PENGARUH DILATASI TIPE ISOLATION JOINT DAN CONSTRUCTION JOINT TERHADAP DEFLEKSI LATERAL TIANG PANCANG DERMAGA

Abstract

Wharf is one of the buildings in the port that is used as a place to dock ships and carry out port activities. The wharf structure is divided into several systems that require Dilatation (Joint) to control the fracture of the structure and separate the two different structures. Wharf structure generally uses the Isolation Joint (IJ) type dilatation, while the Construction Joint (CJ) type is commonly used in structures on the ground. The type of restraints of the dilatation structure in the IJ type is modeled as free, while the CJ type is modeled as roll. This study studied the effect of the use of IJ and CJ type dilatation on the wharf structure on the top of plie deflection. Soil data in Mempawah Regency, West Kalimantan was used as a case example and the analysis process using the Finite Element Method software. The results showed that the greatest effect of combined loading on the top of pile deflection in the longitudinal direction in the IJ and CJ types was 6.3 cm (IJ) and 3.8 cm (CJ), occurred in extreme conditions, , while the transverse direction was 7.5 cm (IJ) and 6.8 cm (CJ) occurred when the dock received the ship's berthing load. Type CJ dilatation has an effect in reducing the longitudinal deflection of the top of pile by 38.93% and the transverse direction by 4.51%