低矮型鋼板混凝土複合牆與鋼筋混凝土牆平面內側向強度之比較研究

Lateral Strength of Squat Steel-Plate-Concrete Composite and Squat Reinforced Concrete Walls

孔文亮(Van-Sang Khong)

指導教授 ： 黄尹男

國立臺灣大學/工學院/土木工程學研究所/碩士(2015年)

https://doi.org/10.6342/NTU.2015.00317

摘要

該研究主要集中在矩形鋼盤混凝土（SC）複合而蹲鋼筋混凝土（RC）腹壁的橫向強度。一個實驗方案是在NCREE實驗室在國立台灣大學執行，其次是數值模擬和分析研究。在實驗方案，一個RC和2個SC牆下位移控制循環荷載進行了測試。在鋼筋混凝土牆標本，其在測試程序考慮的設計變量包括壁厚，配筋率和混凝土抗壓強度。壁的縱橫比（高度與長度）為0.5。在這項研究中考慮的SC牆壁由兩個鋼製面板和填充混凝土。鋼面板連接到一起，並充填混凝土使用拉桿和螺栓領導分別。在鋼筋混凝土試樣觀察到損失是在第一裂化形成在對角方向。嚴重損害然後集中在壁的中高層次，並沿載荷傳遞鋼樑。在SC壁標本損傷的進展是相同的，即，龜裂和充填混凝土在壁的腳趾粉碎，向外屈曲和屈服壁的面板的基礎上，和撕裂靠近鋼面板的。有限元模型的開發在LS-DYNA確定RC牆的單調響應。使用鋼筋混凝土牆樣品的循環試驗的結果的DYNA模型進行了驗證。分析模型也驗證使用的測試數據。的驗證和基準方程然後用於進行參數研究，該研究在RC和SC壁的橫向強度的壁高寬比，配筋率，壁厚，和單軸混凝土抗壓強度的影響。

關鍵字

鋼板 ； 混凝土 ； 複合牆 ； 鋼筋混凝土

並列摘要

The research focused on the lateral strength of rectangular steel-plate-concrete (SC) composite and squat reinforced concrete (RC) walls. An experimental program was executed in the NCREE laboratory at the National Taiwan University and was followed by numerical and analytical studies. In the experimental program, one RC and two SC walls were tested under displacement-controlled cyclic loadings. The RC wall specimen, its design variables considered in the testing program included wall thickness, reinforcement ratio, and concrete compressive strength. The aspect ratio (height-to-length) of the walls was 0.5. The SC walls considered in this study were composed of two steel faceplates and infill concrete. The steel faceplates were connected together and to the infill concrete using tie rods and headed studs, respectively. Observed damages in RC specimen were formed in the diagonal direction at first cracking. Severe damages were then concentrated at the mid-high level of the wall and along the load transferring steel beams. The progression of damage in the SC wall specimens were identical, namely, cracking and crushing of the infill concrete at the toes of the walls, outward buckling and yielding of the steel faceplates near the base of the wall, and tearing of the faceplates. A finite element model was developed in LS-DYNA to determine the monotonic response of RC walls. The DYNA model was validated using the results of the cyclic tests of the RC wall specimen. The analytical models were also verified using the test data. The validated and benchmarked equations were then used to conduct a parametric study, which investigated the effects of wall aspect ratio, reinforcement ratio, wall thickness, and uniaxial concrete compressive strength on the lateral strength of RC and SC walls.

並列關鍵字

Squat wall ； reinforced concrete ； lateral strength ； reinforcement ratio

參考文獻

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