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Frontiers of Structural and Civil Engineering

ISSN 2095-2430

ISSN 2095-2449(Online)

CN 10-1023/X

邮发代号 80-968

2019 Impact Factor: 1.68

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Frontiers of Structural and Civil Engineering  2015, Vol. 9 Issue (3): 323-340   https://doi.org/10.1007/s11709-015-0301-2
  本期目录
Performance of soft-hard-soft (SHS) cement based composite subjected to blast loading with consideration of interface properties
Jun WU1,2,Xuemei LIU()
1. College of Urban Railway Transportation, Shanghai University of Engineering Science, Shanghai 201620, China
2. Department of Civil and Environmental Engineering, National University of Singapore, Singapore 119077, Singapore
3. School of Civil Engineering and Built Environment, Queensland University of Technology, Brisbane, QLD 4072, Australia
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Abstract：

This paper presents a combined experimental and numerical study on the damage and performance of a soft-hard-soft (SHS) multi-layer cement based composite subjected to blast loading which can be used for protective structures and infrastructures to resist extreme loadings, and the composite consists of three layers of construction materials including asphalt concrete (AC) on the top, high strength concrete (HSC) in the middle, and engineered cementitious composites (ECC) at the bottom. To better characterize the material properties under dynamic loading, interface properties of the composite were investigated through direct shear test and also used to validate the interface model. Strain rate effects of the asphalt concrete were also studied and both compressive and tensile dynamic increase factor (DIF) curves were improved based on split Hopkinson pressure bar (SHPB) test. A full-scale field blast test investigated the blast behavior of the composite materials. The numerical model was established by taking into account the strain rate effect of all concrete materials. Furthermore, the interface properties were also considered into the model. The numerical simulation using nonlinear finite element software LS-DYNA agrees closely with the experimental data. Both the numerical and field blast test indicated that the SHS composite exhibited high resistance against blast loading.
Key words： high strength concrete (SHS)    engineered cementitious composite    interface    blast test    strain rate effect
收稿日期: 2015-07-13      出版日期: 2015-10-09
Corresponding Author(s): Xuemei LIU   
 引用本文:   
. [J]. Frontiers of Structural and Civil Engineering, 2015, 9(3): 323-340.
Jun WU,Xuemei LIU. Performance of soft-hard-soft (SHS) cement based composite subjected to blast loading with consideration of interface properties. Front. Struct. Civ. Eng., 2015, 9(3): 323-340.
 链接本文:  
https://academic.hep.com.cn/fsce/CN/10.1007/s11709-015-0301-2
https://academic.hep.com.cn/fsce/CN/Y2015/V9/I3/323
Fig.1  
Fig.2  
Fig.3  
Fig.4  
Fig.5  
Fig.6  
parameters unit value
KIC MPa·mm 1/2 12.2
υ — 0.35
E MPa 598
Gf MPa·mm 0.221
wc mm 40
Gf/wc — 0.00554
ft MPa 0.7
b2 — 0.2
Tab.1  
Fig.7  
Fig.8  
Fig.9  
parameters units HSC ECC
Young’s modulus, E GPa 33 18
compressive strength, fc MPa 55 64
tensile strength, ft MPa 4.35 5
Poisson’s ratio, ν — 0.2 0.22
density, ρ kg/m3 2400 2080
Tab.2  
Fig.10  
parameters units GST steel
Young’s modulus, E MPa 500 207000
yield stress, f y MPa 7.5 460
Poisson’s ratio, ν — 0.3 0.3
density, ρ kg/m3 1030 7850
Tab.3  
Fig.11  
parameters units GST steel
Young’s modulus, E MPa 500 207000
yield stress, f y MPa 7.5 460
Poisson’s ratio, ν — 0.3 0.3
density, ρ kg/m3 1030 7850
Tab.4  
Fig.12  
parameters units value
density, ρ kg/m3 2100
shear modulus, G MPa 13.8
Poisson’s ratio, ν — 0.3
cohesion, c kPa 62
friction angle, φ o 26
Tab.5  
Fig.13  
Fig.14  
Fig.15  
Fig.16  
parameters unit value
contact type − TIEBREAK
friction coefficient for static − 0.71
friction coefficient for dynamic − 0.56
τ n MPa 0.05
τ s MPa 1.15
D mm 10
Tab.6  
Fig.17  
Fig.18  
Fig.19  
Fig.20  
Fig.21  
Fig.22  
item field trial test numerical result deviation from field trial test
max. vertical acceleration /(m·s−2) 35,400 38,870 10%
Tab.7  
item field blast test/kPa numerical result/kPa deviation from field trial test
TPC1 Destroyed 13,393 sensor destroyed as pressure>>range
TPC2 273 267 2%
TPC3 200 241 20%
Tab.8  
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