Testing of URM wall-to-diaphragm through-bolt plate anchor connections

Dmytro Dizhur; Shou Wei; Marta Giaretton; Arturo E. Schultz; Jason M. Ingham; Ivan Giongo

doi:10.1177/8755293020944187

Testing of URM wall-to-diaphragm through-bolt plate anchor connections

Dmytro Dizhur, Shou Wei, Marta Giaretton, Arturo E. Schultz, Jason M. Ingham, Ivan Giongo

Center for Transportation Studies

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

5 Scopus citations

Abstract

The presence of effective wall-to-diaphragm connections has been shown to significantly improve the global seismic behavior of unreinforced masonry (URM) buildings. However, despite the importance of such connections, there remains a paucity of experimental research to provide physical validation of current recommendations in design standards and guidelines. The experimental study reported herein included a total of 18 tests which were undertaken in two phases, with Phase 1 testing being undertaken on existing vintage plate anchor connections in an existing URM building and Phase 2 testing involving newly installed plate anchor connections in two additional existing URM buildings. The tested buildings offered variation in material properties, levels of axial load, and wall thickness as test parameters. Attained failure modes and corresponding force-displacement curves are presented herein, as well as comparisons regarding the influence of varying test parameters on the ultimate pull-out capacity. Prediction of plate anchor capacity was undertaken using a basic mechanics approach, and comparisons to current strength recommendations in standards and guidelines are provided.

Original language	English (US)
Pages (from-to)	304-323
Number of pages	20
Journal	Earthquake Spectra
Volume	37
Issue number	1
DOIs	https://doi.org/10.1177/8755293020944187
State	Published - Aug 6 2020

Bibliographical note

Funding Information:
The authors thank the technical staff of the Department of Civil and Environmental Engineering at the University of Auckland for their support and expertise. The authors acknowledge the assistance of Josiah Campbell and Brad Christie throughout the experimental program and with designing the steel frame used in the Whanganui test setup. The authors wish to thank building owners for providing testing opportunities. The authors are also grateful to Christopher Nobach, Stephanie German, and Jazalyn Dukes for their assistance with the reported project. The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This research study was conducted with financial support from the New Zealand Natural Hazards Research Platform and RAPID grant CMMI-1138614 from the U.S. National Science Foundation. Also, this project was partially supported by QuakeCoRE, a New Zealand Tertiary Education Commission-funded Centre publication number 0595.

Funding Information:
The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This research study was conducted with financial support from the New Zealand Natural Hazards Research Platform and RAPID grant CMMI-1138614 from the U.S. National Science Foundation. Also, this project was partially supported by QuakeCoRE, a New Zealand Tertiary Education Commission-funded Centre publication number 0595.

Publisher Copyright:
© The Author(s) 2020.

Keywords

URM earthquake retrofit
Wall-to-diaphragm
pattress plates
plate anchors
through-bolt plate anchor connections

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10.1177/8755293020944187

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title = "Testing of URM wall-to-diaphragm through-bolt plate anchor connections",

abstract = "The presence of effective wall-to-diaphragm connections has been shown to significantly improve the global seismic behavior of unreinforced masonry (URM) buildings. However, despite the importance of such connections, there remains a paucity of experimental research to provide physical validation of current recommendations in design standards and guidelines. The experimental study reported herein included a total of 18 tests which were undertaken in two phases, with Phase 1 testing being undertaken on existing vintage plate anchor connections in an existing URM building and Phase 2 testing involving newly installed plate anchor connections in two additional existing URM buildings. The tested buildings offered variation in material properties, levels of axial load, and wall thickness as test parameters. Attained failure modes and corresponding force-displacement curves are presented herein, as well as comparisons regarding the influence of varying test parameters on the ultimate pull-out capacity. Prediction of plate anchor capacity was undertaken using a basic mechanics approach, and comparisons to current strength recommendations in standards and guidelines are provided.",

keywords = "URM earthquake retrofit, Wall-to-diaphragm, pattress plates, plate anchors, through-bolt plate anchor connections",

author = "Dmytro Dizhur and Shou Wei and Marta Giaretton and Schultz, {Arturo E.} and Ingham, {Jason M.} and Ivan Giongo",

note = "Funding Information: The authors thank the technical staff of the Department of Civil and Environmental Engineering at the University of Auckland for their support and expertise. The authors acknowledge the assistance of Josiah Campbell and Brad Christie throughout the experimental program and with designing the steel frame used in the Whanganui test setup. The authors wish to thank building owners for providing testing opportunities. The authors are also grateful to Christopher Nobach, Stephanie German, and Jazalyn Dukes for their assistance with the reported project. The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This research study was conducted with financial support from the New Zealand Natural Hazards Research Platform and RAPID grant CMMI-1138614 from the U.S. National Science Foundation. Also, this project was partially supported by QuakeCoRE, a New Zealand Tertiary Education Commission-funded Centre publication number 0595. Funding Information: The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This research study was conducted with financial support from the New Zealand Natural Hazards Research Platform and RAPID grant CMMI-1138614 from the U.S. National Science Foundation. Also, this project was partially supported by QuakeCoRE, a New Zealand Tertiary Education Commission-funded Centre publication number 0595. Publisher Copyright: {\textcopyright} The Author(s) 2020.",

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AU - Ingham, Jason M.

AU - Giongo, Ivan

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N2 - The presence of effective wall-to-diaphragm connections has been shown to significantly improve the global seismic behavior of unreinforced masonry (URM) buildings. However, despite the importance of such connections, there remains a paucity of experimental research to provide physical validation of current recommendations in design standards and guidelines. The experimental study reported herein included a total of 18 tests which were undertaken in two phases, with Phase 1 testing being undertaken on existing vintage plate anchor connections in an existing URM building and Phase 2 testing involving newly installed plate anchor connections in two additional existing URM buildings. The tested buildings offered variation in material properties, levels of axial load, and wall thickness as test parameters. Attained failure modes and corresponding force-displacement curves are presented herein, as well as comparisons regarding the influence of varying test parameters on the ultimate pull-out capacity. Prediction of plate anchor capacity was undertaken using a basic mechanics approach, and comparisons to current strength recommendations in standards and guidelines are provided.

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Testing of URM wall-to-diaphragm through-bolt plate anchor connections

Abstract

Bibliographical note

Keywords

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