Case Studies and Forensic Analysis of Buildings Collapsed Recently in Bengaluru and a Review of Foundation Failures in Delhi
摘要
In recent years Bengaluru city has witnessed a series of building collapses, unsurprisingly in monsoon. The majority of these collapses appear to be due to the failure of the foundation. The high cost of land in urban areas has motivated constructors to build in the vertical direction of the site rather than in the horizontal direction, even on the smallest piece of land to maximize the floor area. In an effort to save some money, land developers have been ignoring proper geotechnical investigation and structural planning before starting construction. This lack of awareness of soil investigation’s importance has led to many building failures in various modes. After studying the forensic research done on case histories of building failures in Delhi, the various modes of building failure have been identified as (i) Lateral soil movement, (ii) Unequal settlement, (iii) Draw down and heave, (iv) Change in water level, etc. This study aims to identify the various reasons for building collapses in Bengaluru city through a forensic geotechnical approach and their remedial measures through suitable ground improvement techniques.