Triage method for load rating bridge size two-cell reinforced concrete box culverts for the AASHTO LRFD design load

Hossein Sharifi; Abheetha Peiris; Issam Harik

doi:10.1080/15732479.2021.2015793

Triage method for load rating bridge size two-cell reinforced concrete box culverts for the AASHTO LRFD design load

Hossein Sharifi, Abheetha Peiris, Issam Harik

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

Reinforced concrete bridge size box culverts (RCBCs), with structure length greater than or equal to 6.1 m (20 ft), are an integral part of the transportation infrastructure. Load rating RCBCs is essential, and the critical component is generally the top slab. The objective of this study is to propose a triage methodology to quickly and conservatively determine the rating factor (RF) for the top slab of a two-cell RCBC. The derivation of the demand equations is illustrated in this manuscript for the top slab and the AASHTO HL-93 live load. The finite element program CANDE is used to evaluate the influence of the cell clear height (H), cell clear span (S), fill height (H_F), and the backfill modulus (E) on the demand loads. Multiple regression analyses showed that H had no significant effect on the dead load demands, while H and E had no significant effect to the live load demands. Conservative linear demand equations (LDEs) are presented to calculate the dead and live load demands leading to a quick determination of the RF. LDEs for single and multi-cell culverts can be derived following the LDE procedure outlined herein.

Original language	English
Pages (from-to)	1235-1248
Number of pages	14
Journal	Structure and Infrastructure Engineering
Volume	19
Issue number	9
DOIs	https://doi.org/10.1080/15732479.2021.2015793
State	Published - 2023

Bibliographical note

Publisher Copyright:
© 2021 Informa UK Limited, trading as Taylor & Francis Group.

Funding

Funding for the project was provided by the Federal Highway Administration (FHWA) and the Kentucky Transportation Cabinet (KYTC) through grant FRT 198. The authors are grateful for the guidance provided by Ms. Anne Irish, Ms. Erin Van Zee, Ms. Dora Alexander, Mr. Josh Rogers, and Mr. David Steele of KYTC. The assistance of Dr. Akram Jawdhari with CANDE, and Dr. Charlie Sun, Mr. Aaron Cole, and Mr. Ethan Russel with load testing, is very much appreciated. The authors deeply appreciate the guidance of Dr. Michael G. Katona, the developer of CANDE software.

Funders	Funder number
Federal Highway Administration
Kentucky Transportation Cabinet	FRT 198

Keywords

Box culverts
buried structures
concrete structures
infrastructure
inspection
load rating
loads

ASJC Scopus subject areas

Civil and Structural Engineering
Building and Construction
Safety, Risk, Reliability and Quality
Geotechnical Engineering and Engineering Geology
Ocean Engineering
Mechanical Engineering

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10.1080/15732479.2021.2015793

Cite this

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title = "Triage method for load rating bridge size two-cell reinforced concrete box culverts for the AASHTO LRFD design load",

abstract = "Reinforced concrete bridge size box culverts (RCBCs), with structure length greater than or equal to 6.1 m (20 ft), are an integral part of the transportation infrastructure. Load rating RCBCs is essential, and the critical component is generally the top slab. The objective of this study is to propose a triage methodology to quickly and conservatively determine the rating factor (RF) for the top slab of a two-cell RCBC. The derivation of the demand equations is illustrated in this manuscript for the top slab and the AASHTO HL-93 live load. The finite element program CANDE is used to evaluate the influence of the cell clear height (H), cell clear span (S), fill height (HF), and the backfill modulus (E) on the demand loads. Multiple regression analyses showed that H had no significant effect on the dead load demands, while H and E had no significant effect to the live load demands. Conservative linear demand equations (LDEs) are presented to calculate the dead and live load demands leading to a quick determination of the RF. LDEs for single and multi-cell culverts can be derived following the LDE procedure outlined herein.",

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AU - Harik, Issam

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Y1 - 2023

N2 - Reinforced concrete bridge size box culverts (RCBCs), with structure length greater than or equal to 6.1 m (20 ft), are an integral part of the transportation infrastructure. Load rating RCBCs is essential, and the critical component is generally the top slab. The objective of this study is to propose a triage methodology to quickly and conservatively determine the rating factor (RF) for the top slab of a two-cell RCBC. The derivation of the demand equations is illustrated in this manuscript for the top slab and the AASHTO HL-93 live load. The finite element program CANDE is used to evaluate the influence of the cell clear height (H), cell clear span (S), fill height (HF), and the backfill modulus (E) on the demand loads. Multiple regression analyses showed that H had no significant effect on the dead load demands, while H and E had no significant effect to the live load demands. Conservative linear demand equations (LDEs) are presented to calculate the dead and live load demands leading to a quick determination of the RF. LDEs for single and multi-cell culverts can be derived following the LDE procedure outlined herein.

AB - Reinforced concrete bridge size box culverts (RCBCs), with structure length greater than or equal to 6.1 m (20 ft), are an integral part of the transportation infrastructure. Load rating RCBCs is essential, and the critical component is generally the top slab. The objective of this study is to propose a triage methodology to quickly and conservatively determine the rating factor (RF) for the top slab of a two-cell RCBC. The derivation of the demand equations is illustrated in this manuscript for the top slab and the AASHTO HL-93 live load. The finite element program CANDE is used to evaluate the influence of the cell clear height (H), cell clear span (S), fill height (HF), and the backfill modulus (E) on the demand loads. Multiple regression analyses showed that H had no significant effect on the dead load demands, while H and E had no significant effect to the live load demands. Conservative linear demand equations (LDEs) are presented to calculate the dead and live load demands leading to a quick determination of the RF. LDEs for single and multi-cell culverts can be derived following the LDE procedure outlined herein.

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KW - buried structures

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KW - inspection

KW - load rating

KW - loads

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Triage method for load rating bridge size two-cell reinforced concrete box culverts for the AASHTO LRFD design load

Abstract

Bibliographical note

Funding

Keywords

ASJC Scopus subject areas

Access to Document

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