Experimental evaluation of geomembrane/geotextile interface as base isolating system

Kalpakci, Volkan; Bonab, A. T.; Özkan, M. Yener; Gülerce, Zeynep

doi:10.1680/jgein.17.00025

Cited by 14 publications

(3 citation statements)

References 17 publications

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“…The CARPI geomembrane is installed and successfully operated on 37 dams from the RCC [5][6][7][8]. It is characterized by high reliability from punctures, water resistance, high drainage capacity and is recommended for use in these dams in ICOLD Bulletin 135 (2010) [9].…”

Section: Vertical Anchorage and Drain-age Of Geomembrane (C)mentioning

confidence: 99%

Innovation structures of very lean roller compacted concrete dams

Lyapichev

2021

Struct. Mech. of Eng. Const. and Build

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Over the past 20 years, rolled compacted concrete (RCC) dams have continued to be built in many countries because of their technical and economic advantages over conventional dams of vibrating concrete and embankment dams. The aim of this study is the development of new structural and technological solutions in RCC dams in order to reduce the consumption of cement and expand their use on non-rock foundations, which will allow them to successfully compete with concrete face rockfill dams. The numerical analyses of static and seismic stress-strain state (SST) of gravitational dams in roller compacted very lean concrete dams have been made, as well as their stability, strength and cost have been assessed. For rock and dense sandy-gravel foundations the most economical is the concrete face rockfill dam and symmetrical RCC dam of very lean concrete with bases (0.5-0.7) of both slopes and outer zones of conventional concrete and central zone of rockfill strengthened by cement-ash mortar. Taking into account that the cost of diversion and spillway tunnels for very lean RCC dam will be less and the construction period - shorter than for the concrete face rockfill dam, it can be concluded that variant of symmetrical RCC dam of very lean concrete is the technically and economically effective. Symmetrical RCC dams of very lean concrete with 1V/(0.5-0.7)H slopes have more seismic resistance and technical and economic efficiency as compared with conventional gravitational RCC dams and other types of dams. These dams up to 200 m high can be built on rock foundations and up to 100 m high - on dense sandy gravel foundations.

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Section: Vertical Anchorage and Drain-age Of Geomembrane (C)mentioning

confidence: 99%

Innovation structures of very lean roller compacted concrete dams

Lyapichev

2021

Struct. Mech. of Eng. Const. and Build

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“…It is desirable to use materials that are readily found in nature and have large reserves. Several types of materials have been tested and researched for GSI applications, including sand and gravel [15][16][17][18][19][20][21][22], sand-bitumen mixtures [23], EPS beads-sand mixtures [24], rubbersoil mixtures (RSMs) gravel-soil mixtures (GRMs) [25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44], geosynthetics [45][46][47][48], and geofoam [49][50][51][52][53][54][55][56][57].…”

Section: Introductionmentioning

confidence: 99%

Application of Pebbles for Geotechnical Seismic Isolation (GSI): Experimental Parametric Study

Banović,

Radnić,

Grgić

et al. 2024

Vibration

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Low-income regions do not have the economic strength to use conventional isolators; therefore, low-cost alternatives are needed. The recent series of earthquakes in Turkey has once again demonstrated the destructive power of this natural disaster and highlighted the need for high-quality earthquake-resistant structures. In this context, a comprehensive experimental parametric study on the use of natural stone pebbles (ASL-1) and stone pebbles in combination with a geogrid layer (ASL-2) as suitable materials for a GSI system is conducted and the main results are presented. The seismic behavior of five different models was tested using four different acceleration diagrams with different peak ground accelerations (PGAs). Characteristic displacements, accelerations, and strains were measured. The results and conclusions presented are based on the integration and synthesis of several previously conducted studies.

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“…The solution is based on the long-term successful experience of involving such systems on similar projects around the world (more than 40 dams). The key benefits are the following [7][8][9]: -Cost reduction for additional preparation and treatment of joints.…”

Section: Introductionmentioning

confidence: 99%

Low-cement content gravity dam as an alternative for Pskem HPP

Aniskin

Shaytanov

Shaytanov³

et al. 2021

E3S Web Conf.

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In this paper, we consider the numerical justification of the possibility to construct a low-cement content concrete gravity dam as an alternative to the traditional solution with a rockfill dam in a Pskem HPP canyon on the river Pskem in Uzbekistan Republic. The calculation studies were performed using the finite element method (FEM), considering the non-linear (elastoplastic) behavior of concrete and foundation rock in the ANSYS software package. Seismic stability of structure was ascertained by means of time-dependent transient dynamic analysis in accordance with the implicit temporal scheme, since such approach allows to trace the development of plastic deformations in the structure and foundation during dynamic loading as well as to evaluate the possible adverse effects. Maximum design earthquake bicomponent accelerogram was involved as an input data for seismic stability analysis. According to the results of the study the conclusions were made about the possibility of construction of a high low-cement content concrete dam in geotechnical, hydrological and climatic conditions of the Pskem HPP site on the Pskem River as well as on the other HPPs of the Chirchik-Bozsu cascade in Uzbekistan Republic, which are now under design. The reported study was funded by RFBR, project number 20-38-90160.

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Experimental evaluation of geomembrane/geotextile interface as base isolating system

Cited by 14 publications

References 17 publications

Innovation structures of very lean roller compacted concrete dams

Innovation structures of very lean roller compacted concrete dams

Application of Pebbles for Geotechnical Seismic Isolation (GSI): Experimental Parametric Study

Low-cement content gravity dam as an alternative for Pskem HPP

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