Seismic Stabilization of Historic Adobe Structures; Final Report of the Getty Seismic Adobe Project

by E. Leroy Tolles; Edna E. Kimbro; Frederick A. Webster; William S. Ginell

• ISBN13: 9780892365876
• ISBN10: 0892365870
• Format: Paperback
• Copyright: 2000-11-30
• Publisher: Oxford University Press, USA
• More Book Details
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Summary

This series presents current research being conducted under the auspices of the Getty Conservation Institute.Describes tests performed on model adobe buildings to evaluate seismic damage mitigation techniques applicable to the retrofitting of historic and culturally significant adobe structures.

Author Biography

E. Leroy Tolles is a structural engineer with ELT & Associates and was principal investigator for GSAP. Edna E. Kimbro is an architectural conservator and historian specializing in the preservation of Hispanic-era buildings and material culture. Frederick A. Webster is a civil engineer who specializes in design, repair, and retrofitting of historic buildings. William S. Ginell is a senior conservation research scientist at the Getty Conservation Institute and was project director of GSAP. Tolles, Webster, and Kimbro are coauthors, with Anthony Crosby, of Survey of Damage to Historic Adobe Buildings after the January 1994 Northridge Earthquake.

Table of Contents

Foreword	ix
Timothy P. Whalen
Preface	xi
William S. Ginell
Acknowledgments	xv
Project Participants	xvii
Background to the Getty Seismic Adobe Project	1	(10)
Getty Seismic Adobe Project Goals and Purpose	1	(1)
Life-Safety Issues for the Seismic Retrofit of Adobe Buildings	2	(1)
Conservation Issues for the Seismic Retrofit of Adobe Buildings	2	(2)
Seismic Performance and Seismic Retrofit	4	(4)
Project Approach	8	(3)
First-year activities
Second-year activities
Third-year activities
Overview and Procedures for Models 1-9	11	(10)
Seismic Retrofit Techniques	11	(2)
Overview of Tests	13	(1)
Description of Materials and Models	14	(3)
Adobe material
Model design and construction
Retrofit measures
Model similitude
Description of Test Procedure 4-6	17	(4)
Test setup
Instrumentation
Simulated earthquake motions
Documentation
Description of Tests for Models 4-6	21	(20)
Description of Models	21	(2)
Model 4 (SL = 5)
Model 5 (SL = 11)
Model 6 (SL = 11)
Test Results for Model 4	23	(5)
Test Results for Model 5	28	(3)
Test Results for Model 6	31	(6)
Summary of Test Results for Models 4-6	37	(4)
Description of Tests for Model 7	41	(12)
Layout of Model 7	41	(1)
Retrofit Measures	42	(3)
Summary of Test Results for Model 7	45	(8)
Description of Tests for Models 8 and 9	53	(20)
Layout of Models 8 and 9	53	(2)
Model 8 Retrofit Measures	55	(3)
Test Results for Model 8	58	(1)
Flexural Test of a Wall Element with Center-Core Reinforcement	58	(1)
Test Results for Model 9	59	(11)
Summary of Test Results for Models 8 and 9	70	(3)
Analysis of Test Results for Models 1-9	73	(16)
Analysis of Model Test Results	73	(13)
Initial crack development (test levels II-IV)
Performance during moderate to strong seismic levels (test levels V-VII)
Performance during very strong seismic levels (test levels VIII-X)
Summary of performance of model buildings
Summary of Field Observations after the Northridge Earthquake	86	(1)
Comparison of Laboratory Results and Field Observations	87	(2)
Description of Tests for Models 10 and 11	89	(14)
Overview of Tests	91	(1)
Materials Tests	92	(1)
Dynamic Testing Procedures	92	(1)
Model Buildings	93	(10)
Test Results and Data Analysis for Models 10 and 11	103	(38)
Model 10---Unretrofitted	104	(7)
Elastic response
Damage progression
Performance and collapse during severe ground motions
Model 11---Retrofitted	111	(8)
Elastic response
Damage progression
Performance during severe ground motions
Loads on Elements of the Retrofit System	119	(15)
Analysis and discussion of results
Comparison of elastic response
Comparison of damage progression
Comparison of performance during severe ground motions
Performance Observations and Summaries	134	(4)
Summary of Comparison of Performance of Small -and Large-Scale Models	138	(3)
Recent Application of GSAP Technology	141	(4)
Summary and Conclusions	145	(4)
Assessment of Retrofit Measures	146	(1)
Relative Model Performance	147	(2)
Suggestions for Future Research	149	(2)
References	151	(2)
Glossary	153	(2)
Bibliography of Publications Resulting from GSAP	155	(2)
About the Authors	157