多降雨环境下锈蚀钢筋混凝土柱装配节点抗震性监测

doi:10.13229/j.cnki.jdxbgxb.20230989

摘要/Abstract

摘要：

为保障建筑安全，提出了多降雨环境下锈蚀钢筋混凝土柱装配节点抗震性监测方法。首先，分析了多降雨环境造成钢筋混凝土柱锈蚀的原因，并计算了雨水锈蚀造成的钢筋混凝土柱劣化程度。然后，为明确雨水锈蚀对钢筋混凝土柱抗震性造成的影响，参考建筑行业钢筋混凝土结构设计标准构建了4个不同锈蚀程度的钢筋混凝土试件，并将4个试件放置于拟静力试验环境中，通过不同程度载荷的加载，模拟不同震动环境。最后，结合滞回曲线、骨架曲线以及层间位移角的测算，实现了相同震动环境下不同试件的抗震性表现分析。

关键词: 锈蚀劣化, 拟静力试验, 载荷加载, 滞回曲线, 骨架曲线

Abstract:

In order to ensure the safety of the building， a method for monitoring the seismic resistance of the assembly joints of corroded reinforced concrete column under heavy rainfall was proposed. Firstly， the reasons for the corrosion of reinforced concrete columns caused by heavy rainfall environment were analyzed， and the deterioration degree of reinforced concrete columns caused by rain rust was calculated.Then， in order to clarify the influence of rain rust on the seismic resistance of reinforced concrete columns， four reinforced concrete specimens with different degrees of corrosion were constructed with reference to the design standards for reinforced concrete structures in the construction industry. The four specimens were placed in a pseudo-static experimental environment， and different vibration environments were simulated by loading different degrees of loads. Finally， by combining the calculation of hysteresis curves， skeleton curves， and inter story displacement angles， the seismic performance analysis of different specimens under the same vibration environment was achieved.

Key words: rust deterioration, quasi static experiment, load loading, hysteresis curve, skeleton curve

中图分类号:

TU352.11

孙敏,朱远恒,高鹏真,李振东,方有珍. 多降雨环境下锈蚀钢筋混凝土柱装配节点抗震性监测[J]. 吉林大学学报(工学版), 2024, 54(12): 3545-3551.

Min SUN,Yuan-heng ZHU,Peng-zhen GAO,Zhen-dong LI,You-zhen FANG. Seismic resistance monitoring of assembly joints of corroded reinforced concrete columns under heavy rainfall environment[J]. Journal of Jilin University(Engineering and Technology Edition), 2024, 54(12): 3545-3551.

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钢材类别	钢材厚度/mm	弹性模拟/GPa	伸长率/%	屈服强度/MPa	极限强度/MPa
HRB400	8	200	15.3	413.6	652.3
HRB400	10	200	17.3	426.0	580.6
HRB400	12	200	21.6	435.5	576.1
HRB400	14	200	23.7	469.5	570.2
HRB400	16	200	24.8	426.3	618.5
HRB400	22	200	20.3	429.9	581.9
HRB400	25	200	19.4	455.1	612.4

层间位移角	阻尼系数计算结果
层间位移角	RCJ1	RCJ2	RCJ3
15^-1	0.522	0.463	0.392
20^-1	0.413	0.351	0.303
25^-1	0.361	0.251	0.241
30^-1	0.303	0.207	0.193
35^-1	0.254	0.193	0.186
40^-1	0.236	0.183	0.152
45^-1	0.197	0.123	0.115
50^-1	0.175	0.103	0.096
55^-1	0.136	0.075	0.048

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