Mathematical Modelling of Thermo-Hydro-Mechanical Behaviour for Concrete under Elevated Temperature

被引：2

作者：

Zhang, Shaobo ^{[1
]}

Wang, Xiaochun ^{[1
]}

Shen, Xinpu ^{[1
]}

机构：

[1] North China Univ Technol, Beijing 100144, Peoples R China

来源：

APPLIED MECHANICS, MATERIALS AND MANUFACTURING IV | 2014年 / 670-671卷

关键词：

concrete; moisture movement; elevated temperature; multi-phase continuum; coupling; HYGROTHERMAL BEHAVIOR; COUPLED HEAT; DAMAGE; MEDIA; FIRE;

D O I：

10.4028/www.scientific.net/AMM.670-671.355

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

A hydro-thermo-mechanical model was presented for concrete at elevated temperature. Three phases of continuum were adopted in this model: gaseous mixture of water vapor and dry air, liquid water, and solid skeleton of concrete. Mass conservation equations, linear momentum conservation equation, and energy conservation equation were derived on the basis of the macroscopic Navier-Stokes equations for a general continuum, along with assumptions made for the purpose of simplification. Mathematical relationships between selected primary variables and secondary variables were given with existing data from references. Specifications of the constitutive relations were made for the kinetic variables and their conjugate forces.

引用

页码：355 / 364

页数：10

共 18 条

[1]

Bazant Z.P., 1996, Concrete at High Temperatures: Material Properties and Mathematical Models

[2] Numerical and experimental analysis of chemical dehydration, heat and mass transfers in a concrete hollow cylinder submitted to high temperatures [J].

Dal Pont, S ;

Ehrlacher, A .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2004, 47 (01) :135-147

[3] MOISTURE FLOW IN CONCRETE UNDER STEADY-STATE NONUNIFORM TEMPERATURE STATES - EXPERIMENTAL-OBSERVATIONS AND THEORETICAL MODELING [J].

ENGLAND, GL ;

KHOYLOU, N .

NUCLEAR ENGINEERING AND DESIGN, 1995, 156 (1-2) :83-107

[4] Modelling of hygro-thermal behaviour of concrete at high temperature with thermo-chemical and mechanical material degradation [J].

Gawin, D ;

Pesavento, F ;

Schrefler, BA .

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING, 2003, 192 (13-14) :1731-1771

[5]

Gawin D, 1999, MECH COHES-FRICT MAT, V4, P37, DOI 10.1002/(SICI)1099-1484(199901)4:1<37::AID-CFM58>3.3.CO

[6]

2-J

[7]

HASSANIZADEH SM, 1986, ADV WATER RESOUR, V9, P207, DOI 10.1016/0309-1708(86)90025-4

[8] Prediction of moisture migration and pore pressure build-up in concrete at high temperatures [J].

Ichikawa, Y ;

England, GL .

NUCLEAR ENGINEERING AND DESIGN, 2004, 228 (1-3) :245-259

[9] TRANSIENT THERMAL STRAIN OF CONCRETE - LITERATURE-REVIEW, CONDITIONS WITHIN SPECIMEN AND BEHAVIOR OF INDIVIDUAL CONSTITUENTS [J].

KHOURY, GA ;

GRAINGER, BN ;

SULLIVAN, PJE .

MAGAZINE OF CONCRETE RESEARCH, 1985, 37 (132) :131-144

[10]

Le Bellégo C, 2000, J ENG MECH-ASCE, V126, P266

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