ICDS12 International Conference DURABLE STRUCTURES: from construction to rehabilitation LNEC Lisbon Portugal 31 May - 1 June 2012 DURABLE STRUCTURES

Transcription

1 International Conference : from construction to rehabilitation BALANCE OF AN INSPTION CYCLE - 21 / HISTORICAL EVOLUTION Luís Ribeiro Freire, Estradas de Portugal Carlos Santinho Horta, Estradas de Portugal

2 International Conference : from construction to rehabilitation Extinction of JAE and JAE-SA and the creation of three institutes - IEP, ICOR and ICERR; Collapse of Hintze Ribeiro Bridge; Merger of IEP, ICOR and ICERR, into a single institute - IEP Instituto das Estradas de Portugal; Contract of Provision and Implementation of a Bridge Management System Conversion of IEP into a public business enterprise, named Estradas de Portugal - E.P.E First bridge inventory, assessed approximately in 5 6 structures; - Beginning of PROPIS Program for Underwater Inspections procedures to update the Inventory and to carry out 5.4 Routine Inspections - 4 procedures to carry out 1.5 Main Inspections - Project aggregations EP E.P.E. is converted into a joint-stock company with public funds, named Estradas de Portugal S.A. - First complete inventory, assessing the entire EP s patrimony in approximately 55 bridges; - First complete assessment of maintenance needs - IR - LN gives its assent to SGOA s premises Creation of DCM Construction and Maintenance Directorate. - Conclusion of the procedures that began in Beginning of the Underwater Inspections campaign to all bridges affected by the 27/28 winter.

3 International Conference : from construction to rehabilitation Strategic decision to do all SGOA activities with internal resources. - DCM gives formation to CO s technical staff about Inventory and Routine Inspections. - Approval of a Training Program in Main Inspections to over 16 Engineers, in coordination with the Ècole Nationale des Ponts en Chaussées Approval of the 2 nd SGOA Manuals Revision, by LN; - Main Inspections done by internal resources; Conclusion of the 1 st Cycle of Main Inspections to the whole set of bridges under EP s responsibility, which started in 26; - Publicizing of the 1 st Procedure to the Service Provision of Complementary Resources of Diagnosis, Testing and Access with Mobile Platforms. - Implementation of SGOC Retaining Walls Maintenance Management System Conclusion of Underwater Inspections Manual ; - Procedure for an Underwater Inspections Campaign 212; - Development of Guides for Bridge Diagnosis; - Beginning of the 1 st Service Provision of Complementary Resources of Diagnosis; - Inspection campaigns for particular bridges -LN; - Updating the computer application GOA.

4 International Conference : from construction to rehabilitation Inventories ário CO s Historical Histó Record rico Information Updating 2 MANAGEMENT MODEL CO s Construction and Maintenance Directorate DCM (DCM) INTERVENTION OBRA Operations Centros Centre Operacionais (CO s) INSPTIONS Ç ÕES Routine Insp. Rotina Insp. Principal Insp. Principais Insp. Underwater Insp. Subaqu Insp. á ticas Damage Insp. deinsp. Dano Special Insp. Especiais Insp. Specific Survey EM GOOD BOM BAD EM MAU PROJTO Direcção Projects de Directorate Projectos SCG Information Maintenance Trabalhos Works de Manuten ção de Reparação Repair Works

5 International Conference : from construction to rehabilitation - The Conservation Management Model allows all information on bridges to be correctly organized and handled, making it a fundamental instrument for the management of these structures; - The Bridge Maintenance Management System consists of a series of activities in constant development and improvement; - The set of activities that belong to the Bridge Maintenance Management System is transversal to the different EP directorates; - The Conservation Management Model is completely integrated in EP s operations, ensuring the reliability of results. 3 BRIDGE MAINTENANCE MANAGEMENT SYSTEM

6 International Conference : from construction to rehabilitation The Bridge Conservation Management System allows a vast knowledge of bridges Conditional Rating through a periodic update of the set of activities that support the system: - The Bridge Inventory consists of Technical, Administrative and Constitutive data and requires permanent updating; - The Routine Inspection is a visual assessment of bridge maintenance needs. When damage detected are considered important, a Main Inspections can be requested; - The Main Inspection is a visual assessment of the safety of all bridge components that, according to their importance, allows the inspector to grade the urgency of the bridge intervention with as indicator factor called Condition Rating; - The Underwater Main Inspection is a visual assessment of the safety of the underwater bridge components, as well as the river bed. 4 SUMMARY OF ACTIVITIES

7 International Conference : from construction to rehabilitation SUMMARY OF ACTIVITIES 4.1 Patrimony Analysis - On December 31, 211, the system database showed 5.29 bridges surveyed in EP s direct management or directly involved in its road network Distribution, by district, of EP bridges or those directly involved in its roads EP Direct Management Interferes with EP roads EP Direct Management Interferes with EP roads

8 International Conference : from construction to rehabilitation Distribution of EP bridges, by type (in December 31, 212) 8 Outras Water Ducts prevails over other types of structures (4%) Passagem Passagem de Passagem Agrícola Peões Hidráulica Passagem Inferior Passagem Superior Distribution of EP bridges, by length (in December 31, 212) Ponte Túnel Viaduto - There s a predominance of bridges with a length lower than 5m (84%). In this set prevail bridges with a length below 1m (55%).

9 International Conference : from construction to rehabilitation Distribution of EP bridges, by deck material type (in December 31, 212) 19% 34% 4% 3% - The predominance of masonry structures is related to the age of the Portuguese road network; - The predominance of concrete structures is related to the reduced length of the bridges that are part of EP s patrimony. 4% 4 SUMMARY OF ACTIVITIES 4.2 Routine Inspections Reiforced Concrete Masonry Precast/Prestressed Concrete Flexible Culverts (ARMCO) Steel and Composite Steel and Concrete

10 International Conference : from construction to rehabilitation Multi-year Routine Inspections Plan In each 2 years cycle, a campaign of Routine Inspections is carried out for all EP bridges st Cycle 2nd Cycle 3rd Cycle Main Inspections carried out as a result of the Routine Inspections requests The request of a Main Inspections usually results from an alert situation in a Routine Inspection; - Main Inspections are only carried out when its anticipation is justified; - Following the Main Inspections, a great amount of interventions have been carried out, preventing a more severe evolution of detected damage st Cycle Routine Inspections Principal Inspection Requests Confirmed Requests 2nd Cycle

11 International Conference : from construction to rehabilitation SUMMARY OF ACTIVITIES 4.3 Main Inspections Distribution or Main Inspections done by internal and external resources 349 Internal Meios Internos Resources - Since June 21, all Main Inspections to ordinary bridges are done by EP s technical staff; In 211, the first cycle of 5 years ended, with all EP bridges assessed; - The second cycle of Main Inspections will start in 212 and will last until 216. In this period of time, almost 5.15 bridges will be inspected; - For the planning of this second cycle a great number of new bridges will be added to EP s patrimony duo to the incorporation of Grande Lisboa and Douro Litoral concessions Outsourced Contratação Externa

12 International Conference : from construction to rehabilitation Multi-year Main Underwater Inspections Plan Main Underwater Inspections are held every 4 years in approximately 15 bridges 1º ciclo which foundations 2º ciclo are permanently under water; - These Inspections are carried out in a 2 years cycle, when and where needed; 24 - To date, an Underwater Inspections Manual is being developed, to increase the technical knowledge about the behavior of bridge underwater components st Cycle 21 2nd 211 Cycle Condition Rating of EP Bridges 14,75% 14% 54,9% 3,9%,52%,74% 85 - At the end of 29, the percentage of bridges with 4 and 5 was 6%. This percentage decreased to a value of 4,42%, in the end of At the end of 211, the percentage of 3 was 14,75%. It follows that almost 8,83% of bridges are considered in a Very Good or Good condition. 26,%

13 International Conference : from construction to rehabilitation 4 SUMMARY OF ACTIVITIES 4.4 Interventions in bridges with Condition Ratings of 4 e Progress in solving 4 and 5 detected Por Unsolved resolver/acumulado / cumulative Detected Detectadas/acumuladas / cumulative Previsão Solution de in resolução hand Resolvidos/acumulados Solved / cumulative The diagram shows the number of bridges with 4 and 5 detected in Main Inspections. - It also shows the number of bridges with Solved situations, due to the conclusion of its intervention, or due to the fact that they were transferred to other organization or were deactivated. - Per year the diagram shows the number of Bridges with Unsolved situations transfer from the year before

14 International Conference : from construction to rehabilitation Annual distribution of studies and projects of EP bridges Bridges Obras de arte with com Project projecto The study combines projects of several bridges located in the same area, with similar damages and identical intervention priority. - To date a study on all Foot Bridges is under development. Due to their particular dimension and need of strategic analysis, this study will allow the planning and prioritization of interventions Repaired Reabilitadas Intervenção Priority temporary prioritária intervention provisória Estudos Studies Annual distribution of interventions in EP bridges e and Until 21, over 333 interventions were performed. - Until 214, over 447 interventions are expected to be performed. - Until 215, all bridges with 4 and 5 are expected to be solved, for most of them are planned to be intervene in 212 and

15 International Conference : from construction to rehabilitation Absolut Amounts of the Operational Investment 495,9 Bridge Benef. Repair/ /Requal. Rehabilitation Obras Arte Network Periodic Conservation 55,4 - Until 27 - Amounts including taxes. - Since 28 - Amounts without taxes, due to EP s new legislative framework; Cons. Periódica Cons. Network Corrente Continuous Construction Construçãoof new Total Operacional TOTAL Maintenance roads and bridges 49,5 414,3 392,2 37,2 355, 321,6 338,5 326,4 288,3 262,1 256,3 236,6 222,8 25,4 26,9 176,3 149,3 159,4 ( T.O. ) 137,5 127, 116,2 11,2 9,1 77,6 94,6 76,7 87,4 92,3 54, ( O.A. ) 22, 27,4 36,7 43,1 41,7 55,1 38,2 4,8 39,4 65,4 52, ( C.C. ) 41,5 37,2 ( Cst. ) 3, 3,8 3,5 13,6 16,6 17,9 17,2 33,1 31,6 25,8 16,2 ( C.P. ) Summarizing, the amounts due to bridge requalification and common conservation have been increasing, due to EP s campaign to preserve its patrimony Operational Investment Analysis Bridge Repair/ Rehabilitation,6%,9%,8% Network Periodic Conservation 2,7% 4,2% 5,% 5,2% Network Continuous Maintenance 11,5% 8,5% Construction of new roads and bridges 11,6% 33,9%

16 International Conference : from construction to rehabilitation 5 PLANNING FOR THE FUTURE The future in the Bridge Conservation Management domain: Strategic Planning Technical Developments Management Planning

17 International Conference : from construction to rehabilitation Strategic Planning: Updating the computer application where the Bridge Maintenance Management System is based on, with the aim of: Developing the Inspections Planning; Integrate the evolutional improvements of SGOA; Highlight all the information concerning the Inventory and the Inspections; Access and registration control of changed information; Development of Pivot Tables, to allow the selections of results according to the persuade objectives; Flexibility, fitting the management needs of EP; SGOA s integration and interaction with other EP s computer applications, such as Gestão Documental, SIG, Planeamento. Technical Developments: Continue the technical training of Inspectors to introduce skills that increase their ability of making a proper assessment of bridges safety conditions. Pursuit the development and improvement of Manuals and the System support documentation. Management Planning: Believe in a technical and financial support to keep a cycle of preventive interventions (3 to 5 years) progressively decreasing the reactive interventions (1 to 2 years). Integrated management of the different management systems developed in EP for other structures, such as SGOA, SGPAV, SGOC.

18 International Conference : from construction to rehabilitation SGOA BALANCE OF AN INSPTION CYCLE - 21 / 211