The Jurong Regional Line (JRL) is an elevated future Mass Rapid Transit (MRT) line that will serve the Jurong area and the western part of Singapore. The JRL will serve 24 stations, reaching North to Choa Chu Kang, South to Jurong Pier, West to Peng Kang Hill and East to Pandan Reservoir. This is the seventh MRT line in Singapore and will feature fully automated CJ151 trains and a moving block signalling system for the line.
BG&E is working with a partner to fulfil the Enhanced Accredited Checking Role for the JRL. This includes viaduct packages and working collectively with the LTA and the design and construct teams.
The LTA tendered the works in thirteen design and build packages. The scope of works include providing accredited checking services of the two (J105 and J106) design and build civil contracts. This includes being fully conversant about the civil works, specifically, the viaducts, stabilising structures, retaining walls, buildings and other associated permanent structures, as well as undertaking a detailed review and providing a report.
The key features of this important package are set out below.
- Performing analysis and design reviews with independent calculations on the structural and geotechnical works including but not limited to major and minor structures and elements, connections, deck furniture, all fixings, parapets, railings, permanent noise barriers, claddings and fascia, to confirm the adequacy, stability and integrity of the structural system under various construction sequence and loading conditions, meet the serviceability requirements and comply with the LTA’ specifications.
- Performing a review with independent calculations on the proposed demolition sequence at existing structures or stations, checking the adequacy of the existing structures and the proposed protective and strengthening design works to the existing structures.
- Conducting analysis with independent calculations on the rail viaduct bearing articulation, design loading and movement ranges at movement joints.
- Undertaking serviceability checks, including but not limited to deformation analysis, vibration, with independent calculations for the rail viaduct, retaining walls, buildings and other associated permanent structures where appropriate.
- Reviewing the design on structural detailing, connection details including detailing of reinforcement bars and strengthening details.
- Conduct design review on drainage design, durability performance of the structures including fire protection, waterproofing, accessibility and maintainability, ease of future structural inspections and ease of future bearing maintenance and replacement works.
- Reviewing the method and construction sequence particularly in the aspect of impact to public safety, check the effects of construction load on the permanent structures and construction safety risks, and checking pre-cambering of box girder for balanced cantilever segmental construction.