Planning of Bridge Experiments and Numerical Comparisons

• Main Authors: Yu-KaiChou, 周郁凱
• Other Authors: Shen-Haw Ju
• Format: Others
• Language: zh-TW
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/21419313784850384978

碩士 === 國立成功大學 === 土木工程學系 === 103 === The content of the thesis is divided into three parts: The first part is to introduce the instruments and programs. A number of different kinds of instruments were used in the bridge experiment, but parts of them cannot be directly used to the field experiment, because a modification of the instruments is often required to fit the field environment. The second chapter shows the introduction part of these measuring instruments and aids. That chapter then also describes the required software including the Matlab GUI graphics program and partial update of the monitoring program written by the author. The second part mentioned in Chapter three is to set up and test instruments for planning. Equipment planning sets up most of the major long-term monitoring of bridges in the description of the layout of the instrument, which also includes the problems and solution methods during the experiments. The experiment planning section shown in Chapter three explained how to perform the planning for the bridge forced vibration experiments, including the setup of the monitoring equipment, the MK-155U Eccentric Mass Vibrator System, and the required testing procedures. The details of these plans will be described in detail in the third chapter. The third part is to use the finite element analysis software to perform the numerical simulation. The main purpose of this part is to compare between field test and finite element results. The fourth chapter presents the whole bridge model using the finite element method in detail, and how to use the computer to set the forced vibration test with appropriate external forces was also mentioned, so that one can clearly understand the finite element model using the SAP2000 software. The last chapter analyzes and compares the results of computer simulation data and force vibration test data. The comparison and analysis contain three parts, including the comparison of the bridge natural frequency, acceleration values and the energy dissipation of the LRB. Through the comparison and analysis, one can understand the LRB impact on the overall behavior of prestressed concrete bridges in detail.