TY - JOUR
T1 - Vibration impact of rock excavation on nearby sensitive buildings
T2 - An assessment framework
AU - Wang, Shiguang
AU - Zhu, Songye
N1 - Funding Information:
Various guidelines (e.g., Caltrans [1]) present empirical formulas derived from engineering tests and numerical simulations to predict vibrations on free ground surfaces induced by various construction activities. However, they usually do not quantify the aforementioned coupling and floor-to-floor attenuations. An informative guideline is from the Federal Transit Administration (FTA) [8] for assessing the noise and vibration impacts induced by transit projects, which considers many factors, including propagation distances, building foundations, floor numbers, and material damping, as well as speeds, wheel types, rail, and track support system. However, adjustment factors in FTA [8] for these factors are defined as single numbers without considering the different dynamic characteristics of foundations and buildings. Such an oversimplified approach cannot predict vibration very accurately.The authors are grateful for the financial support from the National Key Research and Development Program of China (No. 2019YFB1600700), and the Hong Kong Polytechnic University (Nos. ZE2L, BBWJ, ZVX6, and ZJMV). The findings and opinions expressed in this paper are solely those of the authors and not necessarily the views of the sponsors.
Funding Information:
The authors are grateful for the financial support from the National Key Research and Development Program of China (No. 2019YFB1600700 ), and the Hong Kong Polytechnic University (Nos. ZE2L , BBWJ , ZVX6 , and ZJMV ). The findings and opinions expressed in this paper are solely those of the authors and not necessarily the views of the sponsors.
Publisher Copyright:
© 2022 Elsevier Ltd
PY - 2022/12
Y1 - 2022/12
N2 - As a common construction activity, rock excavation using hydraulic breakers often generates high-level ground- and structure-borne vibrations, which may adversely affect nearby buildings in terms of structural safety, occupant comfort, and ultraprecision equipment functionality. However, building vibrations induced by rock excavation have not been well investigated and understood in the literature. For example, the coupling attenuation at column bases and the floor-to-floor vibration attenuation inside a building have rarely been quantitatively studied. Moreover, traditional dynamic analysis methods in earthquake engineering may not apply to simulations of rock excavation-induced building vibrations. This paper proposed a novel assessment framework based on the mechanical impedance concept, which can quantify the coupling attenuation at column bases and the floor-to-floor vibration attenuation inside a building in a computationally efficient manner. Systematic finite element simulations of rock excavation were performed to characterize vibration propagation in the ground and buildings. The finite element simulations and field measurements successfully verified the accuracy of the proposed prediction formulas, which offers a convenient vibration impact assessment framework to construction practitioners.
AB - As a common construction activity, rock excavation using hydraulic breakers often generates high-level ground- and structure-borne vibrations, which may adversely affect nearby buildings in terms of structural safety, occupant comfort, and ultraprecision equipment functionality. However, building vibrations induced by rock excavation have not been well investigated and understood in the literature. For example, the coupling attenuation at column bases and the floor-to-floor vibration attenuation inside a building have rarely been quantitatively studied. Moreover, traditional dynamic analysis methods in earthquake engineering may not apply to simulations of rock excavation-induced building vibrations. This paper proposed a novel assessment framework based on the mechanical impedance concept, which can quantify the coupling attenuation at column bases and the floor-to-floor vibration attenuation inside a building in a computationally efficient manner. Systematic finite element simulations of rock excavation were performed to characterize vibration propagation in the ground and buildings. The finite element simulations and field measurements successfully verified the accuracy of the proposed prediction formulas, which offers a convenient vibration impact assessment framework to construction practitioners.
KW - Building vibrations
KW - Field measurement
KW - Impedance-based prediction model
KW - Mechanical impedance
KW - Rock excavation
KW - Vibration impact assessment
UR - http://www.scopus.com/inward/record.url?scp=85137041515&partnerID=8YFLogxK
U2 - 10.1016/j.soildyn.2022.107508
DO - 10.1016/j.soildyn.2022.107508
M3 - Journal article
AN - SCOPUS:85137041515
SN - 0267-7261
VL - 163
JO - Soil Dynamics and Earthquake Engineering
JF - Soil Dynamics and Earthquake Engineering
M1 - 107508
ER -