Plastic-zone advanced analysis – Formulation including semi-rigid connection

Alvarenga, Arthur Ribeiro de

doi:10.1016/j.engstruct.2020.110435

Cited by 10 publications

(4 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Nevertheless, it is revealed here, through SO, that the ceiling beams are also important for increasing the lateral stiffness of unbraced modular buildings. At this junction, it should be pointed out that although the MRF benchmark structure requires less structural steel in meeting a particular frequency, the achievement of rigid connection for MRF structures in practice requires an extensive amount of fabrication onsite and, consequently, can be relatively expensive [62]. Furthermore, it should be reemphasised that the rotational stiffness of the so-called semi-rigid connection here corresponds to the classification boundary between the "rigid" and "semi-rigid" connections for unbraced MRFs in Eurocode 3.…”

Section: Self-weight Comparison With Optimally Designed Mrfsmentioning

confidence: 99%

Optimality criteria-based minimum-weight design method for modular building systems subjected to generalised stiffness constraints: A comparative study

Wang

Tsavdaridis

2022

Engineering Structures

View full text Add to dashboard Cite

Section: Self-weight Comparison With Optimally Designed Mrfsmentioning

confidence: 99%

Optimality criteria-based minimum-weight design method for modular building systems subjected to generalised stiffness constraints: A comparative study

Wang

Tsavdaridis

2022

Engineering Structures

View full text Add to dashboard Cite

“…In fact, many studies [6][7][8] pointed out the economic benefits that can result from a design considering the real behaviour of beam-to-column joints. De Alvarenga (2020) [9] suggested new numerical formulation that integrates the behaviour of the plastic zone finite element model for semi-rigid steel frames. However, Astaneh and Nader (1992) and Mazzolani and Piluso (2012) [10,11] have provided some attempts to codify the semi rigidity for seismic steel structures, and the evidence of the positive effect of semi-rigid joints in such structures is continuously increasing.…”

Section: Introductionmentioning

confidence: 99%

Seismic Fragility Curves for Performance of Semi-rigid Connections of Steel Frames

2021

View full text Add to dashboard Cite

A steel frame with a semi-rigid connection is one of the most widely used structural systems in modern construction. These systems are cheap to make, require less time to construct and offer the highest quality and reliable construction quality without the need for highly skilled workers. However, these systems show greater natural periods compared to their perfectly rigid frame counterparts. This causes the building to attract low loads during earthquakes. In this research study, the seismic performance of steel frames with semi-rigid joints is evaluated. Three connections with capacities of 50, 70 and 100% of the beam’s plastic moment are studied and examined. The seismic performance of these frames is determined by a non-linear static pushover analysis and an incremental dynamic analysis leading finally to the fragility curves which are developed. The results show that a decrease in the connection capacity increases the probability of reaching or exceeding a particular damage limit state in the frames is found. Doi: 10.28991/cej-2021-03091714 Full Text: PDF

show abstract

“…e performance of base-isolated steel structures having special moment frames was assessed by Rezaei Rad and Banazadeh [16]. Alvarenga [17] proposed a new numerical formulation that includes the behavior of the semirigid connection into plastic-zone finite element model for steel plane frames.…”

Section: Introductionmentioning

confidence: 99%

Numerical-Computational Model for Nonlinear Analysis of Frames with Semirigid Connection

Souza

Vanalli

Luz

2020

Mathematical Problems in Engineering

View full text Add to dashboard Cite

A numerical-computational model for static analysis of plane frames with semirigid connections and geometric nonlinear behavior is presented. The set of nonlinear equations governing the structural system is solved by the Potra–Pták method in an incremental procedure, with order of cubic convergence, combined with the linear arc-length path-following technique. The algorithm pseudo-code is presented, and the finite element corotational method is used for the discretization of the structures. The equilibrium paths with load and displacement limit points are obtained. The semirigidity is simulated by a linear connection element of null length, which considers the axial, tangential, and rotational stiffness. Nonlinear analyses of 2D frame structures are carried out with the free Scilab program. The results show that the Potra–Pták procedure can decrease the number of iterations and the computing time in comparison with the standard and modified Newton–Raphson iterative schemes. Also, the simulations show that the connection flexibility has a strong influence on the nonlinear behavior and stability of the structural systems.

show abstract

Plastic-zone advanced analysis – Formulation including semi-rigid connection

Cited by 10 publications

References 17 publications

Optimality criteria-based minimum-weight design method for modular building systems subjected to generalised stiffness constraints: A comparative study

Optimality criteria-based minimum-weight design method for modular building systems subjected to generalised stiffness constraints: A comparative study

Seismic Fragility Curves for Performance of Semi-rigid Connections of Steel Frames

Numerical-Computational Model for Nonlinear Analysis of Frames with Semirigid Connection

Contact Info

Product

Resources

About