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Title:

Comparison of US and Chinese Bridge Design Standards for Local Scour Estimation of Bridges Piers

Accession Number:

01659545

Record Type:

Component

Abstract:

This paper presents a comparison study between the design methods for bridge scour used in the engineering practice in the U.S. and China. The influence of flow structure, pier diameter, and sediment size on scour development was firstly analyzed. The design method widely used in the U.S., i.e., the HEC-18 equation, and the design equation by the Chinese national bridge designs standard were compared by use of field data. In total, 796 data collected from field projects have been used to evaluate the accuracy of scour estimation models. Advantages and limitations of these standard scour prediction formulas are discussed. Existing models used by US and China design standards are found to perform unsatisfactorily, especially for large diameter piers. Under such conditions, the equations by the US and Chinese design standards tend to significantly overestimate the scour depth.

Supplemental Notes:

This paper was sponsored by TRB committee AFB60 Standing Committee on Hydrology and Hydraulics. Alternate title: Comparison of U.S. and Chinese Bridge Design Standards for Local Scour Estimation of Bridges Piers

Report/Paper Numbers:

18-04654

Language:

English

Authors:

Wang, Chen
Liang, Fayun
Yu, Xiong (Bill)

Pagination:

18p

Publication Date:

2018

Conference:

Transportation Research Board 97th Annual Meeting

Location: Washington DC, United States
Date: 2018-1-7 to 2018-1-11
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; References; Tables

Geographic Terms:

China; United States

Subject Areas:

Bridges and other structures; Design; Highways; Hydraulics and Hydrology

Source Data:

Transportation Research Board Annual Meeting 2018 Paper #18-04654

Files:

TRIS, TRB, ATRI

Created Date:

Jan 8 2018 11:08AM