考虑楼板变形带转换层高层建筑结构简化计算
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摘要
带转换层高层建筑属于复杂结构体系,其楼板变形问题较为突出,考虑楼板变形对带转换层高层建筑结构进行的地震反应简化计算研究非常必要。首先将带转换层的整体结构以转换层为界划分为若干个子结构部分;其次,对每个子结构内部的各类型竖向构件以轴线为单位运用超单元法进行简化等效,对其楼板和转换梁等水平构件则视为深梁,对所有构件考虑其类型、剪切变形、弯曲变形和轴向变形等因素的影响建立其单元刚度矩阵;最后,通过坐标变换和自由度缩减形成各子结构整体刚度矩阵,根据依次放松约束节点的计算思路完成整体结构的动力计算。算例结果表明,该简化计算法计算量小精度较高。
Tall building structures with transfer stories belong to the complex structural systems,in which the floor deformations is a remarkable problem of its seismic response.It is significant to analyze the simplified calculation for seismic action of tall building structures with transfer stories considering floor deformations.The whole structure is divided into several substructures according to the transfer stories firstly.Furthermore,the various vertical elements of every substructure based on the axis are analyzed by the super element method,and its horizontal floor and transfer beams are regarded as deep beams.The influence of the element type,shear deformation,bending deformation and axial deformation is considered fully and the element stiffness matrix of each element is formulated.The global stiffness matrix of every substructure is formed by the coordinate transformation and freedom degree reduction on the basis of the relax-constraint-order substructure method,which can accomplish the dynamic calculation of the whole structure easily.Finally,it is shown that the suggested method has features of better performance and low computational complexity for an example.
Tall building structures with transfer stories belong to the complex structural systems,in which the floor deformations is a remarkable problem of its seismic response.It is significant to analyze the simplified calculation for seismic action of tall building structures with transfer stories considering floor deformations.The whole structure is divided into several substructures according to the transfer stories firstly.Furthermore,the various vertical elements of every substructure based on the axis are analyzed by the super element method,and its horizontal floor and transfer beams are regarded as deep beams.The influence of the element type,shear deformation,bending deformation and axial deformation is considered fully and the element stiffness matrix of each element is formulated.The global stiffness matrix of every substructure is formed by the coordinate transformation and freedom degree reduction on the basis of the relax-constraint-order substructure method,which can accomplish the dynamic calculation of the whole structure easily.Finally,it is shown that the suggested method has features of better performance and low computational complexity for an example.
引文
[1]韩小雷,郑宜,杨坤,等.基于能力设计原理的罕遇地震作用下转换层结构设计研究[J].地震工程与工程振动,2006,26(5):95-101.
[2]周云,高向宇,阴毅,等.中海名都高层住宅结构模型模拟地震振动台试验研究[J].地震工程与工程振动,2006,26(4):101-107.
[3]吴波,沈朝勇,周福霖,等.错位转换层位置对高层建筑抗震性能影响的研究[J].地震工程与工程振动,2006,26(1):105-110.
[4]GB 50011-2001建筑抗震设计规范[S].北京:中国建筑工业出版社,2001:141-159.
[5]张同亿,李从林,吴敏哲.框支剪力墙结构考虑楼板变形计算的超元法[J].工业建筑,2001,31(8):33-35.
[6]叶艳霞,梁兴文,李青宁,等.底部大空间上部弱楼板高层结构空间有限元动力分析[J].工业建筑,2003,33(3):27,32-34.
[7]叶艳霞.框支分区剪力墙结构抗震性能及空间精细分析和简化分析方法研究[D].西安:西安建筑科技大学,2003.
[8]沈蒲生.结构分析的计算机方法[M].长沙:湖南科学技术出版社,1994.
[9]李从林,张同亿.高层建筑结构考虑楼板变形计算的超元法[J].建筑结构,2000,21(2):17-18.
[10]唐兴荣.特殊和复杂高层建筑结构设计[M].北京:机械工业出版社,2006:96-112.
[11]汪梦甫,沈蒲生.建筑结构动力分析的子结构法[J].湖南大学学报,1994,21(2):27,32-34.
[12]徐培福,傅学怡,王翠坤,等.复杂高层建筑结构设计[M].北京:中国建筑工业出版社,2005:187-275.
[2]周云,高向宇,阴毅,等.中海名都高层住宅结构模型模拟地震振动台试验研究[J].地震工程与工程振动,2006,26(4):101-107.
[3]吴波,沈朝勇,周福霖,等.错位转换层位置对高层建筑抗震性能影响的研究[J].地震工程与工程振动,2006,26(1):105-110.
[4]GB 50011-2001建筑抗震设计规范[S].北京:中国建筑工业出版社,2001:141-159.
[5]张同亿,李从林,吴敏哲.框支剪力墙结构考虑楼板变形计算的超元法[J].工业建筑,2001,31(8):33-35.
[6]叶艳霞,梁兴文,李青宁,等.底部大空间上部弱楼板高层结构空间有限元动力分析[J].工业建筑,2003,33(3):27,32-34.
[7]叶艳霞.框支分区剪力墙结构抗震性能及空间精细分析和简化分析方法研究[D].西安:西安建筑科技大学,2003.
[8]沈蒲生.结构分析的计算机方法[M].长沙:湖南科学技术出版社,1994.
[9]李从林,张同亿.高层建筑结构考虑楼板变形计算的超元法[J].建筑结构,2000,21(2):17-18.
[10]唐兴荣.特殊和复杂高层建筑结构设计[M].北京:机械工业出版社,2006:96-112.
[11]汪梦甫,沈蒲生.建筑结构动力分析的子结构法[J].湖南大学学报,1994,21(2):27,32-34.
[12]徐培福,傅学怡,王翠坤,等.复杂高层建筑结构设计[M].北京:中国建筑工业出版社,2005:187-275.
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