Results 191 to 200 of about 3,246,236 (222)

Reassessment of the Lateral Torsional Buckling Resistance of Rolled I-Section Members: Moment Gradient Tests

Journal of Structural Engineering, 2017
AbstractThe lateral torsional buckling (LTB) equations in some current standards are based on unified equations that are a fit to a large body of experimental test data.
Donald W White, Lakshmi Subramanian
exaly   +2 more sources

Reducing the torsional behavior in irregular special moment resisting frames with steel dampers

Journal of Infrastructure Planning and Engineering (JIPE), 2022
Torsional behavior occurs during the earthquake and it caused displacement on the structure. This study evaluated the used of the metallic damper to the asymmetric three-story building structure in various ground motions scaled to response spectrum.
null Billy Fernandus, null I Putu Ellsa Sarassantika   +1 more
openaire   +1 more source

Swimming characteristics of a petal-shaped capsule robot with fluid resistance torsion moment-weaken effect

Journal of the Brazilian Society of Mechanical Sciences and Engineering, 2021
In this paper, a symmetrical, totally 3D printed, Petal-shaped capsule robot (PCR), with fluid resistance torsion moment-weaken effect, is presented. The distribution of fluid dynamic pressure and torsion moment models on the outer surface of the PCR is established, while a constant swimming velocity mathematical model is derived, to describe the ...
Minglu Chi, Huadong Zheng, Rongsheng Liu, Cheng Chang, Yuanli Wang, Xiaoyan Qian, Ruihua Ren   +6 more
openaire   +1 more source

Torsional irregularity indices for the seismic demand assessment of RC moment resisting frame buildings

Structures, 2020
Abstract Design standards across the world use different parameters to quantify degree of torsional irregularity of buildings. Popular among such descriptors are the normalized static eccentricity ratio, torsional radius to mass radius of gyration ratio, maximum to minimum (or average) elastic floor displacement ratio, etc.
Rohan Bhasker, Arun Menon
openaire   +1 more source

A seismic fragility model accounting for torsional irregularity in low‐rise non‐ductile RC moment‐resisting frames

Earthquake Engineering & Structural Dynamics, 2021
AbstractBuildings characterized by torsional irregularity are notorious for their vulnerability to earthquakes. However, most fragility/vulnerability models used for regional seismic risk assessment fail to distinguish between buildings with torsionally balanced and unbalanced configurations.
Rohan Bhasker, Arun Menon
openaire   +1 more source

Experimental investigations of the flexural‐torsional buckling resistance: Steel rolled I‐section beam‐columns under moment gradient

ce/papers, 2021
AbstractBeam‐columns of uniform rolled or equivalent welded sections are the member types most commonly used in steel skeletal structures. EN1993‐1‐1 [1] provides two design procedures of such members, one based on the interaction equations for the section resistance and the member buckling resistance, and the other one based on the so‐called General ...
Marian A. Gizejowski, Aleksander Kozlowski, Zbigniew Stachura   +2 more
openaire   +1 more source

Reassessment of the Lateral Torsional Buckling Resistance of I-Section Members: Uniform-Moment Studies

Journal of Structural Engineering, 2017
AbstractThe I-section member lateral torsional buckling (LTB) resistance equations of the unified provisions underlying the current AISC and AASHTO specifications are a fit to a large body of experimental test data. It has been observed that finite-element (FE) test simulations commonly predict smaller capacities than the AISC/AASHTO LTB equations ...
Lakshmi Subramanian, Donald W. White
openaire   +1 more source

Improving the seismic torsional behavior of plan-asymmetric, single-storey, concrete moment resisting buildings with fluid viscous dampers

Earthquake Engineering and Engineering Vibration, 2016
The optimal distribution of fluid viscous dampers (FVD) in controlling the seismic response of eccentric, single-storey, moment resisting concrete structures is investigated using the previously defined center of damping constant (CDC). For this purpose, a number of structural models with different one-way stiffness and strength eccentricities are ...
Fayaz Rahimzadeh Rofooei, Sahar Mohammadzadeh   +1 more
openaire   +1 more source

INELASTIC TORSIONAL BUCKLING OF SYMMETRIC 3D MOMENT-RESISTING FRAMES CAUSED BY COMBINED NONLINEARITY

Uneven plasticity and asymmetric loads can cause unanticipated torsion in a symmetric structure subjected to strong ground motion. Furthermore, the P-Delta effect can further amplify this type of torsion. However, it has been overlooked that inelastic torsional buckling is involved in accelerating the torsion caused by the P-Delta effect.
openaire   +1 more source

Effect of Torsional Irregularity on Seismic Performance of Steel Moment Resisting Frame Structures

2023
Gholami Hossein Abadi, Gazal, Varaee, Hesam   +1 more
openaire   +1 more source