Paper Title:
Stiffness Reduction for Flat Plate Systems due to Cracking
  Abstract

The purpose of this study is to propose a stiffness reduction factor for flat plate systems under lateral loads. According to current design provisions, slab stiffness under lateral loads should account for stiffness reduction due to the effects of cracks. Several researchers have conducted for evaluating the stiffness reduction in flat plate slab systems under lateral loads. However, no research is found for establishing strength reduction factor with respect to the level of applied moment. This study attempted to propose equations for calculating stiffness reduction factor with respect to the level of applied moment (Ma) represented by the ratio of Ma to the cracking moment of the slab (Mcr). For this purpose, test results of 20 interior slab-column connections were collected. For each specimen, stiffness reduction was measured with respect to Ma/Mcr. To verify the proposed factor, this study conducted the experimental test of interior connection under quasistatic cyclic loading, from which load-deformation curve was obtained. The curve was compared with that obtained from the effective beam width method with the proposed stiffness reduction factor. It shows that the proposed factor accurately predicts stiffness reduction in flat plate systems.

  Info
Periodical
Key Engineering Materials (Volumes 348-349)
Edited by
J. Alfaiate, M.H. Aliabadi, M. Guagliano and L. Susmel
Pages
781-784
DOI
10.4028/www.scientific.net/KEM.348-349.781
Citation
Y. M. Park, S. W. Han, J. O. Cho, "Stiffness Reduction for Flat Plate Systems due to Cracking", Key Engineering Materials, Vols. 348-349, pp. 781-784, 2007
Online since
September 2007
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Myung Shin Choi, In Jung Cho, Byum Seok Han, Jong Mun Ahn, S.W. Shin
Abstract:An experimental investigation was conducted to study the seismic behavior of slabcolumn connections under vertical shear and cyclic lateral...
641
Authors: Li Xue Jiang, Shi Ju Zheng, Wei Ping Zhang, Xiang Lin Gu
Abstract:Eight weak reinforced concrete beam-column connections and two strong ones subjected to cyclic loads were tested. Effects of the one-way...
881
Authors: Wei Li, Lei Jiang, Lin Zhu Sun
Chapter 1: Structural Engineering
Abstract:Existing models appropriate for design applications tend to overestimate the measured effective stiffness and are unacceptably inaccurate,...
674
Authors: Meng Zhou Lv, Tian Peng Pan, Xiao Bo Wu
Chapter 1: Structural Engineering
Abstract:"Strong column weak beam" form of frame structure is widely considered to be a reasonable framework structure yield mechanism in the seismic...
864