Experimental study of a novel multi-hazard resistant prefabricated concrete frame structure

Lin, Kaiqi; Lu, Xinzheng; Li, Yi; Guan, Hong

doi:10.1016/j.soildyn.2018.04.011

Cited by 52 publications

(37 citation statements)

References 37 publications

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“… Conventional progressive collapse design Conventionally, after performing the progressive collapse design, the newly added reinforcement for collapse prevention is usually placed at the top and bottom of the frame beam, as shown in Figure A. According to the experimental results presented in Lin et al, the flexural strength of the beam will increase by approximately 30% for RC6 under such a reinforcement layout. Hence, this layout will undoubtedly increase the flexural capacity of the beam, thus, resulting in a potential risk of “strong‐beam‐weak‐column” failure under seismic actions.…”

Section: Experimental Schemementioning

confidence: 99%

“…The experimental setup for the seismic cyclic tests is shown in Figure A . The joint specimens are hinged at both ends of the column.…”

Section: Experimental Schemementioning

confidence: 99%

“…The loading points on the beams are 1.5 m away from the joint center. Detailed loading protocol can be found in Lin et al…”

Section: Experimental Schemementioning

confidence: 99%

“…(A) Setup for the seismic cyclic test and (B) setup for the progressive collapse test [Colour figure can be viewed at wileyonlinelibrary.com]…”

Section: Experimental Schemementioning

confidence: 99%

“…Consequently, the strengths of RC frame beams are a major concern for most existing progressive collapse design regulations . Among the existing studies, the alternate path (AP) method is most commonly used for design and evaluation of the structural progressive collapse resistance . In the AP method, the structure is examined under the removal of one or several critical columns that are vulnerable to hazards.…”

Section: Introductionmentioning

confidence: 99%

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A novel structural detailing for the improvement of seismic and progressive collapse performances of RC frames

Lin

et al. 2019

Earthq Engng Struct Dyn

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Summary Earthquake‐induced building collapse and progressive collapse due to accidental local failure of vertical components are the two most common failure modes of reinforced concrete (RC) frame structures. Conventional design methods usually focus on the design requirements of a specific hazard but neglect the interactions between different designs. For example, the progressive collapse design of an RC frame often yields increased reinforcement and flexural strength of the beams. As a result, the seismic design principle of “strong‐column‐weak‐beam” may be violated, which may lead to unfavorable failure modes and weaken the seismic performance. To avoid these adverse effects of the progressive collapse design on the seismic resistance of RC frames, a novel structural detailing is proposed in this study. The proposed detailing technique intends to concurrently improve the seismic and progressive collapse performances of an RC frame by changing the layout of the newly added longitudinal reinforcement against progressive collapse without introducing any additional reinforcement. A six‐story RC frame is used as the prototype building for this investigation. Both cyclic and progressive collapse tests are conducted to validate the performance of the proposed structural detailing. Based on the experimental results, detailed finite element (FE) models of the RC frame with different reinforcement layouts are established. The seismic and progressive collapse resistances of different models are compared based on the incremental dynamic analysis (IDA) and nonlinear dynamic alternate path (AP) methods, respectively. The results indicate that the proposed structural detailing can effectively resolve the conflict between the seismic and progressive collapse designs.

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Section: Experimental Schemementioning

confidence: 99%

“…The experimental setup for the seismic cyclic tests is shown in Figure A . The joint specimens are hinged at both ends of the column.…”

Section: Experimental Schemementioning

confidence: 99%

“…The loading points on the beams are 1.5 m away from the joint center. Detailed loading protocol can be found in Lin et al…”

Section: Experimental Schemementioning

confidence: 99%

“…(A) Setup for the seismic cyclic test and (B) setup for the progressive collapse test [Colour figure can be viewed at wileyonlinelibrary.com]…”

Section: Experimental Schemementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A novel structural detailing for the improvement of seismic and progressive collapse performances of RC frames

Lin

et al. 2019

Earthq Engng Struct Dyn

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Experimental study on precast concrete moment‐resisting frame system with sector lead viscoelastic dampers

Deng

et al. 2021

Struct Control Health Monit

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Connection failure between precast components greatly increases the risk of collapse of a precast concrete (PC) frame during earthquakes. In this study, a PC frame structure system with sector lead-viscoelastic damper (SLVD) is proposed, in which the SLVD not only protects the wet connection but also absorbs input energy in earthquakes. Two two-storey two-bay PC frame were constructed, one without SLVD (PC specimen) and the other with SLVDs (PS specimen). These PC frames were tested under cyclic loading and compared to an analogous monolithic frame (RC specimen). The differences in hysteretic curves, bearing capacity, strength and stiffness degradation, and energy dissipation capacity of the three specimens are compared in detail to investigate the impact of SLVD on the seismic performance of the PC frame. The experimental results show that the bearing capacity of the PS specimen in positive and negative loading directions increased by 42.53% and 31.26%, respectively, compared with the PC specimen. The ultimate deformation capacity and ductility of the PS specimen were better than those of the PC specimen. The seismic performance of the precast frame with SLVDs was similar to that of the monolithic reinforcement frame structure.

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Prefabrication

Adepoju

2021

Re-Skilling Human Resources for Construction 4.0

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Experimental study of a novel multi-hazard resistant prefabricated concrete frame structure

Cited by 52 publications

References 37 publications

A novel structural detailing for the improvement of seismic and progressive collapse performances of RC frames

A novel structural detailing for the improvement of seismic and progressive collapse performances of RC frames

Experimental study on precast concrete moment‐resisting frame system with sector lead viscoelastic dampers

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