Reference no: EM132604548
CIVL 0015 Structural Mechanics - Middle East College
Learning Outcome 1: Apply these principles to the solution of a range of structural engineering problems
Learning Outcome 2: Present relevant information and calculations in a clear and unambiguous way
Assignment Objective
Principles of structural analysis introduced in module Structural Mechanics 3 will be extended to cover more advanced theories of analysis and design. The module will provide you with an introduction to, and in-depth study of, a range of analytical techniques and will equip you with the knowledge to undertake structural problems of a non-routine nature. In doing so, students develop their skills in using mathematical concepts to develop engineering theory
Assignment Tasks
i) A bridge of L m span is supported by three prestressed girders which needs to be analyzed as it's a requirement for Ministry of defense. All the three girders have same dimensions which are as follows; top flange (Bftx Tft), overall depth of web ‘Dw' and Bottom flange (Bfbx Tfb), and the thickness of web (Tw) all dimensions are in ‘m'.The variable load on the bridge could be taken as QLkN/m2. A prestressing force of P kN is located at ‘e' m from the soffit of the beam. Determine the extreme stresses at the mid-section of the beam as well as at the supports for the following conditions. Take parapet wall density as 20 Kn/m3. Consider the dense asphalt concrete pavement surface.
a) (i)Tendons are straight for the prestressed girder 1; (ii) Tendons are bent with zero eccentricity at the ends for the prestressed girder 2; (iii) Tendons are parabolic with zero eccentricity at the ends for the prestressed girder 3; discuss which case would be appropriate in terms stress results.
b) Compare the results of the stress for same conditions mentioned for all the three case if each girder is replaced by a trapezoidal-shaped prestressed girder having the following dimensions.
ii) A beam ABCD carries an ultimate uniformly distributed load of M kN/m and a two-point load of 2W kN and W kN as shown in the figure 3. The beam is simply supported at A, B, C, and fixed at D. Determine the required plastic moment and select a suitable section by using steel table (Euro Code-4). Take yield stress =250N/mm2. Based on the selection of the steel beam section interpret the shape factor.
Attachment:- Structural Mechanics.rar
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