{"title":"混合火灾模拟的进展 - 一种用于实时实施的新型刚度更新方法","authors":"","doi":"10.1016/j.jcsr.2024.108974","DOIUrl":null,"url":null,"abstract":"<div><p>In this paper, we present a novel computational approach for stiffness-update of fire-exposed structural member to rigorously study the thermo-mechanical coupling of a real-time hybrid fire simulation. This approach realistically considers the stiffness and strength degradation of the fire-exposed member at each instance of continuous fire evolution and its effect on the global response of the structure. A newly independent computational and experimental framework for hybrid fire procedure is implemented in this study, which applies a well-suited benchmark structure consisting of high strength steel S690QL. Various case studies with different influencing aspects such as different load ratios, heating rates and computational control parameters are presented to investigate most important temperature- and rate-induced numerical and experimental challenges. In addition, different limitations of HFS approaches in state-of-the-art studies are addressed and enhanced by the new proposed approach. This study marks a significant advancement in real-time hybrid fire simulation and proves the competence of presented methodology for rigorous and robust assessment of the fire performance of structural systems, leading to more realistic fire design of structures.</p></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":null,"pages":null},"PeriodicalIF":4.0000,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0143974X24005248/pdfft?md5=a24a3b2f616dcb5a51362109b66a48c9&pid=1-s2.0-S0143974X24005248-main.pdf","citationCount":"0","resultStr":"{\"title\":\"Advances in hybrid fire simulation – A novel stiffness-update method for real-time implementation\",\"authors\":\"\",\"doi\":\"10.1016/j.jcsr.2024.108974\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>In this paper, we present a novel computational approach for stiffness-update of fire-exposed structural member to rigorously study the thermo-mechanical coupling of a real-time hybrid fire simulation. This approach realistically considers the stiffness and strength degradation of the fire-exposed member at each instance of continuous fire evolution and its effect on the global response of the structure. A newly independent computational and experimental framework for hybrid fire procedure is implemented in this study, which applies a well-suited benchmark structure consisting of high strength steel S690QL. Various case studies with different influencing aspects such as different load ratios, heating rates and computational control parameters are presented to investigate most important temperature- and rate-induced numerical and experimental challenges. In addition, different limitations of HFS approaches in state-of-the-art studies are addressed and enhanced by the new proposed approach. This study marks a significant advancement in real-time hybrid fire simulation and proves the competence of presented methodology for rigorous and robust assessment of the fire performance of structural systems, leading to more realistic fire design of structures.</p></div>\",\"PeriodicalId\":15557,\"journal\":{\"name\":\"Journal of Constructional Steel Research\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":4.0000,\"publicationDate\":\"2024-09-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.sciencedirect.com/science/article/pii/S0143974X24005248/pdfft?md5=a24a3b2f616dcb5a51362109b66a48c9&pid=1-s2.0-S0143974X24005248-main.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Constructional Steel Research\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0143974X24005248\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CONSTRUCTION & BUILDING TECHNOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Constructional Steel Research","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0143974X24005248","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CONSTRUCTION & BUILDING TECHNOLOGY","Score":null,"Total":0}
Advances in hybrid fire simulation – A novel stiffness-update method for real-time implementation
In this paper, we present a novel computational approach for stiffness-update of fire-exposed structural member to rigorously study the thermo-mechanical coupling of a real-time hybrid fire simulation. This approach realistically considers the stiffness and strength degradation of the fire-exposed member at each instance of continuous fire evolution and its effect on the global response of the structure. A newly independent computational and experimental framework for hybrid fire procedure is implemented in this study, which applies a well-suited benchmark structure consisting of high strength steel S690QL. Various case studies with different influencing aspects such as different load ratios, heating rates and computational control parameters are presented to investigate most important temperature- and rate-induced numerical and experimental challenges. In addition, different limitations of HFS approaches in state-of-the-art studies are addressed and enhanced by the new proposed approach. This study marks a significant advancement in real-time hybrid fire simulation and proves the competence of presented methodology for rigorous and robust assessment of the fire performance of structural systems, leading to more realistic fire design of structures.
期刊介绍:
The Journal of Constructional Steel Research provides an international forum for the presentation and discussion of the latest developments in structural steel research and their applications. It is aimed not only at researchers but also at those likely to be most affected by research results, i.e. designers and fabricators. Original papers of a high standard dealing with all aspects of steel research including theoretical and experimental research on elements, assemblages, connection and material properties are considered for publication.