PORE WATER PRESSURE RESPONSE OF BANDUNG CLAY UNDER TEST EMBANKMENT LOADING FOR PADALARANG - CILEUNYI TOLL HIGHWAY PROJECT

• Main Author: Setiawan, Agus
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/3107
• Institution: Institut Teknologi Bandung

PORE WATER PRESSURE RESPONSE OF BANDUNG CLAY UNDER TEST EMBANKMENT LOADING FOR PADALARANG-CILEUNYI TOLL HIGHWAY PROJECT, Riyanto, Joko, 1988, Program Sistem dan Teknik Jalan Raya, Fakultas Pasca Sarjana, Institut Teknologi Bandung. A 30 m deep deposit of volcanic clay and sediments of related origin is located on the southern boundary of Bandung, West Java, Indonesia. The soil deposit, which is referred to as Bandung clay, has tropical volcanic origins, a frequently-found situation in Indonesia. Such a soil deposit can be expected to have engineering properties considerably different from those of non-volcanic origins. Despite high natural water contents and plasticity, the sediments exhibited relatively high strength and stiffness and a relatively high permeability, on both the micro- and macro-scale. The geotechnics of tropical residual soils are receiving increasing attention and, particularly, it has been observed that conventional soil mechanics testing procedures may not accurately reproduce in-situ behaviour. Field behaviour can then be best predicted using full-scale trials. A computer program to predict the magnitude and time-rate of consolidation settlement of compressible soils under embankment loading for two-dimensional problems was developed in a previous study. As part of the present study, the computer program was reviewed and extended to include an analysis of secondary compression. The programming was also refined into a structured format to allow more convenient user-interaction. The research presented in this thesis was primarily concerned with the response of the Bandung clay deposit to embankment loadings. Application was made of the results obtained from full-scale instrumented trial embankment sections. Computer analysis was applied to a theoretical approach to the behaviour, taking account of proper interpretation of field observations and laboratory test results. Comparisons of the observed measurements of excess pore water pressure collected from the embankment test site with those predicted by the newly extended computer program are presented. Good agreement between the simulated and actual field conditions was achieved.