Long-Term Behavior of Composite Beams under Positive and Negative Bending. II: Analytical Study

Fan, Jian‐Sheng; Nie, Xin; Li, Quan; Li, Quanwang

doi:10.1061/(asce)st.1943-541x.0000176

Cited by 26 publications

(8 citation statements)

References 14 publications

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“…One example is the fatigue analysis [8,9]. In addition, the tension stiffening effect, which causes a movement up the axis of inertia of a fully cracked support section of the composite beam in the fourth class, may reduce the reliability of the structure by changing the stress system in the web and the problems with the stability of the slender web.…”

Section: Results Of Deflections (Displacement)mentioning

confidence: 99%

Experimental and numerical studies of continuous composite beams taking into consideration slab cracking

Śledziewski¹

2016

EiN

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IntroductionSpecial requirements with regard to the theory of composite structures and their creative shaping make them one of the most interesting solutions for load-carrying structures in the construction technology. The constituent parts of the cross section are made of materials with different Young's moduli, which interact with each other through the use of fasteners. These elements are joined to maximise both their strength properties and operating characteristics with respect to their location within the feature.The greatest benefits are currently visible in the application of steel-concrete composite structures [24]. These are mainly used in bridge construction but are also used in other areas of the construction industry, especially in the industrial construction [16].The importance of the issue of cracking in the context of continuous composite structures is still a topic of discussion. Although the structure safety is not compromised in any way, its operating lifespan is significantly affected. Non-structural cracks can cause damage to insulation and -in the long -cause corrosion of the reinforcement, as well. Therefore, it must be remembered that the operating lifespan of the structure is one of the basic assumptions in the design process and it significantly affects the adopted design solutions and materials [26]. The feature's operating lifespan is maintained when the structure fulfils its function within a given time both for its load-bearing capacity (ultimate limit states) and serviceability (limit states related to the reduction of cracks, stresses and deflections). The correct structure design ensures that it is fit for purpose for at least the period of expected operating lifespan. The requirements for the bridge structure operating lifespan are particularly high, though. In accordance with [26], bridges are classified as the S5 design category (class), which means the approximate design lifetime of at least 100 years.Nowadays, in order to meet the increasingly stringent operating lifespan criteria, the design phase for composite bridges should take into account non-structural concrete cracking and the change of its stiffness between the cracks Eksploatacja i NiEzawodNosc -MaiNtENaNcE aNd REliability Vol.18, No. 4, 2016 579 sciENcE aNd tEchNology 579[28] in the ultimate limit state and serviceability limit state. Concrete cracking affects the stiffness of the composite section and can cause an overload of the steel section. The change in the stiffness causes redistribution of excessive bending moments along the length of the continuous beam. The problem of the behaviour of the composite structure with the cracked concrete slab is complicated and not fully explored. For this reason, the stiffness of the concrete in tension in often overlooked in the design of civil engineering structures. This approach leads to an irrational assessment of the load-bearing capacity and serviceability of the composite structure, which causes a reduction in the lifetime of the feature [36].This problem also occur...

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Section: Results Of Deflections (Displacement)mentioning

confidence: 99%

Experimental and numerical studies of continuous composite beams taking into consideration slab cracking

Śledziewski¹

2016

EiN

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“…[47,[103][104][105][106]. A time-dependent model for the shear connection was proposed in [47,105] to capture the creep response in composite floor beams due to sustained external loads, while the first long-term push-out tests with solid and composite slabs were reported in [47,105,107].…”

Section: Time-dependent Modelling Of Composite Beamsmentioning

confidence: 99%

State of the art on the time-dependent behaviour of composite steel–concrete structures

Ranzi

Leoni

Zandonini

2013

Journal of Constructional Steel Research

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“…A series of experiments [37][38][39] confirmed that the long-term behaviour of SCC beams under partial shear connection was different from that observed in full shear connection. In addition, some studies [40][41][42] specifically focused on the long-term behaviour of SCC beams under negative bending moments. Drawing on the experimental outcomes, several finite element models [43][44][45][46][47] and analytical models [48][49][50][51][52][53] for the time-dependent behaviour of SCC beams were proposed.…”

Section: Time Dependent Behaviour Of Concretementioning

confidence: 99%

A review on long‐term behaviour of steel‐concrete composite structures

Wang,

Khan,

et al. 2023

ce papers

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The exceptional structural performance of steel‐concrete composite structures, which harness the advantages of both steel and concrete, has garnered considerable attention. Following a summary of the fundamental time‐dependent characteristics of concrete, this paper reviews the existing studies about the long‐term behaviour of various steel‐concrete composite components, including slabs, beams, columns and walls. For composite slabs, nonuniform shrinkage occurs along the thickness direction. The long‐term behaviour of composite beams is significantly affected by the degree of shear connection. While the creep and shrinkage effects of composite columns are substantially reduced in comparison to reinforced concrete columns, stress redistribution may cause yielding or buckling of the steel tube. However, there is currently limited research available on the long‐term behaviour of composite walls with profiled steel plates, and no studies have been conducted on composite walls made of double‐skinned flat steel faceplates infilled with concrete. This lack of knowledge may lead to design uncertainties for composite coupled wall‐frame structures. To bridge this gap, the authors are currently conducting a corresponding long‐term experimental program.

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Long-Term Behavior of Composite Beams under Positive and Negative Bending. II: Analytical Study

Cited by 26 publications

References 14 publications

Experimental and numerical studies of continuous composite beams taking into consideration slab cracking

Experimental and numerical studies of continuous composite beams taking into consideration slab cracking

State of the art on the time-dependent behaviour of composite steel–concrete structures

A review on long‐term behaviour of steel‐concrete composite structures

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