No abstract

In the past 30 years the efforts to protect river beds and banks have increased significantly. The selection and design of proper structural solution means finding a solution in accordance with construction principles, river geomorphology, avoiding channel aggradation, bed scour, bank erosion, resulting structure failure and significant harm to the stream and nearby property. On the other hand, the structure should be environmentally-friendly. Hydraulic structures generally have a strong impact on the environment, so providing ?the right solution? presents a real challenge to engineers.

Abstract. The natural rivers and their flood areas are among the most complex and diverse ecosystems in the world. Traditional structural solutions in river training works are focused on basic requirements as flood protection, littoral zone protection, river bed protection, providing the space for economic development. In this study a method of anticipated assessment of certain physical impact of designed river training works is presented, perceived as global effect of river bed artificialization. The method mainly serves to compare the various possible solutions of river training works, based on the "artificialization parameter" also named "global impact GI".

The stability of eccentrically pressed elements can, according to EC3, be analyzed using methods based on the application of second-order theory as well as firstorder theory methods on models with global imperfections. The stability control of eccentrically pressed elements is performed by means of intercaction formulas on insulated elements, with the buckling length which is determined depending on the boundary conditions and the lateral displacement of the system. The paper presents a detailed analysis of the application of Annex A and Annex B according to EC 3.

Flood control structures play an important role in saving lives and property during floods, especially due to climate change issues. The construction, reconstruction, and rehabilitation of hydraulic structures are compliant with their maintenance and are performed periodically and preventively in order to achieve their required functional safety. However, over the years, investments in flood protection, i.e. the reduction of possible damage caused by the harmful effects of water, mostly implied investments in embankments. Investments in high dams are insufficient in terms of their importance, structure complexity, and failure risk.