THE LANDSLIDE SLOPE CONSOLIDATION EXPERIENCE AND URBAN PLANNING PROBLEMS SOLVING

Abstract

The article describes the landslide slopes strengthening practical experience, the complex urban issues solution of the existing historic building of the XIV-XX centuries in the Central part of the city of Mogilev. The difference in the slope marks is more than 27.0 meters in height, and  its length did not provide stability. Surface filtering sandy soils, which include construction waste, have a capacity of up to 14.7 meters. The first signs of landslide processes began to show during the steep slope maintenance.

The slope strengthening had to fit into the existing site harmoniously. The retaining walls combined with a staircase descent erection become the problem decision. This construction was intended to solve the following main tasks: strengthening of the landslide slope, preservation of the historical relief of the old town and the organization of the descent into the Park from Ordzhonikidze square. The project provides the multi-marsh reinforced concrete staircase device in order to ensure the stability of the slope and the implementation of a smooth descent. The slope retention along the staircases and near the observation platforms was carried out by monolithic reinforced concrete retaining walls on a pile foundation. Bored piles cut weak bulk soils and they are rigidly connected with monolithic reinforced concrete grillages.

The retaining walls stability, forces determination, reinforcement selection calculation was performed by the software complex "MicroFE 2013". The bored piles field on vertical pressing load testing,  the retaining walls horizontal and vertical movements were provided in order to control of design prerequisites, ensuring the safety of construction and installation works and operation of the staircase itself. It was found that piles precipitation does not exceed 1.0 cm, which is less than the permissible value of 1.6 cm. This result indicates the adequacy of the bearing capacity of piles for vertical load. The observation of horizontal deformations of retaining walls is continuing nowadays.

Thus, design, construction and installation works scientific and technical support allowed to choose solutions, which ensure the stability of the landslide slope, and to develop economic and safe solutions. The field testing confirmed the correctness of the theoretical assumptions and computational models.