Modelling of steel-timber composite connections: Validation of finite element model and parametric study

被引：100
作者：
Hassanieh, A. [1 ]
Valipour, H. R. [1 ]
Bradford, M. A. [1 ]
Sandhaas, C. [2 ]
机构：
[1] Univ New South Wales, Sch Civil & Environm Engn, Ctr Infrastructure Engn & Safety, Sydney, NSW 2052, Australia
[2] Karlsruhe Inst Technol, Inst Timber Struct & Bldg Construct, D-76131 Karlsruhe, Germany
来源：
ENGINEERING STRUCTURES | 2017年 / 138卷
基金：
澳大利亚研究理事会;
关键词：
Finite element; Hybrid structure; Load-slip; Non-linearity; Steel-timber composite; Timber; PUSH-OUT TESTS; SHEAR CONNECTORS; HEADED STUDS; WOOD; BEHAVIOR; STRENGTH; JOINTS; BEAMS; FRACTURE;
D O I：
10.1016/j.engstruct.2017.02.016
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
This paper investigates the mechanical behaviour of lap steel-timber composite connections using a 3-D continuum-based finite element (FE) model. In the FE models developed, the non-linear behaviour and failure of the timber is captured by a stress-based failure criterion formulated in the framework of continuum-damage mechanics. Yielding of the steel plates and fasteners (i.e. coach screws and bolts) is captured by an elastic-hardening plastic constitutive law. These FE models are validated by experimental (push-out) tests conducted on laminated veneer lumber (LVL)-steel and cross-laminated timber (CLT)steel composite lap connections. It is shown that the FE Models developed in the paper can replicate adequately the load-slip response and failure mode of the hybrid steel-timber composite connections tested. The validated FE model is used to undertake a parametric study that elucidates the influence of the yield strength and the length of the fasteners and the post-tensioning force in the bolts on the stiffness, load carrying capacity and load-slip behaviour of hybrid steel-timber composite connections. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：35 / 49
页数：15
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