Abstract

On the basis of literature analysis and field investigations it was found that piers in spillway culverts suffer most from the ice impacts. Floating ice is a significant hazard to structures - jamming between piers or rubble pile development will modify the effective size of the structure and possibly increase the loads. Ice loads are generally described as ice forces or pressures acting over an area of structure. Ice loads are classified as: static loads, dynamic loads, global loads, local loads. Local ice loads from ice-structure interaction are highly irregular and very hard to model exact. The aim of this work - to evaluate ice loads formed in the ponds of Lithuania and their impact on the spillway culverts piers structures. The ice loads were analysed in this work: 1) the force of moving ice fields in contact with single pier; 2) the force of standing ice field, in the impact due wind and water drag forces; 3) the force from ice jam cutting by pier; 4) the force of ice jam in the perpendicular contact with structure front, 5) the force, which is cutting pier of the ice plug.DOI: http://dx.doi.org/10.5755/j01.mech.24.3.21067

Highlights

  • Reinforced concrete pier technical state and durability are determined by their impact and loads due to aggressive climatic and aquatic environmental factors

  • Under Lithuanian conditions, the impact of ice on reinforced concrete pier structures has been little studied, but the influence of ice on structures has been studied by a number of foreign scientists

  • The lowest values of the compressive concrete strength are recorded in Marijampolė hydroNo. power plant (HPP), where the technical state of the piers is evaluated as average

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Summary

Introduction

Reinforced concrete pier technical state and durability are determined by their impact and loads due to aggressive climatic and aquatic environmental factors. The detailed ice decomposition mechanics, ice load models (continuum, stochastic, discrete), degradation mechanisms are described in detail in literature [7]

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