|Table of Contents|

Shaking Table Tests and Analysis for Staggered Slab-column Structure System(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2022年02期
Page:
44-51
Research Field:
防灾减灾工程
Publishing date:

Info

Title:
Shaking Table Tests and Analysis for Staggered Slab-column Structure System
Author(s):
XU Wei1;  LIANG Shu-ting2
(1. Architects & Engineers Co., Ltd. of Southeast University, Nanjing 210096, Jiangsu, China; 2. School of Civil Engineering, Southeast University, Nanjing 210096, Jiangsu, China)
Keywords:
staggered floor;  slab-column structure;  shaking table test;  seismic response;  seismic performance
PACS:
TU375.4
DOI:
10.19815/j.jace.2021.09013
Abstract:
In order to study the seismic performance of staggered slab-column structure, shaking table tests were carried out on a structural model with a scale of 1:7. Two natural waves and one artificial wave were selected to analyze the natural frequency, structural damping ratio, acceleration, displacement, member strain and floor shear force of the structural model. The development of damage and final failure mode of staggered slab-column structure under different earthquake intensities were studied. The results show that under the action of earthquake, cracks appear at the column end and beam end of staggered slab-column structure, and with the continuous increase of seismic intensity, the cracks continue to develop until plastic hinges appear at the column end, and finally the whole structure collapses under the condition of 8 degree earthquake. The stress of the frame column at the staggered floor is the most complex, the strain level is high, and the damage is the most serious in the experimental process. With the continuous increase of the input seismic acceleration, the damage of the main structure accumulates, the natural frequency of the structure decreases, and the damping ratio of the structure increases. When the seismic intensity is different, the peak value of acceleration response of staggered slab-column structure varies greatly along the floor, and the structural dynamic amplification factor tends to decrease with the increase of seismic intensity. The lateral stiffness of staggered slab-column structure is small, and the interlayer displacement angle of the structure can not meet the requirements of the code under the action of low intensity earthquake. Therefore, it is suggested that staggered slab column structure should be avoided to applicating in high intensity areas.

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Last Update: 2022-03-20