NOVATEUR PUBLICATIONS JournalNX- A Multidisciplinary Peer Reviewed Journal ISSN No: 2581 - 4230 VOLUME 6, ISSUE 9, Sep. -2020 194 | Page DYNAMIC PARAMETERS DETERMINATION OF CONCRETE TERRACE WALL WITH SYSTEM IDENTIFICATION USING ANN SERTAC TUHTA, Department of Civil Engineering, Ondokuz Mayis University, Turkey FURKAN GUNDAY Department of Civil Engineering, Ondokuz Mayis University, Turkey ABSTRACT: Civil engineering structures have been adversely affected by dynamic effects from past to present. This has always been a problem for civil engineering. Civil engineers strive to design structures to be least affected by dynamic effects. The biggest challenge in these designs is the exact and realistic calculation of the effect of dynamic effects on the structure. There are various methods for calculating the dynamic effects affecting the structures. System identification method is one of the methods used to calculate the responses of the building to the dynamic effects affecting the buildings. On the other hand, today artificial intelligence is used in many areas as well as in system identification method. For these reasons, Artificial Neural Network (ANN) has been used in the system identification method in this study. The system definition was made with a success rate of approximately 0.96 using Terrace Wall as an example model. As a result of this study, The Artificial Neural Network (ANN) approach can provide a very fast and true tool to solve problem in modal identification studies. The Artificial Neural Network (ANN) method can also be used to determine dynamic parameters of structures. KEYWORDS: System Identification, ANN, Dynamic Parameters, Concrete Terrace Wall, Levenberg-Marquardt Algorithm INTRODUCTION: Retaining structures are elements manufactured to limit the movement of the ground under the natural slope angle. Apart from this purpose, for constructive purposes, separation of two different grounds, etc. They are used in situations. Different types of retaining structures have emerged depending on the mechanical properties of the ground. In addition to these mechanical properties, the place of use of the retaining structure to be built (coast, sea, etc.), its purpose (to ensure ground stability, to separate different soils, etc.), environmental conditions (air temperature, humidity, etc.), other nearby structures status, etc. It should be designed by considering the situations (Azarafza et al. 2017). Today, terrace walls are the most preferred retaining structures. There are many reasons why these structures are used frequently. First of all, their project is easy and fast compared to other structures. Size flexibility is unlimited compared to other building types. Many different types of materials can be used (concrete, reinforced concrete, steel, masonry, composite, etc.). They are very successful against many dynamic load types (earthquake, tsunami, blasting, etc.) apart from their main usage purposes. Researchers have done a lot of work on terrace walls. In these studies, terrace walls for different soil types (loose sand, dense sand, clay, etc.) were analyzed using the finite element method Naseri and Behfarnia (2018). Some researchers have examined different types of terrace walls under different soil properties.