Analytical study of effect of web opening on flexural behaviour of hybrid beams

2019 ◽  
Vol 20 (4) ◽  
pp. 537-547 ◽  
Author(s):  
Samadhan G. Morkhade ◽  
Manisha Kshirsagar ◽  
Radhika Dange ◽  
Apurva Patil
Keyword(s):  
Analytical Study ◽  
Flexural Behaviour ◽  
Web Opening ◽  
Hybrid Beams

Flexural behaviour of multi-span GFRP-concrete hybrid beams

2009 ◽  
Vol 31 (7) ◽  
pp. 1369-1381 ◽  
Author(s):  
João R. Correia ◽  
Fernando A. Branco ◽  
João G. Ferreira
Keyword(s):  
Flexural Behaviour ◽  
Hybrid Beams

Push-out test on the web opening shear connector for a slim-floor steel beam: Experimental and analytical study

2018 ◽  
Vol 163 ◽  
pp. 137-152 ◽  
Author(s):  
Emad Hosseinpour ◽  
Shahrizan Baharom ◽  
Wan Hamidon W. Badaruzzaman ◽  
Ahmed W. Al Zand
Keyword(s):  
Analytical Study ◽  
Steel Beam ◽  
Shear Connector ◽  
Web Opening ◽  
Push Out ◽  
The Web

scholarly journals Effect of Web Openings on Flexural Behaviour of Underground Metro Station RC Beams under Static and Cyclic Loading

2020 ◽  
Vol 2020 ◽  
pp. 1-15
Author(s):  
Ting-jin Liu ◽  
Si-wei Chen ◽  
Zi-hang Feng ◽  
Hong-yuan Liu
Keyword(s):  
Cyclic Loading ◽  
Rc Beams ◽  
Flexural Behaviour ◽  
Underground Engineering ◽  
Engineering Project ◽  
Metro Station ◽  
Web Openings ◽  
Web Opening ◽  
Static And Cyclic Loading ◽  
The Impact

This paper investigates the influence of multiple transverse web openings on the flexural behaviour of underground metro station reinforced concrete (RC) beams. This problem is outlined with an actual underground engineering project, in which the web opening used in the RC beams violates the current specifications. A total of five beams with different numbers of web openings are fabricated and tested under static and cyclic loading conditions, thereby simulating actual operations in unfavourable conditions. The results suggest that the existence of the openings decreases the loadbearing capacity, ductility, stiffness, and energy dissipation ability of the RC beams. Moreover, the results show that the corners of the openings are the weakest parts of the beams. However, additional reinforcements around the openings can partially mitigate the impact of the openings on the loadbearing and seismic performance of the RC beams. The laboratory experiments presented herein not only provide guidelines for the use of RC beams with web openings in actual engineering projects, especially underground projects where RC beams with web openings have seldom been investigated, but also shed light on improving the related design specifications.

scholarly journals Experimental-Analytical Study of CFRP strengthening Effect of Reinforced Concrete Beams with Web Opening under Torsion and Bending

2021 ◽  
Vol 28 (2) ◽  
pp. 46-52
Author(s):  
Dareen AL Salamah ◽  
Ghandi Jahjah ◽  
Ihsan Al Tarsh
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Reinforced Concrete ◽  
Analytical Model ◽  
Concrete Beam ◽  
Analytical Study ◽  
Concrete Beams ◽  
Reinforced Concrete Beams ◽  
Strengthening Effect ◽  
Web Opening

— The strength of reinforced concrete beams is reduced to high extent when openings are created in their webs, so it is necessary to strengthen these beams by any modern strengthening methods to restore the strength of the beams before openings are created in their webs to continue in use of these beams. Analytical study is presented in this research to study CFRP strengthening effect around created opening in reinforced concrete beams under torsion and bending. The research depends on finite element method using Ansys 15. It is used SOLID65 to model concrete beam, SOLID 185 to model CFRP, supports and steel arms, and LINK 181 for long steel and stripes. Then analytical model is built to model reinforced concrete beams. This model gives results which are closed to experimental results.

scholarly journals Flexural behaviour of hybrid fiber reinforced concrete beamusing BFRP bars

2021 ◽  
Vol 309 ◽  
pp. 01179
Author(s):  
Guntupally Nikhil ◽  
K. Hemalatha ◽  
V Mallikarjuna Reddy ◽  
V. Swamy Nadh
Keyword(s):  
Reinforced Concrete ◽  
Weight Ratio ◽  
Fiber Reinforced Concrete ◽  
Fiber Reinforced ◽  
Flexural Behaviour ◽  
Loading Test ◽  
Repair Work ◽  
Bonding Performance ◽  
Hybrid Beams ◽  
Pva Fiber

The corrosion of rebar is one of the main problem in the construction industry. A lot of amount is spent on the repair work every year but none of them is that effective. Therefore, the recent studies are being conducting on the FRP rebar due to the brittle nature and the bonding performance. We have also used PVA fiber in concrete to increase the strength of the concrete. we are using Hybrid beams in which we have replaced the corner rebar with BFRP bars because of their superior corrosion effect and the strength to weight ratio. We used four point loading test on these hybrid reinforced beams to find the flexural behaviour by which we can predict the performance. 0.25% PVA fiber reinforced concrete showed the optimum results.

scholarly journals Ductility Improvement of R.C Beams with Large Web opening by using Reactive Powder Concrete Layers

2018 ◽  
Vol 25 (3) ◽  
pp. 30-39
Author(s):  
Husain Khalaf Jarallah ◽  
Nidaa Qassim Jassim
Keyword(s):  
Ultimate Load ◽  
Concrete Beams ◽  
Reinforced Concrete Beams ◽  
Reactive Powder Concrete ◽  
Normal Concrete ◽  
Simply Supported ◽  
Hybrid Beam ◽  
Web Opening ◽  
Hybrid Beams ◽  
Reactive Powder

In this investigation the effect of large web opening on the on the behaver of beams made by normal concrete (NC) and reactive powder concrete (RPC) have been studied. The experimental work consists of casting and testing in flexure 12 rectangular simply supported reinforced concrete beams. The main parameters of this test are opening locations and normal concrete and RPC location with is the section. The ultimate loads, cracking loads, load -deflection behavior, skew of the openings (deflection at the two opposite corners of openings) and ductility were discussed. These results showed that increase ultimate loads (Pu) and stiffness by increase RPC layers. The using RPC layers increase ultimate load about (1-30) %. Using RPC in compression fiber is found to be more effective than using RPC in tension fiber. The cracking load of hybrid beam with one layer of RPC in compression fiber (having one opening) higher than NC beams by 48.5%. The ultimate strength was decreases with increases opening about (4-21)%, thus indicating that the stiffness decreases accordingly. Hybrid beams with RPC in tension fiber failed with less crack than those for hybrid beams with RPC in compression fiber at the same number of openings. The skew at opening of flexural zone show greater values than the skew at opening in shear zone for each beam until failure. The increase in the number of openings leads to increase in the ductility because it reduces the strength of beams.

scholarly journals Strengthening of RC T-Section Beams Subjected to Cyclic Load Using CFRP Sheets

2008 ◽  
Vol 17 (6) ◽  
pp. 096369350801700
Author(s):  
Gokhan Sakar ◽  
Omer Zafer Alku
Keyword(s):  
Cyclic Load ◽  
Analytical Study ◽  
Test Results ◽  
Flexural Behaviour ◽  
Design Code ◽  
Cfrp Sheets ◽  
Reinforced Polymer ◽  
Carbon Fibre Reinforced Polymer ◽  
Fibre Reinforced Polymer ◽  
Strength And Stiffness

The results of an experimental and analytical study of the behaviour of reinforced concrete (RC) T-section beams strengthened with carbon fibre reinforced polymer (CFRP) sheets are presented. Shear deficient specimens are strengthened by using side-bonded and [Formula: see text] - jacketed CFRP sheets. The effect of CFRP sheets on strength and stiffness of the beams is considered for various orientations of the fibres. The main objective of the study is to obtain ductile flexural behaviour from the shear deficient RC beams. To verify the reliability, test results were compared with results of ACI-440 design code, Concrete Society TR55, Fib Bulletin 14 and Colotti et al. model.

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