### STRUCTURAL ANALYSIS PROGRAM USING DIRECT STIFFNESS METHOD FOR THE DESIGN OF REINFORCED CONCRETE COLUMN

#### Sari

*Most of the analyzes and calculations in civil engineering have been using computer. But many commercial structural*

*analysis programs are relatively expensive. Hence one of the alternative way is using a self developed structural*

*analysis program. The computer program is constructed using Visual Basic 6 programming language. Using direct*

*stiffness method and theory of ACI 318-02, a numerical procedure along with a computer program was developed for*

*the structural analysis and design of reinforced concrete member. From the direct stiffness method,in terms of*

*structural analysis, the output that obtained from the program are internal element forces and support reactions node*

*displacements. From ACI 318-02 codes, in terms of reinforced concrete member analysis, the program generate the*

*amount of longitudinal and lateral reinforcement of concrete member based on the output in the previous structure*

*analysis program. The program also reveals the biaxial bending-axial interaction diagrams in each direction of*

*rectangular and circular column. The interaction diagram of the columns is a visual representation to determine the*

*maximum axial load and moment exceeded the capacity of the column*.

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PDF#### Referensi

ACI, (2011). Building Code Requirements for Structural Concrete and Commentary, ACI 318-11, ACI Committee 318, American Concrete Institute, Farmington Hills, Michigan.

Cook, R.D.; Malkus, D.S.; Plesha, M.E.; and Witt, R.J., (2001). Concepts and Applications of Finite Element Analysis. 4th edition, John Wiley & Sons, Inc ., New York.

Gere, J.M., and Weaver, W. (1966). Matrix Algebra for Engineers, Van Nostrand, Princeton, NJ

Gavin, H., (2011). Matrix Structural Analysis, Department of Civil and Environmental Engineering, Duke University, Durham.

Logan, D., (2007). A First Course in the Finite Element Method, 4th edition, Thomson, USA.

Nawy, E. G., (2003). Reinforced Concrete â€“ A Fundamental Approach, 5th edition, Prentice Hall, Upper Saddle River, NJ.

Park. R; Paulay. T., (1975). Reinforced Concrete Structures, John Wiley and Sons, New York, USA.

Reddy.J.N., (2005). Solutions Manual For An Introduction to the Finite Element Method, 3 rd edition. McGrawHill, New York.

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