Settlement

Settlement enables you to calculate settlement caused by surcharge load or by a change of the ground water table. You can easily visualize components such as subsurface stratigraphy, resulting settlement, and vertical stress loading.

Key Features

• Perform settlement analyses using standard industry theories (Janbu, Buisman)
• Perform soft soil analyses utilizing indices or coefficients of compression
• Perform secondary settlement based on Lade's theory
• Predict settlements induced by earthworks such as embankments, levees, road, and railroad subgrade construction
• Analyze performance throughout staged construction
• Display final values of specific variables or their variation by construction stage
• Reduce properties of affected zones according to structural strength, by geostatic stress percentage, or by incompressible subsoil
• Perform settlement analyses based on laboratory data obtained from incremental load and/or constant rate of strain oedometer soil tests
• Analyze settlement and stresses automatically at all important points and by loading increment
• Visualize and display results using color gradients

Ground Loss

The Advanced GeoStructural Analysis Ground Loss module gives you a wide range of tools to evaluate and predict damage to buildings by determining the impact of excavation on the settlement of the affected region of soil. In particular, you can perform risk assessments of the potential for building damage due to tunneling as well as analyze the subsidence trough shape above an excavation.

These tools help you prepare contract documents by enabling you to estimate ground movements and thereby provide calculations for use in estimating financial compensation for damage induced by tunneling.

The Ground Loss module offers four methods for evaluating possible building damage:

• Tensile failure
• Failure due to settlement trough gradient (slope)
• Relative structure deflection, such as hogging and sagging
• Analysis of selected building sections

Key Features

• Determine settlement, subsidence trough shape, gradient, and horizontal strains
• Analyze the subsidence trough shape using Volume Loss, which utilizes experimentally determined parameters based on soil or rock type and excavation method
• Analyze the subsidence trough shape using classical theories (Peck, Limanov, Fazekas) with the ability to account for layered geological profiles
• Estimate the subsidence trough shape (Gauss or Aversin)
• Model multiple tunnel tubes and sequential excavation
• Assess potential for structure damage caused by tunneling
• Analyze the subsidence trough at ground surface or any given depth
• Determine tensile strains and strain gradients

Note: The Ground Loss module is available as part of the Advanced GeoStructural Analysis suite.