The effect of grout properties on transmission length in grout-bonded post-tensioned concrete beams

1964 ◽  
Vol 16 (47) ◽  
pp. 93-98 ◽  
Author(s):  
J. D. Geddes ◽  
I. Soroka
Keyword(s):  
Concrete Beams ◽  
Transmission Length ◽  
Post Tensioned

scholarly journals DAMAGE EVALUATION OF PRECAST CONCRETE BEAMS POST-TENSIONED WITH UNBONDED TENDONS USING FIBER BASED MODEL ANALYSIS

2016 ◽  
Vol 81 (729) ◽  
pp. 1921-1931 ◽  
Author(s):  
Hidekazu WATANABE ◽  
Yuki MORIGUCHI ◽  
Taku OBARA ◽  
Susumu KONO ◽  
Hiroyuki TAKENAKA
Keyword(s):  
Concrete Beams ◽  
Precast Concrete ◽  
Model Analysis ◽  
Damage Evaluation ◽  
Unbonded Tendons ◽  
Post Tensioned

Feasibility Study of Prestress Force Prediction for Concrete Beams Using Second-Order Deflections

2018 ◽  
Vol 18 (10) ◽  
pp. 1850124 ◽  
Author(s):  
Marco Bonopera ◽  
Kuo-Chun Chang ◽  
Chun-Chung Chen ◽  
Yu-Chi Sung ◽  
Nerio Tullini
Keyword(s):  
Prestressed Concrete ◽  
Concrete Beams ◽  
Flexural Rigidity ◽  
Beam Theory ◽  
Concrete Bridges ◽  
Prestress Loss ◽  
Prestressed Concrete Bridges ◽  
Loss Prediction ◽  
Euler Bernoulli Beam ◽  
Post Tensioned

The safety and sustainability of prestressed concrete bridges can be improved with accurate prestress loss prediction. Considerable loss of the prestress force may imply damages hidden in the bridge. In this study, a prestress force identification method was implemented for concrete beams. Based on the Euler–Bernoulli beam theory, the procedure estimates the prestress force by using one or a set of static displacements measured along the member axis. The implementation of this procedure requires information regarding the flexural rigidity of the beam. The deflected shape of a post-tensioned concrete beam, subjected to an additional vertical load, was measured in a short term in several laboratory experiments. The accuracy of the deflection measurements provided favorable prestress force estimates. In particular, the “compression-softening” theory was validated for uncracked post-tensioned concrete beams.

Finite Element Analysis of Post Tensioned I-Beam with Web Openings

2016 ◽  
Vol 857 ◽  
pp. 113-118
Author(s):  
Alex Jyothis ◽  
Mathews Vinay
Keyword(s):  
Concrete Beams ◽  
High Strength ◽  
Stress Pattern ◽  
Ansys Software ◽  
Element Analysis ◽  
Web Openings ◽  
Aesthetic Appearance ◽  
Industrial Buildings ◽  
Different Shapes ◽  
Post Tensioned

Construction of pre-stressed concrete (PSC) structures is becoming a common practice in various parts of the world, because of its better stability, serviceability, economy, aesthetic appearance and structural efficiency. Post tensioning is a method of reinforcing concrete or other materials with high strength steel strands or bars, typically referred to as tendons. The provision of large openings in pre-stressed concrete beams is necessary to accommodate utility services in residential, commercial, and industrial buildings. A post tensioned I-beam is analyzed by using ANSYS software and the deformation and stress pattern of beam is studied for different parametric conditions by changing the position of opening and different shapes of openings.

Corrosion-induced flexural behavior degradation of locally ungrouted post-tensioned concrete beams

2017 ◽  
Vol 134 ◽  
pp. 7-17 ◽  
Author(s):  
Xuhui Zhang ◽  
Lei Wang ◽  
Jianren Zhang ◽  
Yongming Liu
Keyword(s):  
Concrete Beams ◽  
Flexural Behavior ◽  
Post Tensioned

Behavior of reinforced concrete beams post-tensioned in the critical shear region

2007 ◽  
Vol 29 (7) ◽  
pp. 1465-1474 ◽  
Author(s):  
Mohammad Shamsai ◽  
Halil Sezen ◽  
Alireza Khaloo
Keyword(s):  
Reinforced Concrete ◽  
Concrete Beams ◽  
Reinforced Concrete Beams ◽  
Post Tensioned

scholarly journals Post-Fire Behavior of Post-Tensioned Segmental Concrete Beams under Monotonic Static Loading

2020 ◽  
Vol 6 (5) ◽  
pp. 889-906
Author(s):  
Nazar Oukaili ◽  
Amer F. Izzet ◽  
Haider M. Hekmet
Keyword(s):  
High Temperature ◽  
Concrete Beams ◽  
Heating Temperature ◽  
Fire Behavior ◽  
Experimental Program ◽  
Time Interval ◽  
Internal Layers ◽  
Fire Event ◽  
Standard Fire ◽  
Post Tensioned

This paper presents a study to investigate the behavior of post-tensioned segmental concrete beams that exposed to high-temperature. The experimental program included fabricating and testing twelve simply supported beams that divided into three groups depending on the number of precasting concrete segments. All specimens were prepared with an identical length of 3150 mm and differed in the number of the incorporated segments of the beam (9, 7, or 5 segments). To simulate the genuine fire disasters, nine out of twelve beams were exposed to a high-temperature flame for one hour. Based on the standard fire curve (ASTM – E119), the temperatures of 300◦C (572◦F), 500◦C (932◦F), and 700◦C (1292◦F) were adopted. Consequently, the beams that exposed to be cool gradually under the ambient laboratory condition, after that, the beams were loaded till failure to investigate the influence of the heating temperature on the performance during the serviceability and the failure stage. It was observed that, as the temperature increased in the internal layers of concrete, the camber of tested beams increased significantly and attained its peak value at the end of the time interval of the stabilization of the heating temperature. This can be attributed to the extra time that was consumed for the heat energy to migrate across the cross-section and to travel along the span of the beam and deteriorate the texture of the concrete causing microcracking with a larger surface area. Experimental findings showed that the load-carrying capacity of the test specimen, with the same number of incorporated concrete segments, was significantly decreased as the heating temperature increased during the fire event.

scholarly journals FINITE ELEMENT ANALYSIS OF BEHAVIOR OF POST TENSIONED CONCRETE BEAMS WITH OPENINGS IN SHEAR REGIONS.

2017 ◽  
Vol 5 (12) ◽  
pp. 902-911
Author(s):  
Hamdy shehabeldin ◽  
◽  
htem gheith ◽  
salahabdel megeed ◽  
emadeldin zaki ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Concrete Beams ◽  
Element Analysis ◽  
Post Tensioned
Sign in / Sign up

Export Citation Format

Share Document