A PERFORMACE-BASED DESIG APPROACH ITURKISH SEISMIC DESIG CODE FOR PORT STRUCTURES
A new seismic design code is being enforced in Turkey, effective September 1, 2008, for transportation structures officially administered by General Directorate for Construction of Railways, Harbors and Airports (RHA) of Ministry of Transportation. The aim of this contribution is to describe the main aspects of the RHA Seismic Code with special emphasis given to port structures. The most important aspect of the code rests on its main approach incorporating “performance-based design. In this context, port structures have been classified with respect to their expected seismic performance, usage and functional importance, namely, special, nominal, simple and unimportant structures. This is followed by standard definition of performance levels, namely “Minimum Damage Performance Level, “Controlled Damage Performance Level and “Excessive Damage Performance Level prior to state of collapse. On the other hand, design earthquakes have been specified in three levels with probability of exceedance of 50%, 10% and 2% in 50 years, respectively. Minimum performance objectives are then specified for each class of structure under different earthquake levels. Two different classes of design methods have been specified in the code, namely, Strength-Based Design (SBD) and Deformation-Based Design (DBD). The latter includes practice-oriented nonlinear analysis, namely pushover analysis as well as nonlinear response history analysis in the time domain. Acceptance criteria are specified in terms of nonlinear deformation quantities for multi-level performance objectives. In view of a very limited number of seismic codes available for port structures, the new Turkish Seismic Code is expected to attract a special attention with its modern approach.
Port structures seismic code performance-based design deformation-based design performance objectives.
M.uray Aydinogu ülker Yetgin Isihan Güler
Professor,Dept. of Earthquake Engineering,Kandilli Observatory and Earthquake Research Institute,Bog Department Head,Marine Structures Engineering Dept.,Ministry of Transportation,General Directorate f Ph.D.,Department Manager,Coastal Structures Dept.,Yüksel Proje Uluslararas A.S.,Ankara,Turkey
国际会议
14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)
北京
英文
2008-10-12（万方平台首次上网日期，不代表论文的发表时间）