The Development Of "YuHeng" Geotechnical Software--Deep Foundation Pit Support Design, Slope Stability Analysis

YuHeng" geotechnical software includes three parts: deep foundation pit supporting function block(YHZJK), slope analysis function block (YHBP2) and wedge stability analysis function block (YHWED3) .Deep foundation pit supporting function block is the most important part of "YuHeng" geotechnical software. The theory of this block is based upon the following specifications or methods: <> (JGJ 120-99), equivalent beam method and the step excavations with fixed retaining force method. The YHZJK function block can deal with the deep foundation pit support design in case of different soils and support types. Besides, the YHZJK function block can take into account the uniformly distributed additional load, the strip additional load and water action. The specification method and the equivalent beam method are used to design the cantilever retaining structure and single support retaining structure. And the step excavations with fixed retaining force method is used for multi-support retaining structure. The functions of the YHZJK are as following: designing of the embeding depth of the retaining structure; calculating of the shearing force and moment of stake; querying of the shear force and moment of random depth. For section carrying capacity, it can design and check the round section equally or unequally reinforced. On the side of output, besides the data result file, it can also plot the soil pressure force drawing, the shear force drawing, the moment force drawing and reinforced steel drawing with the menu control of Autocad."YuHeng" slope stability analysis function block can get the safety factor of the soil slope with weak faces. The static and dynamic safety factor can be calculated. At the same time, the seepage effect can be considered."YuHeng" wedge stability analysis function block can analyze the static and dynamic wedge safety factor on the action of tension fissure and water. Simulate the earthquake action by input the earthquake force coefficient or the earthquake acceleration wave. At the same time, the horizontal and vertical load can be considered.The new ideas of this paper are as following: (1) using of AutoCAD ActiveX Automation Server Capabilities to realize the seamless joint of AutoCAD with Visual Basic. (2) Designing of the round section equally or unequally reinforced. (3) Studying of the wedge dynamic stability under earthquake acceleration waves from three directions, and giving out the results that earthquake coefficient varies with different part of wedge because of phase shift.