A Simple Method of Calculating Safety Vibrating Velocity for Single-Layer Masonry Structures in Blasting Construction

Abstract:

Blasting-induced seismic wave imposes cyclic loadings on adjacent buildings and structures with a combined loading mode of tension, compression, bending, shear and torsion, and it leads to flaking of floated coat, wall cracking, developing of original cracks, etc. This paper presents a blasting case study for the excavation of Wucun tunnel in Xiamen Success Avenue. Field monitoring and numerical calculation of a typical brick masonry structure are adopted to analyze the relationships among the maximum structural displacement, peak vibration velocity of blasting-induced foundation vibration and the change rate of crack width. On the basis of the study above, a method of calculating the safe vibrating velocity for single-layer masonry structure is proposed. Meanwhile, a suggested value of the safe vibrating velocity for single-layer masonry structure is given. All the research results can be useful for the similar construction and research.

• Periodical: Applied Mechanics and Materials (Volumes 353-356)
• Pages: 1907-1913
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.353-356.1907
• Online since: August 2013
• Authors: Xin Ying Ai*, Li Hua Xu, Jia Li Yu
• Keywords: Blasting-Induced Seismic Wave, Crack, Deep Foundation Pit, Masonry Structure, Safety Vibrating Velocity

References

[1] The National Standards Compilation Group of People's Republic of China: Safety Regulations for Blasting (GB6722-2003) (Standards Press of China, Beijing 2004) (In Chinese).

[2] Longjun DONG, Xibing LI, Guoyan ZHAO, etal.: Fisher Discriminant Analysis Model and Its Application to Predicting Destructive Effect of Masonry Structure under Blasting Vibration of Open-pit Mine. Chinese Journal of Rock Mechanics and Engineering, Vol. 28, No. 4 (2009).

[3] Wenhui WEI, Can CHEN: Dynamic Analysis of Masonry Structure by the Action of Blasting Seismic Wave. BLASTING, Vol. 20, No. 3 (2003), pp.8-13 (In Chinese).

[4] Chuxian SHI: Masonry Structure Theory and Design (China Architecture and Building Press, Beijing 2003) (In Chinese).

[5] The National Standards Compilation Group of Peoples Republic of China: Code for Design of Masonry Structures (GB50003–2001) (China Architecture and Building Press, Beijing 2002) (In Chinese).

[6] Weimin QIN, Tiezheng PANG, Hao WANG, etal.: Anylysis of Excavation Monitoring for House Cracking Nearby Deep Pit Foundation. Chinese Journal of Rock Mechanics and Engineering, Vol. 28, No. 3 (2009), pp.533-540 (In Chinese).

[7] Guoqiang LI, Jie LI, Xiaozu SU: Building Structure Aseismatic Desig (China Architecture & Building Press, Beijing 2009) (In Chinese).

[8] Ray Clough, Joseph Penzien: Dynamics of Structures(3rd Edition) (Computers & Structures, Inc., USA 2003).

[9] HU Yuxian: Earthquake Engineering (2nd Edition) (Seismological Press, Beijing 2006) (In Chinese).

[10] Sili Gong: Seismic Design (China Architecture & Building Press, Beijing 1994) (In Chinese).

[11] Chengpeng LIAO: Introduction to Wave Motion Theory in Engineering. (Science Press, Beijing 2003) (In Chinese).