STUDI PERENCANAAN ABUTMENT DAN PONDASI PADA JEMBATAN SEI ALALAK BANJARMASIN

The Sei Alalak Bridge, which was built since 2019, is recorded as the first bridge in Indonesia using a cable-stayed design and an arch bridge structure. The main span of the bridge is 130 meters long, the approach bridge is 125 meters, and the bridge abutment is 425 meters long. The purpose and objective of the structural planning of the Sei Alalak Banjarmasin Bridge is to find out how much load the upper structure is received by the bridge foundation and also to plan the dimensions of the foundation that can withstand the weight of the upper structure of the Sei Alalak Banjarmasin Bridge. When using a combination of strength 1, the largest vertical load is 19476.891 kN. In the abutment design, a reinforced concrete T-type abutment is used with the initial dimensions of the abutment planned with a height of 10.3 m with a Pile cap measuring 7 x 20 m. And the calculation results obtained a result of 4394.25 kN. And the large subsidence caused by the structure at the top is 8.3 cm over a period of 240.5 years.