Experimental and numerical study of the ultimate load for collar-plate-reinforced tubular K-joints at fire-induced elevated temperatures

被引：10

作者：

Azari-Dodaran, Neda ^{[1
]}

Ahmadi, Hamid ^{[1
,2
]}

Zhu, Lei ^{[3
]}

Li, Peiyang ^{[3
]}

机构：

[1] Univ Tabriz, Fac Civil Engn, Tabriz 5166616471, Iran

[2] Univ Tabriz, Ctr Excellence Hydroinformat, Fac Civil Engn, Tabriz, Iran

[3] Beijing Univ Civil Engn & Architecture, Sch Civil & Transportat Engn, Beijing, Peoples R China

来源：

SHIPS AND OFFSHORE STRUCTURES | 2022年 / 17卷 / 05期

关键词：

Ultimate capacity; parametric design equation; collar plate; uniplanar CHS K-joint; axial load; fire resistance; T-JOINTS; STATIC STRENGTH; STRUCTURAL BEHAVIOR; T/Y-JOINTS; CAPACITY; DOUBLER;

D O I：

10.1080/17445302.2021.1897221

中图分类号：

U6 [水路运输]; P75 [海洋工程];

学科分类号：

0814 ; 081505 ; 0824 ; 082401 ;

摘要：

The fire resistance of collar-plate-stiffened uniplanar tubular K-joints was studied and formulated in the present research. After establishing a finite element (FE) model and its verification against the results of experimental tests, a total of 1440 numerical simulations were performed on 360 FE models of collar-plate-stiffened uniplanar tubular K-joints at four different temperatures (20, 400, 550, and 700 degrees C). The studied joints were analysed under the axial loading and the reinforcing effect of the collar plate was investigated. Results showed that the resistance enhancement coefficient (R-s ) increases by increasing the gamma, theta, and tau; while it decreases by rising the beta. Results of the parametric investigation were utilised to establish new design equations to determine the bearing capacity of collar-plate-stiffened tubular K-joints under the brace axial loads at fire condition.

引用

页码：1159 / 1177

页数：19

共 43 条

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