【摘要】：鋼板剪力墻結(jié)構(gòu)由內(nèi)填鋼板和框架梁柱組成,具有初始側(cè)向剛度大,滯回性能穩(wěn)定,耗能能力良好,延性大等優(yōu)點,是多高層鋼結(jié)構(gòu)建筑中經(jīng)濟、高效的抗側(cè)力結(jié)構(gòu)體系。目前對該體系的分析都是基于梁柱剛接或鉸接的假定,但大量的研究已經(jīng)證明,工程中節(jié)點的實際性能是介于兩種情況之間的半剛性連接,而節(jié)點的柔性將會對結(jié)構(gòu)的內(nèi)力、位移和穩(wěn)定等性能產(chǎn)生相應(yīng)的影響,因此對半剛性框架——鋼板剪力墻體系進行研究是很有實際意義的。平齊端板作為一種典型的半剛性連接形式,構(gòu)造簡單,施工快捷,同時可以改善結(jié)構(gòu)的耗能和延性,本文首次將平齊端板連接的半剛性鋼框架與不同形式的鋼板剪力墻相結(jié)合,形成新的結(jié)構(gòu)體系形式,既可以發(fā)揮鋼板剪力墻的延性和剛度,又可以利用半剛性框架的延性。通過試驗研究與有限元分析相結(jié)合的方法,本文系統(tǒng)地評估了該新型結(jié)構(gòu)的整體性能。主要研究內(nèi)容如下:1)對三榀平齊端板連接的單跨二層的半剛性框架——鋼板剪力墻結(jié)構(gòu)進行了低周反復(fù)荷載的擬靜力試驗研究,從耗能能力,承載力,延性,應(yīng)力分布,墻板協(xié)同工作機理等方面揭示了該體系的內(nèi)力轉(zhuǎn)換和耗能機理。2)研究了平齊端板連接的半剛性框架——鋼板剪力墻新型結(jié)構(gòu)體系的受力機理和破壞模式,分析了當(dāng)鋼板墻采用三種不同形式(非加勁薄板、十字加勁板、斜加勁板)時對整體結(jié)構(gòu)的承載力、滯回性能、墻板應(yīng)力和變形發(fā)展的影響。3)采用SHELL181單元模擬鋼板墻,Combin39彈簧單元模擬半剛性節(jié)點,通過ANSYS有限元軟件計算了薄鋼板墻、十字加勁鋼板墻、斜加勁鋼板墻三種試件在單向荷載和循環(huán)荷載作用下的應(yīng)力與變形發(fā)展,通過與試驗結(jié)果對比,證實了該有限元模型可以準確地模擬半剛接框架——鋼板剪力墻結(jié)構(gòu)的屈曲后性能,是一種有效的數(shù)值分析手段。4)應(yīng)用ANSYS有限元程序?qū)ζ烬R端板連接的半剛性框架-鋼板剪力墻體系進ii行變參數(shù)分析,分析鋼板墻厚度、邊框架柱截面慣性矩和加勁肋截面慣性矩對結(jié)構(gòu)整體性能的影響。5)根據(jù)KishiChen冪函數(shù)模型計算平齊端板連接的彎矩-轉(zhuǎn)角關(guān)系曲線,在此基礎(chǔ)上,對比試驗中采用不同半剛性節(jié)點連接(栓焊連接、平齊端板連接和雙腹板頂?shù)捉卿撨B接)時試件的整體受力性能,此外,采用ANSYS有限元軟件,分析節(jié)點鉸接、半剛接、剛性連接對非加勁、十字加勁、斜加勁三種鋼板剪力墻結(jié)構(gòu)極限承載力的影響。通過上述研究表明,半剛性框架——鋼板剪力墻結(jié)構(gòu)具有優(yōu)秀的抗側(cè)力性能,通過研究該體系的各項性能,可以為日后的工程實踐提供理論依據(jù)。
[Abstract]:The steel plate shear wall structure is composed of inner filled steel plate and frame Liang Zhu. It has the advantages of high initial lateral stiffness, stable hysteretic performance, good energy dissipation ability and large ductility. It is an economical and efficient lateral force resisting structure system in many high-rise steel structures. At present, the analysis of the system is based on the assumption of Liang Zhu rigid connection or hinge connection, but a large number of studies have proved that the actual performance of the joint in engineering is a semi-rigid connection between the two cases, and the flexibility of the joint will affect the internal force of the structure. Displacement and stability have a corresponding effect, so it is very important to study the semi-rigid frame-steel plate shear wall system. As a typical semi-rigid connection form, the flat end plate is simple in construction, quick in construction, and can improve the energy dissipation and ductility of the structure. In this paper, the semi-rigid steel frame connected with the horizontal end plate is first combined with different forms of steel plate shear wall. The new structural system can not only give play to the ductility and stiffness of steel plate shear wall, but also make use of the ductility of semi-rigid frame. In this paper, the overall performance of the new structure is systematically evaluated by combining the experimental research with finite element analysis. The main research contents are as follows: 1) the quasi-static test of three single-span and two-story semi-rigid frame-steel shear wall structures with flat end plate connection under low cyclic loading is carried out, and the energy dissipation capacity, bearing capacity, ductility, stress distribution are analyzed. The mechanism of internal force conversion and energy dissipation of the system is revealed in terms of the working mechanism of wall panels. 2) the mechanical mechanism and failure mode of a new type of steel plate shear wall structure system, which is a semi-rigid frame-steel shear wall with flat end plate connection, is studied. The load-carrying capacity and hysteretic behavior of the whole structure are analyzed when the steel plate wall adopts three different forms (non-stiffened plate, cross-stiffened plate and inclined stiffened plate). 3) SHELL181 element is used to simulate the steel plate wall, and Combin39 spring element is used to simulate the semi-rigid joint. The thin steel plate wall and the cross stiffened steel plate wall are calculated by ANSYS finite element software. The stress and deformation development of three kinds of specimens of inclined stiffened steel plate wall under unidirectional and cyclic loads are compared with the test results. It is proved that the finite element model can accurately simulate the post-buckling behavior of semi-rigid frame-steel shear wall structures. It is an effective method for numerical analysis. 4) the ANSYS finite element program is used to analyze the variable parameters of the semi-rigid frame-steel shear wall system with horizontal end plate connection, and the thickness of the steel plate wall is analyzed. The influence of moment of inertia of column section and moment of inertia of stiffened rib section on the overall performance of the structure. 5) based on the KishiChen power function model, the moment-angle curve of flat end-plate connection is calculated. The overall mechanical properties of the specimens are analyzed by using ANSYS finite element software when different semi-rigid joints (butt welding, flat end plate connection and double web top and bottom angle steel connection) are used to analyze the joint hinge and semi-rigid connection. The influence of rigid connection on the ultimate bearing capacity of three kinds of steel plate shear wall structures: non-stiffening, cross-stiffening and oblique stiffening. The above research shows that the semi-rigid frame-steel plate shear wall structure has excellent lateral force resistance, and the study of the performance of the system can provide a theoretical basis for the engineering practice in the future.
【學(xué)位授予單位】：西安建筑科技大學(xué)
【學(xué)位級別】：博士
【學(xué)位授予年份】：2015
【分類號】：TU398.2

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