【摘要】：高強(qiáng)鋼組合K型偏心支撐框架是一種抗震性能良好、經(jīng)濟(jì)效益較高的抗震結(jié)構(gòu)體系，適用于高烈度抗震設(shè)防地區(qū)的多、高層建筑。本文采用動(dòng)力彈塑性分析方法，對(duì)不同強(qiáng)度鋼材組合、不同耗能梁段長(zhǎng)度的K型偏心支撐框架結(jié)構(gòu)進(jìn)行了抗震性能的有限元分析，并提出了相關(guān)設(shè)計(jì)建議。 論文采用ETABS軟件設(shè)計(jì)了若干個(gè)不同強(qiáng)度鋼材組合、不同耗能梁段長(zhǎng)度的K型偏心支撐框架結(jié)構(gòu)作為有限元分析的原型結(jié)構(gòu)。然后，建立了實(shí)體單元和梁?jiǎn)卧嘟Y(jié)合的ABAQUS非線性有限元模型。材料本構(gòu)選用考慮包辛格效應(yīng)的雙線性隨動(dòng)強(qiáng)化模型，同時(shí)考慮材料和幾何的雙重非線性。并參考已有試驗(yàn)，驗(yàn)證了有限元模型的有效性。在此基礎(chǔ)上，選取三條合適的地震波對(duì)結(jié)構(gòu)進(jìn)行從7度多遇到9度罕遇共8種工況的時(shí)程分析，對(duì)比分析各結(jié)構(gòu)的位移響應(yīng)、剪力分配、內(nèi)力響應(yīng)及應(yīng)力分布，研究了不同強(qiáng)度鋼材組合和不同耗能梁段長(zhǎng)度對(duì)K型偏心支撐框架結(jié)構(gòu)動(dòng)力彈塑性性能的影響。 最后，基于本文研究成果，得到以下結(jié)論：高強(qiáng)鋼組合K型偏心支撐框架結(jié)構(gòu)抗震性能略差于相同設(shè)計(jì)條件下的普通鋼偏心支撐結(jié)構(gòu)；Q345和Q460鋼材組合的K型偏心支撐框架結(jié)構(gòu)適宜于推廣使用；建議適當(dāng)減小高強(qiáng)鋼組合K型偏心支撐框架結(jié)構(gòu)的框架剪力調(diào)整系數(shù)；剪切屈服型高強(qiáng)鋼組合K型偏心支撐框架結(jié)構(gòu)的抗震性能優(yōu)于彎曲屈服型結(jié)構(gòu)；耗能梁段相對(duì)長(zhǎng)度在（1.0-1.6）之間時(shí)，高強(qiáng)鋼組合K型偏心支撐框架結(jié)構(gòu)抗震性能較好。
[Abstract]:High-strength steel composite K-type eccentric braced frame is a kind of seismic structure system with good seismic performance and high economic benefit. It is suitable for many high-rise buildings in high intensity seismic fortification areas. In this paper, the dynamic elastic-plastic analysis method is used to analyze the seismic behavior of K-type eccentrically braced frame structures with different strength and different energy dissipation beam length, and the relevant design suggestions are put forward. In this paper, a number of K-type eccentrically braced frame structures with different strength and different energy dissipation beam length are designed by using ETABS software as the prototype structure for finite element analysis. Then, the ABAQUS nonlinear finite element model combining solid element with beam element is established. The material constitutive model takes into account the Bauschinger effect and the double nonlinearity of material and geometry. The validity of the finite element model is verified by referring to the existing experiments. On the basis of this, three suitable seismic waves are selected to analyze the time history of the structure under 8 working conditions from 7 to 9 degrees, and the displacement response, shear force distribution, internal force response and stress distribution of each structure are compared and analyzed. The influence of different strength steel combination and different energy dissipation beam length on dynamic elastoplastic properties of K type eccentrically braced frame structure is studied. Finally, based on the research results of this paper, the following conclusions are obtained: the seismic performance of high strength steel composite K eccentrically braced frame structure is slightly worse than that of common steel eccentrically braced structure under the same design conditions; The K-type eccentrically braced frame structure combined with Q345 and Q460 steel is suitable to be popularized and it is suggested that the shear adjustment coefficient of K-type eccentrically braced frame structure with high strength steel should be reduced appropriately. The seismic behavior of shear yield steel composite K eccentrically braced frame structure is better than that of flexural yield type frame structure, and when the relative length of energy dissipation beam is between 1.0-1.6, the seismic performance of high strength steel composite K eccentric braced frame structure is better.
【學(xué)位授予單位】：西安建筑科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TU391;TU313

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 左詠梅;隨安琦;;D型偏心支撐鋼框架耗能梁段性能研究[J];工程建設(shè)與設(shè)計(jì);2013年09期

2 易方民,高小旺,張維]，

本文編號(hào)：2181541