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26. Tunnel Design Criteria. - wsscwater.com

Part Three, Section 26. Tunnel Design Criteria COMMON DESIGN GUIDELINES 2015 C-26.4 c) Tunnel diameters for carrier pipe diameters not included in the Standard Details are to be based on ease of installation and maintenance as well as economic considerations, for review and approval by WSSC. e. Minimum Soil Cover.

SEISMIC DESIGN OF THE CUT AND COVER TUNNEL OF THE …

The design of the cut and cover tunnel was based on the performance criteria that the structure must withstand the 1 in 100 year seismic event with no damage, and for the 1 in 475 year event with repairable damage.

Western Harbour Tunnel - Hong Kong's quickest cross ...

The area presented constraints for the road layouts, but these were overcome by a horizontal alignment meeting the required design criteria. 3. Cut-and-cover Tunnel and Sai Ying Pun Ventilation Building

Aseismic Design for Cut-And-Cover Tunnels: Criteria and ...

Aseismic Design for Cut-And-Cover Tunnels: Criteria and Practical ... The present paper is focused on the application of the second type of approach to cut-and-cover tunnel, with

ENGINEERING GROUP CIVIL DESIGN CRITERIA FOR ROAD …

ENGINEERING GROUP CIVIL DESIGN CRITERIA FOR ROAD AND RAIL TRANSIT SYSTEMS E/GD/09/106/A1 Controlled Document A1 Feb ... 7.5.2 Tunnel Size 7.5.3 Design Methods 7.5.4 Flotation and Heave 7.5.5 Longitudinal Stiffness ... 8.4.10 Connections between Bored Tunnels / Cut-and-Cover Tunnels 8.5 DURABILITY

VENTILATION AND ESCAPE FACILITIES FOR SHORT CUT …

VENTILATION AND ESCAPE FACILITIES FOR SHORT CUT-AND-COVER URBAN TUNNELS M. Bettelini, S. Rigert ... Cut and cover tunnel are frequently built in urban environments for mitigating the negative ... 4.1. General objectives and design criteria

Seismic Design of Tunnels - WSP

Seismic Design of Tunnels A Simple State-of-the-Art Design Approach ... Loading Criteria 20 3.0 Running Line Tunnel Design 25 3.1 Overview 27 3.2 Types of Deformations 27 ... Chapter 5 moves to the evaluation of racking effect on cut-and-cover rectangular tunnels. This chapter starts with a review of various methods of analysis that are currently

Design Criteria of Subway Tunnels - ajbasweb.com

Design Criteria of Subway Tunnels 1Vahed Ghiasi, 2Husaini Omar, 3Zainuddin B. Md. Yusoff, ... This paper is dedicated to present criteria and rules for design of metro path including ... In connection of underground tunnel to the cut-and-cover constructed gallery

STUDIES ON SEISMIC DESIGN AND PERFORMANCE …

Seismic response analysis of underground tunnel structures involves selection of seismic input motions based on site-specific seismic hazard assessment and seismic performance criteria, site response analysis, and soil-structure interaction (SSI) analysis. The SEE performance design of the cut-and-cover tunnel structures were based on the 1,000 ...

STRUCTURAL DESIGN CRITERIA DEVILS SLIDE TUNNEL …

Structural Design Criteria for Devils Slide Tunnel – Part I Initial Support I STRUCTURAL DESIGN CRITERIA DEVILS SLIDE TUNNEL PART I - INITIAL SUPPORT Prepared by HNTB Corporation ... design of mined tunnels between cut-and-cover portals, cross passages connecting tunnels, and mined equipment chambers. ...