Workshop Proceedings: Effect of Earthquake-Induced Transient Ground Surface Deformations on At-Grade Improvements
Abstract/Contents
- Abstract
The objective of this workshop was to address the issue: the extent to which shallow residential building foundations and at-grade improvements (concrete floor slabs, driveways, sidewalks, patios, pool decks) can actually be damaged by an earthquake. There are a number of widely recognized mechanisms for such damage: earthquake-induced ground failure (landslide, liquifaction, lateral spreading, dynamic densification), pre-existing soil conditions that have undermined or stressed improvements (differential settlement and/or heave), inertial forces generated by the superstructure, and various combinations of these factors. However, following the Northridge Earthquake, cracking of pavement and foundations at sites with stable soil (and often little damage to the superstructure) was commonly attributed to transient ground surface deformations during the earthquake.
The questions to be addressed during the workshop were:
- Can the magnitude of earthquake-induced transient ground surface strains at an arbitrary site be reasonably estimated given the current state-of-science?
- If so, what is necessary to develop an efficient methodology to relate common measures of ground motion to the magnitude of the transient ground surface strains?
- If not, what research s needed to develop such capability?
- What is the nature of earthquake-induced transient ground surfcae strains experienced at a given site with stable soil (i.e., no earthquake ground failure)?
-What is the nature of demands (force and deformation) due to earthquake-induced transient ground surface strains on a concrete plate on the ground surface that is the size of a typical residential slab (less than 100ft/30m in any dimension)?
- Is it possible, given the current state-of-science, to identify any correlation between intensity of ground shaking (MMI or instrumental instensity) and potential for damaging earthquake-induced ground surface deformations?
Description
| Type of resource | text |
|---|---|
| Date created | April 2004 |
Creators/Contributors
| Author | Bolt, Bruce |
|---|---|
| Author | Somerville, Paul |
| Author | Abrahamson, Norman |
| Author | Zerva, Aspasia |
| Editor | Gupta, Akshay |
Subjects
| Subject | Shallow Residential Building Foundations |
|---|---|
| Subject | Magnitude Estimation |
| Subject | Current State-of-Science |
| Genre | Technical report |
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Preferred citation
- Preferred Citation
- Bolt, Bruce and Somerville, Paul and Abrahamson, Norman and Zerva, Aspasia and Gupta, Akshay. (2004). Workshop Proceedings: Effect of Earthquake-Induced Transient Ground Surface Deformations on At-Grade Improvements. CUREE Publication Number EDA-04. Stanford Digital Repository. Available at: http://purl.stanford.edu/vc623bs5269
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- jabeec-email@stanford.edu
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