氯盐侵蚀后的螺栓球节点在高温后的力学性能研究  

Mechanical Properties of Bolted Sphere Nodes After Chloride Salt Erosion and High-Temperature Exposure

作　　者：盛珺瑶 赵婧睿 韩孟娇 Sheng Jun-yao;Zhao Jing-rui;Han Meng-jiao(School of Mechanics and Civil Engineering,China University of Mining and Technology,Xuzhou 221116,Jiangsu Province,China)

机构地区：[1]中国矿业大学力学与土木工程学院,江苏徐州221116

出　　处：《科学与信息化》2025年第7期122-124,共3页Technology and Information

摘　　要：螺栓球节点在沿海地区的建筑工业中运用广泛,在饱受海洋气候环境中氯离子锈蚀情况下,一旦建筑物遭受火灾,螺栓球节点力学性能将大大下降,严重威胁人财物的安全。本项目利用电化学腐蚀法模拟氯盐环境,并进行高温试验,研究螺栓球节点在锈蚀后、高温后的破坏模式及抗拉承载性能,得出螺栓球节点的抗拉性能随过火温度升高而降低,并在800℃时材料性能易被破坏,稳定性下降,氯盐腐蚀条件则会加剧这种变化。Bolted sphere nodes are widely used in the construction industry in coastal areas.When exposed to marine climates with chloride ion corrosion,the mechanical properties of these nodes can significantly deteriorate if the structure experiences a fire,posing serious threats to life and property.This study employs electrochemical corrosion methods to simulate chloride salt environments and conducts high-temperature tests to investigate the failure modes and tensile loadbearing performance of bolted sphere nodes after corrosion and high-temperature exposure.The results show that the tensile strength of bolted sphere nodes decreases with increasing fire exposure temperature,with material properties becoming particularly vulnerable at 800℃.Chloride salt corrosion further exacerbates this degradation.

关 键 词：螺栓球节点 高温 电化学腐蚀 抗拉性能 

分 类 号：TU392.3[建筑科学—结构工程] TU391