Location
San Diego, California
Presentation Date
28 Mar 2001, 4:00 pm - 6:30 pm
Abstract
Effective stress analysis is conducted for six buildings that suffered various patterns of damage during soil liquefaction in the 1995 Hyogoken-Nambu earthquake, in order to examine major causes of the damage as well as the effectiveness of the analytical procedure. A comparison of the computed result with the filed observation indicates that the effective stress analysis is capable of discriminating damaged from undamaged foundations as well as of estimating the damage portion and severity with a reasonable degree of reliability. The analytical result also shows that: (1) the damage to pile heads is mainly due to the inertia force from the superstructure and the damage at depths below the pile head is mainly due to the kinematic force resulting from ground displacements; (2) because of their ductile behavior, steel reinforced concrete piles are immune from extensive damage; and (3) to enclose a pile foundation with diaphragm walls can reduce pile damage but can increase the response of the superstructure as well as the shear force and moment particularly in the lower levels of buildings.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
4th International Conference on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
Publisher
University of Missouri--Rolla
Document Version
Final Version
Rights
© 2001 University of Missouri--Rolla, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Miyazaki, Masanobu; Ishizaki, Sadayuki; and Tokimatsu, Kohji, "Effective Stress Analysis of Pile Foundations Showing Various Damage Patterns in Liquefied Deposits During 1995 Hyogoken-Nambu Earthquake" (2001). International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics. 11.
https://scholarsmine.mst.edu/icrageesd/04icrageesd/session10/11
Included in
Effective Stress Analysis of Pile Foundations Showing Various Damage Patterns in Liquefied Deposits During 1995 Hyogoken-Nambu Earthquake
San Diego, California
Effective stress analysis is conducted for six buildings that suffered various patterns of damage during soil liquefaction in the 1995 Hyogoken-Nambu earthquake, in order to examine major causes of the damage as well as the effectiveness of the analytical procedure. A comparison of the computed result with the filed observation indicates that the effective stress analysis is capable of discriminating damaged from undamaged foundations as well as of estimating the damage portion and severity with a reasonable degree of reliability. The analytical result also shows that: (1) the damage to pile heads is mainly due to the inertia force from the superstructure and the damage at depths below the pile head is mainly due to the kinematic force resulting from ground displacements; (2) because of their ductile behavior, steel reinforced concrete piles are immune from extensive damage; and (3) to enclose a pile foundation with diaphragm walls can reduce pile damage but can increase the response of the superstructure as well as the shear force and moment particularly in the lower levels of buildings.
