大底盘层间隔震技术的研究
发布时间：2018-10-08 21:18
【摘要】：隔震结构是指在建筑物上部结构与基础之间设置隔震层,以延长整个结构体系的自振周期、增大阻尼、减少输入到上部结构的地震作用,达到预期的抗震要求。大底盘层间隔震技术是隔震技术的发展与革新,即将隔震技术运用于大底盘塔式结构中,且设置隔震装置的隔震层位于大底盘与塔式结构之间或是塔式结构的中间层层顶。大底盘层间隔震技术在已有结构增层加固工程以及一些不宜采用基础隔震的特殊结构工程中的特有优势,近年来受到人们的广泛关注,目前己开始了工程方面的运用。 本文以沈阳丽水新城项目为载体进行了大底盘层间隔震结构的理论分析。探讨了大底盘层间隔震结构动力分析模型的建立,并根据结构力学的知识对应的建立了结构的动力运动方程。根据隔震层位置设置的不同,提出两种简化的模型,并对应建立运动方程。将理论分析与数值模拟相结合,模拟建立18层大底盘单塔剪力墙结构(大底盘3层,塔式结构15层),运用软件PKPM与ETABS进行模拟分析,对非隔震结构进行分析,得到结构的周期、质量等,将两种结果进行误差分析,证实结构建立的正确性。运用ETABS对隔震结构进行模拟分析,与非隔震结构进行对比得出减震系数,具体的研究内容与结论如下： 将隔震层设置于大底盘与上部塔式结构中间作为基本隔震结构,计算其在埃尔森特波、兰州波1及人工波的作用下的周期、剪力、位移及减震系数等。将减震系数作为结构的减震效果的评估标准对结构的减震效果进行说明。 增大隔震层的阻尼,计算其在在埃尔森特波作用下的减震系数,与基本隔震结构进行对比分析,说明了隔震层阻尼对减震效果的影响。 模拟计算隔震层位于不同位置时在地震波的作用下的减震系数,将所得结果进行分析,得出隔震层设置位置对隔震结构的减震系数的影响,优化设计。 最后总结了本文的研究成果,得到了相关结论,并提出了大底盘层间隔震结构需要进一步研究的主要内容。
[Abstract]:Isolation structure refers to the isolation layer between the superstructure and the foundation of the building in order to prolong the natural vibration period of the whole structure system, increase the damping, reduce the earthquake action of input to the superstructure, and meet the expected seismic requirements. The technology of isolation between layers of large chassis is the development and innovation of isolation technology. The isolation technology is applied to the tower structure of large chassis, and the isolation layer of isolation device is located between the large chassis and tower structure or the middle layer of tower structure. In recent years, the special advantages of the isolation technology between the large chassis layers in the existing structural strengthening projects and some special structural projects which are not suitable for base isolation have been widely concerned by people. At present, the application of this technology has begun to be applied in the engineering field. Based on the Lishui New Town Project in Shenyang, this paper makes a theoretical analysis on the structure of isolation between large chassis layers. This paper discusses the establishment of dynamic analysis model of large base layer isolation structure, and establishes the dynamic motion equation of the structure according to the knowledge of structural mechanics. According to the different location of isolation layer, two simplified models are proposed and the motion equation is established. By combining theoretical analysis with numerical simulation, the 18-story single-tower shear wall structure with large chassis (large chassis 3 stories, tower structure 15 stories) is simulated and analyzed by using software PKPM and ETABS to analyze the non-isolated structure, and the period of the structure is obtained. The error analysis of the two results is carried out to verify the correctness of the structure. ETABS is used to simulate and analyze the isolated structure, and compared with the non-isolated structure, the damping coefficient is obtained. The specific research contents and conclusions are as follows: the isolation layer is set between the large chassis and the upper tower structure as the basic isolation structure, and its period and shear force under the action of Elson wave, Lanzhou wave 1 and artificial wave are calculated. Displacement and damping coefficient, etc. The seismic absorption coefficient is used as the evaluation standard of the structure's seismic absorption effect. Increasing the damping of the isolation layer and calculating the damping coefficient of the isolation layer under the action of Elson special wave are compared with the basic isolated structure, and the effect of the damping of the isolation layer on the damping effect is explained. The damping coefficient of isolation layer under the action of seismic wave is simulated and calculated. The results obtained are analyzed and the influence of the location of isolation layer on the damping coefficient of isolated structure is obtained and the optimum design is obtained. Finally, the research results of this paper are summarized, and the relevant conclusions are obtained, and the main contents of further research on the large base layer isolation structure are put forward.
【学位授予单位】：沈阳建筑大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU352.12
[Abstract]:Isolation structure refers to the isolation layer between the superstructure and the foundation of the building in order to prolong the natural vibration period of the whole structure system, increase the damping, reduce the earthquake action of input to the superstructure, and meet the expected seismic requirements. The technology of isolation between layers of large chassis is the development and innovation of isolation technology. The isolation technology is applied to the tower structure of large chassis, and the isolation layer of isolation device is located between the large chassis and tower structure or the middle layer of tower structure. In recent years, the special advantages of the isolation technology between the large chassis layers in the existing structural strengthening projects and some special structural projects which are not suitable for base isolation have been widely concerned by people. At present, the application of this technology has begun to be applied in the engineering field. Based on the Lishui New Town Project in Shenyang, this paper makes a theoretical analysis on the structure of isolation between large chassis layers. This paper discusses the establishment of dynamic analysis model of large base layer isolation structure, and establishes the dynamic motion equation of the structure according to the knowledge of structural mechanics. According to the different location of isolation layer, two simplified models are proposed and the motion equation is established. By combining theoretical analysis with numerical simulation, the 18-story single-tower shear wall structure with large chassis (large chassis 3 stories, tower structure 15 stories) is simulated and analyzed by using software PKPM and ETABS to analyze the non-isolated structure, and the period of the structure is obtained. The error analysis of the two results is carried out to verify the correctness of the structure. ETABS is used to simulate and analyze the isolated structure, and compared with the non-isolated structure, the damping coefficient is obtained. The specific research contents and conclusions are as follows: the isolation layer is set between the large chassis and the upper tower structure as the basic isolation structure, and its period and shear force under the action of Elson wave, Lanzhou wave 1 and artificial wave are calculated. Displacement and damping coefficient, etc. The seismic absorption coefficient is used as the evaluation standard of the structure's seismic absorption effect. Increasing the damping of the isolation layer and calculating the damping coefficient of the isolation layer under the action of Elson special wave are compared with the basic isolated structure, and the effect of the damping of the isolation layer on the damping effect is explained. The damping coefficient of isolation layer under the action of seismic wave is simulated and calculated. The results obtained are analyzed and the influence of the location of isolation layer on the damping coefficient of isolated structure is obtained and the optimum design is obtained. Finally, the research results of this paper are summarized, and the relevant conclusions are obtained, and the main contents of further research on the large base layer isolation structure are put forward.
【学位授予单位】：沈阳建筑大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU352.12
【相似文献】
相关期刊论文 前10条
1 同君;华中科技大学“建筑隔震”技术为房屋提供保险[J];中国房地信息;2001年07期
2 陈少敏;防震减灾中心楼完成隔震技术设计方案论证[J];福建地震;2002年04期
3 黄永林,张雪亮,王优龙;《石油浮放设备隔震技术标准》的编制与应用[J];工程抗震;2002年03期
4 陈钶,李新;日本东京清澄白河车站广场工程隔震技术的应用[J];铁道建筑技术;2002年05期
5 吴兵,冯沛芸;中国隔震技术浅析[J];深圳大学学报;2003年02期
6 王燕;隔震技术及其在核电站中的应用[J];河北建筑工程学院学报;2004年01期
7 葛鹏;我国住宅中隔震技术的应用[J];建筑技术;2005年07期
8 马卫华,郝婷s，
本文编号：2258297
本文链接：https://www.wllwen.com/kejilunwen/sgjslw/2258297.html
