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Numerical analysis with joint model on RC assemblages subjected to progressive collapse

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : Numerical analysis with joint model on RC assemblages subjected to progressive collapse
นักวิจัย : Tan, Kang Hai , Yu, Jun
คำค้น : DRNTU::Engineering::Civil engineering::Structures and design
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2557
อ้างอิง : Tan, K. H., & Yu, J. (2014). Numerical analysis with joint model on RC assemblages subjected to progressive collapse. Magazine of concrete research, 66(23), 1201-1218. , http://hdl.handle.net/10220/24474 , http://dx.doi.org/10.1680/macr.14.00100
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Magazine of concrete research
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

The behaviour of structures subjected to progressive collapse is typically investigated by introducing column-removing scenarios. Previous experimental results show that large-deformation performances of reinforced concrete (RC) assemblages under a middle column removal scenario (MCRS) involve discontinuity due to bar slip and fracture near the joint interfaces. To consider the effects of the discontinuity on structural behaviour, a component-based joint model is introduced into macromodel-based finite-element analysis (macro-FEA), in which beams are modelled as fibre elements. The joint model consists of a series of non-linear springs, each of which represents a load transfer path from adjoining members to a joint. The calibration procedures of spring properties are illustrated systematically. In particular, a macro-bar stress–slip model is developed to consider the effects of large post-yield tensile strains and finite embedment lengths on the bar stress–slip relationship. Comparisons of simulated and observed responses for a series of RC assemblages indicate that macro-FEA incorporating the joint model is a practical approach to simulate the essential structural behaviour of RC assemblages under a MCRS, including catenary action. Finally, the macro numerical model is used to investigate the effects of boundary conditions, bar curtailment and beam depth on the structural behaviour of RC assemblages. The results suggest that beam depth affects the fixed-end rotation contributed by bar slip, and further significantly influences the development of catenary action.

บรรณานุกรม :
Tan, Kang Hai , Yu, Jun . (2557). Numerical analysis with joint model on RC assemblages subjected to progressive collapse.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Tan, Kang Hai , Yu, Jun . 2557. "Numerical analysis with joint model on RC assemblages subjected to progressive collapse".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Tan, Kang Hai , Yu, Jun . "Numerical analysis with joint model on RC assemblages subjected to progressive collapse."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2557. Print.
Tan, Kang Hai , Yu, Jun . Numerical analysis with joint model on RC assemblages subjected to progressive collapse. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2557.