Table 2: Initial stiffness according to different pitches of bolts on the flange of the T-steel.

Pitches of bolts on the flange of the T-steel (mm)Net length of bolts (mm) Initial stiffness (kN/mm)Error rate (%)
CalculatedExperiment

9060210.6211.920.6
150120162.1161.890.1
200170109.1110.080.9