S-Diethylamino-S-(3-methylbenzoylimino)-S,S-diphenylsulfonium tetrafluoroborate

Sheikh, Md. Chanmiya; Yoshimura, Toshiaki; Miyatake, Ryuta; Hanawa, S.

doi:10.1107/s241431461901040x

Cited by 2 publications

(3 citation statements)

References 13 publications

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“…On the other hand, for a monolithic beam‐column joint, the column would provide a confinement to the beam ends resulting in an increase of the ultimate compressive strain of the concrete. It is commonly referred to as the stub effect . However, the existence of the interfaces at the beam ends would weaken the stub effect to cause no additional increase on the ultimate compression strain of the concrete at the beam ends.…”

Section: Test Results and Analysismentioning

confidence: 99%

“…It is commonly referred to as the stub effect. [23][24][25] However, the existence of the interfaces at the beam ends would weaken the stub effect to cause no additional increase on the ultimate compression strain of the concrete at the beam ends. Even though there were also interfaces on specimen PJZ-1, the distance of the interfaces to the beam end was greater than that of specimen PJZ-2 and the bending moment at the interface on specimen PJZ-1 was lower.…”

Section: Crack Pattern and Failure Modementioning

confidence: 99%

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Effects of postcast connection locations on the seismic performance of precast concrete frame joints

Feng

Xiong

Chen

et al. 2018

Structural Design Tall Build

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Summary For the precast structure with postcast connections, the location of the connection is usually the midspan of the beam, joint core, and beam end. However, the postcast connections located at the midspan of the beam or the joint core would increase the difficulty of construction because of the large dimension of the precast components or reinforcement congestion at joint core, respectively. A connection located at the beam end could decrease the seismic performance the energy dissipation mechanism being disturbed. To balance the requirements on the transportation, construction, and seismic performance, the connection is proposed to be located at one plastic hinge length from the beam end. A quasi‐static test was conducted on three 6 m × 3 m beam‐column joints, including two precast joints and a monolithic joint. The results show that the joint with connections located outside the plastic hinge zone had good seismic performance. When the connection located at the beam end, the ductility, strength, and energy dissipation reduced 8%, 10%, and 30%, respectively. To optimize the postcast location, finite element analysis was conducted and 2h was suggested for the postcast location according to the analysis results.

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Section: Test Results and Analysismentioning

confidence: 99%

Section: Crack Pattern and Failure Modementioning

confidence: 99%

Effects of postcast connection locations on the seismic performance of precast concrete frame joints

Feng

Xiong

Chen

et al. 2018

Structural Design Tall Build

View full text Add to dashboard Cite

show abstract

“…It is known that the axial compression ratio has significant effect on the strength and ductility of RC columns or walls subjected to seismic loads . It is a common sense that the higher compression on RC columns leads to the stronger flexural strength but the lower ductility under seismic loads.…”

Section: Introductionmentioning

confidence: 99%

Using XFEM to model the effect of different axial compression on the hysteretic behaviour of the flexure‐dominant RC columns

Zhan

et al. 2018

Structural Design Tall Build

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The axial compression ratio has a significant effect on the strength and ductility of reinforced concrete (RC) columns subjected to seismic loads. However, limited numerical models have been found to be able to consider the effect of axial compression ratio in mesoscopic scale. To achieve a sound understanding of the hysteretic mechanism of RC columns with different axial compression ratios, a novel modelling method was developed by employing the following techniques: (a) the extended finite element method for modelling crack initiating and propagating in concrete; (b) the contact algorithm for modelling the crack closure; and (c) the Cartesian type "connector" for modelling the interaction between concrete and steel bars. The effectiveness of the proposed model was validated in macroscopic scale by the results of a previous experimental study. Further analysis indicates that the axial compression ratio controls the axial deformations of RC columns, thus leads to different performances of concrete and steel under seismic loads. Based on the individual flexural contributions of the concrete and the steel bars, the effect of the axial compression ratio and the pinching effect is explained in a finer scale. The analytical results shed some light on the seismic mechanism of RC columns with different axial compression ratios. KEYWORDS axial compression ratio, extended finite element method, hysteretic loop, reinforced concrete column, seismicity XFEM to model the effect of different axial compression on the hysteretic behaviour of the flexure-dominant RC columns. Struct Design Tall Spec Build. 2018;27:e1465. https://doi.

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S-Diethylamino-S-(3-methylbenzoylimino)-S,S-diphenylsulfonium tetrafluoroborate

Cited by 2 publications

References 13 publications

Effects of postcast connection locations on the seismic performance of precast concrete frame joints

Effects of postcast connection locations on the seismic performance of precast concrete frame joints

Using XFEM to model the effect of different axial compression on the hysteretic behaviour of the flexure‐dominant RC columns

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