Numerical Investigation on the Effects of Embedding Pvc Pipes in Reinforced Concrete Beams
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Date
2019-08
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Kampala International University, School of engineering and applied science, department of civil enginering
Abstract
Performance of beams with pvc pipes embedded at the center or with an eccentric
pipes needs design consideration of influencing variables such as the pipe size and the
location of the pipe being embedded. This was performed analytically where six RC
beams of dimension (300x450 and span of 3500) were modeled in Abaqus 6.10-3 of
which one was a solid beam and the 5 had varying pipe sizes and location of the pipe
as designated (B-25.4, B-50.8mm,B-76.2mm,B-101.2mmE50 and 127mmE
100mm).The models were assigned correctly with their material properties both
elastically and plastically of which CDP(concrete damaged plasticity) and other
damage parameters from Abaqus manual were incorporated which helped in defining
the failure mechanisms in concrete. The beam models were treated as simply
supported beam and loaded with a concentrated load(500KN) in addition meshing was
done and the concrete elements were assigned with an element type C3D8R
hexagonal elements and meshed with 50x50mm mesh size and for reinforcements
were meshed with global size of 100mm. The analysis was submitted and results
(stresses, strain, load-deflection ductility index and crack patterns) of beams were
compared to solid beam. The results indicated an increase in stresses in concrete and
bottom reinforcement as the pipe size increases and reduction in loading capacity and
ductility index as the pipe size and location varied. Therefore, the size and location of
the pipes in beams affects the strength, stiffness and ductility of the RC beams
Description
Final Year Project Submitted To Kampala International University in Partial Fulfillment of the Award of the Degree
Keywords
Numerical Investigation on the Effects of Embedding Pvc Pipes In Reinforced Concrete Beams