Effective Analysis of Diaphragm Walls

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ASCE Publications, Jan 1, 2000 - Technology & Engineering - 104 pages
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Prepared by the Technical Committee on Performance of Structures during Construction of the Structural Engineering Institute of ASCE.

This report presents the current design practiceĜfor diaphragm walls, with an emphasis on the most effective techniques. It provides an overview of various approaches to diaphragm wall design and presents several successful techniques used in Boston's Central Artery/Third Harbor Tunnel (CA/T) Project, a massive civil engineering effort thatĜemployed more than three million square feet of diaphragm walls. This report focuses attention on the importance of techniques that take soil-structure interactions into consideration.

 

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Contents

MODELING
1
12 Current Design Practice
3
13 Objective and Scope of Study
4
2 METHODOLOGY OF PROPOSED ANALYTICAL MODEL
5
3 COMPARISON WITH OTHER MODELING TECHNIQUES
10
32 SOILSTRUCT Finite Element Analysis
18
33 Generalized Effective Stress Modeling
22
34 Summary
33
434 Wall Displacements Bending Moments Ground Movement and Strut Loads
55
44 Effect of Soil Profile
60
45 Effect of Tunnel Depth
69
46 Effect of Tunnel Width
76
47 Effect of Wall Stiffness
83
48 Effect of Strut Vertical Spacing
90
5 SUMMARY AND CONCLUSION
97
6 REFERENCES
98

PARAMETRIC 5TUDIES
36
432 Stages of Excavation and Construction
40

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