【摘要】：相比于框架結構,剪力墻結構的最大的特點是抗側剛度較大,能夠減小水平荷載作用下結構的側向位移,并且能夠承擔60%以上的總體剪力,剪力墻結構已在高層建筑中日益得到應用。型鋼混凝土(SRC)異形柱結構在建筑上具有得房率高,便于家具擺放等顯著優(yōu)點,而且極大程度地改善了普通鋼筋混凝土(RC)異形柱結構抗剪承載力低、抗震性能不足等缺陷,在工程應用上具有很大的發(fā)展?jié)摿�。將SRC異形柱框架與鋼筋混凝土剪力墻進行組合,形成一種新的結構—SRC異形柱框架-剪力墻結構,能兼有SRC異形柱抗震延性好和剪力墻抗側剛度較大的優(yōu)勢,目前對此類結構的研究還處于探索階段。本文以SRC異形柱框架剪力墻為研究對象,首先基于Opensees在構件層次上進行靜力彈塑性分析(Pushover分析)和滯回性能分析,然后制作了相同尺寸及配筋的試件進行抗震性能試驗,最后以20層整體結構為對象,進行多模態(tài)的Pushover分析(MPA),具體內容如下:(1)對SRC異形柱框架結構和RC異形柱框架剪力墻結構的國內外研究動態(tài)進行了闡述,對剪力墻結構的抗震性能進行了論述,并提出了一些可能需要進一步研究的問題。(2)以一榀帶SRC異形邊框柱剪力墻為研究對象,并以相同尺寸建立了一榀普通的鋼筋混凝土剪力墻,使用Opensees有限元軟件對兩種剪力墻進行了Pushover分析和滯回性能分析,重點分析抗剪承載力、位移延性系數(shù)、耗能能力和剛度退化等抗震性能指標,進一步對帶SRC異形邊框柱剪力墻進行了變參數(shù)分析,研究了軸壓比、混凝土強度、型鋼屈服強度等因素對混合剪力墻抗震性能的影響規(guī)律。(3)制作一榀帶SRC異形邊框柱剪力墻試件,通過試驗深入研究這種結構在水平荷載作用下的的破壞機理。對該試件進行單向推覆加載,觀察混合剪力墻的裂縫發(fā)展和破壞情況,研究該混合剪力墻隨著位移增大,試件承載力和剛度的變化情況,分析該混合剪力墻的延性和位移角是否符合抗震設計的要求。(4)對20層的SRC異形柱框架-剪力墻平面結構進行有限元分析,利用MPA方法,根據性能點對應的結構層間位移角大小驗證結構的抗震性能滿足要求,通過改變混凝土強度改變剪力墻的剛度比,研究對該類框剪結構抗震性能的影響規(guī)律。
[Abstract]:Compared with the frame structure, the biggest characteristic of the shear wall structure is that the lateral stiffness is larger, the lateral displacement of the structure can be reduced under horizontal load, and the overall shear force can be more than 60%. Shear wall structure has been increasingly used in high-rise buildings. The steel reinforced concrete (SRC) special-shaped column structure has the advantages of high building yield and convenient furniture arrangement, and greatly improves the low shear capacity of the ordinary reinforced concrete (RC) special-shaped column structure. Lack of seismic performance and other defects have great development potential in engineering applications. The SRC special-shaped column frame and reinforced concrete shear wall are combined to form a new kind of structure-SRC special-shaped column frame-shear wall structure, which has the advantages of good seismic ductility of SRC special-shaped column and great lateral stiffness of shear wall. At present, the study of this kind of structure is still in the exploratory stage. In this paper, SRC special-shaped column frame shear wall is taken as the research object. Static elastic-plastic analysis (Pushover) and hysteretic performance analysis are carried out on the basis of Opensees at the member level, and then the specimens of the same size and reinforcement are made for seismic performance test. Finally, taking the 20-story whole structure as the object, the concrete contents of the multi-modal Pushover analysis of (MPA), are as follows: (1) the domestic and foreign research trends of SRC special-shaped column frame structure and RC special-shaped column frame shear wall structure are expounded. The seismic behavior of shear wall structure is discussed, and some problems that may need further study are put forward. (2) taking a SRC special-shaped frame column shear wall as an object of study, A common reinforced concrete shear wall is established with the same size. The Pushover analysis and hysteretic performance analysis of two kinds of shear walls are carried out by using Opensees finite element software, and the shear bearing capacity and displacement ductility coefficient are analyzed emphatically. Based on the seismic performance indexes such as energy dissipation capacity and stiffness degradation, the variable parameter analysis of shear wall with SRC special-shaped frame column is carried out, and the axial compression ratio and concrete strength are studied. The influence of yield strength of steel on the seismic behavior of mixed shear wall. (3) A specimen of shear wall with SRC special-shaped frame column is made, and the failure mechanism of the structure under horizontal load is studied deeply through experiments. The specimen was subjected to unidirectional push-over loading to observe the crack development and failure of the mixed shear wall, and to study the variation of the bearing capacity and stiffness of the composite shear wall with the increase of displacement. The ductility and displacement angle of the hybrid shear wall are analyzed whether it meets the requirements of seismic design. (4) finite element analysis of 20-story SRC special-shaped column frame-shear wall plane structure is carried out, and the MPA method is used. According to the inter-story displacement angle corresponding to the performance point to verify the seismic performance of the structure meets the requirements, by changing the concrete strength to change the stiffness ratio of the shear wall, the influence law on the seismic performance of this kind of frame-shear structure is studied.
【學位授予單位】：蘇州科技大學
【學位級別】：碩士
【學位授予年份】：2016
【分類號】：TU398.2;TU352.11

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