钢筋混凝土高温锈蚀耦合粘结性能试验研究
Experimental Study on Coupling Bond Properties of Corroded Reinforced Concrete at High Temperature
刘琼 1臧健1
作者信息
- 1. 诸城市建筑业发展中心,诸城 262200
- 折叠
摘要
为深入探究高温锈蚀耦合作用下粘结性能的变化规律,对48个中心拉拔试件进行高温下拉拔试验.结果表明:高温下粘结性能随着温度等级增大呈现减小趋势,随锈蚀率增大而逐渐降低.温度700 ℃且锈蚀率为6％时,试件粘结强度降低了 53.8％.最后,基于试验数据建立了高温-锈蚀耦合作用下的粘结滑移本构方程,得到了服役结构遭受火灾时的粘结性能评估规律.
Abstract
In order to investigate the change of bonding properties under the coupling effect of high temperature cor-rosion,48 central drawing specimens were tested under high temperature.The test results show that the bonding prop-erty decreases with the increase of temperature grade,and decreases with the increase of corrosion rate.When the tem-perature is 700 ℃ and the corrosion rate is 6％,the bond strength of the specimen decreases by 53.8％.Finally,based on the test data,the bonding slip constitutive equation under the coupling action of high-temperature corrosion is estab-lished,and the evaluation law of the bonding performance of the service structure under fire is obtained.
关键词
高温作用/钢筋锈蚀/粘结滑移/本构模型Key words
high temperature action/corrosion of steel bars/bond slip/constitutive model引用本文复制引用
出版年
2024
NETL
NSTL
万方数据