| 研究生: |
鄭人友 Cheng, Jen-Yu |
|---|---|
| 論文名稱: |
具開口部磚牆震後鋼絲網補強 Post Damaged Experimental Study of Masonry Wall with Opening Repaired with Wire Mesh |
| 指導教授: |
張嘉祥
Chang, Ja-Shian 陳柏年 Chen, Po-Nien |
| 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: | 2014 |
| 畢業學年度: | 102 |
| 語文別: | 中文 |
| 論文頁數: | 110 |
| 中文關鍵詞: | 開口部 、鋼絲網補強 、強度計算 |
| 外文關鍵詞: | Opening, reforced with wire mesh, strength calculation |
| 相關次數: | 點閱:97 下載:2 |
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鋼絲網補強具有:工期短、提高剛度、低成本、施作方便及損壞後易於拆除修復之優點,目前常被古蹟及歷史建築修復保存者應用於砌體造牆體之補強。本研究藉由規劃六道裂損牆體進行鋼絲網補強之面內加載實驗,探討補強牆體之結構行為與破壞模式。根據本研究之實驗結果可發現:
1. 無邊界圍束受面內加載時,牆體易產生撓曲破壞;當試體於施力側邊有邊界圍束時,對於試體抵抗水平外力有較好之效益。
2. 試體之開口越多時(開口部總面積不變),補強層所提供之補強效益會較低。因開口部與牆體邊緣之寬度較小,使得補強層無法提供較為完整之補強效益。
3. 鋼絲網之補強效益於反覆加載時,牆體逐漸產生有提昇牆體韌性之作用,吸收能量之效果明顯改善。
4. 鋼絲網之補強後,連續開口間壁體上下緣之水平裂縫產生後,仍能將整道牆體撐住,試體極限加載係在連續開口間壁體產生剪力裂縫時。
5. 實驗結果與補強計算比較顯示,計算結果為試體斜向裂縫發展完成之裂損加載,而並非極限加載。
Summary
Masonry wall repaired with wire mesh, such as short erection duration, good stiffness, low-cost, ect. For this reason, wire mesh currently used in retrofit of masonry walls of historical buildings are very often in Taiwan. The study carried out the experiment of six post damaged masonry walls retrofited by wire mesh under the controlled in plane loading. Based upon the test results, the resistant calculation for a masonry wallusing the available method is near to the crack load obtaineds in the test.
Keyword: Opening, reforced with wire mesh, strength calculation
There are several advantages for masonry wall repaired with wire mesh, such as short erection duration, good stiffness, low-cost, ect. For this reason, wire mesh currently used in retrofit of masonry walls of historical buildings are very often in Taiwan. However, the detail structure behavior and design calculation are still not completely investigated. The study carried out the experiment of six post damaged masonry walls retrofited by wire mesh under the controlled in plane loading. Based upon the test results, the retrofited wall behavior and the failure modes are deeply discussed and compared in this thesis.
1. The specimen without confined boundaries is easy to occur produce flexural failure. However, the specimen with confined boundaries will perform a better structure behavior and higher resistancy under the action of horizonal load.
2. The specimen with more number of openings, the resistant capability of horizontal load will be lower, even the total opening area is the same. The main reason is the wall width between opening edge and the boundary will be reduce.
3. The specimen retrofitted with wire mesh provides better ductility under repeated loading.
4. According to the test for a specimen with opening and boundaries, the linit loading is higher than crack loading. The main reason is the specimen still have some capability to resisit shear force, even the specimen have generated horizontal flexural crack previously in the upper and lower edge.
5. Due to the comparision, the resistant calculation for a masonry wall using the available method is near to the crack load obtaineds in the test.
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