Selection Of Structural System Research Articles

Study on Seismic Behavior of Steel Frame with Different Brace Patterns

In order to analyze dynamic characteristics of steel frame with different pattern braces, three structures with brace of X, V and Λ patterns were designed utilizing STS of PKPM software respectively. Sizes of main members were provided through designed. Based on structural design, time history analysis under different earth waves were made by using ANSYS to investigate the effects exerted from different pattern braces on structural stiffness. Results showed that three different braces played an important role in strengthening structural stiffness. Braces with V and Λ patterns had approximate properties. The story drift ratio and the overall torsion of three different braces met the requirements regulated by Chinese design codes. Conclusions might be useful in practical engineering design during structural system selection.

Design of the nations bank corporate center

AbstractThe paper describes the structural design of Nations Bank Corporate Center. The topics addressed include the structural system selection process used during preliminary design. A complete description of the reinforced concrete frame is presented with emphasis placed on wind engineering, seismic design and the exterior frame gravity analysis. Differential shortening of core and exterior columns and compensation methods used during construction are presented. Temperature effects are also discussed. Finally, the tower foundation and value engineering changes which resulted in structural savings of over 1.6 million dollars are described. The paper is written for engineers not familiar with the design of Tall Buildings and aims to present in some detail the problems and solutions encountered in the structural design of Nations Bank Corporate Center.

A Simplified Racking Analysis of a Car Carrier by Using Symbolic Calculations

In this paper a simplified analysis is proposed for the selection of structural systems of a car carrier, whose transverse structural system has wise variations such as a partial bulkhead system and a strong web frame system depending on the relevant design philosophies. Introducing a simple beam model, which can be solved by a symbolic manipulation procedure, one can observe that the racking deformation of the transverse section is mainly influenced by the non-dimensional shearing rigidity defined in the present analysis. Comparing the partial bulkhead and strong web frame systems, the shearing rigidities at the bulkhead sections having the latter system is considerably small, and correspondingly is racking deformation obtained by the simplified analysis is several times larger than that of the former system. In order to predict the racking deformation of actual ships having various transverse rigidities, an effective method is proposed, where the simple beam analysis using symbolic calculations is combined with the numerical data obtained by precise three-dimensional structural analyses of ships having similar principal dimensions. The validity of the proposed method is confirmed by comparing the predicted values with the precise numerical results.