CONVERSION METHOD OF STATIC DEFLECTION IN RAILROAD BRIDGE, AND CALCULATION METHOD OF IMPACT COEFFICIENT

摘要

PROBLEM TO BE SOLVED: To calculate an impact coefficient by calculating static deflection in a short time and at low cost and further to implement accurate evaluation without performing a test based on low-speed travel of a train. ! SOLUTION: A conversion method of static deflection in a railroad bridge and a calculation method of an impact coefficient are disclosed while include: a first step of detecting a passing position of a first wheel shaft 2a of a leading car in a train 2 that passes a railroad bridge 1; a second step of dynamically measuring deflection of girders of the railroad bridge 1 when the first wheel shaft 2a of the train 2 passes a span center O of the railroad bridge 1; a third step of converting the deflection of girders into static displacement in accordance with a monogram indicating a relation between a response displacement computed beforehand and the impact coefficient on the basis of measured dynamic waveforms; and a fourth step of calculating the impact coefficient from the stat