SHAPE DESIGN OF CONCRETE ARCH DAMS USING HERMIT SPLINES

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AKBARI JALAL; AHMADI M.T.; YAN PAL P.

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Journal: Year:2008 | Volume:42 | Issue:4 (114) Page(s): 407-417

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Information Journal Paper

Title

SHAPE DESIGN OF CONCRETE ARCH DAMS USING HERMIT SPLINES

Author(s)

AKBARI JALAL | AHMADI M.T. | YAN PAL P. | Issue Writer Certificate

Keywords

CONCRETE ARCH DAMSQ3

DAM SHAPEQ3

FINITE ELEMENT ANALYSISQ3

HERMIT SPLINEQ3

Abstract

In the previous research, shape of CONCRETE ARCH DAMS were modeled using quadratic and cubic polynomials along dams height, but in these formulations some details such as joints location, variable thickness starting points, abutments excavation, intersections of horizontal arches with sound rock and etc. were ignored because of the lack of parameters for dam geometry modeling. In the case of existence of inflection points in canyon shape, equations are inaccurate; consequently modeling the whole shape for more details is not possible. In this paper a new formulation using Hermite Spline equations for defining the geometry of double curvature CONCRETE ARCH DAMS with parabola horizontal arch has been presented. In this model the geometry of the arch dam is created using 37 design parameters or as design variables in optimization process for future developments. In geometry modeling the details such as site topography triangulation, crown cantilever shape, horizontal arches, intersection of horizontal arches with sound rock, constant and variable thickness zones formulation has been developed carefully. One of the advantages of this new formulation is creating smooth and flexible shapes in comparison with Bofang’s cubic polynomials method. For three dimensional finite element analyses, three dominant loading cases have been considered. In order to considering the real construction conditions, Multi-stage grouting for dead load has been intended. For stress analysis in dynamic case the response spectrum method is used. For this purpose, a package has been developed. In order to design professional software, the object- oriented capabilities of FORTRAN90, such as: Module, Inheritance, Type, Dynamic arrays and etc. have been applied frequently. This software has automatic mesh generation for any canyon shape. In addition, this software package provides some useful information for geometry, finite element model and information for future optimization process. The developed software has been applied successfully for Shahid Rajaee arch dam.

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APA: Copy

AKBARI, JALAL, AHMADI, M.T., & YAN PAL, P.. (2008). SHAPE DESIGN OF CONCRETE ARCH DAMS USING HERMIT SPLINES. JOURNAL OF FACULTY OF ENGINEERING (UNIVERSITY OF TEHRAN), 42(4 (114)), 407-417. SID. https://sid.ir/paper/14429/en

Vancouver: Copy

AKBARI JALAL, AHMADI M.T., YAN PAL P.. SHAPE DESIGN OF CONCRETE ARCH DAMS USING HERMIT SPLINES. JOURNAL OF FACULTY OF ENGINEERING (UNIVERSITY OF TEHRAN)[Internet]. 2008;42(4 (114)):407-417. Available from: https://sid.ir/paper/14429/en

IEEE: Copy

JALAL AKBARI, M.T. AHMADI, and P. YAN PAL, “SHAPE DESIGN OF CONCRETE ARCH DAMS USING HERMIT SPLINES,” JOURNAL OF FACULTY OF ENGINEERING (UNIVERSITY OF TEHRAN), vol. 42, no. 4 (114), pp. 407–417, 2008, [Online]. Available: https://sid.ir/paper/14429/en

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