Capacity Analysis of Pile Foundations for Bridge Construction: A Case Study of the Surabaya Outer West Ring Road, Station 0 + 400, Surabaya, Indonesia
摘要
Pile foundations are essential for resisting both axial and lateral loads to ensure structural safety and efficiency. In a previous study, the axial and lateral bearing capacities of piles were analyzed using the spring modeling system of the Nakazawa method and SAP2000 software, with a case study at the Surabaya Outer West Ring Road, Station 0 + 400, in Surabaya, Indonesia. The initial model, which used 25 WIKA spun piles with a diameter of 0.6 m and a depth of 16 m, failed to meet capacity requirements as the axial compression load and moment exceeded the material's limits. This study aims to reassess the pile capacity by re-modeling the bridge structure with an increased number of piles and to analyze the pile's structural behavior, including axial compressive load, axial tensile load, shear, moment, deflection, and settlement using SAP2000 software. The results indicate that a design using 35 piles, arranged in a 7 × 5 configuration with a depth of 6 m, successfully withstands the axial compressive and tensile loads, shear forces, and moments. Additionally, it meets the deflection and settlement requirements, achieving a pile efficiency of 81.55%.