| 研究生: |
沈德厚 Shen, Te-hou |
|---|---|
| 論文名稱: |
電梯平衡配重系統脫軌機制研究 A Study of Derailment Mechanism of Elevator Counterweight Systems |
| 指導教授: |
姚昭智
Yao, George C |
| 學位類別: |
碩士 Master |
| 系所名稱: |
規劃與設計學院 - 建築學系 Department of Architecture |
| 論文出版年: | 2003 |
| 畢業學年度: | 91 |
| 語文別: | 中文 |
| 論文頁數: | 167 |
| 中文關鍵詞: | 導軌 、地震模擬台實驗 、脫軌機制 、平衡垂框導軌 |
| 外文關鍵詞: | shaking table tests, derailment mechanism, Counterweight, guide rail |
| 相關次數: | 點閱:114 下載:10 |
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本文以足尺寸導軌與平衡配重系統的地震模擬台試驗,針對國內使用最多的15人座與8人座電梯平衡配重系統搭配8K、5K導軌進行研究,分別以2500㎜與2800跨度、加裝補強扥架,探討受面內(X向)、面外(Y向)與雙軸(X、Y向)地震力時的互制行為與脫軌機制。經由實驗評估其耐震能力及適用性,最後並檢討現行電梯設備耐震設計規範,對導軌受地震力的變形量估計是否適用。
導軌與平衡配重系統地震模擬台試驗得知以下結果,(1)平衡配重脫軌主因為:面內向受撞擊側導軌變形量大於另一側導靴與導軌接合值,再加上面外的推力而造成脫軌。(2)導軌加裝補強扥架,在實驗中得知確實能有效提高導軌與平衡配重系統耐震能力。(3)地震力過後的導軌與扥架殘留變形張開量會影響日後電梯平順運行。(4)現行電梯構造的扥架在地震中會產生很大的變形,尤其在加裝補強扥架時,因此在導軌彎曲度計算時扥架的變位必須一併考慮。(5)若依據IBC2000的耐震設計原則,數值分析結果顯示8人座5K導軌系統的耐震力,只能適用於台灣的部分建築內。
(6)ANSYS數值分析結果顯示出國內習用規範對地震力設計不足。
This thesis performed shaking table tests on full-scale elevator counterweight (CW) systems currently used in Taiwan. CW were tested for the 8- and 15-passenger systems each corresponding to 5K and 8K CW rail size. Other parameters investigated including: bracket distance (2500 and 2800 mm), tie-bracket, biaxial excitation. The main purpose is to investigate the interaction and derailment mechanism of CW and guide rail systems. Finally, numerical analysis was performed and the results were used to discuss the appropriateness of current design code for elevators.
Conclusions from this study are as followings:
1) The Main reason for CW derailment is due to the in-plane impact of CW and rails that enlarges the distance between the two rails to exceed the guide shoes depth. Out-of-plane excitation may deteriorate the above condition further.
2) Tie-bracket installed on CW rail system will improve the seismic capacity of the CW system.
3) Residual deformation of guide rail and rail brackets from a major seismic event may cause deformation large enough to interfere the operation of an elevator.
4) Brackets sizes used in the current practice will deform largely in earthquakes in contrast to the zero-deformation assumption used at the design stage.
5) Analysis results indicate that the widely used 8-passenger and 5K-CW rail system can only be suitable in a limited application in Taiwan based on the latest IBC 2000 code.
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