Residual Strain in a Reservoir Ice Cover : Field Investigations, Causes, and Its Role in Estimating Ice Stress

Show simple item record

dc.contributor.author Huang, Wenfeng
dc.contributor.author Li, Zhijun
dc.contributor.author Leppäranta, Matti
dc.contributor.author Han, Hongwei
dc.contributor.author Wang, Ni
dc.date.accessioned 2018-10-02T10:53:01Z
dc.date.available 2018-10-02T10:53:01Z
dc.date.issued 2018-08
dc.identifier.citation Huang , W , Li , Z , Leppäranta , M , Han , H & Wang , N 2018 , ' Residual Strain in a Reservoir Ice Cover : Field Investigations, Causes, and Its Role in Estimating Ice Stress ' , Journal of Hydraulic Engineering (New York) , vol. 144 , no. 8 , 04018048 . https://doi.org/10.1061/(ASCE)HY.1943-7900.0001488
dc.identifier.other PURE: 115592619
dc.identifier.other PURE UUID: 9d459b08-5b48-4b5c-add1-f85a6f3e692f
dc.identifier.other WOS: 000443504700008
dc.identifier.other Scopus: 85047876435
dc.identifier.uri http://hdl.handle.net/10138/246371
dc.description.abstract Ice strain dominates the ice thrust and dynamics on reservoir dams and retaining structures. An exclusively designed laser range finder was deployed to measure the surface ice displacements along six directions at a reservoir in northeastern China. The incompletely confined boundary (ice-boundary bonding), ice cracks development, water level fluctuations, parallel crack dynamics, and ice creep allow the surface ice to move rather than keep still in response to thermal deformation/pressure, and thus cause the ice strain to deviate from thermal strain. Consequently, a residual strain was introduced and calculated from the recorded displacements. Observations showed that the residual strains were anisotropic and showed diurnal patterns following the air/ice temperature. A scale-dependence of crack development was observed to cause potential scale-effects to residual strains. The real ice strain consists of thermal strain and residual strain. The proportion of the latter increased as time went by. A modified constitutive law accommodating the residual strains was developed to evaluate the impacts of the residual strains and to estimate the surface ice stresses. Modeling results underlined the role of the residual strain in determining both the principal stress and the stress perpendicular to and parallel with the dam face. The residual strain is probably the reason why the observed ice stress is always much lower than the single thermal stress. (C) 2018 American Society of Civil Engineers. en
dc.format.extent 12
dc.language.iso eng
dc.relation.ispartof Journal of Hydraulic Engineering (New York)
dc.rights unspecified
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject Thermal strain
dc.subject Residual strain
dc.subject Constitutive law
dc.subject Static ice loads
dc.subject Reservoir ice
dc.subject PRESSURES
dc.subject CANADA
dc.subject LOADS
dc.subject DAM
dc.subject 114 Physical sciences
dc.title Residual Strain in a Reservoir Ice Cover : Field Investigations, Causes, and Its Role in Estimating Ice Stress en
dc.type Article
dc.contributor.organization Department of Physics
dc.description.reviewstatus Peer reviewed
dc.relation.doi https://doi.org/10.1061/(ASCE)HY.1943-7900.0001488
dc.relation.issn 0733-9429
dc.rights.accesslevel openAccess
dc.type.version acceptedVersion

Files in this item

Total number of downloads: Loading...

Files Size Format View
Wenfengetal_JHE_2018.pdf 4.501Mb PDF View/Open

This item appears in the following Collection(s)

Show simple item record