研究生: |
周延 Yen Chou |
---|---|
論文名稱: |
不同型式之特殊邊界構材於低矮剪力牆往復載重行為研究 Cyclic Behavior of RC Squat Wall with Different Arrangements of Special Boundary Elements |
指導教授: |
鄭敏元
Min-Yuan Cheng |
口試委員: |
黃世建
Shyh-Jiann Hwang 邱建國 Chien-Kuo Chiu |
學位類別: |
碩士 Master |
系所名稱: |
工程學院 - 營建工程系 Department of Civil and Construction Engineering |
論文出版年: | 2018 |
畢業學年度: | 106 |
語文別: | 中文 |
論文頁數: | 142 |
中文關鍵詞: | 邊界構材 、低矮型 、剪力牆 、高強度 |
外文關鍵詞: | boundary element, wall, low-rise, squat |
相關次數: | 點閱:300 下載:8 |
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本研究根據過去試驗結果(Cheng 等學者, 2016、Wibowo , 2017),以已測試
之兩組試體(分別為試體 H60 與 HHH_B_1.0)為基礎,規劃並測試另外三組剪力
跨距比皆為 1.0(hw⁄ℓ௪ = 1.0)但不同邊界構材型式之低矮剪力牆試體,目的欲探
討低矮剪力牆於往復載重行為之影響。除試體HHH_B_1.0 (Wibowo , 2017)使用
高強度混凝土與鋼筋外,所有試體之面內剪應力需求(Vmpr)一致,即試體於牆底
發展可能彎矩強度Mpr所對應的正規化剪應力值,約為10ටf'c(psi) or 0.83ටf'c(MPa),
試體 HHH_B_1.0 因使用高強度混凝土使面內剪應力略微降低,約為約為
7.44ටf'c (psi) 或 0.62ටf'c(MPa)。根據實驗結果所得之結論顯示,根據牆底發展之
撓曲強度所對應剪力,能夠準確地預估試體的最大側向力。另一方面,使用槓鈴
形斷面能夠提升試體在過最大側向力後減緩力量的損失,使試體達更長遠的變形,
於此之上,使用抗壓強度約83 MPa (12 ksi)之高強度混凝土與降伏強度超過827
MPa (120 ksi)之高強度鋼筋更加提高試體之變形能力。
According to specimen H60 (Cheng, et al.) and HHH_B_1.0 (Wibowo , 2017) were test in the past. An experimental program consisting of three specimens were conducted to evaluate effects of different arrangements of boundary elements on cyclic responses of reinforced concrete (RC) squat wall with a shear span-to-length ratio, hw⁄ℓ௪ , of 1.0. Except specimen HHH_B_1.0 (Wibowo , 2017) using high-strength concrete and steel, all test specimens are designed to have shear stress demand associated with the development of probable flexural strength approaching 10ටf'c(psi) or 0.83ටf'c(MPa). Shear stress demand in specimen HHH_B_1.0 was slightly reduced due to the use of high-strength concrete. Test results show that peak strengths of all test specimens can be satisfactorily predicted by nominal flexural strength. Specimen deformation capacity is more effectively increased by the use of barbell shape boundary elements at ends of the wall. Specimen deformation capacity is further increased when high-strength materials including concrete with cylinder strength of around 12 ksi (83 MPa) and steel with tested yield stress exceeding 120 ksi (827 MPa) are used.
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