本文以有限元素分析軟體進行RC剪力牆的分析,從模型建立、破壞型態、裂縫分佈位置及裂縫演化過程加以分析。以ANSYS套裝軟體,針對不同高寬比及配筋型式之純RC剪力牆及含RC剪力牆構架建立數值模型。數值模型包含元素模型、材料模型及實體模型,最後組合成有限元素模型。元素模型係利用三維實體元素模擬混凝土,鋼筋則以三維線元素。材料模型以多線性等向硬化(Multilinear Isotropic)材料模型模擬鋼筋及混凝土應力-應變曲線之彈塑非線性材料行為。實體模型則依照牆體配筋及斷面尺寸建立而成。分析之文獻試體為四座傳統配筋剪力牆及一座改良配筋剪力牆,傳統配筋剪力牆當中,兩座為高型剪力牆,另兩座為中型剪力牆,改良配筋剪力牆則為中型剪力牆且以45度斜向配筋,分別進行線彈性及彈塑非線性剪力牆側推分析,預測裂縫可能發生之位置以及元素破裂面,判定剪力牆破壞型態以及裂縫演化過程。將分析結果與文獻中實驗進行比對,分析之裂縫發生範圍、位置、裂縫方向與演化狀況與實驗相似,並且不受限於高型或是中型的剪力牆亦或是改良配筋,皆可達到良好的預測結果。極限位移誤差百分比平均為4.68 %﹔極限載重誤差百分比平均為8.03 %,並且力與位移分析結果整體趨勢與實驗分析結果相似。本研究之成果可觀測牆體裂縫分佈、趨勢及演化並依其狀況設計改良型RC剪力牆配筋。
In this thesis, finite element analysis are performed on the cracking distribution and evolution reinforced concrete walls by using ANSYS program. Reinforced concrete walls are analyzed by incorporating the element models, material models and virtual models. The link model and solid model were used to simulated reinforced steel bar and concrete respectively. In terms of the stress-stain relationship of reinforced steel bar and concrete to establish the nonlinear material models with multilinear isotropic law. Virtual models are created based on the dimensions of the RC walls and integrated with element models and material models to performed finite element models. Four traditional reinforced concrete walls with horizontal and vertical steel bars, two of these traditional RC walls are high-rise and other two are mid-rize, and one new RC wall was used also. These RC walls analyzed with finite element method to obtain the cracking distribution and evolution of RC walls. The analytical results of the RC walls showed the cracking distribution and evolution approximated to the experimental results, and the errors of ultimate lateral force are averaged about 4.68 %. In this thesis, cracking distribution and evolution of RC walls can be predicted with finite element method with ANSYS program.