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UC-1 Series Geotechnical Analysis
UC-1 3D slope stability analysis - 3DCAD(LEM)
Software price US$ 3,360
Academic price US$ 1,120
Three-dimensional analysis of slope stability /program for planning countermeasure work

Geotechnical analysis support service

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Applicable to Windows Vista/7/8
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Currently it is common to analyze slope stability with two-dimensional plain surface in mind, but this program will enable you to make stability analysis reproducing real land shapes and sliding surface in three dimensions. Three-dimensional land shapes are designed to be displayed relatively with ease by entering plenty of cross-sectional drawings in a two-dimensional method. In the process of countermeasure work it is possible to draw up a plan of piling using three-dimensional deterrent force, with consideration that putting in piles can be easily put into image in a two-dimensional way. Moreover, considering that current standards about a piling plan are intended for two-dimensional deterrent force, this program is designed so that you can make a plan of piling by means of two-dimensional deterrent force as well.
The analytic core of this program makes use of the land analysis program by Prof. Ukai and his research laboratory at Gunma University who has reputation for advanced analytic theory and brilliant achievements. It is jointly developed by our company which is engaged in the development of the prepost part and the university.


- ICCI2004 The First International Conference on Construction IT (15-17 August 2004)

- The First FORUM8 Design Conference Report on the special lecturesNew!

Function and features of the program
Analysis methods
(1)Analysis methods: Following 3 methods are available, 2-dimensional limit equilibrium method expanded to 3-dimensional.
・ Hovland (Hovland) method
・ Hovland (Hovland( water weight)) method
・ Simple Janbu (The Janbu method)

(2)Calculation types: Following is available at both all time and earthquake.
・ Stability factor calculation
・ Back calculation method (c is fixed)
・ Back calculation method (φ is fixed)
・ c-tanφ-related figure

(3)Additional capabilities
1. Arbitrary water pressure can be considered to the landslide side (not the hydrostatic pressure from ground water, but hydraulic pressure examined separately).

2. It supports the up and down collective movement of groundwater. (examination of increase in pore water pressure by rainfall and the effect of drainage measure).
3. The deterrent of the countermeasure construction is calculated to satisfy the designed safety factor.The safety factor is not particularly described for the 3-dimensional limit equilibrium method, but the 2 dimensions limit equilibrium method in most design manuals.Usually when the 3-dimensional designed safety factor (Fsp(3D)) equivalent to the 2-dimensional designed safety factor (Fsp(2D)) is used, it is necessary to estimate the designed safety factor to be slightly bigger. Therefore, it is suggested that the 3-dimensional designed safety factor should be calculated from 2-dimensional designed safety factor, so the additional function to set the 3-dimensional designed safety factor is equipped with this product.

Main analysis, a list of calculation functions
Article Detail
Analytical methods simple Janbu method
Hovland method
Hovland (Water weight method)
The safety factor calculation The c φ is input to calculated the safety factor → requirement deterrent is calculated
Terrain The number of layers (10 layers)
The Back calculation method The c value is fixed to calculate φ.
The φ value is fixed to calculate the Co.
The φ value is fixed to calculate Ck experience value (augmentation factor).
Making of the c -tanφ-related figure
Design of the countermeasure construction The 3-dimensional designed safety factor is calculated from the 2-dimensional designed safety factor
The 3-dimensional designed safety factor is calculated from the 2-dimensional designed safety factor
Additional capabilities The 3-dimensional designed safety factor is calculated from the 2-dimensional designed safety factor
Examination at earthquake
The up and down collective movement of groundwater
The consideration of the arbitrary hydraulic pressure on the landslide side
Direct input and edit of DEM data
Tools SXF data import tool
Seepage analysis result cooperation tool (SATL3D)
Terrain model conversion tool (GMTL3D)

Top items Middle items Sub items Limit
land features number of landslide layers Multilayered ground correspondence 10
number of cross sections (lateral lines) 99
SXF data read in : I cope with read in of the CAD data
Components Grade / Ground water table / A landslide side / A bed boundary-surface 199
Submergence terrain Analysis is carried out to lower the groundwater level forcibly. -
analysis Column partition numbers Partition numbers to x and y direction 200

About the countermeasure construction design
1. The design calculation of the pile work by the 3-dimensional analysis (the 3-dimensional deterrent) is available.
2. The design calculation of the pile work by the 2-dimensional analysis (the 2-dimensional deterrent) is available at the same time.
3. 3 types of piles, "a wedge pile", "a shear pile" and "a prevention pile" are available in the pile work design calculation.
4. Examination of the most suitable pile location by the Ru-Ly curve is available.
5. As pile arrangement, examination of a single row and a staggered arrangement is available.

Tools (support)
1. [SXF data import] Reading of SXF file, which CAD data support as 2-dimensional sectional input tool.
2. [Terrain model conversion tool] the 2-dimensional cross section data or the DEM data that terrain data of BoringCD/3D-Pro (GeoMap3D) was converted into can be imported to this product.
3. [Seepage analysis result combination tool] Slope stability analysis can be carried out, generating groundwater necessary to analyze landslide with our product "3-dimensional Seepage FEM analysis (VG Flow)" or by using of result analysis as regular text format even if it is another companys product.

Drawing, output capabilities
1. both "course of traverse type" (Tin type) 3D" and "DEM type 3D" can be displayed by 3D drawing function.It allows 3D models to be exported in 3DS format and imported in UC-win/Road.
2. "Thrust vector diagram" and "Maximum shear resistance force figure" are available to be output as the 3-dimensional slope stability analysis result.
3. "Ru-Ly curve" and "c-tanφ related figure" can be also output for report.
4. Selection of the output from a tree view and an output preview are supported. Printer and HTML output is available with figures in design cases, calculated results. It is convenient for data reuse and computerizing of reports, supporting HTML output and output as text format.

Roadwork "Guideline for safety work on a slope" published March, 1999 by Corp. Japan Road Association
"Guideline for planning steel pipe pile against landslide" published June, 2003 by Corp. Japan Landslide Society
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