Seismic behavior of concrete-filled double-skin steel tube/moment-resisting frames with beam-only-connected precast reinforced concrete shear walls

Hu, Yi; Jun-hai, Zhao; Zhang, Dong Fang; Chen, Yanxiong

doi:10.1016/j.acme.2019.04.009

Cited by 14 publications

(2 citation statements)

References 29 publications

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“…To avoid this phenomenon, beam‐only‐connected shear wall systems were proposed, which feature an alternative to the traditional type of shear walls through separating the horizontal load resisting system from the primary columns. Hu et al investigated the seismic behavior of beam‐only‐connected prefabricated reinforced concrete shear wall system, and the results showed that this system can enhance the structural horizontal stiffness and strength significantly. Shekastehband et al studied the seismic behavior of low yield strength (LYS) and high yield strength (HYS) steel plate shear walls connected to frame beams only using experimental and numerical methods.…”

Section: Introductionmentioning

confidence: 99%

Seismic performance assessment of new dry‐assembled prefabricated composite shear wall system with beam‐only connection

Wang

Zhang

Chen

2020

Structural Design Tall Build

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Summary Two types of prefabricated composite shear wall systems were proposed using modular and separated dry‐assembled ways, respectively. The seismic performance of four composite shear wall systems, two for the modular assembly way and two for the separated assembly way, was numerically evaluated including failure mode, loading and deformation capacities, hysteresis behavior, ductility, stiffness degradation, and energy dissipation. The nonlinear numerical simulations were conducted based on plastic‐damage constitutive laws for both concrete and steel materials using ABAQUS platform, which were further verified by the experimental investigations. The results showed that the mechanical performance of the modular assembly system is superior than that of the separated assembly system. The former exhibited good bearing and deformation capacities: The peak force is enhanced by 50% on average, the ultimate drift ratio reaches an average value of 3.7%, and the ductility coefficient has an average value of 10.5. As for the same assembly way, the prefabricated system with inner steel plate appeared better seismic properties compared to that with outer steel plate. Furthermore, the modular assembly system behaved prominent energy dissipation capacity with plentiful hysteresis loops. The equivalent damping ratio of this system reaches 15.93% at the drift ratio of 2%, which is the limit drift ratio for normal buildings in rare earthquakes.

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Section: Introductionmentioning

confidence: 99%

Seismic performance assessment of new dry‐assembled prefabricated composite shear wall system with beam‐only connection

Wang

Zhang

Chen

2020

Structural Design Tall Build

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“…Bolted connections, on the other hand, are designed under factory controlled settings and can be manufactured as a part of the modules prior to assembling, preserving quality and saving money. There have been studies on the lateral response of similar column-to-column bolted connections in seismic frames [21, 22, 23].…”

Section: Introductionmentioning

confidence: 99%

Seismic mitigation of steel modular building structures through innovative inter-modular connections

Sendanayake

Thambiratnam

Perera

et al. 2019

Heliyon

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Steel modular building structures are being increasingly adopted for a variety of building applications since their method of construction, despite being relatively new, offers many benefits over conventional constructional methods. Even though their behaviour under gravity (dead and live) loads is generally well understood, their response to lateral dynamic loads such as seismic and wind loads, is relatively less known. Due to their unique structural detailing, their structural response and failure patterns under lateral dynamic loading can vary considerably from that exhibited by conventional structures. Limited research has shown that under lateral loadings, modular structures tend to fail at the columns which are critical members whose failure can lead to partial or total collapse of the structure. This paper aims to mitigate this by shifting the failure away from the columns to inter-modular connections which can be allowed to deform in a ductile manner. Towards this end, this paper proposes two innovative inter-modular connections and investigates their performance under monotonic and cyclic lateral loading using comprehensive validated numerical techniques. The proposed connections have an additional steel plate and resilient layers to provide increased ductility and dissipation of seismic energy with desired ductile failure mechanisms. Three-dimensional numerical models of the proposed connections are developed in ABAQUS software considering geometric and material nonlinearities, as well as contact formulations to accurately capture their response to the lateral loads and failure propagations. The numerical model is verified based on experimental results in the literature and used for extensive parametric studies. Seismic reliance of the proposed connections in terms of ductility, failure patterns, and energy absorption are compared with those of a standard inter-modular connection currently used in modular buildings. The outcome of this study demonstrates that the proposed connections have superior dynamic performances compared to the standard inter-modular connections in use today. New information generated through this study will enable to improve life safety and dynamic performance of modular building structures under typical gravity loads as well as under seismic loading.

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A restoring force model for a novel type of precast beam-to-column joints using mechanical connections

Zhuang

Sun²,

Bai

et al. 2023

Case Studies in Construction Materials

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Seismic behavior of concrete-filled double-skin steel tube/moment-resisting frames with beam-only-connected precast reinforced concrete shear walls

Cited by 14 publications

References 29 publications

Seismic performance assessment of new dry‐assembled prefabricated composite shear wall system with beam‐only connection

Seismic performance assessment of new dry‐assembled prefabricated composite shear wall system with beam‐only connection

Seismic mitigation of steel modular building structures through innovative inter-modular connections

A restoring force model for a novel type of precast beam-to-column joints using mechanical connections

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