טכניון מכון טכנולוגי לישראל
הטכניון מכון טכנולוגי לישראל - בית הספר ללימודי מוסמכים  
M.Sc Thesis
M.Sc StudentZvi Hefets
SubjectResilience of Structures Against Earthquake - Quantitative
Analysis of Costs and Benefites
DepartmentDepartment of Civil and Environmental Engineering
Supervisors Professor Rosenfeld Yehiel
Engineer Schwarz Stephan


Abstract

The Israeli standard which relates to earth-quakes in valid since the eighties, but buildings being built afterwards will be measured because the Israeli standard for earth-quakes emphasizes saving human lives and relates to the economic side, while the earth-quakes hit was unusual at its magnitude and might lead to severe economic results.

This research focuses on handling structure content made for living for being resilient for earth-quakes while emphasizing the full economic side of it. While we are planning the shiver structure as paying attention to economic implications being steamed of it, we must empower the building even beyond the standard, which demands the building being stable long enough to save human lives in case of destruction.

This research scanned the damages costs being attributed to earth-quakes and this according to the single case and not in general. What is the damage caused to a specific building and its residents and not the implications following it on the market; this by observing that preventing the damage at a single building will cause the total damage as reduced.


This research’s method is a supervision of the floor sets and the following damage in each component in the floor in order to identify the components of the floor and the damage being created in each one of them in light of the defined earth-quake. These damage components have structural damages and human and property damages being caused by the building’s floor shifting, according to floor’s shifted perimeter in quantity and size. It is necessary to add a price tag to the single cost of each element and general floor.

The fundamental premise in which the assignment is based on is correct content structure, it is possible to improve the seismic resilience by adding content or work being experienced by incremental add to the new building’s costs. Versus the increase there is the utility of decreasing the expected damages being predicted to the building according to future seismic events which will take place at its occurrence. It is possible to expect an increase in building resilience as a parameter of financial cost, yet this will increase the resilience and utility being expected as a result of decreasing the future damages.

The research’s results show that there are a number of important insights to reduce expenses as a result of the earth-quakes.

Even though the emphasize being given by the Israeli standards for earth-quakes is saving human lives and not saving money, it seems that saving lives leads to much financial saving as shown by the research’s results as a strong earth-quakes causes its collapse and as results hurting people, killed and wounded, their financial value in much higher than any other damage.

Saving as a part of the trade off was lower than the investment’s cost, much of it was accepted at the other way around, money was saved while building the construction and there was a utility at saving the damage being a result of the earth-quake, this way several buildings were more efficient with lower cost.