇    下一篇

强地震作用后养护期混凝土力学性能模拟

王颖轶, 李科, 吴浩宁, 黄醒春   

  1. (上海交通大学 土木工程系， 上海 200240)
  • 收稿日期:2010-10-01 出版日期:2011-05-30 发布日期:2011-05-30

Simulation on Properties of Curing Concrete After Strong Earthquake Effect

 WANG  Ying-Yi, LI  Ke, WU  Hao-Ning, HUANG  Xing-Chun   

  1. (Department of Civil Engineering, Shanghai Jiaotong University, Shanghai 200240, China)
  • Received:2010-10-01 Online:2011-05-30 Published:2011-05-30

摘要： 通过模拟试验研究强地震作用后养护期混凝土力学性能的变化情况，以及早强剂对养护期混凝土抗震性能的影响.结果表明：养护初期，混凝土的应力与应变呈线性变化关系，随着荷载增加而逐渐变为非线性关系；地震作用对受振时龄期短于一定时间的混凝土的抗压强度影响显著；早强剂含量越高，则混凝土的硬化速度越快.

关键词: 地震, 养护期混凝土, 力学性能, 模拟试验

Abstract:  Curing concrete’s mechanical properties under the strong earthquake action and the influence of early strength agent on the seismic resistance of curing concrete were researched through simulating test. The results show that: ① the stressstrain relationship is linear at initial stage, then becomes nonlinear with the increasing load; ② the compressive strength of seismic vibrated concrete sample is significantly lower than that of common sample, so seismic vibration has a significant effect to concrete sample when curing time is less than certain time; ③ the early strength agent content has a clear effect on concrete in gelled state, the higher the content of early strength agent is, the faster the concrete hardens.

Key words: earthquake, curing concrete, mechanical properties, simulating test

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