摘要: |
Background. A main inspection has been carried out for the Hallands�s railway tunnel, focusing on crack detection and leakage, in the case of rock and cast concrete structures. Project Hallands�s has delivered as built documents in 3D and the tunnel has been laserscanned. It will be scanned at regular intervals, from which 3D data is delivered. Upon receipt, questions arose as to whether information about damage and other remarks can be visualized in 3D and used for maintenance and inspection purposes. This also involves questions about how the documentation is handled and reported in the 3D model. The aim is to, in a pilot study, pinpoint and investigate the need for 3D information needed to facilitate the follow-up and upkeep of maintenance and inspection measures. It will provide a basis for claiming 3D deliveries for this purpose. Setup. In order to delve into the above questions, a preliminary study is made, which at the first stage is concentrated to these areas: TBM, Place cast concrete, Rock, Geo and Environmental aspects, in and around the railway tunnel Hallands�s. All data conserning rail installations is not included. The pilot study contains conditions and opportunities for interconnection with related systems and ongoing projects (BaTMan, BIS, Spirit, GUS, AM ISO55001, CoClass etc.) within the Swedish Transport Administration. Furthermore, the possibilities and needs for developing and reporting inspection data in 3D models are investigated with regard to: types of damage / state class / coding, tolerance levels / error margins, dating / action needs / status labeling, and format. Based on a practical test of presentation and visualization of inspection data in a 3D model, a draft specification is made regarding inspection data that can and should be documented in 3D, including, among other things, the Swedish Transport Administration's publication 1993: 34 "Brochure Manual" as well as the BaTMan's publications concerning inspection of construction works up. Furthermore, routines and requirements for handling laserscanned data in railway tunnels can be obtained where handling of input data; Construction of 3D model, tolerance levels, etc., as well as recommendations for examining and analyzing changes in 3D data over time. |