Cyclic tests of steel frames with composite lightweight infill walls

Hou, Hetao; Chou, Chung‐Che; Zhou, Jian; Wu, Mingliang; Qu, Bing; Ye, Haideng; Liu, Haining; Li, Jingjing

doi:10.12989/eas.2016.10.1.163

Cited by 12 publications

(3 citation statements)

References 11 publications

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“…The researchers found that preventing the fracturing of the shear connectors was necessary to improve the deformation capacity and ductility of the PSRCW structures. Hou et al [12] experimentally investigated five steel frame specimens with composite lightweight infill walls under cyclic loads and found that the lightweight concrete infill walls did not enhance the deformation capacity. Dall'Asta et al [13] developed a new method of designing steel frames with infill walls, in which energy dissipation was expected to occur in vertical steel frame elements.…”

Section: Introductionmentioning

confidence: 99%

Cyclic Responses of Two-Side-Connected Precast-Reinforced Concrete Infill Panels with Different Slit Types

Sun

Zhou

2021

Buildings

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This study aimed to study the cyclic behavior of two-side-connected precast-reinforced concrete infill panel (RCIP). A total of four RCIP specimens with different slit types and height-to-span ratios modeled at a one-third scale were tested subjected to cyclic lateral loads. The failure mode, hysteretic behavior, lateral strength, stiffness degradation, ductility, and energy dissipation capacity of each RCIP specimen were determined and analyzed. The specimens experienced a similar damage process, which involved concrete cracking, steel rebar yielding, concrete crushing, and plastic hinge formation. All the specimens showed pinched hysteretic curves, resulting in a small energy dissipation capacity and a maximum equivalent viscous damping ratio lower than 0.2. The specimens with penetrated slits experienced ductile failure, in which flexural hinges developed at both slit wall ends. The application of penetrated slits decreased the initial stiffness and lateral load-bearing capacity of the RC panel but increased the deformation capacity, the average ultimate drift ratios ranged from 1.41% to 1.99%, and the lowest average ductility ratio reached 2.48. The specimens with high-strength concrete resulted in a small slip no more than 1 mm between the RC panel and steel beam, and the channel shear connectors ensured that the RC infill panel developed a reliable assembly with the surrounding steel components. However, specimens with concealed vertical slits (CVSs) and concealed hollow slits (CHSs) achieved significantly higher lateral stiffness and lateral strength values. Generally, the specimens exhibited two-stage mechanical features. The concrete in the CVSs and CHSs was crushed, and flexural plastic hinges developed at both ends of the slit walls during the second stage. With increasing concrete strength, the initial lateral stiffness and lateral strength values of the RCIP specimens increased. With an increasing height-to-span ratio, the lateral stiffness and strength of the RC panels with slits decreased, but the failure mode remained unchanged.

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Section: Introductionmentioning

confidence: 99%

Cyclic Responses of Two-Side-Connected Precast-Reinforced Concrete Infill Panels with Different Slit Types

Sun

Zhou

2021

Buildings

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“…Tasnimi and Mohebkhah studied the in-plane seismic behaviour of steel frames infilled with clay brick masonry and openings [16]. Hou et al investigated the seismic behaviour of H-shaped steel frames with embedded lightweight infill wall panels [17,18]. Hashemi et al also conducted cyclic loading tests on steel frame infill walls and explored the influence of the walls on the behaviour of the main structure [19].…”

Section: Introductionmentioning

confidence: 99%

Seismic Behaviour of Concrete-Filled Steel Tube Frames With External Composite Wall Panels

2021

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This study investigated the seismic performance of concrete-filled steel tube frames with external wall panels via experimental research, numerical and theoretical analysis. Pseudo -static tests were first performed on five concrete-filled steel tube frame specimens. The failure mode, hysteretic performance, stiffness degradation, strength degradation, ductility coefficient, and energy dissipation capacity in the essential components of the structural system were analysed. Besides, finite element analysis was then used to simulate the seismic performance of the specimen, and the predicted results were compared with the test results. A parametric analysis was then conducted to study the influence of the strength of the materials and the relative size of the wall openings on the structural system of the specimens. Finally, the numerical and experimental results were compared. The following results were obtained based on the observed failure modes of the specimens: (1) each specimen exhibited good seismic performance and safety reliability, (2) external wall panels improved the elastic stiffness and ultimate bearing capacity of concrete-filled steel tube frames, (3) the four-point support method effectively controlled the wall-plate displacement mode, and (4) the degree of horizontal constraint at the upper support joint connectors significantly affected the wall-plate displacement mode.

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“…Wu et al [31] conducted an experimental study on steel frames with replaceable reinforced concrete walls. Other tests, such as tests on steel frames with fabricated autoclaved lightweight concrete panels, composite lightweight walls, and light-gauge steel stud walls, were conducted under horizontal low cyclic loading [32][33][34].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Seismic Behavior of Steel Frames with Infilled Recycled Aggregate Concrete Shear Walls

2019

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Experiments were performed on four specimens of steel frames with infilled recycled aggregate concrete shear walls (SFIRACSWs), one specimen of infilled ordinary concrete wall, and one pure-steel frame were conducted under horizontal low cyclic loading. The influence of the composite forms of steel frames and RACSWs (namely, infilled cast-in-place and infilled prefabricated) on the failure modes, transfer mechanisms of lateral force, bearing capacity, and ductility of SFIRACSWs is discussed, and the concrete type and connecting stiffness of beam–column joints (BCJs) are also considered. Test results showed that infilled RACSWs can increase the bearing capacity and lateral stiffness of SFIRACSWs. The connecting stiffness of BCJs slightly influences the seismic behavior of SFIRACSWs. In the infilled cast-in-place RACSWs, the wall cracks mainly extended along the diagonal direction. The bearing capacity was 2.4 times higher than in the pure steel frame, the initial stiffness was 4.3 times higher, and the displacement ductility factors were 2.44–2.69 times higher. In the infilled prefabricated RACSWs, the wall cracks mainly extended along the connection between the embedded T-shape connectors and walls before finally connecting along the horizontal direction. Moreover, shear failure occurred in the specimens. The bearing capacity was 1.44 times higher than that of the pure steel frame, the initial stiffness was 2.8 times higher, and the displacement ductility factors were 3.32–3.40 times higher. The degradation coefficients of the bearing capacity were more than 0.85, indicating that the specimens demonstrated a high safety reserve.

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Cyclic tests of steel frames with composite lightweight infill walls

Cited by 12 publications

References 11 publications

Cyclic Responses of Two-Side-Connected Precast-Reinforced Concrete Infill Panels with Different Slit Types

Cyclic Responses of Two-Side-Connected Precast-Reinforced Concrete Infill Panels with Different Slit Types

Seismic Behaviour of Concrete-Filled Steel Tube Frames With External Composite Wall Panels

Experimental Study on Seismic Behavior of Steel Frames with Infilled Recycled Aggregate Concrete Shear Walls

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