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Analisis Tiga Dimensi Pondasi Tiang-Rakit pada Tanah Lempung, Menteng-Jakarta

Three Dimensional Analysis of Pile-raft Foundations on Clay, Menteng-Jakarta

*Evelyn Jogiadinata  -  Universitas Katolik Parahyangan, Indonesia
Paulus Pramono Rahardjo  -  Universitas Katolik Parahyangan, Indonesia
Aswin Lim  -  Universitas Katolik Parahyangan, Indonesia

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Abstract

Piled-raft foundation is a combination of pile foundation and raft foundation. Bearing capacity of piled-raft foundation yielded from contribution of both pile capacity and raft capacity. Most of the time, design of pile foundation is assumed that all load is solely carried by pile and the capacity of raft is ignored. In this study, three-dimensional finite element analysis was applied to analyze the load percentage that can be carried by raft. A case study, which is located in Central Jakarta, Indonesia, was modeled to investigate this issue. This project was instrumented with two pressure cells where the data were used to verified the model and the load distribution. The analysis results showed good agreement with the measurement data, where the load carried by the raft is around 33-42%.

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Keywords: Piled-raft foundation; load distrubution; 3D finite element method

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