Seismic behavior of cold-formed steel high-strength foamed concrete shear walls with straw boards

Xu, Zhifeng; Chen, Zhongfan; Yang, Suhang

doi:10.1016/j.tws.2017.12.032

Cited by 44 publications

(9 citation statements)

References 21 publications

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“…To properly replace the masonry bricks, a sandwich-type of fabricated straw panel is advanced. With a low elastic modulus [19], straw panels own much lower stiffness compared with masonry bricks [20]. Due to the flexible tenon connection between straw panel and frame, a certain deformation is allowed under horizontal loads and actions.…”

Section: Fabricated Straw Brickmentioning

confidence: 99%

Research on the Seismic Performance of Straw Panel‐Infilled Concrete Frame by Shaking Table Test

Zhu

Bian

Zhou

2021

Advances in Civil Engineering

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Infill wall-frame interaction-induced damage and failure have been found in many previous earthquakes due to the inappropriate estimation of the stiffness of infill walls. It is a common knowledge of design philosophy that properly lowering the lateral stiffness of infill wall may significantly improve the seismic performances of concrete frames. Fabricated straw wall, a sandwich-type structure with tenon and groove, is proposed as a new type of lightweight and environment-friendly infill wall. The lateral stiffness is much lower than that of masonry infill wall. Shaking table tests were carried out for a concrete frame structure with fabricated straw wall, as well as for a frame with masonry infill wall for comparison. Results show that failure modes of them are different. Plastic hinges took place at the ends of beams in the frame with fabricated straw infill wall, different from the frame with masonry infill wall where the plastic hinges emerged at the ends of columns. Numerical analysis was conducted to verify and illustrate the failure mechanism. It indicates that the straw panel-infilled concrete frame well matches the design philosophy and presents better seismic performance.

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Section: Fabricated Straw Brickmentioning

confidence: 99%

Research on the Seismic Performance of Straw Panel‐Infilled Concrete Frame by Shaking Table Test

Zhu

Bian

Zhou

2021

Advances in Civil Engineering

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“…One was diaphragm effect failure of wall sheathings and the other was the buckling destruction of wall studs. To reduce CFS wall failure risk, researchers have proposed some improved measures, which mainly included increase of the number of screws (Javaheri–Tafti et al, 2014), decrease of wall sheathing through seams (Nithyadharan and Kalyanaraman, 2012), filling thermal insulation mortar (Liu et al, 2016; Yu et al, 2015), foamed concrete (Xu et al, 2018a; 2018b), lightweight concrete (Hegyi and Dunai, 2016; Wang et al, 2020a) and flue gas desulfurization gypsum (Wu et al, 2018). The above research works have revealed that the application of filling materials effectively improved the seismic performance and shear capacity of CFS walls.…”

Section: Introductionmentioning

confidence: 99%

Cold–formed thin–walled steel walls filled with phosphogypsum subjected to lateral cyclic loading: testing and analysis

Hu,

Zhou,

Huang

2024

Advances in Structural Engineering

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In order to improve the shear capacity and seismic performance of cold–formed thin–walled steel (CFS) walls, in this research, a novel CFS wall filled with phosphogypsum (PG) was developed. Taking PG filling area and covering the wall with sheathing as design parameters, four full–scale test specimens were designed and constructed. Failure mode and seismic performance indexes of each specimen were investigated by performing cyclic loading tests and the effect of PG filler on CFS wall seismic performance was evaluated. Research results showed that PG filler significantly improved the seismic performance and shear capacity of CFS walls. Importantly, the proposed wall presented a remarkable dual–mechanism of lateral force resistance, which was provided by PG filler and wall sheathings, respectively. In addition, analytical models were developed for the calculation of the shear capacity and lateral stiffness of the proposed walls, which presented high prediction accuracy.

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“…According to the findings of their investigations, the overall weight of the panels was decreased by more than 50%, while the hysteretic behavior of the wall, particularly its ductility and energy dissipation capacity, was diminished significantly. Pakizeh et al [7], Xu et al [8][9][10] and Ximei et al [11] discussed the cyclic behaviors of shear wall casting with high compressive strength lightweight concrete. It was concluded that the high compressive strength of lightweight concrete was finitely beneficial to improving the cyclic behaviors of composite wall systems.…”

Section: Introductionmentioning

confidence: 99%

Effects of Embedded Expanded Polystyrene Boards on the Hysteretic Behavior of Innovative Precast Braced Concrete Shear Walls

Tang,

2023

Buildings

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An innovative type of precast braced concrete shear (PBCS) wall has been tested and verified to have comparable shear resistances relative to conventional cast-in-place reinforced concrete (RC) shear walls. The triangular or rectangular embedded expanded polystyrene (EPS) boards in PBCS wall panels can not only considerably reduce concrete use but also reduce the structural weight. To understand the functions of EPS boards in more depth, this paper investigates the effects of the thickness ratio of different shapes of EPS on the hysteretic behaviors of PBCS walls with various shear span ratios (SSRs). The finite element (FE) models of PBCS walls based on the multi-layer shell element are developed and verified to be sufficiently accurate in comparison with the experimental results. The analysis results indicate that the bearing capacity, lateral stiffness and ductility of PBCS walls show a downward trend with the increase in the thickness ratio of EPS boards. The rectangular EPS board has a more pronounced effect on weight reduction as well as concrete use reduction compared to the triangular EPS board under the same thickness ratio. The formulations regarding the bearing capacity are developed and show good agreement with the numerical results. The thickness ratio limit for PBCS walls to satisfy the ductility requirement is addressed. This investigation not only provides insight into the cyclic behavior of PBCS walls with varied thickness ratios but also demonstrates the potential applicability of PBCS walls in precast concrete (PC) structures for both thermal insulation and earthquake resistance purposes.

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Seismic behavior of cold-formed steel high-strength foamed concrete shear walls with straw boards

Cited by 44 publications

References 21 publications

Research on the Seismic Performance of Straw Panel‐Infilled Concrete Frame by Shaking Table Test

Research on the Seismic Performance of Straw Panel‐Infilled Concrete Frame by Shaking Table Test

Cold–formed thin–walled steel walls filled with phosphogypsum subjected to lateral cyclic loading: testing and analysis

Effects of Embedded Expanded Polystyrene Boards on the Hysteretic Behavior of Innovative Precast Braced Concrete Shear Walls

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