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DEVELOPMENT THE FIRST EDITION OF THE DBN.1.1-X:201X «ENGINEERING PROTECTION FOR THE TERRITORIES, BUILDINGS AND STRUCTURES AGAINST LANDSLIDES AND COLLAPSES. BASIC PROVISIONS»

Journal: Academic Journal "Industrial Machine Building, Civil Engineering" (Vol.3, No. 45)

Publication Date:

Authors : ; ; ; ;

Page : 161-171

Keywords : landslide; collapse; engineering protection; engineering survey; class of consequences (responsibility); hollow; strength.;

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Abstract

The first edition of the DBN B.1.1-X:201Х «Engineering protection for the territories, buildings and structures against landslides and collapses. Basic provisions» is developed for replacement of the DBN B.1.1-3-97 «Engineering protection of the territories, buildings and structures against landslides and collapses. Basic provisions». DBN B.1.1-3-97 has been developed twenty years ago approximately and some provisions are outdated and do not meet modern requirements for designing of engineering protection for territories, buildings and structures against landslides and collapses. The article outlines the main changes that have been made in the first edition of the project the DBN. In the first edition of the project the DBN provides the General provisions and requirements for designing, organization of construction and reconstruction of the objects for engineering protection for territories buildings and facilities against landslides and collapses of all kinds and classes of consequences (responsibility), it contains the basic requirements to measures of engineering protection of used objects and materials and to the anti-landslide and anti-collapse structures, to the features of construction and operation when objects designing, to content of the engineering researches and requirements for the environment impact assessment (EIA). The main factors of landslides are follow: an intensive horizontal and vertical relief dissection; presence of the clay soils in the slope strata, such soils easily lose their strength; geotectonic movements of the rocks, their fracturing and inclined layering; area seismic activity; slope strength reducing, which is caused through the processes of soil moistening or drying; erosion and abrasion processes; soil soaking from groundwater; physical and chemical characteristics of the rocks that caused reducing of their strength under the weathering; anthropogenic factors, which are acting on the slope. We make accent on the slopes geotechnical features that associated with depressions. Regime of groundwater in depressions makes significant impact on soil strength, especially loess. Processing of the soil shear test results in logarithmic coordinates allows more accurately determine parameters of soil strength that allows implement method of rapid shear. Such method allows determining follow soil characteristics: structural strength and long-term strength. Engineering protection facilities of the buildings on slopes are follow: retaining walls, pile foundations, deep foundations; fixing of the soil arrays (forcing); foundations that flowing by sliding soil masses; constructions that intercepting sliding masses, geotechnical galleries; coast protecting structures; drainage; slopes top cutting and laying of the soil at the foot of the soil massif; anti-erosion structures; cutting of various banks and backfilling of depressions; Agroforestry. Modern Codes allow perfectly estimating probability of accidents at engineering protection facilities, improving their reliability.

Last modified: 2016-07-25 20:26:37