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Projects : CUREE-Kajima Joint Research Program

Now in our second decade of Kajima-funded projects, the CUREE-Kajima Research Program is a joint venture with the Kajima Corporation of Japan involving collaborative studies among researchers in the US and Japan. The topies researched have spanned many areas, but the theme of inter-university collaboration, and in this case international collaboration, remains the same.

CUREE-Kajima Phase III

STRUCTURAL IMPLICATIONS OF NEAR-FIELD GROUND MOTION

Sponsor: Kajima Corporation
Project Manager/PI: Helmut Krawinkler
Board Overseer: Wilfred Iwan
Duration: 3 years; Sept. 1, 1996-August 31, 1999

Near-field ground motions include large pulses that may greatly amplify the dynamic response of long period structures, particularly if structures are called upon to respond inelastically to earthquake ground motion. Pulses will amplify the maximum interstory drift for elastic structures, and more so for inelastic structures. The amplified interstory drifts may impose excessive deformation demands on elements, which in turn may lead to incremental (P-delta) collapse.

Thus, the need exists for focused research to improve our understanding of near-field ground motions and their effects on structures.

Four projects are in progress or are planned, with the focus on the following objectives:

-- Identify and quantify characteristics of near-field ground motions
-- Achieve an understanding of the effects of large pulses on the response of elastic and inelastic flexible structures
-- Quantify the seismic demands imposed by near-field ground motions on flexible structures
-- Develop techniques for improving the response of flexible structures to near-field ground motions

Published Report - 
CKIII-02: Effects of Near-Field Ground Motion on Building Structures



DECISION SUPPORT TOOLS FOR EARTHQUAKE RECOVERY OF BUSINESSES

Sponsor: Kajima Corporation
Project Manager/PI: James Beck
Board Overseer: Haresh C. Shah
Duration: 3 years; Sept. 1, 1996-August 31, 1999

This project will develop quantitative methodologies and a prototype software package to implement a decision support system that can be used by corporate management as an aid when considering possible earthquake recovery strategies for their business. It will allow management to make better decisions in restoring the state, or health, of their business after a disruptive earthquake by performing complex "what if" analyses to evaluate alternative recovery strategies based on post-earthquake information and previously established goals, including economic and other constraints.

The final products of the project will be an interactive software package to be used as a managerial decision support tool for earthquake recovery of businesses, and a report serving as a user's guide documentation of the methodologies and software design. The principal components of the software package will be a consequence simulation module (the SIMULATOR), a decision evaluator module (the EVALUATOR), and an information display and control module (the MANAGER), together with supporting information databases. Design and coding of the software will be based on an object-oriented approach implemented with C++ to run under Microsoft Windows NT and 95. Its modular object-oriented structure will facilitate development, testing, maintenance, and later extensions.

This project is one in a series conducted under the CUREe-Kajima Joint Research Program and is a coordinated, multi-disciplinary effort by research at two CUREe institutions, Caltech and Stanford.

Published Report - 
CKIII-03: Decision Support Tools for Earthquake Recovery of Businesses


CUREE-Kajima Project
CUREE-Kajima: Phase 6
CUREE-Kajima: Phase 5
CUREE-Kajima: Phase 4
CUREE-Kajima: Phase 3
CUREe-Kajima: Phase 2
CUREe-Kajima: Phase 1
Funded by:
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Consortium of Universities for Research in Earthquake Engineering
last updated 11.11.08