Cryopedological Research In The Construction Of Dams Under Severe Climatic Conditions
N .A. Tsytovich and Ya.A. Kronik
U.S. Army Corps of Engineers, Cold Regions Research and Engineering Laboratory
Draft Translation TL-602
February 1977
This article will review some of the initial results of complex cryopedological research based on the physio-chemistry, physics, and mechanics of frozen soils, conducted by the Mechanics of Soils, Bases, and Foundations Section of the Department of Hydraulic Engineering at the V.V. Kuybyshev Moscow Construction Engineering Institute.
Foundations for Structures: Arctic and Subarctic Conditions
UFC 3-130-04
16 January 2004
This manual provides criteria and guidance for design of foundations for structures for military facilities in arctic and subarctic regions.
The design, construction and maintenance of foundations in these environments are all affected by special environmental conditions. These conditions typically include the following, as applicable:
- Seasonal freezing and thawing of ground with attendant frost heaving and other effects.
- Occurrence of permanently frozen ground subject to thawing and subsidence during and following construction.
- Special physical behavior and properties of frozen soil, rock, and construction materials at low temperatures and under freeze-thaw action.
- Difficulty of excavating and handling frozen ground. Poor drainage and possible excess of water during thaw caused by the presence of impervious frozen ground at shallow depths.
- Thermal stresses and cracking. Ice uplift and thrust action. Limited availability of natural construction materials, support facilities, and labor.
- Adverse conditions of temperature, wind, precipitation, distance, accessibility, working seasons, and cost.
While these factors are important in many other types of construction such as pavements and utilities, they merit separate consideration for foundations for structures.
Studies of non-stationary temperature regime of frozen dams made of local materials on permafrost foundations
N.V. Ukhova
U.S. Army Corps of Engineers, Cold Regions Research and Engineering Laboratory
Draft Translation TL-665
November 1977
The specific characteristics of hydraulic engineering construction on permafrost foundations under harsh climatic conditions result in a situation which the most economic type of dam in the regions is the type made o f local materials. A distinction can be made between two methods of constructing dams from local materials on permafrost foundations : the “warm” method , used when construction takes place primarily during the summertime by usual methods , and usually encountered in regions with moderate climates, and “cold,” when construction takes place in winter with stratified freezing o f the entire dam or its individual elements, or in summer, with subsequent freezing of the structure. The frozen part of the dam is intended to make it impermeable to water. Reliable operation of partly or completely frozen dams is determined by t he temperature regime of the construction and the foundation, which must be such that the frozen “curtain” in the dam does not thaw out during the latter’s operation. The dissertation is devoted to an analytical experimental study of the non-stationary temperature regime of frozen dams made of local materials on permafrost foundations, and constitute one aspect of the problem of construction of dams on permafrost foundations, analyzed by the group of coworkers of the department under the leadership of Corresponding Member of the Academy of Sciences of the USSR, Doctor of Technical Sciences, Professor N.A. Tsytovich. The dissertation consists of four chapters.
Using Ice as Water-Impermeable Element in Rockfill Dams
N.A. Tsytovich, V.A. Vesilov and N.V. Styrova
U.S. Army Corps of Engineers, Cold Regions Research and Engineering Laboratory
Draft Translation TL-661
November 1977
This report discusses constructing rock-fill dams with ice cores in the Soviet Union where permafrost soil occurs.
Photo at top courtesy of Benjamin Ennis.
vulcanhammer.net 