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

Adlparvar, Mohammad Reza; Vetr, Mohammad Ghasem; Ghaffari, Farshad

doi:10.1007/s13296-015-0024-1

Cited by 5 publications

(5 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To verify the accuracy of the modelling performed in this paper, the slotted connection created by Adlparvar et al was examined in the laboratory [6], similar to Figure 11, which has been performed in finite element software according to the geometric details of Table 2. A simple anchor is assumed for the two ends of the column.…”

Section: Verification Of Finite Element Modellingmentioning

confidence: 99%

“…In addition, the length of the beam's web groove is 160 mm and the diameter of its end hole is 21 mm. Also, the model configuration in this paper is the same as in [6] with some modifications in implementing slotted connection in it. Since many models have been used for the response surface method, the Shell element has been used to make the calculations faster.…”

Section: Verification Of Finite Element Modellingmentioning

confidence: 99%

“…After the 1994 Northridge earthquake [1] and the connection failure in the weld zone of the beam-to-column connection [2], the researchers sought to transfer the location of the plastic joint at a suitable distance from the column face [3]. Two solutions were proposed as strengthening the beam-to-column connection area [4,5] or weakening the beam area to move the plastic joint into the beam [6]. e weakening of the beam was used by creating two grooves in the beam to transfer the plastic joint into the beam and reducing the tension and strain of beam-to-column welding area and the column panel area is used.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Nonlinear Seismic Performance Evaluation of Flexural Slotted Connection Using Endurance Time Method

Kolbadi

Piri

Keyhani

et al. 2020

Shock and Vibration

View full text Add to dashboard Cite

The equivalent statistical methods, spectral analysis, and time history analysis are usually offered in the steel structure design regulations. Among these methods, the third one is more accurate; however, it requires more time to align the accelerometers due to a large number of analyses. In the endurance time (ET) method, incremental acceleration functions gradually and uniformly increases over time while their linear and nonlinear response spectra are proportional to the mean of the real seismic spectrum. These functions are used as input functions to analyze the nonlinear time history of structures, and the performance of structures is evaluated based on the maximum length of time they can meet specified performance goals. A three-story steel bending frame with (slotted web) SW and (web unslotted flange) WUF connection is examined through the performance time method in performance-based design. This article aimed at evaluating the seismic performance of these connections in the bending frame through endurance time analysis to predict the structural response in the probabilistic evaluation of the seismic performance of the structures. It is found that the endurance time analysis is justified with the seismic performance of the connections with low computational cost and proper accuracy. The results of comparing both SW and WUF connections indicated that the SW connection prevents the connection welding area from being failed due to transferring the plastic joint into the beam and in an area away from the column face and causes less damage compared to the WUF connection.

show abstract

Section: Verification Of Finite Element Modellingmentioning

confidence: 99%

Section: Verification Of Finite Element Modellingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Nonlinear Seismic Performance Evaluation of Flexural Slotted Connection Using Endurance Time Method

Kolbadi

Piri

Keyhani

et al. 2020

Shock and Vibration

View full text Add to dashboard Cite

show abstract

“…Heavy damages have been reported due to the frequent and strong earthquakes such as Niigata (1934), Alaska (1964), Parkfield (1966), Imperial City (1979), Coalinga (1983), Northridge (1994), Cocalo (1999), and Beijing (2001) that some of them have been reported by Adlparvar et al [6], Mohammadi et al [7], and Ibarra and Krawinkler [8]. Concrete tanks are damaging greatly too.…”

Section: Introductionmentioning

confidence: 99%

Interactional Effect of the Influential Parameters on Seismic Behaviour of the Concrete Surface Tanks

Yasaghi

Fatahi

Alizadeh

2021

Shock and Vibration

View full text Add to dashboard Cite

Given to the importance of the tanks and their various applications in different industries, studying the seismic behaviour of these facilities is essential. In such structures, obtaining exact theoretical solution for the seismic behaviour of the tanks is very difficult due to the existence of the soil-structure interaction. In this study, seismic behaviour studying has been taken into account and in addition to considering three-dimensional model of finite element model of a surface rectangular tank and its beneath soil given to SSI and FSI effect, we have done required analysis and Drucker–Prager nonlinear model has been used to investigating more exactly to describe soil behaviour. Euler–Lagrange view with optional mesh displacement has been used for modelling tank-water interaction. According to the obtained results from this modelling, soil beneath the tank and soil-structure interaction affect highly on seismic behaviour of the surface tanks. Meanwhile, the response of the structure to the density changes and soil modulus of elasticity is more sensitive and changes in the coefficient of friction coefficient between the foundation surface and the soil and the internal friction angle do not have tangible effect on the response. The results reveal that the liquid containers response is more sensitive to the changes of the density and the soil modulus of elasticity more than friction coefficient between the surfaces and foundation and internal angle friction.

show abstract

“…In addition to the issues with the concrete slab, the shear deformation of the panel zone can also harm the strain of the lower flange of the beam, leading to excessive demand for tensile strain and causing the weld to fracture between the beam's lower flange and the column. For example, Adlparvar et al [16] studied the impact of panel zone shear strength on the seismic behavior of enhanced slotted-web beam connections, and their results indicated that high participation of the panel zone effect increased the likelihood of beam web weld fracture. Miri et al [17] also found that in frames with weak panel zones, the story drifts are more than the permitted rate according to design standards, and the story drifts could be reduced by reinforcing the panel zone.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Box-Strengthened Panel Zone on Steel Frame Seismic Performance

Lu,

Zhang,

Zhang

et al. 2023

Buildings

View full text Add to dashboard Cite

During the Northridge earthquake, extensive brittle failures on the weld zones of the beam bottom flanges in the rigidity connection of steel special moment frames (SMFs) were detected. One of the primary reasons is the high-tensile strain demand created at the beam bottom flange zones due to positive bending. The weak panel zone of the I-section column exhibits more shear deformation, which promotes and accelerates the brittle fracture of the beam bottom flange weld zones. A box-strengthened panel zone can minimize the shear deformation of the panel zone of the I-section column, which may also reduce the inter-story displacement of steel SMFs and enhance their seismic behavior. In order to investigate this fact, in this research we carried out a model test of a steel frame with a box-strengthened panel zone to examine SMFs’ seismic performance and inter-story displacement, as well as testing the contribution of panel zone shear deformation to inter-story drift. Numerical methods were then used to investigate the influence of the axial compression ratio and beam-to-column linear stiffness ratio on the effect of shear deformation on the box-strengthened panel zone. Design recommendations are given based on the research results.

show abstract

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

Cited by 5 publications

References 14 publications

Nonlinear Seismic Performance Evaluation of Flexural Slotted Connection Using Endurance Time Method

Nonlinear Seismic Performance Evaluation of Flexural Slotted Connection Using Endurance Time Method

Interactional Effect of the Influential Parameters on Seismic Behaviour of the Concrete Surface Tanks

The Influence of Box-Strengthened Panel Zone on Steel Frame Seismic Performance

Contact Info

Product

Resources

About