| 研究生: |
周郁凱 Chou, Yu-Kai |
|---|---|
| 論文名稱: |
橋梁試驗規劃與數值比較 Planning of Bridge Experiments and Numerical Comparisons |
| 指導教授: |
朱聖浩
Ju, Shen-Haw |
| 學位類別: |
碩士 Master |
| 系所名稱: |
工學院 - 土木工程學系 Department of Civil Engineering |
| 論文出版年: | 2015 |
| 畢業學年度: | 103 |
| 語文別: | 中文 |
| 論文頁數: | 236 |
| 中文關鍵詞: | 橋梁動力試驗 、無線網路監測 、橋梁監測有限元素法 、鉛心支承墊 (LRB) 、橋梁模型 、數值模擬 |
| 外文關鍵詞: | Bridge dynamic test, Wireless network monitoring, Bridge monitoring, FEM, LRB, Bridge modal, Numerical simulation |
| 相關次數: | 點閱:185 下載:8 |
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本論文內容主要分為三個部分:第一部分主要是在進行儀器和程式的介紹,這次所使用到的儀器種類眾多,且大部分都無法直接拿到工地進行使用,必須透過一些自行製作的輔助工具才有辦法在現場進行長時間量測,所以在第二章節部分主要就是在介紹這些量測儀器以及輔助工具,另外在此章節內還會介紹軟體的部分,包括使用Matlab自行撰寫的GUI繪圖程式以及進行了部分更新的監測程式。
第二部分是儀器架設以及實驗進行規劃,儀器架設規劃的部份主要在說明橋梁進行長期監測時儀器的佈置方式,當中也包括許在架設時所遇到的問題以及最後如何解決問題得過程,這些都會在第三章節說明。在實驗規劃部分,則是在說明如何規劃這次橋梁強制振動試驗,其中包括監測儀器架設、離心質量機架設、試驗流程…等等,這些規劃細節都會在第三章節中詳細地進行說明。
第三部分則是利用有限元素分析軟體進行試驗的模擬,主要目的是利用電腦模擬的方式和現場試驗數據進行分析比較,在本論文第四章節會把橋梁整體模型建置的過程非常清楚地說明,並對如何利用電腦設定強制振動試驗外力部分也進行非常完整的說明,讓讀者能清楚地了解到利用SAP2000建立模型的整個過程。最後第五章則是利用電腦運算所得出的數值和現地強制振動試驗所取得的數據進行分析與比較,這部分的分析比較主要分為三部分,包括橋梁自然頻率關係的比較、加速度數值以及鉛心支承墊(LRB)消能情況的比較,透過這三部分的交叉比較分析,就能更完整的了解到LRB對於預力混凝土橋梁整體行為的影響。
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.
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