RESEARCH ON SEISMIC PERFORMANCES OF FIRST ASEISMIC GRADE FRAMES WITH PSRC VIERENDEEL TRUSS TRANSFER STORIES UNDER MAIN-AFTER SHOCKS

CHEN Yong; JIAN Bin; LIU Chong

doi:10.13204/j.gyjzG20071008

Volume 51 Issue 8

Nov. 2021

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CHEN Yong, JIAN Bin, LIU Chong. RESEARCH ON SEISMIC PERFORMANCES OF FIRST ASEISMIC GRADE FRAMES WITH PSRC VIERENDEEL TRUSS TRANSFER STORIES UNDER MAIN-AFTER SHOCKS[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(8): 45-52,105. doi: 10.13204/j.gyjzG20071008

Citation:

CHEN Yong, JIAN Bin, LIU Chong. RESEARCH ON SEISMIC PERFORMANCES OF FIRST ASEISMIC GRADE FRAMES WITH PSRC VIERENDEEL TRUSS TRANSFER STORIES UNDER MAIN-AFTER SHOCKS[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(8): 45-52,105. doi: 10.13204/j.gyjzG20071008

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RESEARCH ON SEISMIC PERFORMANCES OF FIRST ASEISMIC GRADE FRAMES WITH PSRC VIERENDEEL TRUSS TRANSFER STORIES UNDER MAIN-AFTER SHOCKS

doi: 10.13204/j.gyjzG20071008

CHEN Yong¹,
JIAN Bin^{2,3
,
,},
LIU Chong^2,3

1. Dongguan Daye Construction Drawings Review Co., Ltd., Dongguan 523000, China;
2. Key Laboratory of New Technology for Construction of Cities in Mountain Area of the Ministry of Education, Chongqing University, Chongqing 400045, China;
3. School of Civil Engineering, Chongqing University, Chongqing 400045, China

Received Date: 2020-07-10
Available Online: 2021-11-10
Publish Date: 2021-11-10

Abstract

Abstract

Based on the design method of "three-line defenses seismic fortification", two pieces of first aseismic grade frames with PSRC vierendeel truss transfer story and different numbers of the upper stories were designed under eight degree (0.2g) of seismic fortification level, and a series of elastic-plastic time-history analysis had been completed under rare intensity level of different intensity aftershocks (Δ_PGA=0, 0.5, 0.8, 1.0). After that, the seismic performance and damage of components, defenses, and structures were studied with inter-story drift ratios, ratios of demand to capacity of plastic hinge rotation, damage indexes and others. The results showed that the structures could avoid overall damage under the main-after shocks, and the damage indexes of a few upper beams appeared local damage when the aftershocks were strong; a "beam-column mixed hinge mechanism" could be formed to dissipate energy mainly with the beam hinges in the first line defense, and the damage indexes of the last two defenses were obviously smaller than the first one, so the design principle of "the three-line defenses seismic fortification" could be realized. Under the aftershocks, the overall damage indexes of structures increased significantly, and "the secondary damage" caused by the aftershocks were obviously; under larger aftershocks, hinges in the transfer columns were more widespread, and even a "mechanism of story lateral displacement" occured, so it was necessary to strengthen the moment magnifying measures of the transfer columns.
- prestressed steel reinforced concrete,
- vierendeel truss transfer story,
- main-after shock,
- damage index,
- elastic-plastic time-history analysis

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References(19)

References

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