CAUSES OF DEFORMATION OF THE FOUNDATION STRUCTURES OF THE PASSENGER TERMINAL AIRPORT "SOKOL" (MAGADAN)

Abstract

The main purpose of the reconstruction of this airport is to ensure that the engineering infrastructure complies with the modern requirements of air transportation services and transport security. In our opinion, the list of objects of reconstruction, which now includes an apron, lighting equipment, two checkpoints, a system for lighting aircraft parking places, a water supply network, communications, heat, perimeter fencing, etc., must necessarily enter and passenger terminal. While it is not listed. The article deals with the problem of determining the reliability and future operational suitability of the base and foundations of the passenger terminal at the «Sokol Magadan Airport» with a service life of more than 50 years. In this regard, a brief description of the natural conditions of the territory of the specified object is given. The peculiarity of the construction area is its seismicity (up to 8 points), deep seasonal freezing and insular distribution of permafrost soils. The problem is due to the fact that this building, consisting of two independent blocks, each of which was erected in different years on different types of pile foundations, practically began to undergo deformations after their commissioning. These deformations are manifested and manifest now on the external and internal walls in the form of cracks of different sizes. An attempt to determine their causes was made during the construction of the second half of the building, but it coincided in time with the collapse of the USSR, and therefore was not brought to a logical end. The object was put into operation without correcting the existing errors in the foundation device and foundation structures, as well as the necessary strengthening measures in such cases. In the future, it was limited to periodic redecoration and decommissioning of the most dangerous premises for people to visit. The present paper assesses the very difficult natural conditions of the territory (climate, island degrading permafrost, seismic), where the «Sokol Airport» has been operating for more than half a century. During this time, many objects of its engineering infrastructure as a result of negative interaction with the environment have received noticeable physical and moral deterioration. These include the passenger terminal. In this regard, they almost all need modern modernization and reconstruction, especially since «Sokol Airport» has received international status of Federal significance. The article substantiates the need for a geotechnical survey of the base and foundations of a deformable building. The implementation of this work is due to the alleged reprofiling of the problem building under the cargo terminal. The results of the survey will be used in the design of a new passenger terminal.