Distribusi Kapasitas Beban Lateral Fondasi Tiang Kelompok Pada Proyek Ikea Store-3 Kota Baru Parahyangan Bandung Barat

Abstract

ABSTRAK
Pada tahun 2019, IKEA membangun toko ketiga yang berlokasi di Kota Baru Parahyangan, Padalarang, Bandung Barat, Jawa Barat seluas 1.250 ha. Fondasi pada strukutur bawah dalam kontruksi ini menggunakan tiang pancang precast. Penelitian ini memodelkan suatu tiang tunggal dan tiang kelompok kelompok konfigurasi 2×2, 3×3, 4×4 dengan jarak antar tiang 2,5D, 3D, 4D dan 5D (D= diameter tiang) yang diberi beban lateral. Perbedaan nilai hasil deformasi lateral dilapangan dan di PLAXIS 3D, saat beban 60 kN sebesar 0,831 mm, sedangkan saat beban 120 kN sebesar 0,005 mm. Berdasarkan hasil PLAXIS 3D diperoleh daya dukung lateral tiang tunggal sebesar 798,581 kN. Perhitungan daya dukung lateral kelompok tiang pada tiang diperlukan nilai faktor efisiensi. Hubungan nilai faktor efisiensi terhadap jarak antar tiang yaitu semakin banyak tiang dalam satu pilecap, maka nilai faktor efisiensi semakin kecil. Hubungan nilai faktor efisiensi terhadap jarak antar tiang yaitu semakin besar jarak antar tiang dalam satu pilecap, maka nilai faktor efisiensi kelompok tiang semakin besar.

ABSTRACT
In 2019, IKEA built a third store located in Kota Baru Parahyangan, Padalarang, West Bandung, West Java covering an area of 1,250 ha. The foundation on the lower structure in this construction uses precast piles. This study modeled a single pile and group pile with a 2 × 2, 3 × 3, 4 × 4 configuration group with a distance between the piles of 2.5D, 3D, 4D and 5D (D = diameter of the pile) which were given lateral loads. The difference in the value of lateral deformation results in the field and in PLAXIS 3D, when the load is 60 kN is 0.831 mm, while when the load is 120 kN it is 0.005 mm. Based on the PLAXIS 3D results, the lateral bearing capacity of a single pile is 798.581 kN. The calculation of the bearing capacity of lateral the pile group on the pile requires the efficiency factor value. The relationship between the value of the efficiency factor to the distance between the piles is that the more piles in one pilecap, the smaller the value of the efficiency factor. The relationship between the value of the efficiency factor to the distance between the piles is that the greater the distance between the piles in one pilecap, the greater the value of the pile group efficiency factor.