Innovative structural system consisting of CFT columns and precast concrete beams

2016 ◽  
pp. 1069-1076
Author(s):  
L Bezerra ◽  
M Debs ◽  
A Debs
Keyword(s):  
Concrete Beams ◽  
Precast Concrete ◽  
Structural System

Performance evaluation of precast concrete beams reinforced with multifunctional graphite nanomaterials

PCI Journal ◽  
2016 ◽  
Vol 61 (1) ◽  
pp. 29-38 ◽  
Author(s):  
Amirpasha Peyvandi ◽  
Iman Harsini ◽  
Libya Ahmed Sbia ◽  
Ranjith Weerasiri Rankothge ◽  
Saqib Ul Abideen ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Concrete Beams ◽  
Precast Concrete

Nonlinear modelling and seismic behaviour of precast concrete structures with steel shear walls

2016 ◽  
Vol 49 (4) ◽  
pp. 293-304
Author(s):  
Farhad Behnamfar ◽  
Rafeek Artoonian ◽  
Mehdi Ghandil
Keyword(s):  
Precast Concrete ◽  
Shear Walls ◽  
Structural System ◽  
Concrete Frames ◽  
Seismic Behaviour ◽  
Fem Model ◽  
Shell Elements ◽  
Connection Type ◽  
Nonlinear Static ◽  
Good Agreement

A new structural system consisting of precast concrete frames and steel shear walls (SSW's) is introduced and studied numerically in this paper. Two different models, first using ''exact'' FEM and second using approximate equivalent strip model (ESM), are utilized for analysis of such a system with nonlinear static (pushover) procedure. In the FEM model use is made of shell elements while the ESM benefits from simple links that replace the wall panels in the model and are oriented such that they work in tension. Because of good agreement observed between the results of the models in smaller structures, for taller buildings only the ESM approach is followed where computationally applying the FEM approach is impractical. The lateral behaviour of the systems under consideration is investigated with regard to parameters such as number of stories and beam-column connection type. As a result, the ductility, overstrength and response modification factors are calculated for this new structural system as quantities required for their practical design.

Flexural behavior of hybrid precast concrete beams with H-steel beams at both ends

2010 ◽  
Vol 32 (9) ◽  
pp. 2940-2949 ◽  
Author(s):  
Keun-Hyeok Yang ◽  
Myoung-Ho Oh ◽  
Myeong-Han Kim ◽  
Ho-Chan Lee
Keyword(s):  
Concrete Beams ◽  
Precast Concrete ◽  
Flexural Behavior ◽  
Steel Beams

scholarly journals Bending Performance of Concrete Beams Strengthened with Textile Reinforced Mortar TRM

2014 ◽  
Vol 601 ◽  
pp. 203-206 ◽  
Author(s):  
Lluís Gil ◽  
Christian Escrig ◽  
Ernest Bernat-Maso
Keyword(s):  
Composite Material ◽  
Carbon Fibers ◽  
Concrete Beams ◽  
Precast Concrete ◽  
High Strength ◽  
Point Load ◽  
Load Test ◽  
Bending Performance ◽  
Bending Loads ◽  
Textile Reinforced Mortar

This work presents a method of strengthening concrete structures based on textiles of high strength and mortars. The combination of textiles and mortars produces a new composite material with cementitious matrix. This material can be used for the reinforcement of concrete beams under bending loads. We tested several combinations of fibers: glass, Poliparafenil Benzobisoxazol (PBO), steel and carbon fibers with mortar and we used them to reinforce precast concrete beams. All the specimens were tested with a four-point load test. We discuss the performance of the specimens and we compare the ultimate results with the formulae from FRP codes.

scholarly journals TINGKAT KEKAKUAN PADA BETON BERTULANG MENGGUNAKAN APLIKASI RESPONSE-2000

2019 ◽  
Vol 3 (1) ◽  
pp. 7
Author(s):  
Fanny Monika ◽  
Hakas Prayuda ◽  
Al Fajir M Sarita
Keyword(s):  
Concrete Beams ◽  
Precast Concrete ◽  
Maximum Load ◽  
Span Length ◽  
Wing Width ◽  
Flexural Reinforcement

<p class="Abstract"><em>The behavior of precast concrete beams can be seen in the magnitude of the value of maximum load, deflection, moment and curvature. To facilitate analyzing these parameters using the Response-2000 software. The software is used to analyze beams with evenly distributed loads. The output of the application is in the form of deflection values, maximum load, and moment of curvature. This research was carried out by varying the dimensions of the beam and the position of the flexural reinforcement with a span length of 10 m. BU3 beam with a height of 1000 mm, width 150 mm, upper wing height 160 mm, lower wing height 150 mm upper wing width 300 mm and lower wing height 450 mm has a deflection of at least -95,248 mm and BU6 beam with a height of 1080 mm, width 152 mm, wing height 100 mm, wing height 130 mm, wingspan 381 mm and wing width 508 mm having a deflection of at most -114,471 mm. BU2 beam with a height1000 mm, width 150 mm, upper wing height 240 mm, wing height 150 mm, wingspan 300 mm and wingspan 450 mm has the smallest maximum load 81,265 kN/m and BU6 beam has maximum load 93,224 kN/m. BU2 beam has the smallest nominal moment of 1821,036 kNm and BU6 beam has the largest nominal moment value of 2093,920 kNm</em></p>

scholarly journals Development of Precast Concrete Beams with Splice-bar Joints of Longitudinal Bars at the Midspan

2008 ◽  
Vol 46 (11) ◽  
pp. 25-33
Author(s):  
H. Watanabe ◽  
T. Terashima ◽  
A. Hattori ◽  
T. Korenaga
Keyword(s):  
Concrete Beams ◽  
Precast Concrete

scholarly journals Effect of Ground Granulated Blast Furnace Slag Replacement Ratio on Structural Performance of Precast Concrete Beams

Materials ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 7159
Author(s):  
Yong-Jun Lee ◽  
Hyeong-Gook Kim ◽  
Kil-Hee Kim
Keyword(s):  
Blast Furnace ◽  
Blast Furnace Slag ◽  
Concrete Beams ◽  
Precast Concrete ◽  
Experimental Results ◽  
Structural Performance ◽  
Replacement Ratio ◽  
Granulated Blast Furnace Slag ◽  
The Mean ◽  
Furnace Slag

This study was conducted to investigate the effect of ground granulated blast furnace slag on the structural performance of precast concrete beams, evaluating the flexural, shear and bonding performance by using the replacement ratio of the ground granulated blast furnace slag as a variable. The design strength of the concrete was set at 45 MPa in consideration of the characteristics of precast concrete products, and the replacement ratio of the ground granulated blast furnace slag to replace cement was 30 to 70%. The experimental results showed that all specimens had similar behavioral characteristics regardless of the replacement ratio of the ground granulated blast furnace slag. Comparison of the prediction results obtained by ACI 318-19 and EC 2 showed that the mean flexural strength and shear strength were higher than 1.19 and 1.43, respectively, and the mean bond strength was 1.57, satisfying the required performance. Therefore, the experimental results showed that in using the ground granulated blast furnace slag as an admixture for precast concrete, the cement replacement ratio may be increased up to 70% without causing any problems in securing the structural performance. Summarizing the results of the present study, a ground granulated blast furnace slag replacement ratio of 50% or lower may be reasonably applied.

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