Location

London

Event Website

http://www.csce2016.ca/

Description

Hollowcore slabs are commonly used for floor and roofs of residential and commercial buildings. Concrete topping, which is commonly cast for leveling purposes, can also be used to increase the load capacity of hollowcore slabs. The post-cracking behaviour of hollowcore slabs greatly affects their ultimate strength. The composite action adds another level of nonlinearity. This paper presents a comprehensive 3-D finite element model that can predict the behaviour of such composite slabs. Nonlinear springs were used to model the interface layer. The nonlinear material behaviour of the concrete and the prestressing strands were also accounted for. Innovative analysis technique to simulate the staged construction of composite hollowcore slabs is also presented. The proposed analysis is validated using results from a previous experimental study by the authors.


Share

COinS
 
Jun 1st, 12:00 AM Jun 4th, 12:00 AM

STR-885: FINITE ELEMENT MODELLING OF COMPOSITE HOLLOWCORE SLABS

London

Hollowcore slabs are commonly used for floor and roofs of residential and commercial buildings. Concrete topping, which is commonly cast for leveling purposes, can also be used to increase the load capacity of hollowcore slabs. The post-cracking behaviour of hollowcore slabs greatly affects their ultimate strength. The composite action adds another level of nonlinearity. This paper presents a comprehensive 3-D finite element model that can predict the behaviour of such composite slabs. Nonlinear springs were used to model the interface layer. The nonlinear material behaviour of the concrete and the prestressing strands were also accounted for. Innovative analysis technique to simulate the staged construction of composite hollowcore slabs is also presented. The proposed analysis is validated using results from a previous experimental study by the authors.

http://ir.lib.uwo.ca/csce2016/London/Structural/50