"Development of a brief code-based seismic diagnostic tool for existing" by Adrian Fredrick C. Dy

Development of a brief code-based seismic diagnostic tool for existing RC buildings considering vertical irregularities

Date of Publication

11-27-2014

Document Type

Master's Thesis

Degree Name

Master of Science in Civil Engineering

Subject Categories

Civil and Environmental Engineering

College

Gokongwei College of Engineering

Department/Unit

Civil Engineering

Thesis Adviser

Andres Winston C. Oreta

Defense Panel Chair

Lessandro O. Garciano

Defense Panel Member

Alden Paul D. Balili
Rodolfo P. Mendoza, Jr.

Abstract/Summary

There are various existing Preliminary Earthquake Risk Assessments such as the FEMA154. These evaluation tools are used to screen existing buildings against potential seismic hazards. Buildings that perform poorly are prioritized for detailed evaluations to determine its condition. Different parameters are considered in the evaluation such as the zoning, soil type, structural system, irregularities, and etc. The evaluation also considers the effects of different building irregularities; however, this evaluation is very simplified. Existing tools are developed especially to suit the conditions of their country like the Philippines. There are five primary types of vertical irregularities as defined by the National Structural Code of the Philippines (NSCP). Existing tools such as the FEMA154 do not specifically distinguish between these different types of irregularity as well as the degree or severity of the irregularity. This study aims to determine the performance of buildings with different irregularities considering the degree of irregularity. Only three types of vertical irregularities will be studied, (1) Vertical Geometric Setback, (2) Soft Story, and (3) Mass Irregularity. A pushover analysis using SAP2000 will be utilized to determine the performance of the building under different irregularity conditions. Due to the limitations of a static pushover analysis, the evaluation form only covers lowrise buildings as permitted by the NSCP. For each type vertical irregularity, an iii irregularity parameter is identified and varied in the push-over analysis. The performance of the vertically irregular buildings will be ranked based on the degree of irregularity as low, medium and high seismic risk. A brief seismic assessment tool will be developed as the final output considering the type and degree of vertical irregularity.

Abstract Format

html

Note

Both Bachelor and Masters thesis

Language

English

Format

Electronic

Accession Number

CDTG005949

Shelf Location

Archives, The Learning Commons, 12F Henry Sy, Sr. Hall

Physical Description

1 computer optical disc ; 4 3/4 in.

Keywords

Reinforced concrete construction; Buildings—Earthquake effects

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Embargo Period

9-6-2023

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