| Summary: | 碩士 === 國立中興大學 === 土木工程學系 === 85 === The purpose of this dissertation is to determine the axial
forcein a column of a "two-bay and one-story" Scaffold by
vibrationalexperiment.The relationship between the scaffold
structure's capacity and the real loading situation has a great
influence on the safety of work sites.What is more,the boundary
conditions are very important in determining the structure's
ultimate capacity. However,without using strain gages ,load
cell,transducers or other instruments,the real loading
situation within the supportingcolumn can not be found.
Therefore, the present experiment is completed using the
personal computer to control the other supporting equipment,such
as accerlometer, impulse hammer,PCB amplifier, and analog to
digital converter. During the experiment, strain gages and the
load cell are used to monitor and to record the column's
loading situation, and the data are read and recorded by the
data loggerand the computer. Based on the vibrational time
history data, the fundamental frequency and the shape function
can be found. Then, the data and the material's properties can
be used to solve the equation which was previously derived to
determine the theoretical axial force . This computed
theoretical axial force is compared with the real loads recorded
by the load cell.
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