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Offline ndtma  
#1 Posted : 16 September 2023 11:01:44(UTC)
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Ref: Example 12.2 (Page 296) - Soil Mechanics : Principles and Practice by G.E. Barnes.

The attached SM file demonstrates how to find cutting points of strips with the slope profile and slip circle.
(for an assumed strip width of 1m. which can be changed if necessary).

Slip_Circle_Barnes-Ex 12.2-TO FORUM.pdf (239kb) downloaded 51 time(s).
Slip_Circle_Barnes-Ex 12.2-TO FORUM.sm (321kb) downloaded 42 time(s).

Edited by user 16 September 2023 11:04:08(UTC)  | Reason: Not specified

Look within!... The secret is inside you.
Best Regards
Eng. NDTM Amarasekera - Sri Lanka
thanks 2 users thanked ndtma for this useful post.
on 16/09/2023(UTC),  on 31/10/2023(UTC)

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Offline ndtma  
#2 Posted : 16 September 2023 13:51:13(UTC)
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A small text correction to my post #1.
Sorry for inconvenience please.

Point A and Toe are also same.

Slip_Circle_Barnes-Ex 12.2-Text Correction.png

Edited by user 16 September 2023 13:54:36(UTC)  | Reason: Not specified

Look within!... The secret is inside you.
Best Regards
Eng. NDTM Amarasekera - Sri Lanka
thanks 2 users thanked ndtma for this useful post.
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Offline ndtma  
#3 Posted : 16 September 2023 19:06:16(UTC)
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Hi,
Second correction, as the variable Hvc is no longer used in the entire program. Please delete the entire line as indicated.
Extremely sorry.

Slip_Circle_Barnes-Ex 12.2-Correction2.png
Look within!... The secret is inside you.
Best Regards
Eng. NDTM Amarasekera - Sri Lanka
Offline ndtma  
#4 Posted : 20 September 2023 07:55:02(UTC)
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Hi,

The complete solution to Slope Stability Analysis of above example.
Analysis is carried out in 2 parts.

1. With one assumed Center of a slip circle to explain steps involved and resulting cordinates of strips etc., and checked with ACAD drawing.

2. Program to find the minimum factor of safety using multiple arrays of centers.

Slip_Circle_Barnes-Ex 12.2-Min FS-R8-CORRECT-FINAL-R4.pdf (335kb) downloaded 38 time(s).

Slip_Circle_Barnes-Ex 12.2-Min FS-R8-CORRECT-FINAL-R4.sm (523kb) downloaded 22 time(s).
Look within!... The secret is inside you.
Best Regards
Eng. NDTM Amarasekera - Sri Lanka
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Offline ndtma  
#5 Posted : 21 September 2023 13:45:50(UTC)
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Hi,

Please make the correction as shown ( replace A with -A in page 3).
Even without this correction, the program will run in most cases, but will give
wrong values for AA for some center cordinates.

This correction is an improvement.
Sorry for the inconvenience.

Correction.png

Edited by user 21 September 2023 13:48:20(UTC)  | Reason: Not specified

Look within!... The secret is inside you.
Best Regards
Eng. NDTM Amarasekera - Sri Lanka
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on 21/09/2023(UTC)
Offline ndtma  
#6 Posted : 29 October 2023 03:32:18(UTC)
ndtma


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An improved method to my post #5.
I get Wrong Values OR Errors when using the "Findroot()" function for some center cordinates.

This new method mainly uses "root()" function, with few supporting programs.

Slip Circle Intersection Points - TO FORUM.pdf (393kb) downloaded 35 time(s).
Slip Circle Intersection Points - TO FORUM.sm (248kb) downloaded 27 time(s).

Edited by user 29 October 2023 03:35:30(UTC)  | Reason: Not specified

Look within!... The secret is inside you.
Best Regards
Eng. NDTM Amarasekera - Sri Lanka
thanks 3 users thanked ndtma for this useful post.
on 29/10/2023(UTC),  on 29/10/2023(UTC),  on 30/10/2023(UTC)
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