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최외호,민경주,이승우 한국전산구조공학회 1995 전산구조공학 Vol.8 No.1
선형 변단면 부재의 삼차원 공간에서의 해석을 위하여 강도행렬을 유도하였다. 변단면 부재의 구조물을 해석하기 위하여 본 연구에서 유도된 강도행렬을 사용하여 구한 결과와 분할부재를 균일단면 탑 형태로 표현하여 ANSYS에서 구한 결과를 비교하여 본 연구의 결과 효율성 및 정확성이 증진된 것을 확인하였다. 본 연구에서 유도된 강도행렬은 변단면 부재와 균일단면 부재의 해석에 사용할 수 있다. For the three dimensional analysis of linearly tapered members, the stiffness matrices are derived. Significant improvements of accuracy and efficiency of the analysis are achieved by using the stiffness matrices developed in this study. Results of these analysis are compared with those based upon stepped representation of beam elements in the ANSYS. The stiffness matrices presented in this study can be used for the analysis of tapered and prismatic members.
崔外鎬 단국대학교 1985 論文集 Vol.19 No.-
A simplified theory is developed for the analysis of straight box girder bridges by using of finite rectangular plate elements. The element stiffness matrix is formulated on the basis of the ordinary Ram theory under the assumption that the stresses in an element are distributed uniformly or varied linearly along sides of the elements, Without using the shape function and the numerical integration. An example is presented to verify the validity and accuracy of this theory.
최외호,민경주,이승우 한국전산구조공학회 1995 한국전산구조공학회논문집 Vol.8 No.1
선형 변단면 부재의 삼차원 공간에서의 해석을 위하여 강도행렬을 유도하였다. 변단면 부재의 구조물을 해석하기 위하여 본 연구에서 유도된 강도행렬을 사용하여 구한 결과와 분할부재를 균일단면 탑 형태로 표현하여 ANSYS에서 구한 결과를 비교하여 본 연구의 결과 효율성 및 정확성이 증진된 것을 확인하였다. 본 연구에서 유도된 강도행렬은 변단면 부재와 균일단면 부재의 해석에 사용할 수 있다. For the three dimensional analysis of linearly tapered members, the stiffness matrices are derived. Significant improvements of accuracy and efficiency of the analysis are achieved by using the stiffness matrices developed in this study. Results of these analysis are compared with those based upon stepped representation of beam elements in the ANSYS. The stiffness matrices presented in this study can be used for the analysis of tapered and prismatic members.
崔外鎬 全北大學校 1970 論文集 Vol.12 No.-
In classical method, analysis of contintinuous structures was usually performed by the slope-deflection or the three-moment theorems. Both methods were used conveniently for solving structure problems with constant prismatic members, but the moment distribution method was prefered when solving structure problems of members with variable sections. With the use of electronic computers, the classical methods are more favorably used The programming of the analysis of continuous structurs in the form of simultaneous equations can be easily established in a form of matrix and solved systematically. The following method is developed to analyze continuous structural members of variable section with the aid of coefficients currently published. But existing tables for frame constants are limited to certain types of members. A general method for computing the constants for any member is needed for efficient and economical design. The matrix formulation for computing them provides a direct, compact, and systematic solution. Therefore the frame constant matrices are easily programmed, and can be incorporated as a sub-routine in computer programs for analysis and design.
折板法에 의한 內部 DIAPHRAGM이 없는 BOX거더의 彈性 解析
崔外鎬 단국대학교 1982 論文集 Vol.16 No.-
An analytical solution of the true response of a box girder bridge under load is complicated by the usual factors common to other reinforced concrete structural systems. It is a highly indeterminate structure; it is made of two materials, concrete and steel; under increasing load it experiences cracking and thus a redistribution of internal forces; and the internal forces are time dependent because of creep and shrinkage in the concrete. Notwithstanding these complexities, as an initial step the development of a general solution for box girders based on an elastic analysis of an uncracked homogeneous system should prove of considerable value in studing these structures with a wide range of variables. Using this basis, a box girder bridge may be taken as an assemblage of individual rectangular plate elements interconnected at the longitudinal joints and simply supported at its two ends by transverse end diaphragms. The object of this study to is analyze the concrete box girder by the Folded Plate Method.
崔外鎬 단국대학교 1989 論文集 Vol.23 No.-
The finite element method utilizing isopararametric plate element is applied for the elastic analysis of straight box girder bridges. A continuous box girder is analyzed as an example to verify the validity and accuracy of this method. It is indicated that the deflections and longitudinal stresses obtained by this method agree well with those from the other methods.