Print Email Facebook Twitter Relationship between the construction costs and the reliability index of quay walls Title Relationship between the construction costs and the reliability index of quay walls Author Wesstein, R. (ARCADIS Nederland) de Gijt, J.G. (TU Delft Hydraulic Structures and Flood Risk; Gemeente Rotterdam) Heeres, O.M. (ARCADIS Nederland) Roubos, A.A. (TU Delft Hydraulic Structures and Flood Risk; Port of Rotterdam Authority) Date 2019 Abstract Structures, such as quay walls, have to meet a particular level of safety. Consequently, in the Eurocode standards, three reliability classes are distinguished, each corresponding to a target reliability index and set of partial factors. In this study, more insight is acquired into the relationship between the quay wall's construction costs and the associated reliability index β. It appeared that the marginal costs of safety investments of quay walls are fairly low and in the same order of magnitude of the uncertainty of the estimate of the construction costs. Hence, it seems that the current reliability classes, as defined in the Eurocode standards, are non-efficient for quay walls. In addition, this study investigates the influence of the partial factors and three failure mechanisms on the construction costs and the reliability index. It was concluded that for the considered cases, the soil's angle of internal friction strongly influences the construction costs and the β of the quay wall. Furthermore, it follows that economic optimisation in the probabilistic design of quay walls is possible by increasing the target reliability index of the failure mechanism 'insufficient passive soil resistance' and decrease the target reliability index of 'yielding of sheet pile profile'. To reference this document use: http://resolver.tudelft.nl/uuid:42c9930f-de07-48ea-b3aa-a7920b20c6f1 DOI https://doi.org/10.1088/1757-899X/615/1/012037 ISSN 1757-8981 Source IOP Conference Series: Materials Science and Engineering, 615 (1) Event 7th International Conference on Euro Asia Civil Engineering Forum, EACEF 2019, 2019-09-30 → 2019-10-02, Stuttgart, Germany Part of collection Institutional Repository Document type journal article Rights © 2019 R. Wesstein, J.G. de Gijt, O.M. Heeres, A.A. Roubos Files PDF Wesstein_2019_IOP_Conf._S ... 012037.pdf 621.64 KB Close viewer /islandora/object/uuid:42c9930f-de07-48ea-b3aa-a7920b20c6f1/datastream/OBJ/view