Location

Arlington, Virginia

Session Start Date

8-11-2008

Session End Date

8-16-2008

Abstract

In 2006 many engineers run into a difficulty with very rarely phenomenon during the construction of high buildings in exactly determined area to East of Sofia. Large caverns have appeared unexpectedly in the clay on depth of 4÷7m, just under the fundaments. Their volume has been around 3 ÷ 4 m3. There were mean one cavern per 60 m2. Such caverns have revealed as in the time of foundation pit, as under the old buildings. It was found that this is the known from the literature suffusion in clay which is rarely phenomena. The phenomenon has been investigated. It was found that 20 years ago the same problem had been actuated too for our specialists but the final decision has been impeded from the lower level of the technology for investigations. The information has not widespread and now it is forgotten yet. In this report are presented analyses of soil conditions, characteristics of structures, the investigation methods, the technical decisions for soil protection etc.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conference on Case Histories in Geotechnical Engineering

Meeting Name

Sixth Conference

Publisher

Missouri University of Science and Technology

Publication Date

8-11-2008

Document Version

Final Version

Rights

© 2008 Missouri University of Science and Technology, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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Aug 11th, 12:00 AM Aug 16th, 12:00 AM

Soil Protection under High Buildings in Sofia After Revealing of Karsts Caverns in Clay

Arlington, Virginia

In 2006 many engineers run into a difficulty with very rarely phenomenon during the construction of high buildings in exactly determined area to East of Sofia. Large caverns have appeared unexpectedly in the clay on depth of 4÷7m, just under the fundaments. Their volume has been around 3 ÷ 4 m3. There were mean one cavern per 60 m2. Such caverns have revealed as in the time of foundation pit, as under the old buildings. It was found that this is the known from the literature suffusion in clay which is rarely phenomena. The phenomenon has been investigated. It was found that 20 years ago the same problem had been actuated too for our specialists but the final decision has been impeded from the lower level of the technology for investigations. The information has not widespread and now it is forgotten yet. In this report are presented analyses of soil conditions, characteristics of structures, the investigation methods, the technical decisions for soil protection etc.