Structural Health Monitoring in Incrementally Launched Steel Bridges: Patch Loading Phenomena Modeling

Chacón, Rolando; Zorrilla, Rubén

doi:10.1016/j.autcon.2015.07.001

Cited by 8 publications

(4 citation statements)

References 40 publications

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“…Despite the advancements in the field [22][23][24][25], there is still a gap in the literature regarding the calibration and estimation of equivalent stiffness parameters for 2d models tailored explicitly for steel beams subjected to patch loading. This paper addresses this gap by presenting a methodology for calibrating an FE model and estimating the equivalent stiffness parameters of 2d models.…”

Section: Introductionmentioning

confidence: 99%

2d Models of Steel Beams under Patch Loading for Buckling Coefficient Assessment

Maiorana,

Aloisio,

Briseghella

2023

Advances in Civil Engineering

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This paper proposes an equivalent 2d model incorporating translational and rotational springs to simulate constraints in the stability analysis of steel plates under in-plane patch loading. The main objective is to develop an equivalent stability analysis of these plates by accurately calibrating the level of constraint provided by the stiffeners and flanges. The calibration involves determining the spring constants of a 2d equivalent plate model to achieve the same linear elastic critical load and buckled shape as a 3d model. The paper uses the buckling coefficient as the objective function to calibrate the translational and rotational springs. The ultimate goal is to effectively replicate the constraint conditions imposed by the flanges and vertical stiffeners within the structure. The proposed simplified method yields results that closely align with those obtained from the original 3d model, incorporating finite-rigidity restraints.

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Section: Introductionmentioning

confidence: 99%

2d Models of Steel Beams under Patch Loading for Buckling Coefficient Assessment

Maiorana,

Aloisio,

Briseghella

2023

Advances in Civil Engineering

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“…Most existing studies on bridge monitoring focus on the long term [11,12]. Only a few scholars have discussed the deformation monitoring in the construction process [13,14].…”

Section: Introductionmentioning

confidence: 99%

Comparative Analysis on Influencing Factors of Alignment Monitoring Between Continuous Rigid-frame Bridge and Continuous Girder Bridge

Wang¹

2019

I2M

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In this paper, finite-element models are created for a continuous rigid-frame (CRF) system and a continuous girder (CG) system with the same superstructure. Next, two indices were selected to measure the difficulty of alignment monitoring, namely, the cumulative displacement in cantilevering and the difference between the two sides of the closure gap (the cross-gap difference) in cumulative displacement. After that, the two models were utilized to analyze how design parameters, pre-tensioning sequence and closure sequence affect the alignment monitoring difficulty of the two types of bridges. The analysis shows that the CRF bridge was less affected by prestress force and closure sequence than the CG bridge. This means the pretensioning sequence has greater impacts on the cumulative displacement of the CRF bridge than the CG bridge. The reasons for the impacts were further analyzed, and the closure sequence was rationalized. The research findings shed important new light on the alignment monitoring of CRF bridges.

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“…Modern monitoring techniques in construction, which require that the construction mechanical analysis can be interrupted to update the model of the structure, are widely used in the servo control of construction processes (Chacón and Zorrilla, 2015; Luo et al, 2015; Sousa et al, 2013). For this reason, the EBD method cannot be used in the servo control of construction processes because of its one-time continuous calculation.…”

Section: Introductionmentioning

confidence: 99%

Improved step-by-step modeling method for analyzing the mechanical behavior of steel structures during construction

Gao

Luo

Xiang

et al. 2018

Advances in Structural Engineering

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The step-by-step modeling method considering nonlinear effects is an effective method for analyzing the mechanical behavior of steel structures during construction. However, two problems have limited the widespread application of the traditional step-by-step modeling method: the positioning of newly assembled members and the transformation of the stiffness matrix and the nodal load and displacement vectors between different stages of construction. In this article, a new concept of ''two moments of a construction stage'' (the initial and final moments of each construction stage) is proposed to improve the step-by-step modeling method. Based on this concept, an improved step-by-step modeling method, which considers the modified design configuration positioning principle for newly assembled members and provides a method for modifying the structural stiffness matrix at the initial moment of any construction stage, is proposed. A calculation program block based on the proposed method is compiled to analyze the mechanical behavior of a plane frame and a plane shallow arch during construction. The mechanical behavior of an engineering application, the connective corridor of Shanghai International Financial Centre, is also analyzed using the proposed method, and the calculated results are compared with the monitoring results. The numerical results show that the modified design configuration positioning principle is applicable for the positioning of newly assembled members and that the modification method for the structural stiffness matrix and the nodal load and displacement vectors at the initial moment of a construction stage efficiently solves the problem of their transformation between different stages of construction. The improved step-by-step modeling method proposed in this article is more valid and accurate than other methods for analyzing the mechanical behavior of steel structures during construction.

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Structural Health Monitoring in Incrementally Launched Steel Bridges: Patch Loading Phenomena Modeling

Cited by 8 publications

References 40 publications

2d Models of Steel Beams under Patch Loading for Buckling Coefficient Assessment

2d Models of Steel Beams under Patch Loading for Buckling Coefficient Assessment

Comparative Analysis on Influencing Factors of Alignment Monitoring Between Continuous Rigid-frame Bridge and Continuous Girder Bridge

Improved step-by-step modeling method for analyzing the mechanical behavior of steel structures during construction

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