EVALUATION OF SOIL CONSTITUTIVE MODELS FOR CASE DEEP EXCAVATION IN JAKARTA
The development of constitutive soil models and their application in computer programs have enabled the widespread implementation of numerical analysis based on the finite element method in solving geotechnical problems. However, there is still significant confusion among practitioners when selec...
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| Format: | Theses |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/76419 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | The development of constitutive soil models and their application in computer
programs have enabled the widespread implementation of numerical analysis
based on the finite element method in solving geotechnical problems. However,
there is still significant confusion among practitioners when selecting the
constitutive model that closely resembles the actual conditions in specific
geotechnical cases. This confusion often leads to uncertain modeling outcomes.
Furthermore, there is a limited number of comprehensive research studies
explaining the performance of existing constitutive models when used in
geotechnical projects, particularly considering the soft soil conditions prevalent in
Jakarta, Indonesia.
This study aims to conduct a numerical investigation by evaluating three
constitutive soil models: the hardening soil model, the hardening soil model with
small strain, and the soft soil model for deep excavation cases in Jakarta. The
evaluation will involve verifying the lateral wall deformation using field
instrumentation readings, specifically inclinometers. Once the evaluation of the
constitutive models is obtained, an iteration of input parameters will be performed
for the shear strength and stiffness parameters to identify correlated input
parameters that can effectively represent the field readings.
The evaluation results indicate that changing the constitutive model in the analysis
of deep excavation cases in Jakarta does not have a significant impact. Therefore,
the hardening soil model is selected as it is commonly used in practical
applications. By correlating the input parameters of the hardening soil model
commonly used by practitioners, conservative values are obtained. An iteration of
input parameters is then conducted to acquire values that are consistent with the
field instrumentation readings, resulting in the parameters |
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