Bridge design at Deutsche Bahn nM. Sc Alkene Murati DB Rail Academy 15 October 2020Copy-protected Agenda Chapter 1–DB E&C projects Chapter 2–Phases on planning Chapter 3–Preliminary design (Example) Chapter 4–Draft & approval planning (Example) Chapter 5–Summary Copy-protected DB Rail Academy | Bridge Design at Deutsche Bahn | Alkene Murati | 15.10.2020 2 DB E&C Projects/ Chapter 1 Copy-protected DB Rail Academy | Bridge Design at Deutsche Bahn | Alkene Murati | 15.10.2020 3 Bridges Aurachtalbrücke, Route Würzburg Nürnberg Göltzschtalviadukt largest brick bridge in the world Copy-protected DB Rail Academy | Bridge Design at Deutsche Bahn | Alkene Murati | 15.10.2020 4 Bridges Replacement construction S-Bahn-Brücke Julius-Leber-Straße ReplacementCopy-protected construction for viaduct in Ottendorf DB Rail Academy | Bridge Design at Deutsche Bahn | Alkene Murati | 15.10.2020 5 Bridges Bridge insertion of Karower Kreuz Deutschland, Berlin Copy-protected DB Rail Academy | Bridge Design at Deutsche Bahn | Alkene Murati | 15.10.2020 6 Railway stations RegioTram Kassel, Nordhessischer Verkehrsverbund (NVV) RegionalCopy-protected train in the Berlin train station DB Rail Academy | Bridge Design at Deutsche Bahn | Alkene Murati | 15.10.2020 7 Railway stations Chalice supports for the roof structure of the Stuttgart 21 underground station Germany, Stuttgart Chalice supports for the roof structure of the Stuttgart 21 underground station Germany, Stuttgart Copy-protected DB Rail Academy | Bridge Design at Deutsche Bahn | Alkene Murati | 15.10.2020 8 Phases on planning/ Chapter 2 Copy-protected DB Rail Academy | Bridge Design at Deutsche Bahn | Alkene Murati | 15.10.2020 9 Elements of a bridge Bridge is a structure that provides passages over obstacles such as water, valley or road. Copy-protectedSource: Google DB Rail Academy | Bridge Design at Deutsche Bahn | Alkene Murati | 15.10.2020 10 Clasification of bridges Type of superstructure Copy-protectedSource: Google DB Rail Academy | Bridge Design at Deutsche Bahn | Alkene Murati | 15.10.2020 11 Phases on planning The HOAI and procedure based on the fee structure This regulation governs the calculation of fees for basic services provided by architects and engineers (contractors) based in Germany, as far as these basic services are listed in this regulation and performed within the country. Part 1: General Guidelines Part 2: Area Planning Section 1: Land-use Planning Section 2: Landscape Planning Part 3: Project planning Section 1: Buildings and Interiors Section 2: Open Air Facilities Section 3: Civil Engineering Structures Section 4: Traffic/Transportation Installations/Facilities Part 4: Specialist Planning Section 1: Structural Planning Section 2: Technical Equipment Part 5: Transition and Final Provisions Copy-protected DB Rail Academy | Bridge Design at Deutsche Bahn | Alkene Murati | 15.10.2020 12 Phases on ’’Structural planning ’’ 1. Basic evaluation 2. Assisting with the preliminary planning 3. Assisting with the draft planning 4. Assisting with the approval planning 5. Assisting with the execution planning 6. Assisting with the preparation of the tender 7. Assisting with the tendering/awarding process 8. Project monitoring and documentation 9.Copy-protected Project supervision DB Rail Academy | Bridge Design at Deutsche Bahn | Alkene Murati | 15.10.2020 13 Phases on ’’Structural planning ’’ Phase 1: Basic evaluation a) Clarifying the task due to the guidelines and requirement planning of the client b) Determining the framework planning conditions as well as consultation pertaining to the entire service requirements c) Formulation of decision support for the selection of other specialists involved with the planning d) for projects according to § 41, numbers 6 and 7 that require a structural planning: Clarifying the task, also in the field of structural planning e) Site visits f) Summarizing, explaining and documenting the results – Selection and inspection of similar projects *Feasibility study Defined TASK (request from the Client) Plans of the existing bridge Copy-protected(or other structure) DB Rail Academy | Bridge Design at Deutsche Bahn | Alkene Murati | 15.10.2020 14 Phases on ’’Structural planning ’’ Phase 2: Assisting with the preliminary planning (project and planning preparation) a) Analyzing the basics b) Adapting the objectives to the public law constraints as well as the plans of third parties c) Examination of possible solutions and their impacts on architectural and structural design, practicality economic efficiency, taking environmental compatibility into account d) Acquisition and evaluation of official maps e) Development of a planning concept f) Clarifying and explaining the essential subject-specific contexts, processes and conditions g) Pre-coordinating with authorities and other specialist involved with the planning concerning the project's capability of being approved, possibly assisting with negotiations concerning the funding and cost-sharing h) Revision of the planning concept after concerns and suggestions i) Cost estimation, comparison with the financial framework conditions j) Summarizing, explaining and documenting the results – Preparation of comparative calculations for multiple possible solutions under different project conditions – Preparation of a load plan, for example as a basis for the subsoil evaluation and the foundation consultation – Preliminary verifiable calculation of essential supporting parts – Preliminary verifiableCopy-protected calculation of the foundation DB Rail Academy | Bridge Design at Deutsche Bahn | Alkene Murati | 15.10.2020 15 Phases on ’’Structural planning ’’ Phase 2: Preliminary planning - EXAMPLE EÜ Harburger Chaussee Copy-protectedSource: Google Maps DB Rail Academy | Bridge Design at Deutsche Bahn | Alkene Murati | 15.10.2020 16 Phases on ’’Structural planning ’’ Phase 2: Preliminary planning - EXAMPLE EÜ Harburger Chaussee West - View East - View West - View Copy-protected West - View DB Rail Academy | Bridge Design at Deutsche Bahn | Alkene Murati | 15.10.2020 17 Phases on ’’Structural planning ’’ Phase 2: Preliminary planning - EXAMPLE EÜ Harburger Chaussee Longitudinal Section Cross-section Top view Copy-protected DB Rail Academy | Bridge Design at Deutsche Bahn | Alkene Murati | 15.10.2020 18 Phases on ’’Structural planning ’’ Phase 2: Preliminary planning - EXAMPLE EÜ Harburger Chaussee Identification of alternatives (Variants) Copy-protectedTop view DB Rail Academy | Bridge Design at Deutsche Bahn | Alkene Murati | 15.10.2020 19 Phases on ’’Structural planning ’’ Phase 2: Preliminary planning - EXAMPLE EÜ Harburger Chaussee 1st Alternative - RC Frame Advantages Disadvantages ▪ good noise protection ▪ architecturally unsuitable in comparison to ▪ improved street used width, since no nearby bridge structures middle piers ▪ use of a temporary bypass with auxiliary ▪ less maintenance costs (integral bridge: bridge maintaining road traffic, temporary no bearings, no joints) full closures for dismantling Copy-protected▪ blocking of one route per construction phase, one track would always be temporarily moved using a bypass DB Rail Academy | Bridge Design at Deutsche Bahn | Alkene Murati | 15.10.2020 20 Phases on ’’Structural planning ’’ Phase 2: Preliminary planning - EXAMPLE 2nd Alternative – composite precast girders EÜ Harburger Chaussee Advantages Disadvantages ▪ good noise protection ▪ use of a temporary bypass with auxiliary bridge ▪ architecturally appealing solution, maintaining road traffic, temporary full closures for matching the overall concept dismantling ▪ improved street used width, since no ▪ blocking of one route per construction phase middle piers ▪ reduction of the clear height at the edge of the road ▪ less maintenance costs (integral bridge: ▪ renewal of corrosion protection (20-25 years) no bearings, no joints)Copy-protected DB Rail Academy | Bridge Design at Deutsche Bahn | Alkene Murati | 15.10.2020 21 Phases on ’’Structural planning ’’ Phase 2: Preliminary planning - EXAMPLE EÜ Harburger Chaussee 3rd Alternative - support grid Advantages Disadvantages ▪ good noise protection ▪ use of a temporary bypass with auxiliary bridge ▪ optimal harmony with the neighboring maintaining road traffic, temporary full closures for steel trough bridge of the S-Bahn. dismantling ▪ improved street used width, since no ▪ renewal of corrosion protection (20-25 years) middle piers ▪ maintenance costs for bearings and joints ▪ possibility to replaceCopy-protected superstructure alone (since with bearings) DB Rail Academy | Bridge Design at Deutsche Bahn | Alkene Murati | 15.10.2020 22 Phases on ’’Structural planning ’’ 2nd Alternative 1st Alternative 3rd Alternative 4th Alternative Criterias composite precast girders, Frame bridge, deep foundation support grid, deep foundation trough bridge, deep foundation deep foundation Sketch Track position and Gradient + - + -- Visuality -- + ++ ++ Noise protection (barrier) + + + + Influence of the structure on the road ++ - ++ ++ cross-section Construction time / -- - ++ ++ construction method Influence on railway operations over - - 0 0 time logistics - - + + costs were not calculated for this Manufacturing costs + 0 - alternative Maintenance costs ++ + - -- Result - -- Copy-protectedPhase 2: Preliminary planning - EXAMPLE EÜ Harburger Chaussee DB Rail Academy | Bridge Design at Deutsche Bahn | Alkene Murati | 15.10.2020 23 Phases on ’’Structural planning ’’ Phase 2: Preliminary planning - EXAMPLE EÜ Harburger Chaussee Our decision DECISION: ▪ economical alternative