DESIGN OF BORED PILES AND DIAPHRAGM WALL WITH GROUND ANCHOR FOR KEDIRI STADIUM

• Main Author: Patar Matius Sitor, Christopher
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/41490
• Institution: Institut Teknologi Bandung

Kediri Stadium is a soccer stadium which plays role not only as a sport facility, but also as a recreational and art facility. This stadium is located on a 21 hectares land area in Desa Banjarmlati, Kecamatan Mojoroto, Kediri. The stadium is designed with two stories of basement, hence a retaining wall, which is diaphragm wall, is necessary. A poor existing soil layer leads to the necessity of ground anchor as a support system. Beban struktur akan disalurkan ke tanah dengan menggunakan fondasi tiang bor. The structure’s load will be transferred to the hard soil layer by bored pile. Diaphragm wall is designed with 16 m length (8.5 m of excavation) and 0.8 width. It is supported by 3 types of ground anchor which are installed at 3 different elevations. The tip of each anchor is embedded at a soil layer with 26 N-SPT average value. The diaphragm wall and ground anchors are modelled using Plaxis 2D with an objective to derive the factor of safety and the deformation of the wall for each stage of excavation. There are 3 types of bored pile design which are categorized by diameter, length of pile, and reinforcement’s configuration. The axial load capacity of a single pile is obtained by manual calculation, in the other hand the lateral load capacity of a single pile is derived using Ensoft LPILE. Threre are 10 designs of pile configuration and each of pile configuration is modelled using Ensoft GROUP or ETABS to derive the reaction and deformation of each pile due to the working load. The tip of each pile is embedded at hard soil layer so there will be no consolidation occur. Therefore, it is only the elastic settlement which occurs due to the working load that is taken into account. Pile caps and piles are modelled using ETABS or Ensoft GROUP to derive the pile’s reaction that is used as reference to design the reinforcement.