TIME-DEPENDENT SERVICE-LOAD BEHAVIOR OF WOOD FLOORS - ANALYTICAL MODEL

A preceding companion paper[1] examined the experimental time-dependen t service-load response of wood joist floor systems, including an asse ssment of time-dependent deflections and load distribution. The result s of the experimental program are used herein to develop an analytical model for the time-dependent response of wood joist floors. Time-depe ndent component (i.e. joist, sheathing and connection) models are deve loped from component tests. These component models are then integrated into a system model. The focus of this paper is to present the theore tical basis for the rime-dependent system model, and illustrate its pr edictive capabilities. The system model approximates the time-dependen t system creep of parallel-member wood systems to an acceptable degree of accuracy. Moreover, the model requires relatively little computer time, thus making it suitable for use in a Monte Carlo simulation. (C) 1998 Published by Elsevier Science Ltd.