| 1. | This model is used to describe the bending / torsion coupled vibrations of a rotor and an elastic stator due to the contact
应用该模型，重点研究了动、静碰摩引起的转子弯曲和扭转非线性耦合振动。 |
| 2. | The lateral - torsion coupling seismic response of the uniaxial - eccentricity base - isolated structure is then analyzed , and the seismic responses of several base - isolated structures with various eccentricity ratios are discussed
结果表明：在结构设计中应合理调整隔震结构上部结构和隔震层的偏心率。 |
| 3. | But the translation - and - torsion coupling vibration of structure is a three - dimensional problem , and the experimentation is limited to the size and quantity , so the computer simulation becomes the main means to study the torsion effect
由于结构地震反应的平-扭耦联振动是三维空间动力反应问题，结构试验研究受到试验规模和数量的限制，因而主要是依靠结构动力分析手段对其进行计算机模拟分析研究。 |
| 4. | But the translation - and - torsion coupling vibration of structure is a three - dimensional problem , and the experimentation is limited to the size and quantity , so the computer simulation becomes the main method to study the torsion effect
由于结构地震反应的平-扭耦联振动是三维空间动力反应问题，结构试验研究受到试验规模和数量的限制，因而主要是依靠结构动力分析手段对其进行计算机模拟分析研究。 |
| 5. | Furthermore , this paper develops a practically seismic design method of the middle - rise or low - rise symmetric structures with unsymmetrically viscous dampers on the basis of the theoretical analysis and provides corresponding formulas to obtain the translation - torsion coupling seismic response
此外，在理论分析的基础上进一步提出了中低层对称结构不对称安装粘滞消能器时的实用抗震设计方法，推导出了相应的平扭耦合地震作用的计算公式。 |
| 6. | Overcoming the inability of forcing decoupling method ( fd ) , this paper presents a new method - to - step - additional - stiffness method ( tsas ) to calculate the translation - torsion coupling seismic response of tile symmetric structures with asymmetrically viscous dampers
摘要克服强行解耦法( fd )不能求解对称结构由于不对称安装粘滞消能器而产生平扭耦合地震作用的不足，提出了一种求解该种情况下的平扭耦合地震反应的新方法两步附加刚度法( tsas ) 。 |
| 7. | In the end , the paper sums up the calculation results , and reviews the whole performance of this type of structures under earthquake actions . except that , it reviews the structures " security about the translation - and - torsion coupling response under the fortification and rare seismic actions , and gives a primary evaluation ; it also discusses some characters of the structures " three - dimensional nonlinear response of torsion under earthquakes
通过对分析结果的归纳整理，考察了按照新规范设计的这一类不规则框架结构的总体抗震性能；验证了结构各自在中震和大震作用下抗扭设计方法和措施的安全性，对结构在平?扭耦联振动下能否达到“中震可修” 、 “大震不倒”的抗震设防目标进行了初步评价；同时也对这一类不规则钢筋混凝土框架结构在地震作用下的三维非线性动力扭转反应规律作了初步的探讨。 |
| 8. | In this paper , three - tower building with name of oriental tunes square in xiamen is analyzed by the international current program sap2000 , considering seismic action in two directions . by structural modeling and calculation , the characteristic of vibration of the multi - tower structure is analyzed , the influences of the rigid ratio of the enlarged base to top tower and translation - torsion coupled effects among several towers are investigated , the inter - story displacement , displacement of the top tower and deformation of tower ' s base floor in x and y major orientation under earthquake action are contrasted with those under wind load . at last , the distributing characteristics of stress of transfer plate and of the normal , shearing stress of mostly vertical elements under earthquake action are studied
本文以具有3个塔楼的厦门东方时代广场为分析对象，采用国际通用有限元分析软件sap2000进行结构建模和分析，考虑双向地震动输入，研究结构的振动特性，分析底盘与塔楼刚度比对结构的影响以及多塔之间的扭转效应和平扭耦联作用，对比风荷载和地震作用下塔楼在两个结构主轴方向的层间位移、顶点位移以及塔楼底层的变形，分析地震作用下转换层楼板的应力分布特点及主要竖向构件的正应力和剪应力分布特点。 |
| 9. | The ratio of story shear rigidity as well as the equivalent lateral rigidity ratio of story above the transfer story to the story under the transfer story should be designed properly to avoid the transfer story becoming weak story , thus the shear walls and the columns in the large base will not yield before the elements above the transfer story ; ( 2 ) the translation - torsion coupled effects and the vibration in the plane should be considered in analysis of structure with large base and muti - towers
转换层的设计除应控制层剪切刚度比外，还应控制转换层上部与下部结构的等效侧向刚度比以避免薄弱层出现在框支层，保证地震作用下落地剪力墙和框支柱不先于转换层上部结构进入屈服状态；大底盘多塔楼结构的分析必须考虑平扭耦联振动和楼板平面内振动的影响。 |
| 10. | From above analysis , the thesis gets conclusions as following : ( 1 ) the frequencies of multi - tower building are so dense and the coupling in each mode is so evident that the cqc method instead of srss should be used to calculate the seismic action effect ; ( 2 ) torsion effects is distinct between the modes of asymmetry multi - tower structure and it is necessary to take translation - torsion coupling into account ; ( 3 ) the effect of the enlarged base rigid on the seismic properties is very big , the rigid ratio of the enlarged base to towers in asymmetry multi - tower structure should be designed in a proper range ; ( 4 ) the distribution of plane rigid is asymmetry because of the asymmetry layout of towers . the torsion effects of structure not only result in large torsion internal force in vertical element resisting lateral displacement , but also make large influences on the stress of transfer plate and near floors , thus it is necessary to strengthen those floors
通过上述分析，得出以下主要结论：多塔楼结构存在频率密集现象，各振型间耦联效应明显，地震作用计算应采用cqc组合原则而不能简单地采用srss组合原则；非对称多塔结构的振型中，扭转作用明显，平扭耦联效应值得考虑；裙楼刚度对整体结构的抗震性能影响很大，非对称多塔结构宜控制裙楼与塔楼刚度比在适宜的范围；非对称多塔易导致平面刚度分布不均匀，结构扭转效应不仅在竖向抗侧构件中引起较大的扭转内力，对转换层楼板应力有较大的影响，且延续至相邻楼层，对相应楼层均应采取相应的加强措施。 |
