Upload
nilesh-saksena
View
215
Download
0
Embed Size (px)
Citation preview
7/29/2019 Lliterature Review for master of structure engineering
1/25
DYNAMIC ANALYSIS OF
REINFORCED CONCRETEBEAM WITH WEB OPENINGS
GUIDED BY:-
Prof. P.G.Patel
1
PRESENTED BY:-
NILESH H. SAKSENAEN. NO. 110280715004
SUBJECT AREA:-ANALYSIS, DESIGN, FEM
7/29/2019 Lliterature Review for master of structure engineering
2/25
INTRODUCTION In the construction of modern buildings, a network of
pipes and ducts is necessary to accommodate essentialservices like water supply, sewage, air-conditioning,
electricity, telephone, and computer network.
Usually, these pipes and ducts are placed underneath thebeam soffit and, for aesthetic reasons, are covered by a
suspended ceiling, thus creating a dead space.
Passing these ducts through transverse openings in thefloor beams leads to a reduction in the dead space andresults in a more compact design.
2
7/29/2019 Lliterature Review for master of structure engineering
3/25
INTRODUCTION
For small buildings, the savings thus achieved may not be
significant, but for multistory buildings, any saving in story height
multiplied by the number of stories can represent a substantial
saving in total height, length of air-conditioning and electricalducts, plumbing risers, walls and partition surfaces, and overall
load on the foundation.
However provisions of openings in web of the beam increase thestress concentration around the openings and change the simple
behavior of the beam into very complex behavior.3
7/29/2019 Lliterature Review for master of structure engineering
4/25
LITERATURE STUDY
4
7/29/2019 Lliterature Review for master of structure engineering
5/25
5
PAPER :1
TITLE:Investigation of the Opening Effects onthe Behavior of Concrete Beams Without
Additional Reinforcement in Opening Region
Using Fem Method.
AUTHOR:Soroush Amiri, Reza Masoudnia.
JOURNAL:Australian Journal of Basic and
Applied Sciences.
YEAR:2011.
7/29/2019 Lliterature Review for master of structure engineering
6/25
6
In this study they simulate the simply supported concrete beams
consisting of circular openings with varying diameters using
ANSYS 10.
All beams had an identical cross section of 100 mm 250
mm and 2000 mm in length with the circular opening inseven diameters: 150 mm, 130 mm, 120 mm, 110 mm, 100
mm, 80 mm and 60 mm.
The beams were simulated to obtain the load-deflection
behavior.
7/29/2019 Lliterature Review for master of structure engineering
7/25
7
VERIFICATION STUDY:
They modeled two beams one without opening and other with
rectangular openings using ANSY10.
The beam already tested experimentally by Abdalla etal. (2003).
The dimensions of the full-size beams were 100 mm 2050
mm250 mm. The span between the two supports was 2000
mm. Longitudinal reinforcements and shear stirrups are modeled
throughout the beam.
The goal of the comparison of the FE model and the beam fromAbdalla (2003) is to ensure that the simulation process is
correct.
7/29/2019 Lliterature Review for master of structure engineering
8/25
8
The first beam was RC solid beam without opening that the ultimate load obtained
from the experimental test was 83,000N, while the ultimate load extracted from
ANSYS analysis outputs is 77,925N. Therefore, the difference is about 6% and it
was proven that ANSYS software is an appropriate method to predict the behavior
of RC beams.
7/29/2019 Lliterature Review for master of structure engineering
9/25
9
The second beam was RC beam with rectangular opening (height of the opening
= 100 mm and width of the opening = 300mm). The ultimate load obtained from
the experimental test was 41,000N, whilst the ultimate load attained from
ANSYS analysis outputs is 47,582N. Therefore, the difference is about 16% and
it was acceptable.
7/29/2019 Lliterature Review for master of structure engineering
10/25
10
EFFECTS OF CIRCULAR OPENING SIZES WITH
VARYING DIAMETERS:
LOAD VD DEFLECTION CURVE FOR DIFFERENT MODELS
7/29/2019 Lliterature Review for master of structure engineering
11/25
11
RESULTS FROM THE LOAD VS DEFLECTION CURVE:
7/29/2019 Lliterature Review for master of structure engineering
12/25
12
CONCLUSION:
The results obtained from this study showed that the
performance of the beams with circular openings with diameterless than 0.48D (D is depth of the beam web) has no effect on
the ultimate load capacity of the RC rectangular section beams.
Introducing the circular opening with diameter more than
0.48D reduces the ultimate load capacity of the RC rectangular
section beams at least 26%.
7/29/2019 Lliterature Review for master of structure engineering
13/25
13
PAPER:2
TITLE:The Study of the Effects of Web Openings on theConcrete Beams.
AUTHOR:Soroush Amiri, Reza Masoudnia and Ali Akbar
Pabarja
JOURNAL:Australian Journal of Basic and Applied Sciences
YEAR:2011.
7/29/2019 Lliterature Review for master of structure engineering
14/25
14
ABSTRACT:
This paper aims to review the results of previous research
studies on precast and prestressed beams, T-beams, deep
beams, and rectangular concrete beams with web openings.
The behavior of both reinforced concrete beams with
rectangular and circular openings and precast beams withrectangular and circular openings was investigated.
The effects of the size and location of the openings on the
behavior of such beams are examined and the strengths ofthese openings are explored as well.
7/29/2019 Lliterature Review for master of structure engineering
15/25
15
PAPER:3
TITLE:DESIGN OF REINFORCED CONCRETE BEAMS
WITH WEB OPENINGS.
AUTHOR:M.A. Mansur.
JOURNAL:The 6th Asia-Pacific Structural Engineering andConstruction Conference (APSEC 2006).
YEAR:2006.
7/29/2019 Lliterature Review for master of structure engineering
16/25
16
ABSTACT:
In this paper, major findings relevant to the analysis and design
of such beams under the most commonly encountered loadingcase of bending and shear are extracted and summarized.
BEAMS WITH SMALL OPENINGS:
Openings may be considered as small openings if depth (or
diameter) of the opening is less than 40% of the overall beam
depth.
BEAMS WITH LARGE OPENINGS:
Openings having depth more than 40% of overall depth are
considered as large openings.
7/29/2019 Lliterature Review for master of structure engineering
17/25
17
REINFORCEMENT DETAILS:
REINFORCEMENT DETAILS FOR BEAM WITH SMALL
CIRCULAR OPENING.
7/29/2019 Lliterature Review for master of structure engineering
18/25
18REINFORCMENT DETAILS FOR BEAM WITH LARGE
OPENING.
REINFORCEMENT DETAILS:
7/29/2019 Lliterature Review for master of structure engineering
19/25
19
PAPER:4
TITLE: A review of design specifications of opening in the webfor simply supported RC beams.
AUTHOR: Soroush Amiri*, Reza Masoudnia and Mohammad
Amin Ameri.
JOURNAL: Journal of Civil Engineering and Construction
Technology.
YEAR: April 2011.
7/29/2019 Lliterature Review for master of structure engineering
20/25
20
FACILITATION OF SELECTING THE SIZE AND
LOCATION OF THE WEB OPENINGS:
7/29/2019 Lliterature Review for master of structure engineering
21/25
21
CONCLUSIONS:
In this paper they gives the details for the location of the
openings in the beam.
More evaluation of behavior for concrete beam with webopenings is needed to gain more efficient and reasonable
methods for designing and construction.
7/29/2019 Lliterature Review for master of structure engineering
22/25
OBJECTIVES OF THE RESEARCH
To determine the effects of the size and location of the
openings on the behaviour of the beam.
Dynamic analysis of the beam with openings using finite
element analysis in ANSYS 14.
Interpretation of the result obtained by software analysisand its comparison with experimental result.
22
7/29/2019 Lliterature Review for master of structure engineering
23/25
MODELOFBEAMCREATEDINANSYS 14 WORKBENCH:
23
7/29/2019 Lliterature Review for master of structure engineering
24/25
WORK SCHEDULE
24
Sr.
No.
Month Work to be done
1 August-2012 Topic selection and literature collection
2 September-2012 Review of literature
3 October-2012 Learning software ANSYS
4 November-2012 Learning software ANSYS
5 December-2012 Application of the software to the modeling
6 Jauary-2013 Modeling of the beam using appropriate software
7 February-2013 Analysis of the model
8 March-2013 Interpretation of the result
9 April-2013 Reporting
10 May-2013 Submission
11 June-2013 Defense
7/29/2019 Lliterature Review for master of structure engineering
25/25
25