Seismic Performance of Precast Concrete Shear Walls Connected by Grouted Bellows and Confined with Overlapped Closed Stirrups

TANG Lei; ZHOU Enquan

doi:10.13204/j.gyjzG21090907

Volume 52 Issue 6

Sep. 2022

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TANG Lei, ZHOU Enquan. Seismic Performance of Precast Concrete Shear Walls Connected by Grouted Bellows and Confined with Overlapped Closed Stirrups[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(6): 79-86. doi: 10.13204/j.gyjzG21090907

Citation:

TANG Lei, ZHOU Enquan. Seismic Performance of Precast Concrete Shear Walls Connected by Grouted Bellows and Confined with Overlapped Closed Stirrups[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(6): 79-86. doi: 10.13204/j.gyjzG21090907

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Seismic Performance of Precast Concrete Shear Walls Connected by Grouted Bellows and Confined with Overlapped Closed Stirrups

doi: 10.13204/j.gyjzG21090907

School of Civil Engineering, Southeast University, Nanjing 210096, China

Received Date: 2021-09-09
Available Online: 2022-09-05

Abstract

Abstract

Experimental research was carried out on the precast concrete shear wall connected by grouted bellows and confined with overlapped closed stirrups and its emulative seismic performance was verified. Moreover, the parameter analysis of mechanical properties was conducted by using MATLAB to discuss the influence of key parameters on the seismic properties, such as axial compression ratio, shear span-ratio, boundary element length, vertical reinforcement ratio, stirrup characteristic values of boundary elements, and concrete strength. As axial load ratio increased, the deformation capacity decreased, and the bearing capacity was first rose and then decreased; with the increase of shear-span ratio, the bearing capacity decreased and the deformation capability was improved; as boundary element lengths increased, the bearing capacity of the component increased and the deformation capability rose and then decreased; with the increase of vertical reinforcement ratio, the bearing capacity increased linearly, and the deformation capability changed less; with the increase of stirrup characteristic values of boundary elements, the deformation capability was obviously improved, and the bearing capacity was less variable; with the increase of concrete strength, the bearing capacity and deformation capacity were improved to some extent. According to the test and MATLAB results, it was suggested that for the design of precast concrete shear walls connected by grouted bellows, the axial compression ratio should be controlled below 0.4; the shear-span ratio should not be less than 2.5; the boundary element length could be set according to the current cast-in-place concrete specification; when the design allows and the construction is feasible, it showed that the edge member coupling characteristic value should be improved; the concrete strength should meet the design requirements.
- shear wall,
- grouted connection,
- overlapped closed stirrup,
- seismic performance,
- parametric analysis

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References(20)

References

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