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Damage-constitutive model for seawater coral concrete using different stirrup confinements subjected

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 3,   Pages 429-447 doi: 10.1007/s11709-022-0913-2

Abstract: In this study, research on the compressive performance of coral aggregate concrete (CAC) confined usingSubsequently, the stress−strain curves of specimens subjected to axial loading were measured., respectively, and the lateral effective stress of the different stirrups was calculated based on thethe adopted stirrup ratio had a better strengthening effect than the different concrete grades, andmodel had a good correlation with the measured stress−strain curves.

Keywords： coral aggregate concrete     stress−strain curves     lateral effective stress     peak stress     axial−lateral    

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Risk-based probabilistic thermal-stress analysis of concrete arch dams

Narjes SOLTANI, Mohammad ALEMBAGHERI, Mohammad Houshmand KHANEGHAHI

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 5,   Pages 1007-1019 doi: 10.1007/s11709-019-0521-y

Abstract: defined as random variables, are associated with the most affecting structural (material) properties of concretenumerically modeled along with its foundation in three-dimensional space; the temperature and thermal stress

Keywords： arch dams     probabilistic analysis     thermal stress     sensitivity     reliability    

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Stress-strain relationship of concrete in freeze-thaw environment

ZOU Chaoying, ZHAO Juan, LIANG Feng

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 2,   Pages 184-188 doi: 10.1007/s11709-008-0029-3

Abstract: the number of freeze-thaw cycles being 0, 100, 150, 200, 250, and 300, were carried out on eighteen concreteAfterwards these frozen-thawed specimens were tested on monotonic axial load; stress-strain testing curvesFinally, stress-strain theoretical curvilinear equations and correlated parameters relating to the lossThese results provide great reference for further research on the behavior and the calculation model of concrete

Keywords： stress-strain theoretical     freeze-thaw     capacity     reference     eighteen concrete    

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On Some Important Problems About Concrete Dams

Zhu Bofang

Strategic Study of CAE 2006, Volume 8, Issue 7,   Pages 21-29

Abstract:

The number, the height and the size of concrete dams under construction in China are the biggest onesSome important problems about concrete dams are discussed in this paper: (1) The key technique for terminatingto dam. (3) Concrete mark based on 90 d or 180 d age is more appropriate for concrete dams than concreteclass based on 28 d age . (4) The safety factor for compressive stress for the specially heigh concretearch dam (higher than 200 m) is some what low in China (5) The equivalent stress in arch dams analysed

Keywords： concrete dam     cracks     concrete mark     safety factor for compressive stress     equivalent stress for finite element    

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Influence of freeze–thaw damage gradient on stress–strain relationship of stressed concrete

Frontiers of Structural and Civil Engineering   Pages 1326-1340 doi: 10.1007/s11709-023-0014-x

Abstract: Influence of freeze–thaw damage gradient on stress–strain relationship of stressed concrete

Keywords： strain relationship concrete    

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Field test on temperature field and thermal stress for prestressed concrete box-girder bridge

Baoguo CHEN, Rui DING, Junjie ZHENG, Shibiao ZHANG

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 2,   Pages 158-164 doi: 10.1007/s11709-009-0002-9

Abstract: test was conducted to investigate the distribution of temperature field and the variation of thermal stressfor a prestressed concrete (PC) box-girder bridge.The peak value of hydration heat temperature increases with the increasing casting temperature of concreteAccording to field tests, the thermal stress incurred by hydration heat may induce temperature cracksFurthermore, the nonlinear distribution of temperature gradient and the fluctuation of thermal stress

Keywords： box-girder bridge     field test     hydration heat     temperature field     temperature gradient     thermal stress    

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Stress-strain relationship of recycled self-compacting concrete filled steel tubular column subjected

Feng YU, Cheng QIN, Shilong WANG, Junjie JIANG, Yuan FANG

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 3,   Pages 760-772 doi: 10.1007/s11709-020-0618-3

Abstract: As a typical compression member, the concrete-filled steel tube has been widely used in civil engineeringHowever, little research on recycled self-compacting concrete filled circular steel tubular (RSCCFCSTIn this study, 21 specimens were designed and experimental studies on the stress-strain relationshipThe corresponding stress-strain relationship curves were used to analyze the influence of concerned parametersThe experimental results show that the strain of the eccentric compression stress-strain curves increase

Keywords： concrete filled circular steel tubular columns     recycled self-compacting concrete     eccentric compression     recycled coarse aggregate replacement ratio     stress-strain relationship    

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Confinement properties of circular concrete columns wrapped with prefabricated textile-reinforced fineconcrete shells

Frontiers of Structural and Civil Engineering doi: 10.1007/s11709-023-0955-0

Abstract: This paper proposes an innovative column composed of a core column (including both reinforced concrete(RC) and plain concrete (PC) columns) and a prefabricated textile-reinforced fine concrete (TRC) shellTo study the confinement properties of TRC shells on this novel type of concrete column, 20 circularBased on the test results, an analytical model that can be used to calculate the stress–strain curvesof prefabricated TRC shell-confined concrete columns has been proposed.

Keywords： textile-reinforced fine concrete     prefabricated shell     confined concrete column     confinement properties     stress–strain relationship    

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Layout optimization of steel reinforcement in concrete structure using a truss-continuum model

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 5,   Pages 669-685 doi: 10.1007/s11709-023-0963-0

Abstract: bi-directional evolutionary structural optimization (M-BESO) method is proposed to control the level of tensile stressin concrete.sensitivity of steel in a concrete–steel composite is integrated with the average normal stress of aneighboring concrete.The area of ​​critical tensile stress in concrete yielded by the M-BESO is more than 40% lower than that

Keywords： bi-directional evolutionary structural optimization     steel-reinforced concrete     concrete stress     reinforcement    

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Chloride diffusion in concrete with carbonated recycled coarse aggregates under biaxial compression

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 4,   Pages 637-648 doi: 10.1007/s11709-023-0902-0

Abstract: Chloride attack on concrete structures is affected by the complex stress state inside concrete, and theEnhancing the chloride resistance of recycled concrete in a complex environment via carbonization facilitatesthe popularization and application of recycled concrete and alleviates the greenhouse effect.The results obtained demonstrate that the chloride ion diffusivity of recycled concrete first decreasesThe variation in the chloride ion diffusivity of the carbonized recycled aggregate concrete with the

Keywords： recycled concrete     carbonated recycled coarse aggregate     biaxial compression     chloride diffusion     stress    

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Shear assessment of compression flanges of structural concrete T-beams

Bj?rn SCHüTTE,Viktor SIGRIST

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 4,   Pages 354-361 doi: 10.1007/s11709-014-0082-z

Abstract: The general design procedure is based on a strut-and-tie (or a stress field) model which comprises spreadingAn advanced method for the analysis of webs in shear is the Generalized Stress Field Approach [ ].classical assumptions have to be adapted; in particular by considering the strain dependence of the concrete

Keywords： concrete structures     structural assessment     stress field analysis     shear    

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A time−space porosity computational model for concrete under sulfate attack

Frontiers of Structural and Civil Engineering doi: 10.1007/s11709-023-0985-7

Abstract: The deterioration of the microscopic pore structure of concrete under external sulfate attack (ESA) islittle effort has been invested in exploring the temporal and spatial development of the porosity of concreteIn addition, the expansion strain at the macro-scale is obtained using a stress analysis model of compositeThe proposed model can forecast and assess the porosity of concrete covers and provide a credible approachfor determining the residual life of concrete structures under ESA.

Keywords： expansion deformation     porosity     internal expansion stress     external sulfate attack     mechanical–chemical    

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Unified calculation method and its application in determining the uniaxial mechanical properties of concrete

Faxing DING, Xiaoyong YING, Linchao ZHOU, Zhiwu YU

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 3,   Pages 381-393 doi: 10.1007/s11709-011-0118-6

Abstract: Optimized mathematical equations for the nonlinear stress-strain relationship of concrete, includingthe ascending and descending branches under uniaxial stress, are also established.The elastic modulus is almost constant throughout the elastic stage for the ascending branches of the stress-strainThe proposed stress-strain relationship of concrete was applied to the nonlinear finite element analysisanalytical results are in good agreement with the experiment results, indicating that the proposed stress-strain

Keywords： concrete     mechanical properties     stress-strain relationship     uniaxial stress     application    

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Behavior of concrete-filled double skin steel tubular columns with octagon section under axial compression

YANG Junjie, PENG Guojun, XU Hanyong

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 3,   Pages 205-210 doi: 10.1007/s11709-008-0035-5

Abstract: Based on some conclusions of two kinds of concrete-filled double skin steel tube (CFDSST) members withsubjected to axial compression are investigated, and some curves of load-strain of steel tubes and confined concreteBased on the proper stress-strain relationship, a couple of numerical analyses are made using the finite

Keywords： mathematical     numerical     compression     stress-strain relationship     straight    

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Calculation of Cohesive Stress Along the Fictitious Crack Zone in Concrete Materials

Xu Shilang,Wang Limin

Strategic Study of CAE 2002, Volume 4, Issue 5,   Pages 53-58

Abstract:

Nonlinear fracture behaviors of concrete materials are mainly caused by the cohesive stress alongBased upon concrete fracture properties and the analytical model of crack with cohesive forces, two simpleformulae concisely expressing the cohesive stress distribution are presented through analyzing characteristicsAs a result, using the test data of crack opening displacement, the cohesive stress distribution is determined

Keywords： concrete     crack opening displacement     fictitious crack cohesive force     algebra equations    

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Title Author Date Type Operation

Damage-constitutive model for seawater coral concrete using different stirrup confinements subjected

Journal Article

Risk-based probabilistic thermal-stress analysis of concrete arch dams

Narjes SOLTANI, Mohammad ALEMBAGHERI, Mohammad Houshmand KHANEGHAHI

Journal Article

Stress-strain relationship of concrete in freeze-thaw environment

ZOU Chaoying, ZHAO Juan, LIANG Feng

Journal Article

On Some Important Problems About Concrete Dams

Zhu Bofang

Journal Article

Influence of freeze–thaw damage gradient on stress–strain relationship of stressed concrete

Journal Article

Field test on temperature field and thermal stress for prestressed concrete box-girder bridge

Baoguo CHEN, Rui DING, Junjie ZHENG, Shibiao ZHANG

Journal Article

Stress-strain relationship of recycled self-compacting concrete filled steel tubular column subjected

Feng YU, Cheng QIN, Shilong WANG, Junjie JIANG, Yuan FANG

Journal Article

Confinement properties of circular concrete columns wrapped with prefabricated textile-reinforced fineconcrete shells

Journal Article

Layout optimization of steel reinforcement in concrete structure using a truss-continuum model

Journal Article

Chloride diffusion in concrete with carbonated recycled coarse aggregates under biaxial compression

Journal Article

Shear assessment of compression flanges of structural concrete T-beams

Bj?rn SCHüTTE,Viktor SIGRIST

Journal Article

A time−space porosity computational model for concrete under sulfate attack

Journal Article

Unified calculation method and its application in determining the uniaxial mechanical properties of concrete

Faxing DING, Xiaoyong YING, Linchao ZHOU, Zhiwu YU

Journal Article

Behavior of concrete-filled double skin steel tubular columns with octagon section under axial compression

YANG Junjie, PENG Guojun, XU Hanyong

Journal Article

Calculation of Cohesive Stress Along the Fictitious Crack Zone in Concrete Materials

Xu Shilang,Wang Limin

Journal Article