Essential stressing state features of a large-curvature continuous steel box-girder bridge model revealed by modeling experimental data

Shi, Jun; Xiao, Hengheng; Zheng, Kaikai; Shen, Junjun; Zhou, Guangchun

doi:10.1016/j.tws.2019.106247

Cited by 16 publications

(7 citation statements)

References 16 publications

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“…As shown in Figure 12 a, the non-sample point shape functions N 1 -N 15 are obtained from the 15 control points in the established coordinate system, and the measured point strain data are used as the coefficients of control points ①–⑮. The calculation of the interpolation function can be found in the literature [ 2 , 28 , 32 ].…”

Section: Experimental Data Extended By the Non-sample Point Interpola...mentioning

confidence: 99%

“…Curved bridges are becoming increasingly popular due to their reasonable structural performance, aesthetic properties and high torsional stiffness, and are widely used to accommodate more complex routes and tight geometric site constraints [ 1 ]. Initially, steel structures were used for curved bridges and later, given the economic practicality, reinforced concrete structures were generally used for small-span curved bridges [ 2 ]. Later, the use of prestressing gave the advantages of large spans, large cross-sections, low self-weight, good performance, durability and high torsional stiffness of the box girders.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of The Working Performance of Large Curvature Prestressed Concrete Box Girder Bridges

et al. 2022

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Based on numerical shape functions and the structural stressing state theory, the mechanical properties of the curved prestressed concrete box girder (CPCBG) bridge model under different loading cases are presented. First, the generalized strain energy density (GSED) obtained from the measured strain data is used to represent the stressing state pattern of the structure; then, the stressing state of the concrete section is analyzed by plotting the strain and stress fields of the bridge model. The stressing state pattern and strain fields of the CPCBG are shown to reveal its mechanical properties. In addition, the measured concrete strain data are interpolated by the non-sample point interpolation (NPI) method. The strain and stress fields of the bridge model have been plotted to analyze the stressing state of the concrete cross-section. The internal forces in the concrete sections are calculated by using interpolated strains. Finally, the torsional effects are simulated by measuring the displacements to show the torsional behavior of the cross-section. The analysis and comparison of the internal force and strain fields reveal the common and different mechanical properties of the bridge model. The results of the analysis of the curved bridge model provide a reference for the future rational design of bridge projects.

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Section: Experimental Data Extended By the Non-sample Point Interpola...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis of The Working Performance of Large Curvature Prestressed Concrete Box Girder Bridges

et al. 2022

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“…The above problems are common in structural engineering research. Zhou [16][17][18][19][20][21][22][23][24][25][26] deeply considered the above problems and challenged the uncertainty in the structural analysis process. Zhou emphasized that structural failure is an evolutionary process with a definite starting point, and there are apparent mutation laws and interaction laws between elements in the evolutionary process.…”

Section: Classical Constitutive Modelmentioning

confidence: 99%

“…The failure starting point of a structure, i.e., the moment when the stressing state of a structure changes from a steady state to an unsteady state, is more valuable for structural analysis and design. The general damage laws revealed based on the damage starting point of a structure have been: statically loaded steel nodes [17]; hysterically loaded reinforced masonry shear walls [18,19]; steel frames [20]; steel pipe concrete columns [21]; concrete filled steel pipe arches [22,23]; concrete filled steel pipe arch bridges [24]; continuous curved box girder bridges [25]; space mesh shells [26] and other structures; more than a dozen structures have been verified under different working conditions.…”

Section: Classical Constitutive Modelmentioning

confidence: 99%

Stressing State Analysis of SRC Column with Modeling Test and Finite Element Model Data

2022

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This paper reveals the failure characteristic points of the spiral reinforced column during the damage process by modeling and analyzing the stressing state of the column with the test and finite element output data. At the same time, the structural stressing state theory and the correlation modeling analysis method’s applicability to spiral reinforced concrete columns are verified. First, a finite element model was established based on the literature’s spiral reinforced concrete column tests. Then, correlation modeling was performed on the test strain data to obtain correlation characteristic pairs (mode-characteristic parameters), and stressing state modeling was performed on the internal energy and element strain energy data from the finite element model to obtain stressing state characteristic pairs. The slope increment criterion is applied to the obtained stressing state characteristic parameter curves to reveal the characteristic point Q, defined as the failure starting point. The reasonableness of the failure starting point is further verified by observing the cloud diagram of the finite element model in the vicinity of the characteristic point Q. In general, the correlation modeling method proposed in this paper can provide a new reference for structural stressing state analysis. In addition, the failure starting point of spiral reinforced concrete columns revealed in this paper can be used as a design reference.

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“…Moreover, structural stressing state modeling analysis has revealed its deterministic failure starting point and an elasto-plastic branching point in more than a dozen different working conditions and structures. These include steel nodes [ 9 ], reinforced masonry shear walls [ 10 , 11 ], steel frames [ 12 ], stainless steel tubular concrete columns [ 13 ], spiral reinforcement concrete columns [ 14 ], steel tube concrete arches [ 15 , 16 ], steel tube concrete arch bridges [ 17 ], continuous curved box girder bridges [ 18 ], and space mesh shells [ 19 ]. Other structures under static conditions, hysteresis conditions, and simulated shaking table conditions have revealed the deterministic failure starting points and elastoplastic branch points.…”

Section: Introductionmentioning

confidence: 99%

Research on the General Failure Law of a CTRC Column by Modeling FEM Output Data

2022

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In this paper, a finite element model (FEM) is developed based on a set of circular steel tube reinforced concrete (CTRC) columns with axial compression and eccentric compression tests. The stressing state characteristics of the FEM are modeled in the form of characteristic pairs (mode-characteristic parameters) based on the structural stressing state theory and the proposed correlation modeling method. The slope increasing criterion is applied to the correlation characteristic parameter curve to obtain the characteristic point Q where the CTRC stressing state undergoes a qualitative change, and the characteristic point Q is defined as the new failure load point of the CTRC column. By selecting the element strain energy density at different locations of the FEM for correlation stressing state modeling and dividing the correlation stressing state sub-modes (concrete, steel tube, vertical reinforcement, and stirrup reinforcement), the structural stressing state theory and the rationality of the proposed correlation stressing state modeling method are verified. In addition, the certainty and reasonableness of the failure load points of the CTRC columns are revealed and verified.

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Essential stressing state features of a large-curvature continuous steel box-girder bridge model revealed by modeling experimental data

Cited by 16 publications

References 16 publications

Analysis of The Working Performance of Large Curvature Prestressed Concrete Box Girder Bridges

Analysis of The Working Performance of Large Curvature Prestressed Concrete Box Girder Bridges

Stressing State Analysis of SRC Column with Modeling Test and Finite Element Model Data

Research on the General Failure Law of a CTRC Column by Modeling FEM Output Data

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