MANAGEMENT OF CIVIL ENGINEERING INFRASTRUCTURE’S LIFETIME

How do we define a civil engineering infrastructure’s lifetime or durability ?

The lifetime of a civil engineering structure is the period during which it safely fulfils the functions for which it was built, taking into account operating conditions and economic requirements. The prediction (or evaluation) of lifetime, whether when designing new structures or maintaining existing ones, depends on economic and regulatory issues related to both operation and maintenance or renewal.

The criteria governing the lifetime of a civil engineering structure is a complex problem not usually dealt with by the owners. More

How do we implement a strategic and operational scheme for managing a civil engineering infrastructure’s lifetime ?

The definition of an actions plan for ensuring or even for extending a structure’s lifetime requires the definition of a short / medium / long term management strategy for the structure. This strategy depends on the technical information about the current and future functional integrity of the structures, and also on the client’s own strategic objectives. More

OXAND proposes assistance to building owners faced with lifetime and durability management of civil engineering portfolio for all phases of a structure’s life cycle, from sustainable design to lifetime extension issues.

Sustainable life cycle management of LNG infrastructures


What are the definite applications ?

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  • Pre-diagnosis and pre-prognosis for the lifetime extension of LNG storage tanks ;
  • Definition and evaluation of the lifetime of concrete and steel sheet seawater pipes and leads for developing a strategy for the circuit’s management.


    • References :

  • B. ADEY, O. BERNARD, B. GERARD, Risk-based replacement strategies for redundant deteriorating reinforced concrete pipe networks, Proceedings of 17th International Conference on Structural Mechanics in Reactor Technology SMiRT 17, August 2003, Prague, Czech Republic.
  • L. AUGÉ, B. CAPRA, M. LASNE, O. BERNARD, P. BENEFICE and R. COMBY, « Risk management and maintenance optimization of nuclear reactor cooling piping system », Nucperf 2006
  • Sophie CROUIGNEAU, Loïc BOURDON, Yvan BILLARD, Jean-Luc PERSON, Franck SCHOEFS, « Risk analysis to support operation and maintenance of an ageing dockgate for the Port of Marseille Authority », Medachs 2008
  • Jérôme BOERO, Franck SCHOEFS, Bruno CAPRA, Nicolas ROUXEL, « Risk management of French harbours structures: stakes, current practices and needs – Experience feedback of owners », Medachs 2008
  • Humberto YÁÑEZ-GODOY, Franck SCHOEFS, Anthony NOUY, Marc LASNE, « Reliability analysis of two in-service monitored pile-supported wharves during extreme storm loading events », Medachs 2008