Baseplate column connection under bending: Experimental and numerical study

Targowski, R.; Lamblin, D.; Guerlement, G.

doi:10.1016/0143-974x(93)90005-d

Cited by 13 publications

(5 citation statements)

References 3 publications

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“…In this excellent monograph, offering a rich bibliography on theoretical as well as experimental studies dealing with the static and cyclic response of column bases, one can also find a comprehensive sensitivity study, indicating that the parameters having the most significant influence on the connection behavior are the base plate thickness, the dimensions (length and diameter) of the bolts and the quality of the concrete. Similar results have been also reported in earlier and more recent relevant investigations [6,7,8,9]. An extension -improvement of the aforementioned complex model has been recently developed [10], by proposing an efficient mechanical model on the basis of the component method, described in Annex J of Eurocode 3 [11], which nevertheless requires a rather long and iterative calculation procedure in order to accurately simulate the non-linear response of column bases from the very first loading steps up to failure.…”

Section: Introductionsupporting

confidence: 79%

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Equilibrium based evaluation of stress distribution under steel column base plates. I: Governing Equations

Sophianopoulos

Michaltsos

2005

EJSE

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The present paper, being the first part of two relevant studies, deals with the evaluation of the stress distribution under steel base-plate connections, acted upon statically by axial forces and bending moments. The whole approach is formulated on the basis of the proper equilibrium equations that are valid for both elastic and plastic plate behaviour adopting a nonlinear stress distribution function under the base plate of catenary type, depending on only one parameter. Taking into account the compatibility and geometric conditions valid for all the connection components, the aforementioned equations are fully assessed, considering the base-plate connection as semi-rigid. Numerical results, parametric studies and comparison with existing relevant investigations will be demonstrated in the companion paper, being the product of advances symbolic computations of the theoretical findings of the present work.

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Section: Introductionsupporting

confidence: 79%

“…with E c and ν c being the modulus of elasticity and Poisson's ratio for the concrete respectively. Equation(7) possesses the following general integral…”

mentioning

confidence: 99%

Equilibrium based evaluation of stress distribution under steel column base plates. I: Governing Equations

Sophianopoulos

Michaltsos

2005

EJSE

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“…Results of the rotational stiffness and the concepts can be used in base plates designing procedure. In addition to the aforementioned studies, some studies have been conducted on base plates and columns with various shapes such as hollow sections [11][12][13]. Moreover, several experiments and numerical investigations have been carried out to show the behavior of base plates [14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

A Numerical Investigation on Behavior of Column Base Plates with Different Configurations

Shafieifar

Khonsari

2018

CivileJournal

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Base plates are one of the most important types of connections in structures. Due to complicated steel-concrete interaction, simple assumptions of the stress distributions are usually employed for designing the connection. Simple assumptions of compressive stress distribution in concrete may accelerate the design procedure, but they may lead to overdesign results. In this study, six different types of base plates with different configuration were studied numerically using a commercial Finite Element (FE) software and the numerical model was calibrated with an experimental test. The models were subjected to a constant axial load and then a monotonic moment loading was applied. To investigate the effects of the axial load, several axial load level were considered for each configuration. As a result, moment-rotation curves of these base plates, including their rotational stiffness, in the absence and presence of the axial loads, were compared. Moreover, the stress distribution in the concrete was studied in the FE models. For all cases, the stress distribution in the concrete was semi-triangular with the maximum stress between the column flange and the edge of the plate. Based on numerical results, some concepts of simplified assumptions were proposed to find the stress distribution of the base plates. These assumptions are more realistic than current assumptions in structural specifications.

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“…The base connection between columns and foundation is one of the most important elements in steel frame structures and has a great influence on the entire structural behavior as it is recognized from analytical studies [1 ~ 5] and experimental investigations [6,7]. The nonlinearities that arise due to the particular behavior of the connections components make the problem of the analysis of these structures very difficult [8,9].…”

Section: Introductionmentioning

confidence: 99%

Seismic Response of Cable-Stayed Bridge Tower With Semi-Rigid Base Connection Modelling

Raheem

Shehata²

2006

JES. Journal of Engineering Sciences

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The column base connections exhibit unpredictable semi-rigid behavior due to the fact that their basic components including base plate, anchor bolts and concrete foundation, are made from different material types and transmitting acting forces through unilateral multi-body contact. To address this need, this study seeks to develop a quite general base connection modelling capable of accurately representing material and geometrical nonlinear behavior of base connection, and its implementation in a time domain finite element seismic analysis through an incremental-iterative procedure is presented. A representative problem of cable-stayed bridges tower subjected to strong ground motion is analyzed. The maximum bearing stress on the concrete foundation as well as the tension force per anchor bolt that necessary to design the anchorage system is computed. The seismic responses of the tower structure with physical model of the base connection are compared to those of rigid base model. The semi-rigid connection model yields more economical solutions than rigid base model.

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Baseplate column connection under bending: Experimental and numerical study

Cited by 13 publications

References 3 publications

Equilibrium based evaluation of stress distribution under steel column base plates. I: Governing Equations

Equilibrium based evaluation of stress distribution under steel column base plates. I: Governing Equations

A Numerical Investigation on Behavior of Column Base Plates with Different Configurations

Seismic Response of Cable-Stayed Bridge Tower With Semi-Rigid Base Connection Modelling

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