Nikolay Kerenchev

• University of Architecture, Civil Engineering and Geodesy

В много исторически обекти и сгради от недвижимото културно наследство (НКН) са използвани метални обтегачи. Определянето на опънните усилия в обтегачите чрез безразрушителни динамични изпитвания, т.е. с използване на записи на ускоренията от динамичното им реагиране, се усложнява от трудни за дефиниране параметри като опорните (граничните) условия...

This study concerns the impact of the moving loads LM1 on geotechnical structures like embankments and retaining structures related to cut and fill slope problem for road construction and maintenance. In many national standards or recommendations there is a depth dependant reduction factor for live road loads. Bulgarian road infrastructure agency a...

The Foundation of buildings in soft soil such as quaternary clay is often associated with difficult compaction, settlement, non-uniform and /or excessive deformation, and unsatisfactory shear resistance. The present study aims to assess the possibility of using recycled fines from construction and demolition waste, such as mechanically treated gyps...

During the movement of the railway vehicles in the longitudinal direction, are realized chaotic movements in the transverse direction, also. The last lead to the appearance of forces that are transverse to the axis of the road. The actual normative documents for the design of railway bridges indicate different values of these forces, and the differ...

Foundation of buildings in soft soil such as quaternary clay is often associated with difficult compaction, settlement, non-uniform and/or excessive deformation, and unsatisfactory shear resistance. The present study aims to assess the possibility of using recycled fines from construction and demolition waste, such as mechanically treated gypsum an...

The open-source software attracts the engineering society with the accessibility, the chasing of processes, the flexibility and the possibility of making changes to the interface or in the program code processes. This paper presents the results of a comparative review of several groups of open-source software (OSS) for modelling and analysis of con...

From geological point of view tailings dam materials are different compared to regular types of soil. In mechanical aspects it is material that has regular mechanical properties like shear parameters and deformation moduli. Based on the huge expansion of the hardening soil model in the last 20 years, this paper discusses the E50 modulus and its rel...

The forthcoming construction of the Struma motorway which is part of the Pan‐European corridor IV is one of the most challenging geotechnical assignments in Bulgaria nowadays. The road trace is situated in a region of high seismic activity where the topography reveals mostly areas with steep mountain slopes. Geotechnical considerations of the road...

It takes a great effort to estimate the slope stability behavior under dynamic loading. As the classical (limit equilibrium methods are more appropriate for solving static problems, the use of deformation criteria is a better choice for the dynamic loading cases. This research gives comparison between the methods for dynamic slope stability analysi...

This paper presents a numerical study of the deformation properties of a regular pile group foundation frame, which consists of 9 piles with square cross-sections (40/40 cm) and spacing of 1,60 m (axis-to-axis). The length of the piles is 11,0 m and the thickness of the pile cap is 150 cm. Four separate analyses are carried out. Initially the pile...