Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 12 of 12 for “"surface settlement"”.
-
Three-dimensional analysis of surface settlement in soft ground tunneling
… effects of different construction variables on surface settlements above tunnels in soft ground. The finite element program "PLAXIS 3D Tunnel" was used to carry out the numerical analysis for the earth pressure balance (EPB) shield tunneling method in a saturated, normally consolidated clay. The …
-
Behaviour of buried pipes adjacent to ground voids under dynamic loading
… led to a considerable increase in the soil surface settlement, pressure recorded at the pipe crown, spring-line and invert, pipe deformation and strain recorded in the pipe wall. Increasing the pipe burial depth contributed to significant reductions in the soil surface settlement, pressure …
-
Development of a volumetric strain influence ground improvement prediction model with special reference to impact compaction
… the profile of improvement in the ground, using surface settlement as the main input parameter. The model is based on the information reviewed, observation of field data and a static numerical analysis. For simplicity sake, no attempt is made to predict the energy requirement to achieve the input …
-
Ground movements associated with twin-tunnel construction in clay
… increased public transport. Due to the level of surface congestion an often utilised solution is to construct rapid transit systems within tunnels. Any sub-surface construction will generate ground movements which have the potential to cause damage to existing surface and sub-surface structures. …
-
MPM Modeling of Internal Collapse Under Levees Caused by Underground Openings
… benchmarks are performed to explore ground surface settlement and failure mechanisms. The findings show that the MPM effectively captures the collapse process, aligning with experimental data, empirical relations, and previous literature. The research highlights the importance of determining …
-
Analysis of NATM and shield tunneling in soft ground
… face stability, liner design, and ground surface settlement are analyzed for conditions that might be experienced on current projects. The study is intended to clarify some of the phenomena associated with the use of advanced tunneling techniques in soft grounds, and help improve the …
-
Tunnel Boring Machine (TBM) performance in Singapore's Mass Rapid Transit (MRT) system
… (TBM) construction in Singapore's MRT network. Surface settlement induced by the tunneling process can cause damage to underground utilities and foundations and buildings and/or disrupt daily life by damaging roads and pavements, and is used in this thesis as a measure of performance. The …
-
Centrifuge modelling of the behaviour of geosynthetic-reinforced soils above voids
… of a vertical prism and funnel to the surface, with the surface settlement profile better described by a Gaussian distribution rather than the parabolic profile used previously. An adaptation to the design methods for use with compacted clay liners was proposed by considering the clay …
-
Response of piled buildings to the construction of deep excavations
… studied, the largest impact on the ground surface and buildings is attributed to preliminary activities instead of the commonly expected excavation stage. The in situ preliminary activities caused 55-75% of the surface settlement and 55-65% of the building settlements. Surface settlements …
-
Simple Techniques for the Implementation of the Mechanics of Unsaturated Soils into Engineering Practice
… to simulate the vertically applied stress versus surface settlement behavior of shallow foundations in unsaturated coarse-grained soils assuming elastic-perfectly plastic behavior. These methodologies are extended to simulate the stress versus settlement behavior of both model footings and in-situ …
-
Critical height and surface deformation of column-supported embankments
… can be used in soft ground conditions to reduce settlement by transferring the embankment load to the columns through stress redistribution above and below the foundation subgrade level. Column-supported embankments are typically used to accelerate construction and/or protect adjacent facilities …
-
Foundation response to ground movements induced by tunnel excavation
… empirical method for the prediction of near-surface tunnelling-induced horizontal displacements in fine-grained soils was developed from the back analysis of field and experimental measurements. The focus of vectors of tunnelling-induced displacements was found to be a function of depth and …