發(fā)布時(shí)間：2018-03-05 17:46

  本文選題：鋼板剪力墻　切入點(diǎn)：地震力調(diào)整系數(shù)　出處：《西安建筑科技大學(xué)》2014年博士論文　論文類(lèi)型：學(xué)位論文

【摘要】：鋼板剪力墻結(jié)構(gòu)是近年來(lái)發(fā)展的一種有效的側(cè)向支撐體系,目前對(duì)該體系的研究大多關(guān)注于構(gòu)件層次上,而對(duì)其設(shè)計(jì)方法的研究分析較少,很大程度上阻礙了鋼板剪力墻結(jié)構(gòu)的應(yīng)用。另外,隨著抗震設(shè)計(jì)理論的發(fā)展及建筑物可靠度要求,對(duì)結(jié)構(gòu)提出了基于性能的抗震設(shè)計(jì)要求。因此,針對(duì)鋼板剪力墻結(jié)構(gòu)基于性能的設(shè)計(jì)方法的研究是推廣和使用這種有效的抗側(cè)力體系的關(guān)鍵。本文針對(duì)鋼板剪力墻結(jié)構(gòu),從性能目標(biāo)的制定、量化以及如何實(shí)現(xiàn)展開(kāi)研究,系統(tǒng)的完善了鋼板剪力墻結(jié)構(gòu)基于性能的設(shè)計(jì)方法。主要研究?jī)?nèi)容如下:針對(duì)鋼板剪力墻結(jié)構(gòu)受力及變形特點(diǎn),結(jié)合本文試驗(yàn)研究結(jié)果及國(guó)內(nèi)外試驗(yàn)數(shù)據(jù),提出鋼板剪力墻結(jié)構(gòu)性能水平及其量化指標(biāo),建立了基于性能的抗震設(shè)防準(zhǔn)則。并通過(guò)對(duì)3組不同高度的鋼板剪力墻結(jié)構(gòu)的梁殼模型及拉桿條模型進(jìn)行了推覆分析,驗(yàn)證了所提指標(biāo)的合理性。分析我國(guó)抗震設(shè)計(jì)方法及其不足,明確抗震設(shè)防的核心目標(biāo)是中震設(shè)防。通過(guò)對(duì)不同高度、跨度的六組算例的Pushover分析及IDA增量動(dòng)力分析,得到了不同性能指標(biāo)下結(jié)構(gòu)的地震力調(diào)整系數(shù)。利用地震力調(diào)整系數(shù),提出了基于中震的性能化設(shè)計(jì)方法。另外,通過(guò)分析得出鋼板剪力墻結(jié)構(gòu)具有較高的超強(qiáng)系數(shù)RΩ,結(jié)構(gòu)超強(qiáng)是地震力調(diào)整系數(shù)的最主要組成部分。通過(guò)對(duì)3個(gè)框架-鋼板剪力墻結(jié)構(gòu)的擬靜力試驗(yàn)研究,考察結(jié)構(gòu)的受力機(jī)理,變形破壞模式,延性、耗能能力等抗震性能指標(biāo),并通過(guò)有限元分析得到了相應(yīng)的研究成果�；谇按窝芯砍晒匦略O(shè)計(jì)了兩榀鋼框架-密肋網(wǎng)格鋼板剪力墻結(jié)構(gòu),并對(duì)其進(jìn)行了試驗(yàn)研究及有限元分析,驗(yàn)證了之前的研究成果,同時(shí)為后續(xù)研究及應(yīng)用提供了基礎(chǔ)。通過(guò)對(duì)3組算例進(jìn)行動(dòng)力時(shí)程分析,考察結(jié)構(gòu)在各級(jí)地震下的破壞形態(tài),位移指標(biāo),結(jié)構(gòu)剪力分配方式等相關(guān)設(shè)計(jì)要素。討論了鋼板剪力墻結(jié)構(gòu)支撐架的類(lèi)別,鋼板剪力墻結(jié)構(gòu)一般為彎曲型或彎剪型失穩(wěn),不同的失穩(wěn)類(lèi)別對(duì)外框架的剛度及強(qiáng)度要求不同。利用支撐架剛度代表層的彎曲與剪切承載力的比例,給出了支撐架類(lèi)別的判別方法,同時(shí)結(jié)合算例結(jié)果,提出了彎曲型及彎剪型支撐架與外框架的剪力分配要求。最后,針對(duì)鋼板剪力墻結(jié)構(gòu)設(shè)計(jì)的相關(guān)問(wèn)題進(jìn)行研究,提出鋼板剪力墻的邊柱需滿(mǎn)足墻板材料超強(qiáng)的要求,以充分發(fā)揮墻板材料性能,為墻板提供可靠的錨固作用,并對(duì)梁、板的設(shè)計(jì)提出了相關(guān)建議。討論對(duì)比了現(xiàn)有簡(jiǎn)化模型的優(yōu)缺點(diǎn),建議彈性設(shè)計(jì)時(shí)可采用TSM模型,當(dāng)需要對(duì)結(jié)構(gòu)進(jìn)行彈塑性分析時(shí),選用SM模型。并通過(guò)兩個(gè)算例系統(tǒng)的說(shuō)明了鋼板剪力墻結(jié)構(gòu)基于性能的抗震設(shè)計(jì)方法。
[Abstract]:Steel plate shear wall structure is an effective lateral bracing system developed in recent years. In addition, with the development of seismic design theory and the requirement of building reliability, the performance-based seismic design requirements are put forward. The research on performance-based design method of steel plate shear wall structure is the key to popularize and use this effective lateral force resistance system. The main contents are as follows: according to the stress and deformation characteristics of steel plate shear wall structure, combined with the experimental results of this paper and domestic and foreign experimental data, The performance level of steel plate shear wall structure and its quantitative index are put forward, and the seismic fortification criterion based on performance is established, and three groups of beam-shell model and tie bar model of steel plate shear wall structure with different height are analyzed by push-over analysis. The rationality of the proposed index is verified. The method of seismic design in China and its shortcomings are analyzed, and the core goal of seismic fortification is defined as medium-earthquake fortification. The Pushover analysis and IDA incremental dynamic analysis of six sets of examples with different height and span are carried out. The seismic force adjustment coefficients of structures with different performance indexes are obtained. Using the seismic force adjustment coefficients, a performance-based design method based on moderate earthquakes is proposed. Through analysis, it is concluded that steel plate shear wall structure has higher super strength coefficient R 惟, and the structure super strength is the most important part of seismic force adjustment coefficient. Through the quasi-static test of three frame-steel plate shear wall structures, The seismic performance indexes such as stress mechanism, deformation and failure mode, ductility and energy dissipation capacity of the structure are investigated. Based on the previous research results, two steel frame-ribbed steel plate shear wall structures are redesigned, and the experimental and finite element analysis are carried out. The previous research results are verified, and the foundation for further research and application is provided. Through the dynamic time history analysis of three groups of examples, the failure patterns and displacement indexes of structures under various levels of earthquakes are investigated. The types of steel plate shear wall structure braces are discussed. The steel plate shear wall structure is generally bending or bending shear instability. The stiffness and strength requirements of different instability classes of external frames are different. Using the ratio of flexural and shear bearing capacity of support frame stiffness representative layer, the method of judging the type of bracing frame is given. At the same time, combined with the results of numerical examples, The requirements of shear force distribution between bending and bending shear braces and external frames are put forward. Finally, the problems related to the structural design of steel plate shear walls are studied, and the side columns of steel plate shear walls need to meet the requirements of super strength of wall materials. In order to give full play to the material properties of wall panels, provide reliable anchoring for wall panels, and put forward some relevant suggestions for the design of beams and panels, the advantages and disadvantages of the existing simplified models are discussed and the TSM model is suggested for elastic design. When the elastic-plastic analysis of the structure is needed, the SM model is chosen, and the performance-based seismic design method of the steel plate shear wall structure is explained by two examples.
【學(xué)位授予單位】：西安建筑科技大學(xué)
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TU391;TU352.11

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