Course Code: ENGIN2203 Course Title: Structural Analysis University: Federation University Country: Australia
Introduction
This exercise involves the use of Space Gass to investigate several issues of a structural nature. The objective of this exercise is to enhance your understanding of structural behaviour, as well as develop a basic competency in the use of an industry-standard structural analysis computer program. This assignment consists of two parts.
Please note that you need to upload 2 files in the Moodle submission link by the due date:
1) Complete report file for parts A and B (in Pdf format);
2) The SPACE GASS file for Part B (in .SG format).
Part A: 2-Span Continuous Beam
A 2-span continuous beam has the support arrangement, member sizes and loading shown below:
Each group will use an exclusive set of parameters for the input parameters. The method to generate input parameters is as follows: Count the number of letters of the first name of each group member and use the average of the two numbers as the value of X, then generate the parameters according to the table below (e.g. for Jack and Claire, X=5). Round up the obtained values to 1 decimal places.
a.The full B.M.D. and compare the bending moments MA, MB and MC, and the maximum sagging B.M.’s with those determined in a) and b).
Part b: Portal Frame Model
Introduction
This exercise continues on the second part of Assignment 1 to apply the wind loading on a typical steel portal frame building, using the SPACE GASS program. You need to use the group inputs and results of your calculations from Assignment 1. Please make sure you correct any mistakes undertaken in the previous assignment in order to get full marks for this part and mention a small summary of changes.
The diagram of the portal frame is attached. The portal frames are pinned-base, with the usual rigid connections at the eaves and the ridge. There is no haunch in the structure.
In a normal portal frame building design, a substantial number of wind loading scenarios would be considered. For this exercise, however, a very small subset of load cases, considering only the case of maximum uplift, will be investigated.
Requirements
For the portal framed structure described above and in the attached diagrams, and based on the dead load + wind load cases described below, the following is required:
ii Maximum hogging moment at the ridge (kNm);
iii Maximum sagging moment at the rafter-column connection (kNm).
In addition to these answers, the following is to be included in the submission
iiA fully dimensioned diagram of the model, showing member and node numbering and section sizes;
iii Fully detailed diagrams showing the loadings used for the three load cases LC1, LC2 and LC3; iv
The bending moment diagrams determined for the two load cases LC4 and LC5. Note that the various diagrams should be produced by SPACE GASS
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