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- W657226716 abstract "PILLARS, PILES AND POLES ARE USED FOR MANY PURPOSES: POWER-AND TELEPHONE-LINES, POLES-HOUSES ON FARMS, FOUNDATIONS FOR HOUSES, BRIDGES, ROADS ETC. FREEZING AND THAWING OF THE GROUND HAS HARMFUL INFLUENCE ON THE USEFULNESS AND QUALITY OF SUCH CONSTRUCTIONS. ADFREEZING OF THE SOIL TO THE SURFACE OF THE CONSTRUCTIONS, ALLOWS UPLIFT FORCES FROM THE GROWING OF THE ICE LENSES IN THE FREEZING GROUND TO BE TRANSMITTED TO THE PILLARS, PILES AND POLES. THERE HAS BEEN SOME RESEARCH IN THIS FIELD AIMING AT FINDING THE SIZE OF THE ADFREEZING STRENGTH AND ACCOMPANYING UPLIFT FORCES. THE WORK HAS BEEN DONE IN CANADA, JAPAN, USSR AND NORWAY. SOME EXAMPLES ARE MENTIONED IN THIS ARTICLE, BUT THEY VARY SO MUCH AND ARE FOUND UNDER SUCH VARYING EXPERIMENTAL CONDITIONS THAT THEY ARE NOT YET SUITABLE FOR PRACTICAL USE. THEY GIVE, HOWEVER, A USEFUL IDEA ABOUT THE PHENOMENON. THE GROWTH OF ICE LENSES DURING FREEZING GIVES AN ACCUMULATION OF WATER IN CERTAIN LAYERS IN THE SOIL. WHEN THE ICE THAWS THE RESULT CAN BE A SATURATION OF THE GROUND GREAT ENOUGH TO SPOIL THE BEARING CAPACITY OF THE SOIL. THE UPLIFT FORCES DURING FREEZING DESTROYS STONE-LOCKS AND WEDGES INSERTED IN THE GROUND TO KEEP THE CONSTRUCTION IN PLACE. A HOUSE ON PILLARS ABOVE THE GROUND, CHANGES THE WIND CONDITIONS NEAR THE GROUND AND PREVENTS NATURAL ACCUMULATION OF SNOW UNDER IT. THE FREEZING OF THE SOIL WILL REACH DOWN TO OTHER AND MORE VARYING DEPTHS THAN BEFORE THE HOUSE WAS BUILT. PILLAR AND PILE FOUNDATIONS ARE MORE SENSITIVE TO VARIATIONS IN AMOUNTS OF FROST-HEAVE AND FORCES THAN CONTINUOUS FOUNDATION WALLS. VARIATIONS IN HEAVING HEIGHTS ALONG A WALL WILL BE MORE DANGEROUS WHEN THEY ARE ACTING ON UNCONTINUOUS PILLARS, THAN ON A CONTINUOUS CONCRETE FOUNDATION WALL. VARYING EXPERIENCES REGARDING THE PROBLEMS AND THE WAY OF HANDLING THEM ARE DISCUSSED. TWO APPROXIMATIVE FORMULAS FOR CALCULATING THE ADFREEZING FORCE (BY DALMATOV AND VIALOV) ARE MENTIONED." @default.
- W657226716 created "2016-06-24" @default.
- W657226716 creator A5046588733 @default.
- W657226716 date "1972-12-01" @default.
- W657226716 modified "2023-09-27" @default.
- W657226716 title "PILLARS AND PILES IN THE GROUND FROST PROBLEMS" @default.
- W657226716 hasPublicationYear "1972" @default.
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