Identification of Modal Parameters for Reinforcement of Walls in Earthen Ruins

The protection of earthen sites plays an important role in the context of preservation of cultural heritage, especially in the inheritance and promotion of history and culture. The aim of the paper is to present the essential results of an ongoing research on a reinforced rammed earthen wall in Suoy...

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Autores principales:	Bei Liu, Yucheng Shi, Kun Liu, Tao Li, Shaopeng Wang
Formato:	article
Lenguaje:	EN
Publicado:	Hindawi Limited 2021
Materias:	Materials of engineering and construction. Mechanics of materials TA401-492
Acceso en línea:	https://doaj.org/article/5a00c28958374387818398c9d9fa5e6f
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spelling	oai:doaj.org-article:5a00c28958374387818398c9d9fa5e6f2021-11-29T00:56:37ZIdentification of Modal Parameters for Reinforcement of Walls in Earthen Ruins1687-844210.1155/2021/4309707https://doaj.org/article/5a00c28958374387818398c9d9fa5e6f2021-01-01T00:00:00Zhttp://dx.doi.org/10.1155/2021/4309707https://doaj.org/toc/1687-8442The protection of earthen sites plays an important role in the context of preservation of cultural heritage, especially in the inheritance and promotion of history and culture. The aim of the paper is to present the essential results of an ongoing research on a reinforced rammed earthen wall in Suoyang City (Guazhou, China). The wall vibrations caused by ambient actions were analyzed using the stochastic subspace algorithm to estimate the modal parameters of the wall. The frequencies of the first three orders are 3.566 Hz, 5.003 Hz, and 6.250 Hz, and the corresponding modes are first-order transverse bending, second-order left and right torsion, and third-order vertical bending, respectively. Then, according to the data of elastic modulus obtained in the lab, the finite element calculation is carried out, and referring to the results of field measurement, the revised elastic modulus value is 205.90 MPa. It is worth mentioning that the revised value is significantly improved from the original laboratory value, and it is also indicated that the seismic performance of the reinforced wall has been significantly improved. The present work is expected to provide a theoretical basis for reinforcement, protection, and seismic control of earthen ruins.Bei LiuYucheng ShiKun LiuTao LiShaopeng WangHindawi LimitedarticleMaterials of engineering and construction. Mechanics of materialsTA401-492ENAdvances in Materials Science and Engineering, Vol 2021 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Materials of engineering and construction. Mechanics of materials TA401-492
spellingShingle	Materials of engineering and construction. Mechanics of materials TA401-492 Bei Liu Yucheng Shi Kun Liu Tao Li Shaopeng Wang Identification of Modal Parameters for Reinforcement of Walls in Earthen Ruins
description	The protection of earthen sites plays an important role in the context of preservation of cultural heritage, especially in the inheritance and promotion of history and culture. The aim of the paper is to present the essential results of an ongoing research on a reinforced rammed earthen wall in Suoyang City (Guazhou, China). The wall vibrations caused by ambient actions were analyzed using the stochastic subspace algorithm to estimate the modal parameters of the wall. The frequencies of the first three orders are 3.566 Hz, 5.003 Hz, and 6.250 Hz, and the corresponding modes are first-order transverse bending, second-order left and right torsion, and third-order vertical bending, respectively. Then, according to the data of elastic modulus obtained in the lab, the finite element calculation is carried out, and referring to the results of field measurement, the revised elastic modulus value is 205.90 MPa. It is worth mentioning that the revised value is significantly improved from the original laboratory value, and it is also indicated that the seismic performance of the reinforced wall has been significantly improved. The present work is expected to provide a theoretical basis for reinforcement, protection, and seismic control of earthen ruins.
format	article
author	Bei Liu Yucheng Shi Kun Liu Tao Li Shaopeng Wang
author_facet	Bei Liu Yucheng Shi Kun Liu Tao Li Shaopeng Wang
author_sort	Bei Liu
title	Identification of Modal Parameters for Reinforcement of Walls in Earthen Ruins
title_short	Identification of Modal Parameters for Reinforcement of Walls in Earthen Ruins
title_full	Identification of Modal Parameters for Reinforcement of Walls in Earthen Ruins
title_fullStr	Identification of Modal Parameters for Reinforcement of Walls in Earthen Ruins
title_full_unstemmed	Identification of Modal Parameters for Reinforcement of Walls in Earthen Ruins
title_sort	identification of modal parameters for reinforcement of walls in earthen ruins
publisher	Hindawi Limited
publishDate	2021
url	https://doaj.org/article/5a00c28958374387818398c9d9fa5e6f
work_keys_str_mv	AT beiliu identificationofmodalparametersforreinforcementofwallsinearthenruins AT yuchengshi identificationofmodalparametersforreinforcementofwallsinearthenruins AT kunliu identificationofmodalparametersforreinforcementofwallsinearthenruins AT taoli identificationofmodalparametersforreinforcementofwallsinearthenruins AT shaopengwang identificationofmodalparametersforreinforcementofwallsinearthenruins
_version_	1718407708680388608

Identification of Modal Parameters for Reinforcement of Walls in Earthen Ruins

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