抄録
The experiment was carried out to obtain the load and stress spectra of an actual full luffing type crawler mounted tower crane of 90 tons maximum capacity, traveling with the suspended load. Strain gauges were glued to eighteen points of the main members of tower and jib, apart from the stress concentrated points. The tensile force of pendant rope, angle of the tower and jib were recorded simultaneously. Crane was traveled on the 19mm level gapped ground. It was observed that the stress while the load were suspended parallel to the travel direction was smaller than suspended to the perpendicular to the travel direction, for in the latter case tower and jib behaved as a cantilever condition.
