j*w
发帖数: 60 | 1 I need to do stability analysis for an earthen berm. The berm is has top
with of 20 feet, sideslope of 2:1 (H:V), Height of 15 feet. The soil is
compacted clay. 5-foot water is ponding again on one side of the berm. I
computed the hydrostatic forces against the berm. What kind of analyses
should I do for the berm (like friction, bearing, ...) to determine that the
berm can withstand the hydrostatic forces? I don't know much about soils
and structural analyses. Any input from you guys will define |
y******r
发帖数: 2986 | 2 Do you have soil parameters, like c',phi' or c and phi?
Do you consider seepage effect? (water table)
For slope part, at least soil parameter should be known?
the
【在 j*w 的大作中提到】
: I need to do stability analysis for an earthen berm. The berm is has top
: with of 20 feet, sideslope of 2:1 (H:V), Height of 15 feet. The soil is
: compacted clay. 5-foot water is ponding again on one side of the berm. I
: computed the hydrostatic forces against the berm. What kind of analyses
: should I do for the berm (like friction, bearing, ...) to determine that the
: berm can withstand the hydrostatic forces? I don't know much about soils
: and structural analyses. Any input from you guys will define
|
s*****h
发帖数: 460 | 3 you need slope analysis program(PCSTABL code based), for instance, STABL for
Windows. both deep seated failure(bearing capacity), global failure(
slippage along weak layer) |
y******r
发帖数: 2986 | 4 It seems SLOPE/W does not use a lot in practice.
for
【在 s*****h 的大作中提到】
: you need slope analysis program(PCSTABL code based), for instance, STABL for
: Windows. both deep seated failure(bearing capacity), global failure(
: slippage along weak layer)
|
j*w
发帖数: 60 | 5 Thank all of you for the inputs. I am working in flood control area and do
not know much about the Soil/Structural analyses. I had Seepage analysis
already based on some rough estimations. No actual geotechnical testings
were done. This berm has been in place for at least 20 years and no damages
were observed in any of previous year due to flooding (water ponding against
one side of the berm due to flood). I just want a quick and dirty stability
analyses to show the berm will not be failed. In o |
t***u
发帖数: 35 | 6 quick and dirty check without using many soil properties: treat
the berm as rigid body, i.e., gravity retaining wall and check
against sliding and overturning.
But I strongly recommend doing a slope stability analysis considering
the soil properties below the berm.
damages
against
stability
need
a
【在 j*w 的大作中提到】
: Thank all of you for the inputs. I am working in flood control area and do
: not know much about the Soil/Structural analyses. I had Seepage analysis
: already based on some rough estimations. No actual geotechnical testings
: were done. This berm has been in place for at least 20 years and no damages
: were observed in any of previous year due to flooding (water ponding against
: one side of the berm due to flood). I just want a quick and dirty stability
: analyses to show the berm will not be failed. In o
|
y******r
发帖数: 2986 | 7 good idea
I did not think it that way before
【在 t***u 的大作中提到】
: quick and dirty check without using many soil properties: treat
: the berm as rigid body, i.e., gravity retaining wall and check
: against sliding and overturning.
: But I strongly recommend doing a slope stability analysis considering
: the soil properties below the berm.
:
: damages
: against
: stability
: need
|
j*w
发帖数: 60 | 8 Thank you all for the help. I will try to work on it based on your opinions. |
j*w
发帖数: 60 | 9 I will try to use Bishop's simplified method of slices to test the stability
of the berm. Is this enough? Thanks. |
v*****y
发帖数: 323 | 10 Before you do any analysis:
1. Do you have soil boring data below the berm?
2. Do you have any lab testing data for the foundation soils and the
embankment fill?
The typical stability analysis in your case includes:
1. sliding
2. global stability analysis
3. seepage analysis
When you run global stability analysis:
1. What stress condition to use? Steady state or rapid drawdown?
2. What soil parameters to use? Effective stress soil parameters for steady
state, and total stress soil parameters for
【在 j*w 的大作中提到】
: I need to do stability analysis for an earthen berm. The berm is has top
: with of 20 feet, sideslope of 2:1 (H:V), Height of 15 feet. The soil is
: compacted clay. 5-foot water is ponding again on one side of the berm. I
: computed the hydrostatic forces against the berm. What kind of analyses
: should I do for the berm (like friction, bearing, ...) to determine that the
: berm can withstand the hydrostatic forces? I don't know much about soils
: and structural analyses. Any input from you guys will define
|
v*****y
发帖数: 323 | 11 To say an embankment is stable or not is a lot of liability.
damages
against
stability
need
a
【在 j*w 的大作中提到】
: Thank all of you for the inputs. I am working in flood control area and do
: not know much about the Soil/Structural analyses. I had Seepage analysis
: already based on some rough estimations. No actual geotechnical testings
: were done. This berm has been in place for at least 20 years and no damages
: were observed in any of previous year due to flooding (water ponding against
: one side of the berm due to flood). I just want a quick and dirty stability
: analyses to show the berm will not be failed. In o
|
