3D finite element analysis of composite noise barrier constructed of polyurethane products

doi:10.1007/s11709-016-0364-8

Front. Struct. Civ. Eng.

2017, Vol. 11

Issue (1) : 100-110 https://doi.org/10.1007/s11709-016-0364-8

RESEARCH ARTICLE

3D finite element analysis of composite noise barrier constructed of polyurethane products

Ben DAEE(

),Hesham El NAGGAR

Department of Civil and Environmental Engineering, the University of Western Ontario, London, ON N6A 5B9, Canada

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Abstract

This paper presents a numerical investigation on the structural performance of an innovative noise barrier consisting of poly-block, rigid polyurethane foam (RPF) and polyurea. The mechanical characteristics of RPF as well as the flexural resistance of the proposed wall system (poly-wall) were established and presented in another study. The experimental results are used in the current study to develop, calibrate and verify 3D finite element (FE) models of the wall system. The components of the poly-wall including steel rebars, poly-blocks and RPF cores were simulated and then verified using the results of experiments conducted on the wall components. The results of numerical analysis exhibited a satisfactory agreement with the experimental outcomes for the entire wall system. The verified numerical models were then used to conduct a parametric study on the performance of poly-wall models under uniform wind load and gravity load. The findings of the current study confirmed that the structural performance of poly-wall is satisfactory for noise barrier application. Simulation techniques for improvement of the numerical analysis of multi-martial 3D FE models were discussed.

Keywords 3D finite element sound wall rigid polyurethane foam poly-wall numerical model calibration

Corresponding Author(s): Ben DAEE

Online First Date: 16 November 2016 Issue Date: 27 February 2017

Cite this article:

Ben DAEE,Hesham El NAGGAR. 3D finite element analysis of composite noise barrier constructed of polyurethane products[J]. Front. Struct. Civ. Eng., 2017, 11(1): 100-110.

URL:

https://academic.hep.com.cn/fsce/EN/10.1007/s11709-016-0364-8
https://academic.hep.com.cn/fsce/EN/Y2017/V11/I1/100

Fig.1 Poly-wall made of polyurethanes

Fig.2 FE model of rebar interaction and foundation

Fig.3 Stress-strain relation of steel rebar and FE results

Fig.4 Poly-block before and after compression test

Fig.5 Compressive stress-strain relation of poly-block

Fig.6 Poly-block FE model. (a) Before loading; (b) after loading

Fig.7 Compression stress-strain relation

Fig.8 Flexural behavior of RPF samples

Fig.9 Finite element results of flexural test (not to scale)

Fig.10 FE model of compression test. (a) Before loading; (b) after loading (not scale)

Fig.11 Compressive stress-strain relation of RPF and numerical results

Fig.12 meshed parts of poly-wall. (a) Rebar; (b) poly-block; (c) RPF core

Fig.13 Assembly of poly-wall parts. (a) Rebars; (b) RPF cores; (c) poly-blocks; (d) completed numerical model

Fig.14 Full-scale experimental and corresponding FE model

Fig.15 Comparison of flexural behavior from load tests and numerical analyses

Fig.16 Stress contour at the connection of poly-wall and foundation (not to scale)

Fig.17 Comparison of lateral load-displacement relation of poly-wall in concentrated and distributed loading. (a) Poly-wall reinforced with 2 m × 10 m; (b)poly-wall reinforced with 2 m × 15 m

Fig.18 Equivalent model of poly-wall

Tab.1 Effect of vertical load on lateral resistance of poly-wall reinforced with 2 m × 15 m

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