Question 11.15: Use the data from Prob. 11.13. The structural engineer has d...
Use the data from Prob. 11.13. The structural engineer has developed a preliminary bridge design consisting of a simply supported bridge deck. Because of high earthquake-induced lateral loads and the simply supported condition, the deflection of the piers must be minimized. Thus the structural engineer requires a point of fixity of the piers at an elevation of –8 m or higher. Is this possible?
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Since the upper two soil layers will liquefy during the earthquake, they will not be able to provide any lateral support. The liquefaction extends to a depth of -8 m and therefore the point of fixity of the piers will be much deeper.
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