Evaluation of Ice Loads on Bridge Sub-Structures in South Dakota

Pei, Shiling; Wehbe, Nadim I.; Ahrenstorff, Brittney

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Evaluation of Ice Loads on Bridge Sub-Structures in South Dakota

2017-04-30
By Pei, Shiling ; Wehbe, Nadim I. ; Ahrenstorff, Brittney

File Language:

English

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Creators:

Pei, Shiling ; Wehbe, Nadim I. ; Ahrenstorff, Brittney
Corporate Creators:

South Dakota State University
Corporate Contributors:

South Dakota. Department of Transportation. Office of Research ; United States. Department of Transportation. Federal Highway Administration
Subject/TRT Terms:

AASHTO Ice Load Bridge Design Bridge Substructures Dynamic Loads Evaluation And Assessment Ice Ice Impact Icing Statistical Analysis Ice Load
Publication/ Report Number:

SD2010 06 F
Resource Type:

Tech Report
Geographical Coverage:

South Dakota;United States
Edition:

Final Report August 2012 April 2017
Corporate Publisher:

South Dakota. Department of Transportation. Office of Research
Abstract:

A research study was conducted by South Dakota State University in cooperation with the South Dakota Department of Transportation (SDDOT) to assess the applicability of the American Association of State Highway and Transportation Officials (AASHTO) design calculations for the dynamic ice loads on bridge structures in the state of South Dakota. Ice loads were measured at two sites for two consecutive winters (2013 and 2014) using a monitoring system designed and tested in the J. Lohr Structures Lab at SDSU. The sites were selected based on previous ice thickness and strength measurements, water level heights during spring thaw, feasibility of installation, and discussion with SDDOT personnel. The recorded data were analyzed using statistical approaches to develop a probabilistic model of ice impact load level for each site. The distribution of the maximum ice load for both sites over a 75-year period was then estimated. Based on these extreme ice load statistics, reliability indices were determined for the AASHTO formula ice load values. The reliability index showed that current load calculations adopted by SDDOT ensure a reasonably high reliability index for both sites based on the two years of data collected during the study. Thus, a recommendation was made regarding the calculation of small stream ice load in South Dakota using the AASHTO formula. Additional data collection was also recommended for future studies.
Format:

PDF
Funding:

311131
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha-512:15c1a3f4fdc699e62fd02b95b7ef04287e87f317a0f77acac3e79d54c0c0dde766ac1295f01f7d1520943d5773adb2f4e4b1c4881383319564565854f06d9960
Download URL:

https://rosap.ntl.bts.gov/view/dot/77577/dot_77577_DS1.pdf
File Type:

[PDF - 3.42 MB ]

File Language:

English

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