CONDUCTING AND ANALYZING THE RESULTS OF THE EXPERIMENTAL BOX TEST OF RETAINING WALL MODELS WITHOUT PILES AND ON THE PILE FOUNDATION

M. A. Lisnevskyi; V. O. Sukhorskyi

doi:10.15802/stp2015/55344

Authors

M. A. Lisnevskyi Dnipropetrovsk National University of Railway Transport named after Academician V. Lazaryan, Ukraine https://orcid.org/0000-0002-5550-8253
V. O. Sukhorskyi STBU «South-West Railway», Separate Business Unit, Construction of Rail-Road Bridge Administration across the river Dnieper in Kyiv, Ukraine https://orcid.org/0000-0002-9072-9107

DOI:

https://doi.org/10.15802/stp2015/55344

Keywords:

retaining wall, pile foundation, box tests, soil massif, stability and strength of structure, comparative analysis of options

Abstract

Purpose. Taking into consideration that the bearing capacity of the foundation may be insufficient, in the study it is assumed that pile foundation can be used to reduce the impact of the construction of new retaining structures on roads and railways near the existing buildings or in areas of dense urban development and ensure the stability of the foundation. To reduce the volume of excavation it is necessary to choose the economic structure of the retaining wall. To do this, one should explore stress-strain state (SSS) of the retaining walls, to develop methods to improve their strength and stability, as well as to choose the most appropriate method of their analysis. Methodology. In the design of retaining walls foundation mat and piles are considered as independent elements. Since the combined effect of the retaining wall, piles and foundation mat as well as the effect of soil or rock foundation on the structure are considered not fully, so there are some limitations in the existing design techniques. To achieve the purpose the box tests of retaining walls models without piles and with piles for studying their interaction with the surrounding soil massif were conducted. Findings. Laboratory simulation of complex systems «surrounding soil – retaining wall – pile» was carried out and on the basis of the box test results were analyzed strains and its main parameters of the stress-strain state. Analysis of the results showed that the structure of a retaining wall with piles is steady and stable. Originality. So far, in Ukraine has not been carried out similar experimental box tests with models of retaining walls in such combinations. In the article has been presented unique photos and test results, as well as their analysis. Practical value. Using the methodology of experimental tests of the retaining wall models with piles and without them gives a wider opportunity to study stress-strain state of such structures.

Author Biographies

M. A. Lisnevskyi, Dnipropetrovsk National University of Railway Transport named after Academician V. Lazaryan

Dep. «Tunnels, Bases and Foundations», Lazaryan St., 2, Dnipropetrovsk, Ukraine, 49010, tel. +38 (056) 373 15 53

V. O. Sukhorskyi, STBU «South-West Railway», Separate Business Unit, Construction of Rail-Road Bridge Administration across the river Dnieper in Kyiv

Zhylianska St., 97, Kyiv, Ukraine, 01135, tel. +38 (044) 309 66 63

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