Comparison of the work of various variants of engineering protection structures and their combinations in a seismic area on the example of the object "Engineering landslide protection of the northern slope of the Psekhako ridge"
Comparison of the work of various variants of engineering protection structures and their combinations in a seismic area on the example of the object "Engineering landslide protection of the northern slope of the Psekhako ridge"

Comparison of the work of various variants of engineering protection structures and their combinations in a seismic area on the example of the object "Engineering landslide protection of the northern slope of the Psekhako ridge"

DOI: 10.37153/2618-9283-2021-5-73-86

Authors:  

Afanas’ev Nikita A.

Laboratory № 17 of Soil Mechanics NIIOSP named after N.M. Gersevanov,  JSC Research Center of Construction. Moscow, Russian federation



Rubric:     Seismic safety and seismic isolation of buildings   
Key words: engineering protection, seismic area, dangerous geological processes, mathematical modeling, stability calculation
Annotation:
The paper contains the work of various variants of retaining structures of engineering protection. The paper contains the project "Engineering landslide protection of the northern slope of the Psekhako ridge". The construction site is located in the Adler district of Sochi. The construction area includes the Lower station of the cableway "F" and the retaining Wall-3, which are part of the Gazprom Mountain Resort. The object is located in a seismically dangerous area, which increases the risk of the formation of dangerous geological processes. The requirements for the device of engineering protection measures increase, there is a need for calculations of the structure for seismic impact. The paper considers two types of anti-landslide protection structures – two stages. The first stage is the "Initial state of the object" – the construction of a cableway station, the construction of a retaining Wall-3, the fixing of the slope by anchor fields and the fixing of Wall-3 by anchors through the construction. The second stage is the "Reconstruction of the engineering protection system" – the installation of new retaining walls lower down the slope. Numerical modeling was performed by PLAXIS 2D. The stability calculation was performed for a different combination of engineering protection options, the calculated safety factors were compared with the normalized value of the slope stability coefficient for numerical modeling. In results of the work made conclusions and recommendation.
Used Books:

1)      SP 116.13330.2012 «Inzhenernaya zashchita territorij, zdanij i sooruzhenij ot opasnyh geologicheskih processov»;

2)      SP 14.13330.2018 «Stroitel'stvo v sejsmicheskih rajonah»;

3)      SP 22.13330.2016 «Osnovaniya zdanij i sooruzhenij»;

4)      SP 24.13330.2011 «Svajnye fundamenty»;

5)      SP 63.13330.2012 «Betonnye i zhelezobetonnye konstrukcii»;

6)      GOST 27751-2014 «Nadezhnost' stroitel'nyh konstrukcij i osnovanij»;

7)         VSN 506-88 Proektirovanie i ustrojstvo gruntovyh ankerov

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