Piled Raft Design Strategies for High Rise Buildings

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• 作者：Meisam Rabiei ; Asskar Janalizadeh Choobbasti
• 关键词：Differential settlement ; Piled raft foundation ; Optimal pile configuration ; Case study design
• 刊名：Geotechnical and Geological Engineering
• 出版年：2016
• 出版时间：February 2016
• 年：2016
• 卷：34
• 期：1
• 页码：75-85
• 全文大小：1,112 KB
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• 作者单位：Meisam Rabiei (1)
  Asskar Janalizadeh Choobbasti (1)
  
  1. Department of Civil Engineering, Babol University of Technology, Babol, Iran
  
• 刊物类别：Earth and Environmental Science
• 刊物主题：Earth sciences
  Geotechnical Engineering
  Hydrogeology
  Terrestrial Pollution
  Waste Management and Waste Technology
  Civil Engineering
  
• 出版者：Springer Netherlands
• ISSN：1573-1529

文摘

Piled rafts have been widely adopted as an effective foundation for designing high-rise buildings because of their efficiency in controlling the total and differential settlements and improving bearing capacity. In many cases the piled rafts settlements are likely to be large, which leads to an increase of the pile length and/or number of piles required to reduce the settlements. However, this increase does not satisfy the design requirements or an economical design. The majority of piled raft foundations has been designed with a uniform pile length and configuration. This paper describes the process of optimizing the design of a piled raft foundation for a high rise building in the Mazandaran province in Iran by considering an economical design methodology in which piles are placed more densely beneath the maximum load positions when the piled raft is subjected to non-uniform loads. By using the ELPLA software in the analysis process, the validity of the software is examined through the results of a report prepared on behalf of Technical Committee TC18 on piled foundations. The study shows that the pile arrangement method can help to considerably reduce the total and differential settlements with similar total pile length as well as the induced bending moments and shear forces of the raft. This study can help practicing engineers to choose pile and raft parameters with the pile arrangement method to produce an economical design. Keywords Differential settlement Piled raft foundation Optimal pile configuration Case study design