Si Shen
Tips for complex analytical modelling in civil engineering
This blogpost shares a few tips about modelling from personal experience
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The Si-Eng
Si's civil engineering blog
All original by Si Shen.
All posts are personal opinions only.
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Si Shen
- Jun 29
- 2 min
Properties of slurry for TBM tunnelling
What is slurry used in TBM tunnelling? The slurry used in TBM tunnelling is basically a water-based suspension fluid with added solids...
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Si Shen
- May 25
- 2 min
How high density slurry help mitigate tunnelling risks
Why slurry can support tunnel face? The reason why slurry can be used as an effective medium of face support, is because of the ‘filter...
63 views0 comments
Si Shen
- Jan 24
- 2 min
Demystifying the observational method
Explaining the observational method in plain and understandable language
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Si Shen
- Mar 13, 2023
- 2 min
Creep, stress relaxation and shrinkage
Creep, stress relaxation and shrinkage are different concepts but easily confused
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Si Shen
- Feb 28, 2023
- 2 min
TBM face intervention
Once the TBM gets started, it usually stops from time to time for a procedure called ‘face intervention’
467 views0 comments
Si Shen
- Jan 6, 2023
- 4 min
TBM selection in rock conditions
For tunnelling operations in self-standing ground, three arch-types of TBMs can be used: open, single shield and double shield
391 views0 comments
Si Shen
- Aug 7, 2022
- 2 min
Annulus grouting behind tunnel segments
Annulus grouting (also called back grouting or tail-skin grouting) is the grouting around the tunnel annulus – the backfilling of the gap...
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Si Shen
- Jul 3, 2022
- 1 min
Engineering properties of Peat
Peat is generally considered as highly problematic and one of the least wanted soil types you want your foundation to be in. It is an...
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Si Shen
- May 15, 2022
- 2 min
Tunnel segment geometry (1)
main consideration factors around the segment thickness, radial length and longitudinal length
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Si Shen
- Apr 12, 2022
- 2 min
TBM selection under specific scenarios
pros and cons between EPB TBMs and slurry TBMs under specific scenarios of consideration
179 views0 comments
Si Shen
- Mar 18, 2022
- 1 min
The ‘reverse’, ‘sideways’ and ‘inclined’ bearing capacity problems
This blog post explains the ‘reverse’, ‘sideways’ and ‘inclined’ bearing capacity problems.
215 views0 comments
Si Shen
- Feb 17, 2022
- 3 min
Simulating ground water
Ground water is a matter unique to geotechnical engineers
140 views0 comments
Si Shen
- Jan 31, 2022
- 3 min
Convergence confinement method (3)
This blog will complete this series by discussing some practical uses of the Convergence-Confinement theory
200 views0 comments
Si Shen
- Jan 12, 2022
- 2 min
Convergence confinement method (2)
the in-situ stress of the ground will be shared between the ground itself and the supporting structure once the tunnel is done
217 views0 comments
Si Shen
- Jan 3, 2022
- 3 min
Convergence confinement method (1)
What convergence and what confinement? Convergence-Confinement is a well-known theory in tunnelling, and widely applicable regardless of...
570 views0 comments
Si Shen
- Nov 26, 2021
- 2 min
Consolidation settlement and heave of clay
soil acts as a sponge, in that it pushes out water when squeezed, and sucks in water when let go
395 views0 comments
Si Shen
- Nov 11, 2021
- 2 min
Plain concrete - how is it different
there is a different set of design rules for plain concrete
392 views2 comments
Si Shen
- Oct 25, 2021
- 4 min
TBM selection - EPB and Slurry
Selecting the ‘right’ TBM is all about maximising efficiency and minimising risk
3,327 views0 comments
Si Shen
- Oct 11, 2021
- 3 min
How does a foundation fail
the ultimate failure of foundations is a lot more complicated to understand
837 views0 comments
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