Evaluating the Effect of Strength and Geometry Parameters of Angle on Behavior of Post-Tensioned Steel Connection with Top and Bottom Angles

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AZIZI MOHSEN; SIAHPOLO NAVID

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Paper Information

Journal: JOURNAL OF STRUCTURAL AND CONSTRUCTION ENGINEERING Year:2019 | Volume:6 | Issue:2 (24) Page(s): 193-210

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Title

Evaluating the Effect of Strength and Geometry Parameters of Angle on Behavior of Post-Tensioned Steel Connection with Top and Bottom Angles

Author(s)

AZIZI MOHSEN | SIAHPOLO NAVID | Issue Writer Certificate

Keywords

Post-tensioned connectionQ1

Post-tensioned cableQ1

Numerical modelingQ1

Cyclic loadingQ1

AngleQ1

Abstract

Due to the 1994 Northridge earthquake, many of welded steel moment resisting frames (WSMRF) collapsed in the connection area of the beam to a column. The damage in WSMRF, which was contrary to the expectations of the engineers, changed the attitude of the WSMRF. Thus, engineers decided to introduce more ductile and detailed connections. Post-tensioned connection (PTC) is one of the new connections proposed by them. PTC includes high strength, pre-tensioned cables to create self-centering properties and energy dissipation to control plastic deformation. In this study, the Numerical modeling of the PTC was performed using the ABAQUS finite element software. In addition to verify the model accuracy with the experimental results, 6 types of the connection were modeled and the effect of some parameters including the use of high strength steel (HSS) Angle, the application of Angle with unequal leg length, the use of stiffness for Angle and the effect of the ratio of length to thickness on connection behavior under Cyclic loading are investigated. In the range of models of this paper, the results show that the use of HSS for an Angle causes a slight increase in flexural strength and capacity in lateral load bearing. Also, results demonstrated that the use of an Angle with an unequal leg length does not affect the behavior of the connection. The use of stiffness for Angle increases bending strength, capacity, energy dissipation, initial and inelastic stiffness and durability. Also, the reduction of the gage length to the thickness (g/t) from 4 to 3. 6 would increase the energy dissipation of the connection, so that the energy dissipation in the connection with a lower g/t ratio is 17% higher.

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APA: Copy

AZIZI, MOHSEN, & SIAHPOLO, NAVID. (2019). Evaluating the Effect of Strength and Geometry Parameters of Angle on Behavior of Post-Tensioned Steel Connection with Top and Bottom Angles. JOURNAL OF STRUCTURAL AND CONSTRUCTION ENGINEERING, 6(2 (24) ), 193-210. SID. https://sid.ir/paper/252611/en

Vancouver: Copy

AZIZI MOHSEN, SIAHPOLO NAVID. Evaluating the Effect of Strength and Geometry Parameters of Angle on Behavior of Post-Tensioned Steel Connection with Top and Bottom Angles. JOURNAL OF STRUCTURAL AND CONSTRUCTION ENGINEERING[Internet]. 2019;6(2 (24) ):193-210. Available from: https://sid.ir/paper/252611/en

IEEE: Copy

MOHSEN AZIZI, and NAVID SIAHPOLO, “Evaluating the Effect of Strength and Geometry Parameters of Angle on Behavior of Post-Tensioned Steel Connection with Top and Bottom Angles,” JOURNAL OF STRUCTURAL AND CONSTRUCTION ENGINEERING, vol. 6, no. 2 (24) , pp. 193–210, 2019, [Online]. Available: https://sid.ir/paper/252611/en

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