scholarly journals Comparative Study and Analysis of Dry and Wet Connections of Precast Beam-Column under Cyclic Load

2020 ◽  
pp. 141-145
Author(s):  
Kugan K ◽  
Nandha Kumar P
Keyword(s):  
Cyclic Load ◽  
Steel Plate ◽  
Precast Concrete ◽  
Test Variable ◽  
Rapid Construction ◽  
Plate Anchor ◽  
Primary Test ◽  
Column Joint ◽  
High Result ◽  
Dowel Bar

At present the Precast building are more focus for the building industrialization and main objective of this study to find the most appropriate types of beam-column connection, the purpose of this study is to investigate and high result of precast beam column joint with two types of dry mechanical connection & two types of wet connection were analysis and compared with monolithic connection to know the performance of the joints. the primary test variable were the type of connection cleat angle, dowel bar, fibre reinforced concrete, steel plate, anchor rod and the pre tension bolt are used in this joints the advantage of the precast concrete structure components are assemble in which are fabricated off-site and then connect on-site in term of less resource consumption, more rapid construction, better quality control and less field wet operation.

scholarly journals CYCLIC PERFORMANCE OF HDR HOOK-END PRECAST BEAM-COLUMN JOINT: A FINITE ELEMENT ANALYSIS

2019 ◽  
Vol 81 (6) ◽  
Author(s):  
Kai Siong Woon ◽  
Farzad Hejazi ◽  
Mohd Saleh Jaafar ◽  
Farah Nora Aznieta Abd. Aziz
Keyword(s):  
Finite Element ◽  
Cyclic Loading ◽  
Precast Concrete ◽  
Concrete Cover ◽  
Numerical Results ◽  
Cyclic Performance ◽  
Element Analysis ◽  
Finite Element Software ◽  
Column Joint ◽  
Dowel Bar

Small concrete cover to dowel’s diameter reduces the cyclic performance of precast concrete frame with pinned dowel beam-column connection due to brittle concrete splitting failure around the dowel joint. Besides, utilisation of bearing pad thicker than half of dowel’s diameter causes the dowel bar to sustain greater tensile stress and plastic elongation up to their breaking point due to larger inclination of the dowel bar, particularly under the action of cyclic loading. Hence, a new precast beam-column joint with hook-end configuration and utilizing the advantage of high damping rubber (HDR), was proposed as the alternative for precast structures. Therefore, this study presented the horizontal and vertical cyclic performances of the precast frames with the proposed joint, through numerical analysis using finite element software. The numerical results were compared with a numerical modelled single pinned dowel connected precast frame, which was verified with the experimental results under horizontal cyclic loading. In terms of accumulative energy dissipation capacity, the numerical results showed that precast frames with the proposed joint demonstrated approximately 230% and 120% of improvement at 40 mm of horizontal cyclic level and 7 mm of vertical cyclic level, respectively, than the precast frame with single pinned dowel connection. It indicates that the viscoelastic behavior of HDR has contributed the benefit in this improvement.

Comparing the Seismic Performance of Beam-Column Joints with and without SFRC when Subjected to Cyclic Loading

2012 ◽  
Vol 626 ◽  
pp. 85-89 ◽  
Author(s):  
Kay Dora Abdul Ghani ◽  
Nor Hayati Hamid
Keyword(s):  
Energy Dissipation ◽  
Cyclic Loading ◽  
Seismic Performance ◽  
Experimental Work ◽  
Concrete Beam ◽  
Steel Fiber ◽  
Precast Concrete ◽  
Experimental Results ◽  
Column Joint ◽  
Initial Cracks

The experimental work on two full-scale precast concrete beam-column corner joints with corbels was carried out and their seismic performance was examined. The first specimen was constructed without steel fiber, while second specimen was constructed by mixed up steel fiber with concrete and placed it at the corbels area. The specimen were tested under reversible lateral cyclic loading up to ±1.5% drift. The experimental results showed that for the first specimen, the cracks start to occur at +0.5% drifts with spalling of concrete and major cracks were observed at corbel while for the second specimen, the initial cracks were observed at +0.75% with no damage at corbel. In this study, it can be concluded that precast beam-column joint without steel fiber has better ductility and stiffness than precast beam-column joint with steel fiber. However, precast beam-column joint with steel fiber has better energy dissipation and fewer cracks at corbel as compared to precast beam-column joint without steel fiber.

scholarly journals Analysis on the value of stiffness of the dual joint straightness notch joint of beams due to cyclic lateral load

2021 ◽  
Vol 921 (1) ◽  
pp. 012019
Author(s):  
M R Nur ◽  
H Parung ◽  
A A Amiruddin
Keyword(s):  
Control Method ◽  
Monolithic Column ◽  
Precast Concrete ◽  
European Convention ◽  
Building Structures ◽  
Earthquake Loads ◽  
Cyclic Lateral Load ◽  
Beam Type ◽  
Column Joint ◽  
Displacement Control Method

Abstract Precast concrete is an answer to the demands of building structures that save time, but cannot be used widely because of the reliability of the connection, especially during an earthquake, the desired earthquake-resistant building structure must have sufficient strength and rigidity. Stiffness is one of the factors that determine the response of a structure to earthquake loads. When connected with earthquake loads, a structure must have sufficient rigidity so that its movement during an earthquake can be limited. This study aims to determine and analyze the stiffness in the double columns straight joint beam notches due to lateral cyclic load. By dividing 3 (three) types of test specimens, namely Monolithic column Beam, Type 1 Column Joint (SBK), and Type 2 Column Beam Joint (SBK). The connection used is a double straight notch and using the grouting method. Testing and analysis using the Displacement Control Method with the European Convention for Constructional Steelwork (ECCS) 1986 standards. The results showed the monolith column Column (BK) specimens have a greater stiffness value compared to SBK 1 specimens and SBK 2 specimens.

Experimental study of precast beam-to-column joints with steel connectors under cyclic loading

2020 ◽  
Vol 23 (13) ◽  
pp. 2822-2834
Author(s):  
Xian Rong ◽  
Hongwei Yang ◽  
Jianxin Zhang
Keyword(s):  
Energy Dissipation ◽  
Cyclic Loading ◽  
Load Capacity ◽  
Precast Concrete ◽  
Displacement Ductility ◽  
Reversed Cyclic Loading ◽  
Column Joint ◽  
Energy Dissipation Capacity ◽  
Reversed Cyclic ◽  
The Web

This article investigated the seismic performance of a new type of precast concrete beam-to-column joint with a steel connector for easy construction. Five interior beam-to-column joints, four precast concrete specimens, and one monolithic joint were tested under reversed cyclic loading. The main variables were the embedded H-beam length, web plate or stiffening rib usage, and concrete usage in the connection part. The load–displacement hysteresis curves were recorded during the test, and the behavior was investigated based on displacement ductility, deformability, skeleton curves, stiffness degradation, and energy dissipation capacity. The results showed that the proposed beam-to-column joint with the web plate in the steel connector exhibited satisfactory behavior in terms of ductility, load capacity, and energy dissipation capacity under reversed cyclic loading, and the performance was ductile because of the yielding of the web plate. Therefore, the proposed joint with the web plate could be used in high seismic regions. The proposed joint without the web plate exhibited similar behavior to the monolithic specimen, indicating that this joint could be used in low or moderate seismic zones. Furthermore, the utilization of the web plate was vital to the performance of this system.

Sign in / Sign up

Export Citation Format

Share Document