Evaluation of Blasting Influence on the Middle Wall of a Multi-Arch Tunnel
In the construction of large-span and multi-arch tunnel, the advanced middle drift usually is used as the free-face of the tunnel excavating blasting, which has an adverse effect on the middle wall unavoidably. Most of the research focus on the vibration of middle wall and the transmit law of the blasting vibration wave along the middle wall, but little take into account the concrete age of the middle wall. Also in the tunnel construction of III classification rock, the lining construction will lag behind the digging face to stabilize the surrounding rock and avoid the construction interference. Based on the Chenjiaqiao Tunnel of the North Expressway around Whenzhou City, the blasting effect on the middle wall is stimulated by using the software of ANSYS, which analyzes the different vibration effects of the middle wall under the different concrete age conditions.
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Availability:
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Supplemental Notes:
- Copyright © 2011 ASCE
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Corporate Authors:
American Society of Civil Engineers
1801 Alexander Bell Drive
Reston, VA United States 20191-4400 -
Authors:
- Zhang, Qingbin
- Yang, Junsheng
- Wu, Congshi
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Conference:
- GeoHunan International Conference 2011
- Location: Hunan , China
- Date: 2011-6-9 to 2011-6-11
- Publication Date: 2011
Language
- English
Media Info
- Media Type: Web
- Features: Figures; References; Tables;
- Pagination: pp 194-202
- Monograph Title: Tunnel Management, Emerging Technologies, and Innovation
Subject/Index Terms
- TRT Terms: Aging (Materials); Blast loads; Concrete; Tunnels; Vibration; Walls
- Geographic Terms: China
- Subject Areas: Bridges and other structures; Design; Highways; I25: Design of Tunnels;
Filing Info
- Accession Number: 01348004
- Record Type: Publication
- ISBN: 9780784476321
- Files: TRIS, ASCE
- Created Date: Aug 8 2011 2:25PM