A Conceptual Design of a Cable Stayed Bridge with a Curved Back Span

2011-07-31
Avsar, Ozgur
Caner, Alp
Sarici, Barbaros
The existing Komurhan Bridge was built over the dam reservoir prior to water storage. The aging segmental post-tensioned concrete bridge with two lanes had an active sagging problem at its mid-span. As the traffic demand increased over the years, the authorities decided to add two more lanes to have a twin two-lane road for this part of highway network. Therefore, a need was developed to build a new bridge. Unlike the existing one, the suggested crossing needed to pass 300 meters wide water body with a depth of 45 meters to avoid piers at water body. Couple of alternatives was considered to cross the deep water at conceptual design phase. The focus of this study is given to the conceptual design of a cable-stayed bridge with two towers crossing the water at the narrowest location. This option results in a curved back span at one side of the water. A three-dimensional computer model was developed to assess challenges in design. Special care is given to the design details of the cables and the superstructure. Even if one of the back spans is curved, the proposed conceptual cable-stay bridge design is satisfactory under service and earthquake loads.

Suggestions

A study on the reliability-based safety analysis of concrete gravity dams
Beşer, Mehmet Reşat; Yanmaz, Ali Melih; Department of Civil Engineering (2005)
Dams are large hydraulic structures constructed to meet various project demands. Their roles in both environment and the economy of a country are so important that their design and construction should be carried out for negligibly small risk. Conventional design approaches are deterministic, which ignore variations of the governing variables. To offset this limitation, high safety factors are considered that increase the cost of the structure. Reliabilityاbased design approaches are probabilistic in nature ...
An evaluation of Surgu Dam response during 5 May 1986 earthquake
Ozkan, MY; Erdik, M; Tuncer, MA; Yilmaz, C (Elsevier BV, 1996-01-01)
Surgu Dam, located in southeast Turkey was subjected to longitudinal cracks on the dam crest and simultaneous settlement on the upstream part of the day, during 5 May 1986 Malatya Earthquake. In the following, a brief account of the 5 May 1986 earthquake and the damage occurred in the dam is reviewed, and the results of a dynamic finite element analysis incorporating the non-linear soil properties are presented. It is observed that, a Newmark type permanent displacement analysis carried out under simulated ...
Settlement behaviour of concrete faced rockfill dams : a case study
Özkuzukıran, Rıza Savaş; Özkan, M. Yener; Department of Civil Engineering (2005)
In this study settlement behaviour of Kürtün dam, which is the first concrete faced rockfill dam in Turkey, is investigated. Two dimensional plane strain finite element analyses are carried out in order to determine the total stresses and displacements during construction and reservoir filling conditions. Hardening soil model is used in order to represent the non-linear, inelastic and stress dependent behaviour of rockfill material. Material model parameters are selected mainly referring to the previous stu...
Developing a methodology for the design of water distribution networks using genetic algorithm
Gençoğlu, Gençer; Merzi, Nuri; Department of Civil Engineering (2007)
The realization of planning, design, construction, operation and maintenance of water supply systems pictures one of the largest infrastructure projects of municipalities; water distribution networks should be designed very meticulously. Genetic algorithm is an optimization method that is based on natural evolution and is used for the optimization of water distribution networks. Genetic algorithm is comprised of operators and the operators affect the performance of the algorithm. Although these operators ar...
Investigation, Modeling and Design of a Cathodic Protection System for Hull Structures in Marine Environment
Aksu, R.; Uguz, R. O.; ERDOĞAN, MUSTAFA; Meco, H.; Karakaya, İshak (2016-06-02)
The corrosion behaviors of metallic components from hull structures of an amphibious vehicle in seawater were investigated. Selected steel types and aluminum alloys were subjected to accelerated corrosion tests in artificial seawater to collect data for simulation of cathodic protection with sacrificial anodes. The electrochemical data obtained via potentiostatic tests were used to simulate cathodic protection of the metallic components under seawater. Potential distributions in marine environment were eval...
Citation Formats
O. Avsar, A. Caner, and B. Sarici, “A Conceptual Design of a Cable Stayed Bridge with a Curved Back Span,” 2011, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/38155.