Location

San Diego, California

Session Start Date

5-24-2010

Session End Date

5-29-2010

Abstract

Parallel to the economic development of Bulgaria in the last nine – ten years there is a rapid raise in construction as well. This increase has been a good precondition for invest in some very high buildings with application of the newest technological achievements. These buildings are situated in the centrums of the largest Bulgarian cities: Sofia, Plovdiv, Varna and Bourgas. The Paper describes the geotechnical preconditions for construction of this type of buildings from seismic risk aspect. These preconditions are divided in four groups: geological, urban, technological and economical. The paper renders an account of the preconditions which are very different in the four cities. Varna and Bourgas have more or less similar conditions because they are situated on the Black Sea coast. The seismic risk for these two cities is relatively smaller. However, the wind pressure from the sea is strong. The geologist profiles of the quaternary period under Sofia are very variegated and the rock basement is to 400m of the depth. Plovdiv is a typical example for the risk of sand liquefaction combined with hay degree of seismic risk. Specific soils around Bourgas are peat and silt clay. Analyzed are the possibilities for application of combined raft – pile foundation, and are chosen and presented different technologies for deep excavation's protection with respect to the geological conditions and the seismic risk. Urban and economical peculiarities of these ancient Bulgarian cities present difficult problems contradictions the aspiration for skyscraper construction.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

Meeting Name

Fifth Conference

Publisher

Missouri University of Science and Technology

Publication Date

5-24-2010

Document Version

Final Version

Rights

© 2010 Missouri University of Science and Technology, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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May 24th, 12:00 AM May 29th, 12:00 AM

Geotechnical Preconditions for Skyscrapers Construction in Bulgaria and Seismic Risk Aspect

San Diego, California

Parallel to the economic development of Bulgaria in the last nine – ten years there is a rapid raise in construction as well. This increase has been a good precondition for invest in some very high buildings with application of the newest technological achievements. These buildings are situated in the centrums of the largest Bulgarian cities: Sofia, Plovdiv, Varna and Bourgas. The Paper describes the geotechnical preconditions for construction of this type of buildings from seismic risk aspect. These preconditions are divided in four groups: geological, urban, technological and economical. The paper renders an account of the preconditions which are very different in the four cities. Varna and Bourgas have more or less similar conditions because they are situated on the Black Sea coast. The seismic risk for these two cities is relatively smaller. However, the wind pressure from the sea is strong. The geologist profiles of the quaternary period under Sofia are very variegated and the rock basement is to 400m of the depth. Plovdiv is a typical example for the risk of sand liquefaction combined with hay degree of seismic risk. Specific soils around Bourgas are peat and silt clay. Analyzed are the possibilities for application of combined raft – pile foundation, and are chosen and presented different technologies for deep excavation's protection with respect to the geological conditions and the seismic risk. Urban and economical peculiarities of these ancient Bulgarian cities present difficult problems contradictions the aspiration for skyscraper construction.