Abstract
The using of inclined injection piles in an area with high seismic activity is described in this work with the purpose of their application in the construction of various facilities in seismic active areas. In this paper the authors define the possibility of their using for the stability of the slopes and slope construction in the earthquake conditions. The authors analyze sustainability slope both with the use of inclined injection piles and without them. They offer a methodology for determining the embedment of inclined injection piles into the thickness of slope.
Highlights
The using of inclined injection piles in an area with high seismic activity is described in this work with the purpose of their application in the construction of various facilities in seismic active areas
The first: calculation of slope stability using the software PLAXIS 2D showed that: The normative factor of slope stability was not provided below the retaining wall during the combined loads and seismic influence
The second: comparing calculating data of the injection anchor sealing depth in the ground with the actual values of the embedment depth determined that: The actual length of each anchor embedment much higher compared to the estimated for normal operating slope conditions
Summary
CFA piles - a kind of bored piles, the main distinguishing features are: · small diameter - from 0.13 to 0.35 m; · greater flexibility (with a length of piles over 10 m); · used material (cement-sand mixture); · process of molding of the concrete mix after filling the wells with the 0.2-0.4 MPa pressure. In the domestic construction industry CFA piles have appeared in the middle of 1980s. They are mostly used to strengthen the foundations of buildings [1]. It should be noted that in the design of structures using CFA piles mainly used calculation methods for bored piles used in bridge construction. These piles compared to bored piles considerably differed by large diameter and their calculation methodology was quite complex and time-consuming [5, 6]. The authors first conducted a comparative performance evaluation of CFA piles in normal conditions and under seismic activity. As a design tool the authors use the software package PLAXIS 2D, which has demonstrated quite good results in the solution of various problems of soil mechanics [6,7]
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