M51 Kliplev Sønderborg motorvejen

Transcription

1 M51 Kliplev Sønderborg motorvejen A motorway project to be carried out as a Public Private Partnership 1

2 2

3 PART 1 Project description 3

4 Facts about the project The project compromises: 26 km of four-lane motorway between the E45 at Kliplev and the Alssund Bridge at Sønderborg 7 intersections 10 minor roads to be led under/over the motorway 18 km of minor roads to be modified 4

5 Facts 2,90 Mio. m³ Earthworks (mass balance) 0,35 Mio. m³ soft soil 0,90 Mio. m³ Stabilisation 0,90 Mio. m² base layer stabilisation t asphalt (0,80 Mio. m²) t cement & lime m dewatering pipes (PP and Concrete) m slot drain (in-situ) 5

6 Actual Status of the Project Largest Road Construction Side in Scandinavia 350 Skilled Employees >225 Major Construction Machines (20-75to) Works all over the project ongoing Earthworks capacity m³ per day Earthworks will be finished in April 2011 (2,9 Mio. m³) First Intersections is handed over in December 2010 Focus 2011 on Road Crust, CS, Asphalt, Slot Drain Motorway will be definitly finished in spring

7 PART 2 Life Cycle Management Approach 7

8 Functional Design / LCA 8

9 Interfaces Sensitivity Principle of gear wheels 9

10 Process of Pavement Design 10 Process for finding optimum pavement construction is based on holistic approach Collection of relevant data and information Traffic information Climatic information Availability of materials and construction methods Bearing capacity of subgrade and foundation etc. Pavement construction alternatives (draft design) Life Cycle Cost Analysis Investment costs Costs for maintenance Costs for unavailability Performance requirements and prediction Economic assessment and optimization etc. Detailed design of optimum pavement construction(s) 10

11 Pavement Management Process 11 Basics for strategic decisions Inventory Netdata Pavement Traffic Condition Others INPUT OUTPUT Models and requirements Performance prediction Treatments Requirements (framework conditions) Time frame and intervals Basics for recommended construction program 11

12 LCC - Analysis 12 LCC-analysis is state of the art process for managing motorways Finding optimum solution Maximize benefit (monetary, nonmonetary) Minimize costs Maximize savings (in user costs) Maintenance Treatments in accordance with Pavement design Flexible pavement Rigid pavement Semi rigid pavement Requirements 12

13 Life time consideration -> responsibilty M51 Project showed several different approaches LCA must me optimized over all gear wheels it must be sure that the taken design is be best solution for the given system (95%) the system contain not only the pavement: Dewatering, Geometry, Road Furniture, Subsoil works must be taken in consideration not the cheapest solution is the best over the lifetime 13

14 4 major benefits of LCA: evaluation of competing options in purchasing; improved awareness of total costs; more accurate forecasting of cost profiles; and performance trade-off against cost. 14

15 Prioritization Methods 15 Prioritization Methods Subjective prioritization Prioritization according to technical criteria Prioritization according to economic criteria Optimization Method ( Modern PMS ) Characterized by: Performance prediction of pavement condition Combination of different maintenance strategies Optimization of on target value under given preconditions 15

16 LCC-Analysis - Prognosis 16 Core of a modern PMS Prognosis of single technical parameters (PIs) Condition? Cond. Time Use of deterministic and/or probabilistic performance prediction models 16

17 Maintenance Strategies 17 + Pavement Condition - Do-Nothing-Strategy Strategy 1 Strategy 2 Reconstruction Overlay Overlay Age [Year] 17

18 LCC Costs optimisation 18 Assessment of possible design and maintenance strategies during LCC-analysis Bearing capacity (e.g. residual life) Overlay 20 Inlay Bearing capacity (e.g. residual life) 20 Reinforcement 5 Threshold 5 Threshold Time Time Pavement condition (e.g. rutting) Overlay Inlay 20 Threshold Pavement condition (e.g. rutting) Reinforcement 20 Threshold Time Time 18

19 Pavement Management Software 19 19

20 PART 3 Technical Execution M51 20

21 Technical parameters Cross section Homogenius crossfall 30 Overall width Green middle strip (2m) will be a water tight construction 35 cm thick layer of compacted clay with mineral additives. Pavement Design 2.5 cm bitumen-concrete SMA 6+ (with noise reducing surface) 4 cm bituminous binding course ABB 11 8 cm bituminous bearing course GAB cm cement stabilized sand layer 40.5 cm compacted sand layer BL II xx cm lime stabilisation (incl. subsoil grade) Dewatering System In-situ casted slot drain (2 Paradell systems to collect all water) 21

22 Cross Section 22

23 Principles of execution All elements are optimized and crosschecked To improve quality innovative documentation systems are used (2way communication) To improve accuaracy all elements are build in with highest precision (UTS/Totalstation mm) CS Slot Drain Pavement 23

24 Soil Stabilisation 24

25 Logistical System for Cement & Lime 25

26 Dewatering - Slot Drain 26

27 Dewatering - Slot Drain Indikator Enhed Referencesystem Slidserende Differenceværdi Rørledningslængde pr. meter af motorvej [m/m] 3,60 1,75 49% Installationer pr. meter af motorvej [Antal/m] 0,11 0,04 34% Byggeomkostninger pr. meter af motorvej [DKK/m] 4490, ,00 91% Indikator enhed 26 år 50 år Referencesystem [Mio. DKK] 156,97 202,27 Slidserende [Mio. DKK] 140,37 179,67 27

28 Cement Stabilitation CS (hydrophobic) 28

29 Compact Asphalt 29

30 Documentation System Asphalt GPS Mixing Plant (A) Transport (B) Paving (C) 30

31 Documentation System CS Spreader are equipped with weighting systems Spreading information (kg/m²) are combined via GPS to georeferenced datas Output are georeferenced maps and quality control documents Simplification of documentation 31

32 Summary Innovative pavement design is an interdisciplinary issue All elements must be investigated and analyzed Cost saving approach Development of new pavement and construction methods High investments during tender stage Objective Risk Management Use of new and innovative technologies on side 32