01Retaining-system response
Shanghai Metro Deep Excavation
Measurements along the excavation boundary preserve how structural response changes with depth and construction sequence.
- Deep excavation
- Stage-by-stage response
Applications & case studies
Underground monitoring, shown through construction context.
These references show where sensing lines were placed in excavations, tunnel structures and pile foundations, and how depth-wise data supported engineering interpretation.
How to read the cases
Underground data becomes useful when depth and construction stage remain visible.
Retaining walls, tunnel linings and foundations respond differently as excavation or loading progresses. A useful case therefore records both sensor position and the stage at which the response occurred.
- Where
- Diaphragm wall, tunnel lining, pile shaft or bearing layer
- What
- Strain, displacement, temperature and load transfer
- Why
- Track staged response and verify underground structural behavior
Field references
Two underground structures, two depth-wise measurement questions.
01
02Foundation load transfer
Fujian Wanhua Pile Static Load Test
Distributed strain along the pile shaft reveals how axial load and bending are transferred into the surrounding layers.
- Pile shaft profile
- Vertical & lateral loading
Evidence example
A depth profile explains more than a single surface reading.
In deep excavations, the location of the response is as important as its magnitude. A distributed profile helps relate deformation to bracing levels, excavation stages and the geometry of the retaining system.
- Depth
- Spatial reference
- Stages
- Construction sequence
- Profile
- Distributed response
Related monitoring approach
Need the system logic behind underground monitoring?
The underground monitoring solution connects excavation geometry and construction sequence to sensor placement, coverage and interpretation.
Discuss a monitoring requirement
Bring the section drawing, construction stages and measurement objective.
These inputs establish the monitoring boundary before instruments are selected.