ANALISIS DAN EVALUASI KONSOLIDASI PRIMER DB-001-DB010 PADA TOL SEMARANG-DEMAK DI PROVINSI JAWA TENGAH

• Main Author: Kahfi Aminuddin, Achmad
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/84779
• Institution: Institut Teknologi Bandung

Land subsidence is a serious problem in many major cities, including Semarang, which has experienced significant impacts in recent decades. This phenomenon can cause infrastructure damage and environmental changes, with subsidence rates reaching 1 to 10 cm per year since the 1980s. Land subsidence can be categorised into two types: endogenic and exogenic. This study analyses the natural and load-induced consolidation using Terzaghi's consolidation theory and refers to the Addition of load referring to SNI 03-6861. 1-2002 Drainage Layer, SNI 2847:2013 Lean Concrete Layer, SNI 2847:2013 Rigid Pavement, SNI 03-1737-1989 - Test Method for Specific Weight of Hot Mix Asphalt and SNI 8394:2017 - Procedure for planning hot mix asphalt pavement. Soil physical and mechanical data and drill logs were used to support the analysis. Load-induced consolidation is assessed through geotechnical parameters that consider factors such as soil compressibility, coefficient of consolidation (cv), and pore water pressure. This consolidation process is the response of soil to external loads, which causes pore water displacement and compaction of soil particles. The results showed that the natural settlement factor of the soil at points DB001-DB010 ranged from 1.17 - 1.728 metres with T90 time reached in the range of 93 - 1114 years. The influence of the load factor in the form of toll road construction load on the ground surface of 36.576 kN/m2 increased by 20 - 40.17% so that it increased to 70 - 836 years. The load also affects the acceleration of the natural consolidation rate with a range of 0.127 - 1.336 cm/year. It increased to 0.169 - 2.214 cm/year. The research revealed that although subsidence occurs slowly, its impacts can hinder sustainable development and require effective mitigation approaches. Efforts to understand and manage soil consolidation are essential to reduce risk and protect infrastructure in affected areas.