STUDI PERENCANAAN PONDASI TIANG DAN ABUTMENT JEMBATAN PADA PEMBANGUNAN JEMBATAN KANOR - RENGEL BOJONEGORO ( STA 0+400 - STA 0+575 )

The Kanor Bridge in Bojonegoro Regency has a total span of 262 meters, divided into three main spans. This thesis focuses only on a 95-meter section. The superstructure of the bridge uses prestressed concrete girders (PCI Girder) for the main span and steel beams for the shorter spans. The substructure consists of abutments, piers, and deep foundations in the form of concrete piles with a diameter of 60 cm. In this planning, modifications were made to the pile dimensions and foundation depth. The foundation design was carried out by considering the existing soil conditions, which are dominated by silty and sandy clay, based on SPT (Standard Penetration Test) results up to a depth of 40 meters. The structural planning and load analysis refer to SNI 1725-2016 and local soil data.
The abutment section uses a floating-type abutment on soil and is supported by spun pile foundations with a diameter of 600 mm and a depth of 30 meters, totaling 14 piles. The abutment is designed with a height of 2.4 meters and a length of 10 meters, and is reinforced with D22-100 longitudinal reinforcement and D22-150 shear reinforcement. The soil bearing capacity for the foundation was obtained at Qu = 207.36 tons, which is greater than the maximum load Pmaks = 168.87 tons. The total settlement is 13.6 cm over 141 years, which is still within the allowable settlement limit of 14.8 cm.