Penilaian Kelaikan Jembatan Berdasarkan Parameter Dinamis Experimental pada Jembatan PC-I Girder 40 m

Abstract

Diajukan Bridge and tunnel roads are essential transportation infrastructure that concerns the livelihoods of many people and has a very important social function, therefore safety measures must be implemented for road users. Before a bridge is put into operation, testing must be carried out to ensure the safety of the bridge. Dynamic loading tests (vibration tests) aim to obtain dynamic parameters such as natural frequency, damping ratio, stiffness, and mode shapes, as one of the indicators to assess the fitness for function of the bridge. The results of vibration tests, both on the west side (JSB) and the east side (JST), show good performance with natural frequencies of JSB 4.093 Hz and JST 4.956 Hz, higher than the theoretical 4.002 Hz. This indicates that the actual stiffness is higher than the theoretical. The actual damping ratio of JSB is 2.138%, and that of JST is 2.883%, these values fall into the category of intact concrete. Based on the dynamic parameter assessment, the bridge is declared fit for function.