近断层地震作用下腐蚀环境中框架结构易损性分析

金属矿山 ›› 2025, Vol. 54 ›› Issue (7): 195-206.

近断层地震作用下腐蚀环境中框架结构易损性分析

杨福剑^1,2,3 　赵浩楠² 　马天畅⁴ 　易　刚³ 　纪建华³ 　李小双²

1. 天津大学滨海土木工程结构与安全教育部重点实验室,天津 300072;2. 常州大学城市建设学院,江苏常州 213164; 3. 巨匠建设集团股份有限公司,浙江嘉兴 314599;4. 沈阳工业大学建筑与土木工程学院,辽宁沈阳 110870

出版日期:2025-07-15 发布日期:2025-08-13
作者简介:杨福剑(1988—),男,讲师,博士,硕士研究生导师。
基金资助:
国家自然科学基金项目(编号:52208460,42277154,42477142);山东省自然科学基金项目(编号:ZR2022ME188);常州市领军型创新人才引进培育项目(编号:CQ20220100);常州大学人才引进资助项目(编号:ZMF21020374,ZMF24020037)。

Seismic Vulnerability Analysis of Frame Structure in Corrosive Environments under Near-fault Ground Motions

YANG Fujian ^1,2,3 　 ZHAO Haonan² 　 MA Tianchang ⁴ 　 YI Gang³ 　 JI Jianhua ³ 　 LI Xiaoshuang ²

1. Key Laboratory of Coastal Civil Engineering Structure and Safety,Ministry of Education,Tianjin University,Tianjin 300072,China; 2. School of Urban Construction,Changzhou University,Changzhou 213164,China;3. Jujiang Construction Group Co. ,Ltd. , Jiaxing 314599,China;4. School of Architecture & Civil Engineering,Shenyang University of Technology,Shenyang 110870,China

Online:2025-07-15 Published:2025-08-13

摘要/Abstract

摘要： 矿山开挖过程中释放的粉尘、湿气、化学物质以及矿石中伴随的腐蚀性介质(如硫化物)共同作用形成了复杂的腐蚀环境,对矿山工程附近的建筑结构具有不利影响。为量化材料腐蚀与近断层地震动作用对钢筋混凝土 (RC)结构抗震性能的影响,以一栋位于腐蚀环境中的 6 层 RC 框架结构为研究对象,探讨地震与环境腐蚀共同作用下结构抗震性能的变化。基于数值模拟与概率分析方法,引入 5 种腐蚀工况(0%、5%、10%、15%、20%)开展地震易损性评估,并选取层间位移角作为结构损伤指标,量化分析了不同腐蚀程度和地震强度下的结构性能退化机理。研究结果表明:近断层地震作用下结构的失效概率高于远场地震,高腐蚀率会导致在相同峰值加速度(Peak Ground Acce leration,PGA)条件下失效概率显著增加;远场地震的累积损伤效应更为显著,而腐蚀对易损性的影响在近断层和远场地震中表现差异较小。矿山环境对建筑结构易损性具有多方面影响,其中化学腐蚀的直接作用尤为显著。因此,在结构设计与管理中需充分考虑腐蚀环境的影响,以保障建筑结构的安全性与耐久性。

关键词: 地震易损性　 RC 框架结构　近断层地震　材料腐蚀　数值模拟　矿山环境

Abstract: The complex corrosive environment created by dust, moisture, chemical substances, and corrosive media (e. g. ,sulfides) released during mining excavation poses significant adverse effects on building structures near mining projects. To quantify the impact of material corrosion and near-fault ground motion on the seismic performance of reinforced concrete (RC) structures,this study investigates a six-story RC frame structure situated in a corrosive environment. The seismic performance of the structure under the combined effects of earthquake loading and environmental corrosion is explored. Based on numerical simulations and probabilistic analysis,five corrosion scenarios (0%,5%,10%,15%,and 20%) are introduced for seismic fragility assessment. Inter-story drift ratio is selected as the structural damage index to quantify the performance degradation mechanism under different levels of corrosion and seismic intensities. The results indicate that near-fault earthquakes result in higher structural failure probabilities compared to far-field earthquakes. Additionally,higher corrosion rates significantly increase the failure probability under the same peak ground acceleration (PGA). While far-field earthquakes exhibit more pronounced cumulative damage effects,the influence of corrosion on fragility shows relatively minor differences between nearfault and far-field conditions. The mining environment has multifaceted impacts on the fragility of building structures,with chemical corrosion playing a particularly prominent role. Therefore,the effects of corrosive environments should be fully considered in structural design and management to ensure the safety and durability of building structures.

Key words: seismic vulnerability,RC frame structure,near-fault ground motion,material corrosion,numerical simulation, mine environment

中图分类号:

TD26
TU37

杨福剑, 　赵浩楠　马天畅　易　刚　纪建华　李小双. 近断层地震作用下腐蚀环境中框架结构易损性分析[J]. 金属矿山, 2025, 54(7): 195-206.

YANG Fujian , 　 ZHAO Haonan 　 MA Tianchang 　 YI Gang 　 JI Jianhua 　 LI Xiaoshuang . Seismic Vulnerability Analysis of Frame Structure in Corrosive Environments under Near-fault Ground Motions [J]. Metal Mine, 2025, 54(7): 195-206.

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