Title:
Finite Element Analyses of Seismic Response of a 22-story RC Wall Building subjected to Drying Shrinkage Cracking and Application of SCRPCC
Author(s):
Kitazawa, K.; Sato, Y.; Naganuma, K.; Kaneko, Y.
Publication:
Symposium Paper
Volume:
343
Issue:
Appears on pages(s):
272-281
Keywords:
Drying shrinkage crack, Steel chip reinforced polymer cementitious composite, 3D FEM
DOI:
Date:
10/1/2020
Abstract:
This paper attempts to investigate the effectiveness of Steel Chip Reinforced Polymer Cementitious Composite (SCRPCC) to reduce the seismic drift of high rise building by employing finite element method. Steel chips are produced when a steel plate is precisely
machined on a numerically controlled lathe. To verify the influence of drying shrinkage on the structural performance of entire buildings, seismic response analyses of a 22-story RC wall
building subject to drying shrinkage cracking are conducted.
The analyzed building was damaged in 1985 Mexico Earthquake. In the analyses, drying shrinkage is considered by conducting the drying shrinkage cracking analyses before dynamic seismic vibration analyses to examine the influence of drying shrinkage. For each case of the analyses, two kinds of materials are used; ordinary concrete and SCRPCC. The shrinkage of 8,400-day drying period induces cracks in the walls of top floor as well as the first floor. The maximum drift of the building is increased in the NS direction by the
shrinkage cracking while reduced in the EW direction. The maximum total drift of the building during the seismic vibration is reduced by 3.5% in the NS direction and 8.9% in the EW
direction by using the SCRPCC instead of the ordinary concrete. The average crack width of the building is reduced by 11.1% by the SCRPCC.
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