Probabilistic design of the steel structure of the new waterway storm surge barrier
conference paper
As part of the sea defence system along the Dutch coast, a storm surge barrier is under construction in the New Waterway, near Rotterdam. The Dutch Ministry of Public Works requires for this structure that the probability of failure is at most 10' per year (104 in life time of 100 years). This is almost equivalent to the target values as stated in the Dutch design codes or Eurocodes, for a life time of 50 years, however. Also, the target values of the present codes of practice are based on a member by member design, but for the storm surge banier the target reliability required is intended for the whole strucrure. Therefore the practical question for the designers is: how should one modify a standard design procedure to meet the additional requirements. The paper discusses a modification of the standard design procedure, which is based on probability based partial safety factors. The result is a set of formulas for the (partial) safety factor to be used by the designers. Although derived formulas are not completely exact, the set can be considered as consistent, logical and practicable.
TNO Identifier
329196
Source title
7th IFIP WG 7.5 Working Conference on Reliability and Optimization of Structural Systems, Boulder, CO, USA, 2-4 April 1996
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