Mine blast vibration response spectrum for structural vulnerability assessment: case study of heritage masonry buildings

TY - JOUR

T1 - Mine blast vibration response spectrum for structural vulnerability assessment

T2 - case study of heritage masonry buildings

AU - Tsang, H. H.

AU - Gad, E. F.

AU - Wilson, J. L.

AU - Jordan, J. W.

AU - Moore, A. J.

AU - Richards, A. B.

N1 - Publisher Copyright: © 2017 Taylor & Francis.

PY - 2018

Y1 - 2018

N2 - Ground-borne vibrations induced by mine blasting are typically of low amplitudes, which are not considered a major concern for modern engineered structures. However, historic structures are often considered more vulnerable due to inadequate knowledge regarding the state of construction materials and structural response. Specifically, the construction materials used might be fragile or have deteriorated to a stage that could be vulnerable to such vibrations. Simplistic rule based on peak ground motion parameter has been adopted worldwide for safety assessment, while the frequency characteristics of vibrations are not taken into account. Further, there is very limited study on response of heritage structures to near-field blasting. This article presents a practical structural vulnerability assessment method for mine blast-induced vibrations. In particular, a design response spectrum model is proposed based on close range measurements of nearby mine blasting, which is compared with an existing design spectrum model for far-field mine blasts and a typical design spectrum model for earthquake actions. The method is illustrated through a case study of heritage masonry buildings in Australia. The unique blast data presented and the generalized methodology would be useful to both structural engineers and blast engineers in considering potential effects of blasting on heritage structures.

AB - Ground-borne vibrations induced by mine blasting are typically of low amplitudes, which are not considered a major concern for modern engineered structures. However, historic structures are often considered more vulnerable due to inadequate knowledge regarding the state of construction materials and structural response. Specifically, the construction materials used might be fragile or have deteriorated to a stage that could be vulnerable to such vibrations. Simplistic rule based on peak ground motion parameter has been adopted worldwide for safety assessment, while the frequency characteristics of vibrations are not taken into account. Further, there is very limited study on response of heritage structures to near-field blasting. This article presents a practical structural vulnerability assessment method for mine blast-induced vibrations. In particular, a design response spectrum model is proposed based on close range measurements of nearby mine blasting, which is compared with an existing design spectrum model for far-field mine blasts and a typical design spectrum model for earthquake actions. The method is illustrated through a case study of heritage masonry buildings in Australia. The unique blast data presented and the generalized methodology would be useful to both structural engineers and blast engineers in considering potential effects of blasting on heritage structures.

KW - Blast vibration

KW - Coal mine

KW - Design response spectrum

KW - Heritage building

KW - Structural vulnerability

UR - https://www.scopus.com/pages/publications/85036527847

U2 - 10.1080/15583058.2017.1406015

DO - 10.1080/15583058.2017.1406015

M3 - Article

AN - SCOPUS:85036527847

SN - 1558-3058

VL - 12

SP - 270

EP - 279

JO - International Journal of Architectural Heritage

JF - International Journal of Architectural Heritage

IS - 2

ER -