Investigation on the non-uniform temperature distribution of large-diameter concrete silos under solar radiation

There is a growing demand for silos with large diameters and volumes; hence, the stresses induced by the temperature differences between the inner and the outer surfaces of the concrete walls of the large silos become significant. Sunshine is the main source of the temperature differences; and it is...

Full description

Saved in:
Bibliographic Details
Main Authors: Zhao, Liang, Yang, Zhiyong, Wang, Lijie
Other Authors: School of Civil and Environmental Engineering
Format: Article
Language:English
Published: 2018
Subjects:
Online Access:https://hdl.handle.net/10356/89005
http://hdl.handle.net/10220/47007
Tags: Add Tag
No Tags, Be the first to tag this record!
Institution: Nanyang Technological University
Language: English
id sg-ntu-dr.10356-89005
record_format dspace
spelling sg-ntu-dr.10356-890052020-03-07T11:43:36Z Investigation on the non-uniform temperature distribution of large-diameter concrete silos under solar radiation Zhao, Liang Yang, Zhiyong Wang, Lijie School of Civil and Environmental Engineering DRNTU::Engineering::Civil engineering Silos Temperature There is a growing demand for silos with large diameters and volumes; hence, the stresses induced by the temperature differences between the inner and the outer surfaces of the concrete walls of the large silos become significant. Sunshine is the main source of the temperature differences; and it is necessary to investigate the influences of sunshine on large concrete silos and ensure their safety and durability. In this paper, the temperature distribution of a concrete silo exposed to the sunshine was measured on site. A finite element (FE) model was built to analyze the temperature distribution under the sunshine, and the FE model was validated by comparing the yielded temperature field with that obtained on site. Based on the temperature field yielded in the FE model, the internal forces of the silo were determined by performing a structural analysis. After that, the FE model was extended and used for a parametrical study, and the influences induced by the factors like meteorological parameters, dimension of silos, and reference temperature on the temperature effects of the silo were investigated. The simulation results showed that the temperature gradient exhibited significant nonlinearities along the wall thickness. The performance of a steady-state analytical method was evaluated, which is conventionally used for the design of silos. It was found that, for the silos with the thicknesses of more than 30 centimeters, the steady-state method overestimated the temperature effects. It is suggested here that nonlinear temperature gradients should be employed for considering the temperature effects of large silos. Published version 2018-12-17T07:08:06Z 2019-12-06T17:15:42Z 2018-12-17T07:08:06Z 2019-12-06T17:15:42Z 2018 Journal Article Zhao, L., Yang, Z., & Wang, L. (2018). Investigation on the non-uniform temperature distribution of large-diameter concrete silos under solar radiation. Mathematical Problems in Engineering, 2018, 5304974-. doi: 10.1155/2018/5304974 1024-123X https://hdl.handle.net/10356/89005 http://hdl.handle.net/10220/47007 10.1155/2018/5304974 en Mathematical Problems in Engineering © 2018 Liang Zhao et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. 16 p. application/pdf
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic DRNTU::Engineering::Civil engineering
Silos
Temperature
spellingShingle DRNTU::Engineering::Civil engineering
Silos
Temperature
Zhao, Liang
Yang, Zhiyong
Wang, Lijie
Investigation on the non-uniform temperature distribution of large-diameter concrete silos under solar radiation
description There is a growing demand for silos with large diameters and volumes; hence, the stresses induced by the temperature differences between the inner and the outer surfaces of the concrete walls of the large silos become significant. Sunshine is the main source of the temperature differences; and it is necessary to investigate the influences of sunshine on large concrete silos and ensure their safety and durability. In this paper, the temperature distribution of a concrete silo exposed to the sunshine was measured on site. A finite element (FE) model was built to analyze the temperature distribution under the sunshine, and the FE model was validated by comparing the yielded temperature field with that obtained on site. Based on the temperature field yielded in the FE model, the internal forces of the silo were determined by performing a structural analysis. After that, the FE model was extended and used for a parametrical study, and the influences induced by the factors like meteorological parameters, dimension of silos, and reference temperature on the temperature effects of the silo were investigated. The simulation results showed that the temperature gradient exhibited significant nonlinearities along the wall thickness. The performance of a steady-state analytical method was evaluated, which is conventionally used for the design of silos. It was found that, for the silos with the thicknesses of more than 30 centimeters, the steady-state method overestimated the temperature effects. It is suggested here that nonlinear temperature gradients should be employed for considering the temperature effects of large silos.
author2 School of Civil and Environmental Engineering
author_facet School of Civil and Environmental Engineering
Zhao, Liang
Yang, Zhiyong
Wang, Lijie
format Article
author Zhao, Liang
Yang, Zhiyong
Wang, Lijie
author_sort Zhao, Liang
title Investigation on the non-uniform temperature distribution of large-diameter concrete silos under solar radiation
title_short Investigation on the non-uniform temperature distribution of large-diameter concrete silos under solar radiation
title_full Investigation on the non-uniform temperature distribution of large-diameter concrete silos under solar radiation
title_fullStr Investigation on the non-uniform temperature distribution of large-diameter concrete silos under solar radiation
title_full_unstemmed Investigation on the non-uniform temperature distribution of large-diameter concrete silos under solar radiation
title_sort investigation on the non-uniform temperature distribution of large-diameter concrete silos under solar radiation
publishDate 2018
url https://hdl.handle.net/10356/89005
http://hdl.handle.net/10220/47007
_version_ 1681049742407106560