The importance of panel zone shear strength on seismic behavior of improved slotted-web beam connections

2017 ◽  
Vol 17 (1) ◽  
pp. 307-318 ◽  
Author(s):  
Mohammad Reza Adlparvar ◽  
Mohammad Ghasem Vetr ◽  
Farshad Ghaffari
Keyword(s):  
Shear Strength ◽  
Seismic Behavior ◽  
Panel Zone

Shear strength of panel zone in beam-to-column connections

2012 ◽  
Vol 71 ◽  
pp. 129-142 ◽  
Author(s):  
Giuseppe Brandonisio ◽  
Antonio De Luca ◽  
Elena Mele
Keyword(s):  
Shear Strength ◽  
Panel Zone

Nonlinear Analysis of CFT Composite Frame with Floor Slab

2011 ◽  
Vol 243-249 ◽  
pp. 1168-1172
Author(s):  
Yuan Huang ◽  
Wei Jian Yi ◽  
Jian Guo Nie
Keyword(s):  
Seismic Behavior ◽  
Fe Analysis ◽  
Steel Beams ◽  
Plastic Behavior ◽  
Floor Slab ◽  
Panel Zone ◽  
Composite Frames ◽  
Composite Frame ◽  
Load Analysis ◽  
Analysis Models

Nonlinear finite element (FE) analysis models of CFT composite frames with floor slab were established by Msc.Marc to investigate the seismic behavior of composite frames. A number of material nonlinearities and contact nonlinearities, as well as geometry nonlinearities, were taken into account, including elastoplastic properties of steel and concrete, concrete cracking and tension stiffening, steel fracture, interface slip between concrete slabs and steel beams, P-D effects etc. The elasto-plastic behavior, as well as fracture and post-fracture behavior, of the FE analysis models agreed well with those of the test specimens. The beam and panel zone deformation of the analysis models is also in good agreement with that of the test specimen. It is concluded that FE analysis is useful not only for monotonic load analysis but also for cyclic load analysis. It is a helpful tool to expand the information on seismic behavior of composite frame.

Pseudo-Dynamic and Quasi-Static Testing of an Irregular Steel Concrete Composite Frame with Wing Walls

2016 ◽  
Vol 16 (02) ◽  
pp. 1450095 ◽  
Author(s):  
Yongtao Bai ◽  
Guoliang Bai
Keyword(s):  
Reinforced Concrete ◽  
Seismic Behavior ◽  
Power Plants ◽  
Shear Failure ◽  
Thermal Power ◽  
Moment Frame ◽  
Static Tests ◽  
Panel Zone ◽  
Short Columns ◽  
Wing Walls

This paper presents a series of pseudo-dynamic tests (PDTs) and quasi-static tests (QSTs) on a dual wing-walled frame system, represented here by a 1/7-scaled composite moment frame with steel reinforced concrete (SRC) columns and reinforced concrete (RC) wing walls. Special characteristics of this scaled system are irregular story layout, strong-beam weak-column mechanism and large axial load. A series of scaled El-Centro (NS) waves were used as the input ground motion for the PDTs, the results of which showed that the seismic behavior was significantly improved by the RC wing walls. With the strong-beam weak-column connections, severe damages sustained by the longitudinal wing walls (LWW) prevented the potential collapse of column, and the transverse wing wall (TWW) efficiently avoided the fragile shear failure of short columns and panel zone of beam-column joints. The failure mechanisms were identified indicating that wing walls improved the ductility for the bare frame. This study provides a solid experimental support on the evaluation of seismic behavior of irregular SRC frames with RC wing walls, which could be applied in the main factory buildings of thermal power plants (TPP).

Effects of panel zone yielding on seismic behavior of welded-flange-plate connections

2016 ◽  
Vol 14 (10) ◽  
pp. 2805-2825 ◽  
Author(s):  
Amir Homayoon Kosarieh ◽  
Fakhreddin Danesh
Keyword(s):  
Seismic Behavior ◽  
Panel Zone ◽  
Plate Connections

Research on seismic behavior and shear strength of SRHC frame columns

2017 ◽  
Vol 16 (2) ◽  
pp. 349-364 ◽  
Author(s):  
Shansuo Zheng ◽  
Qing Qin ◽  
Yixin Zhang ◽  
Liang Zhang ◽  
Wei Yang
Keyword(s):  
Shear Strength ◽  
Seismic Behavior

Seismic Design Factors for Steel Moment Frames with Masonry Infills: Part 1

2012 ◽  
Vol 28 (3) ◽  
pp. 1189-1204 ◽  
Author(s):  
Shiv Shanker Ravichandran ◽  
Richard E. Klingner
Keyword(s):  
Shear Strength ◽  
Seismic Behavior ◽  
Pushover Analysis ◽  
Moment Frames ◽  
Steel Moment Frames ◽  
Moment Frame ◽  
Steel Moment Frame ◽  
Masonry Infills ◽  
Open Ground ◽  
Shear Failures

In this two-part work, seismic behavior and design of steel moment frames with masonry infills are investigated systematically. In this first part, the “infill strength ratio” (the ratio of the story shear strength of infills to the story shear strength of the bare frame) is shown to have a fundamental effect on the seismic behavior of an infilled frame. This fundamental effect is demonstrated using pushover analysis of an example steel moment frame with masonry infills in uniformly infilled and open ground story configurations. In general, infill strength ratios greater than about 0.35 are associated with progressive deterioration of seismic performance, leading to story mechanisms concentrated in the lower stories. Greater infill strength ratios can also lead to local shear failures in frame members.

scholarly journals Seismic Behavior of Stone Masonry Joints with ECC as a Filling Material

Materials ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 6671
Author(s):  
Wei Hou ◽  
Xinghua Dai ◽  
Zheyu Yang ◽  
Hanhuang Huang ◽  
Xiaoli Wang ◽  
...  
Keyword(s):  
Shear Strength ◽  
Seismic Behavior ◽  
Failure Process ◽  
Deformation Energy ◽  
Stone Masonry ◽  
Partial Substitution ◽  
Interface Debonding ◽  
Filling Material ◽  
Test Results ◽  
Residual Shear Strength

This paper investigates the seismic behavior of novel stone masonry joints using ductile engineered cementitious composite (ECC) as a substitute for ordinary mortar. Ten stone masonry joints with different types of mortar/ECC were tested under axial and cyclic loads. The filling materials of mortar joints tested included ordinary mortar, polymer mortar, ECC, and composite mortar with two combination proportions of ECC and ordinary mortar. The test results indicated that ECC specimens exhibited a more stable hysteretic response as well as an improvement in strength, deformation, energy dissipation, and strength degradation. The ECC mortar joints maintained integrity during the entire loading process due to the “self-confinement” effect of ECC. A partial substitution of mortar with ECC could provide effective reinforcement and confinement to prevent mortar failure and peeling, thereby allowing such specimens to approach the seismic performance of ECC specimens. Based on the trend of shear strength variations, a corresponding failure process is defined for ECC/mortar joints under cyclic and axial compressive loads, including four distinct stages: linear elastic, crack-developing stage, interface debonding, and friction sliding. New equations are proposed for predicting the shear strength and residual shear strength of the ECC/mortar joints on the basis of the test results, which are validated in the composite mortar specimens.

scholarly journals STUDY ON SEISMIC BEHAVIOR OF STEEL BEAM-TO-COLUMN PANEL ZONES

2020 ◽  
Vol 1 (1) ◽  
pp. 13-15
Author(s):  
Tran Tuan Nam
Keyword(s):  
Seismic Behavior ◽  
The Other ◽  
Steel Beam ◽  
Plastic Behavior ◽  
Moment Frame ◽  
Steel Moment Frame ◽  
Building Collapse ◽  
Panel Zone ◽  
Lateral Forces ◽  
Steel Building

Beam-to-column panel zone behavior in a steel moment-frame is characterized by the surrounding acting forces and its rotating deformation. When subjected to lateral forces, panel zones are deformed in a parallelogram pattern that one side of its diagonal direction is in tension whereas the other side is in compression. Moreover, right angles at the joints between the beam, column ends and the panel remains right angles. Shear strain causes the panel to rotate at a finite angle characterizing its rotating deformation. Based on experimental results from a full scale steel building collapse test, this paper discusses the elastic and elasto-plastic behavior of some typical panel zones.

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