Experimental Study on Mechanical Behavior of High Strength Steel Flange-welded Web-bolted Connections Under Fire Condition

doi:10.11908/j.issn.0253-374x.21357

Home > Archive>Volume 50, Issue 10, 2022 >1432-1442. DOI:10.11908/j.issn.0253-374x.21357

Experimental Study on Mechanical Behavior of High Strength Steel Flange-welded Web-bolted Connections Under Fire Condition
DOI:
                        10.11908/j.issn.0253-374x.21357
                    
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                        QIANG Xuhong1QIANG Xuhong
College of Civil Engineering， Tongji University， Shanghai 200092， China
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SHU Yue1SHU Yue
College of Civil Engineering， Tongji University， Shanghai 200092， China
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JIANG Xu1JIANG Xu
College of Civil Engineering， Tongji University， Shanghai 200092， China
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WANG Fei2WANG Fei
China State Construction Overseas Development Co.，Ltd.， Shanghai 200126，China
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Affiliation:1.College of Civil Engineering， Tongji University， Shanghai 200092， China;2.China State Construction Overseas Development Co.，Ltd.， Shanghai 200126，China
Clc Number:TU392
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Abstract:

In this paper， through the full-scale experiment of high strength steel flange-welded web-bolted connections， the mechanical properties of Q690 and Q960 connections at ambient temperature and elevated temperatures are studied. The theoretical values of bearing capacity recommended by the existing American， European and Chinese codes are compared with the experimental values to verify the effectiveness of the codes for the high strength steel flange-welded web-bolted connections. The recommendations for the design of the high strength steel flange-welded web-bolted connections are given. Finally， the difference of fire resistance between the high strength steel endplate connections and the high strength steel flange-welded web-bolted connections is analyzed. It is shown that the high strength steel flange-welded web-bolted connections are better than the high strength steel endplate connections in terms of fire resistance.

Key words:high strength steel;in fire;flange-welded web-bolted connections;mechanical behavior;experimental study

Reference

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QIANG Xuhong, SHU Yue, JIANG Xu, WANG Fei. Experimental Study on Mechanical Behavior of High Strength Steel Flange-welded Web-bolted Connections Under Fire Condition[J].同济大学学报(自然科学版),2022,50(10):1432~1442

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Received:August 05,2021
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Online: November 03,2022
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