Abstract

Cable-stayed bridges are stunning structures, which thanks to their dimensionsand shapes fascinate not a single observer. Designing such an object is awesomechallenge for designers. These structures must transfer forces resulting from dead load,operational loads, temperature changes and coming from wind pressure. Nowadays, eachcable-stayed bridge and suspension bridge must be subjected to special analysis to guaranteesafe usage. Designers cannot allow the situation, which took place on November7th,1940 in north-western part of the United States of America near the town Tacoma,where the collapse of the suspension bridge occured. The structure was destroyed as theresult of coincidence of natural vibrations and the dynamic wind action. Authors of thepaper undertake the task to provide dynamic analysis of Solidarity Bridge in Płock exposedto the wind action. The mentioned structure is the longest cable-stayed bridge in Poland andat the same time, the longest in the world with the arch suspended at one axis to the columnarpylon fixed to a platform. Additionally static analysis is made in order to verify horizontaland vertical displacements as the result of combined variable loads.

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