|Table of Contents|

Experimental investigation and numerical simulation on mechanical behavior of opened profiled steel sheet-ECC composite slabs(PDF)

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

Issue:
2024年04期
Page:
20-30
Research Field:
建筑结构
Publishing date:

Info

Title:
Experimental investigation and numerical simulation on mechanical behavior of opened profiled steel sheet-ECC composite slabs
Author(s):
BAI Liang;  SONG Lisha;  XU Zhuoxuan;  LING Tong;  LIAO Fangfang
(School of Civil Engineering, Chang'an University, Xi'an 710061, Shaanxi, China)
Keywords:
opened profiled steel sheet;  ECC;  composite slab;  flexural capacity;  experimental investigation;  numerical simulation
PACS:
TU398.9
DOI:
10.19815/j.jace.2024.02001
Abstract:
In order to study mechanical behavior of opened profiled steel sheet-engineered cementitious composite(ECC)slabs, static loading tests and numerical simulation were conducted on opened profiled steel sheet-ECC composite slabs to investigate destruction mode, end slip, load-deflection curve, strain distributions and bearing capacity. The flexural bearing behavior of specimens was simulated by ABAQUS, and the numerical simulation results agreed well with the test results. On this basis, the effects of ECC section height, ECC tensile strength, profiled steel plate thickness and shear span ratio on the flexural capacity performance of the composite slabs were analyzed. Based on the tensile strain hardening characteristics of ECC, a method for calculating the flexural capacity of opened profiled steel sheet-ECC composite slabs considering the tensile effect of ECC was established. The results show that for the specimens with longitudinal shear failure, the tensile efficacy of the profiled steel sheet is not utilized effectively, and the end slip develops obviously during the later loading. Under the same parameters, the specimens with studs and shear reinforcements at the ends behaves flexural failure, the profiled steel sheet yields, and its ultimate flexural capacity was 2.1 times to 2.31 times that of the specimens with shear failure. The ECC section height has the most significant impact on the flexural capacity of composite slabs among several factors. The proposed formula can better predict the flexural capacity of this type of composite slabs.

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Last Update: 2024-07-20