Precast Concrete Tunnel Lining Bolt and Shear Pockets Hydraulic Review
Publication: Pipelines 2023
ABSTRACT
With the increasing necessity and demand for trenchless construction in urban environments, the use of precast concrete tunnel lining (PCTL) for tunnel boring excavations in select ground conditions has grown due to its ease of installation and increased quality control. For wastewater applications where the PCTL is designed to function as the host pipe, the typical assumed condition for optimal hydraulic performance is to fill all bolt and shear pockets. However, this activity can result in considerable schedule and cost impacts and requires the need to quantify the benefits. A literature review was completed to substantiate roughness coefficients applicable to PCTL acting as a primary liner, and a comparison of common hydraulic equations was performed to provide a sensitivity analysis. Based on the hydraulic performance assessment, not all bolt and shear pockets are recommended to be filled depending on the operational requirements of the wastewater conveyance tunnel.
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Information & Authors
Information
Published In
Pipelines 2023
Pages: 276 - 285
History
Published online: Aug 10, 2023
ASCE Technical Topics:
- Analysis (by type)
- Bolts
- Concrete
- Construction engineering
- Construction methods
- Design (by type)
- Engineering fundamentals
- Engineering materials (by type)
- Environmental engineering
- Fastening
- Geotechnical engineering
- Hydraulic design
- Hydraulic engineering
- Hydraulics
- Linings
- Materials engineering
- Precast concrete
- Sensitivity analysis
- Tunnels
- Wastewater management
- Water and water resources
- Water treatment
Authors
Metrics & Citations
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