Ductility Factor Evaluation of Concrete Moment Frame Retrofitted by FRP Subjected to Seismic Loads

2020 ◽  
Vol 11 (6) ◽  
pp. 275
Author(s):  
Hussein Kareem Sultan ◽  
Ala'a Taha Mohammad ◽  
Ola Adel Qasim ◽  
Baydaa Hussain Maula ◽  
Hussein Y. Aziz
Keyword(s):  
Seismic Loads ◽  
Moment Frame ◽  
Ductility Factor ◽  
Factor Evaluation

Experimental Study on Improved Beam-to-Column Connections of Steel Moment Frame

2011 ◽  
Vol 243-249 ◽  
pp. 1335-1339
Author(s):  
Yan Xia Zhang ◽  
Lu Yao Wang ◽  
Fan Yang
Keyword(s):  
Experimental Study ◽  
Plastic Deformation ◽  
Failure Process ◽  
Deformation Capacity ◽  
Moment Frame ◽  
Steel Moment Frame ◽  
Ductility Factor ◽  
Dog Bone ◽  
Process Failure ◽  
The Face

Five different full-scale improved beam-to-column connections in steel moment frame were tested to study the failure process, failure mode, strength and plastic deformation capacity. The speciments consisted of one Welded-Bolted Widen Flange-Dog Bone Connection(SP1-1), one Welded Widen Flange-Dog Bone Connection(SP1-2),one T-Widen Flange Connection(SP2),one Beam Strengthen-Flange Splice Plate Reduced Connection(Reduced depth=0)(SP3-1),one Beam Strengthen-Flange Splice Plate Reduced Connection(Reduced depth=50mm)(SP3-2). The test showed that the five connections effectively moved the plastic hinges away from the face of the column so that end welding of beam would be effectively protected, the ultimate plastic rotation of connection exceeded 0.03rad, ductility factor is large than 4 and hysteresis loop is full .these connections provided good plastic deformation and energy dissipation.

Seismic Loads

2020 ◽  
Author(s):  
Finley A. Charney ◽  
Thomas F. Heausler ◽  
Justin D. Marshall
Keyword(s):  
Seismic Loads

STRAIN CHARACTERISTICS OF SOIL AND METHODS OF THEIR DETERMINATION

2018 ◽  
pp. 39-43
Author(s):  
K.S. Sultanov ◽  
P.V. Loginov ◽  
Z.R. Salikhova
Keyword(s):  
Dynamic Loading ◽  
Dynamic Compression ◽  
Loess Soil ◽  
Seismic Loads ◽  
Static Compression ◽  
Plastic Model ◽  
Laboratory Conditions ◽  
Coefficient Of Viscosity ◽  
Wave Problems

The method to define strain characteristics of soil under dynamic loading is proposed based on the results of experiments on dynamic compression of soils on the device for dynamic loading in laboratory conditions; the method allows solving wave problems with the statement similar to the statement of experiments. Using the proposed method, the modulus of dynamic and static compression, the modulus of unloading, the coefficient of viscosity of loess soil in the range of seismic loads are determined in accordance with elastic-visco-plastic model of soil developed by G.M.Lyakhov.

scholarly journals Seismic Performance of a Green Roof Structure

2021 ◽  
Vol 13 (8) ◽  
pp. 4278
Author(s):  
Svetlana Tam ◽  
Jenna Wong
Keyword(s):  
Green Roof ◽  
Time History ◽  
Green Roofs ◽  
Moment Frame ◽  
Steel Moment Frame ◽  
Roof Structure ◽  
Nonlinear Time History Analyses ◽  
Vegetated Roofs ◽  
Nonlinear Time History ◽  
The Impact

Sustainability addresses the need to reduce the structure’s impact on the environment but does not reduce the environment’s impact on the structure. To explore this relationship, this study focuses on quantifying the impact of green roofs or vegetated roofs on seismic responses such as story displacements, interstory drifts, and floor level accelerations. Using an archetype three-story steel moment frame, nonlinear time history analyses are conducted in OpenSees for a shallow and deep green roof using a suite of ground motions from various distances from the fault to identify key trends and sensitivities in response.

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