Predicting the fire resistance of timber members loaded in tension

摘要: SUMMARY The paper presents a numerical model for predicting the fire resistance of timber members. Fire is evaluated in two-step process implemented Abaqus finite element code: first, time-dependent thermal analysis member exposed to and then structural under constant load are performed. The considers reduction mechanical properties (modulus elasticity strength) with temperature. terminates when can no longer redistribute stresses from hottest coldest parts, leading failure. was used simulate tests carried out on specimens made laminated veneer lumber loaded tension. Experimental data terms temperature, charring depth, displacement failure time were compared results obtained by assuming degradation temperature as suggested Eurocode 5, showing an overall acceptable approximation. predicted depending upon applied tensile loads using analytical formulas. proposed be predict structures alternative expensive complicated experimental tests. Copyright © 2012 John Wiley & Sons, Ltd.