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Retrofitting of Severely Seismically...

Hogarth, Kathryn Erika,

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Retrofitting of Severely Seismically Damaged Bridge Piers Using Ultra-High-Performance Concrete (UHPC) /

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Retrofitting of Severely Seismically Damaged Bridge Piers Using Ultra-High-Performance Concrete (UHPC) // Kathryn Erika Hogarth.
作者:	Hogarth, Kathryn Erika,
面頁冊數:	1 electronic resource (345 pages)
附註:	Source: Dissertations Abstracts International, Volume: 85-11, Section: B.
Contained By:	Dissertations Abstracts International85-11B.
標題:	Engineering. -
電子資源:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=31240817
ISBN:	9798382736235

Retrofitting of Severely Seismically Damaged Bridge Piers Using Ultra-High-Performance Concrete (UHPC) /
Hogarth, Kathryn Erika,

Retrofitting of Severely Seismically Damaged Bridge Piers Using Ultra-High-Performance Concrete (UHPC) /Kathryn Erika Hogarth. - 1 electronic resource (345 pages)

Source: Dissertations Abstracts International, Volume: 85-11, Section: B.

The use of Ultra-High-Performance Concrete (UHPC) has been gaining popularity for bridge applications in North America. UHPC has been used in both the construction of new bridges and retrofitting of existing bridges. This research introduces a novel retrofitting method for significantly damaged bridge piers that utilize Concrete-Filled Steel Tubes (CFSTs) in the plastic hinge zone. This research is an extension of the first phase of research, ITD Report 281 (2021), which experimentally and numerically validated the design of the connection. In the first phase of the research, two bridge bents were subjected to quasi-static cyclic loading, to drift ratios beyond Maximum Considered Earthquake (MCE). These same bridge piers are the specimens of interest in phase two. There are a total of four bridge piers evaluated and analyzed in this research, two precast and two cast-in-place (CIP). After being severely damaged in the first phase of testing, each pier is re-aligned and retrofitted using the proposed UHPC jacketing technique and then re-subjected to extreme seismic loading. The design philosophy for the retrofit is to shift the plastic hinge above the damaged region of the column, thus re-instating capacity, stiffness, and ductility of the piers. Through large-scale experimental testing, the proposed UHPC jacketing technique is validated. Experimental results from testing of the piers along with guidelines on retrofitting and construction techniques are presented. A numerical model of the retrofit method is also developed and analyzed for one of the precast specimens. The numerical model is included to predict the performance UHPC jacketing method for CFSTs.

English

ISBN: 9798382736235Subjects--Topical Terms:

586835
Engineering.
Subjects--Index Terms:

Bridge piers

Retrofitting of Severely Seismically Damaged Bridge Piers Using Ultra-High-Performance Concrete (UHPC) /
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653 $a Large-scale testing
653 $a Seismic retrofit
653 $a Ultra-High-Performance Concrete
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