Performance and capacity assessment of reinforced concrete bridge piers considering the current load and resistance factor design provisions and plastic hinge length in Kansas.

Esmaeily, Asad; Shirmohammadi, Fatemeh; Kansas State University. Transportation Center

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Performance and capacity assessment of reinforced concrete bridge piers considering the current load and resistance factor design provisions and plastic hinge length in Kansas.

2014-05-01
By Esmaeily, Asad ; Shirmohammadi, Fatemeh

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Details:

Creators:

Esmaeily, Asad ; Shirmohammadi, Fatemeh

Esmaeily, Asad ; Shirmohammadi, Fatemeh Less -
Corporate Creators:

Kansas State University. Transportation Center
Subject/TRT Terms:

[+]

Bridge Design Bridge Piers Earthquake Resistant Design Hinges Load Factor Performance Measurement Reinforced Concrete Bridges Retrofitting Serviceability Shear Strength
Publication/ Report Number:

K-TRAN: KSU-11-5
Resource Type:

Tech Report
Geographical Coverage:

Kansas
Corporate Publisher:

Kansas. Dept. of Transportation. Bureau of Materials & Research
Abstract:

Kansas Department of Transportation (KDOT) has implemented the new AASHTO-LRFD provisions in the state specific

LRFD design procedure (KDOT LRFD). Most of the existing bridges constructed before the new provisions, have been designed

based on the old provisions. In this study, these changes have been assessed based on the latest pertinent research, and two

representative bridges, representing state bridges designed and constructed based on the new and old code versions have been

studied and their performance were analyzed considering their real performance and new code revisions.

In general, the two representative bridges provided by KDOT for this study, can safely address the demanded loads

considering their actual strength and bridge structural-redundancy and load redistribution process. So, there is no immediate

concern in terms of serviceability or collapse of these bridges under demanded loads, including the extreme vehicular impact load.

However, the calculated shear strength of most of the columns designed and constructed based on the old codes may not be enough

considering the new vehicular impact load required by the new code revisions.

While no immediate action seems to be necessary in terms of serviceability and safety of these bridges, engineering

judgment and a realistic case-based performance assessment is needed to decide if enhancement of the shear strength and the

amount of lateral reinforcement within the plastic hinge length is necessary. Proper methods to retrofit these types of columns as

detailed in Chapter 4 can be used, once a decision is made for a case to implement the aforesaid enhancement. The case-based

appropriate retrofitting method can be specified for each case considering the column geometry, service load, reinforcement details

and material properties.
Format:

PDF
Funding:

C1883
Collection(s):

University Transportation Centers US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:ca196210fe88e37761c81c06361babc45e0d05e87c9b291466707f3a12758b76
Download URL:

https://rosap.ntl.bts.gov/view/dot/27416/dot_27416_DS1.pdf
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Performance and capacity assessment of reinforced concrete bridge piers considering the current load and resistance factor design provisions and plastic hinge length in Kansas.

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