Nonlinear plastic hinge analysis of three-dimensional steel frames in fire

被引：32

作者：

Ma, KY ^{[1
]}

Liew, JYR ^{[1
]}

机构：

[1] Natl Univ Singapore, Dept Civil Engn, Singapore 117576, Singapore

来源：

JOURNAL OF STRUCTURAL ENGINEERING | 2004年 / 130卷 / 07期

关键词：

yield strength; fire resistance; plastic hinges; steel frames; plasticity;

D O I：

10.1061/(ASCE)0733-9445(2004)130:7(981)

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

A beam-column model for simulating the inelastic behavior of three-dimensional (3D) steel frames is presented. Yielding of the steel section is modeled by two nested stress-resultant surfaces and takes into consideration the softening effect of steel material at elevated temperature. Derivation of the inelastic stiffness of a 3D beam-column element is presented. Degradation of the strength of the material at elevated temperatures is formulated according to the "effective yield strength" concept. Application of the method is demonstrated by analyzing and studying the behavior of steel members and a 3D multistory frame exposed to fire.

引用

页码：981 / 990

页数：10

共 26 条

[1]

[Anonymous], J ENG MECH DIV

[2] Analyses of the effects of cooling and fire spread on steel-framed buildings [J].

Bailey, CG ;

Burgess, IW ;

Plank, RJ .

FIRE SAFETY JOURNAL, 1996, 26 (04) :273-293

[3]

*BRIT STAND I, 1994, BS ENV 1991 EUR 1 BA

[4]

*CEN, 2001, DRAFT PREN 1993 1 2

[5]

*CEN, 2001, DRAFT PREN 1991 1 2

[6] Stress-resultant plasticity for frame structures [J].

El-Tawil, S ;

Deierlein, GG .

JOURNAL OF ENGINEERING MECHANICS-ASCE, 1998, 124 (12) :1360-1370

[7] THE ANALYSIS OF SEMIRIGID FRAMES IN FIRE - A SECANT APPROACH [J].

ELRIMAWI, JA ;

BURGESS, IW ;

PLANK, RJ .

JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH, 1995, 33 (1-2) :125-146

[8]

HILMY SI, 1985, P NUMETA 85, P301

[9] Three-dimensional analysis of composite steel-framed buildings in fire [J].

Huang, ZH ;

Burgess, IW ;

Plank, RJ .

JOURNAL OF STRUCTURAL ENGINEERING, 2000, 126 (03) :389-397

[10]

Lennon T, 1999, Struct Eng, V77, P15

← 1 2 3 →