高层磷石膏墙体网格式框架结构受力性能分析
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摘要
高层磷石膏墙体网格式框架结构在水平荷载下,内力不以剪力为主,整体弯矩起主要控制作用。采用有限元软件PKPM,以层数为变化参数,研究水平及竖向荷载作用下整体弯矩对结构受力性能的影响。计算结果表明:整体弯曲对底层柱底倾覆弯矩影响较大,轴力基本呈线性关系增加,而对倾覆剪力的影响较小。其底部变形呈弯曲型,上部变形呈剪切型。边框架柱截面面积相等时,矩形框架柱承担轴力和剪力分别比L形大2%和15%;边框架柱截面惯性矩相等时,矩形框架柱承担轴力和剪力分别比L形大9%和18%。
Overall bending moment has played an important role in the performance of high grid structure with phosphogypsum as the wall under lateral loads,but the shear forces.Utilizing structural analysis program PKPM,and using the floors as parameter,it is conducted the performance analysis of structure under the horizontal and vertical loads.The results show that overall bending moment has a great impact on the overturning moment of the bottom columns,the axial force increases by a linear relationship,but small impact on the overturning shear force.Deformation of the bottom is curved and that of the upper part is shear.Rectangular frame columns bear the axial force and shear force,that is respectively increased by about 2% and 15% as compared with L-shaped frame column when the sectional area of side frame columns is equal.Rectangular frame columns bear the axial force and shear force,that is respectively increased by about 9% and 18% as compared with L-shaped frame column when the moment of inertia of side frame columns is equal.
Overall bending moment has played an important role in the performance of high grid structure with phosphogypsum as the wall under lateral loads,but the shear forces.Utilizing structural analysis program PKPM,and using the floors as parameter,it is conducted the performance analysis of structure under the horizontal and vertical loads.The results show that overall bending moment has a great impact on the overturning moment of the bottom columns,the axial force increases by a linear relationship,but small impact on the overturning shear force.Deformation of the bottom is curved and that of the upper part is shear.Rectangular frame columns bear the axial force and shear force,that is respectively increased by about 2% and 15% as compared with L-shaped frame column when the sectional area of side frame columns is equal.Rectangular frame columns bear the axial force and shear force,that is respectively increased by about 9% and 18% as compared with L-shaped frame column when the moment of inertia of side frame columns is equal.
引文
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[2]马克俭,高国富,张华刚,等.磷石膏在大开间灵活划分居室的住宅建筑中的综合应用可行性研究报告[R].贵阳:贵州大学空间结构研究中心,2007.
[3]杨沛浩.磷石膏的综合利用[J].中国资源综合利用,2009,27(1):13-15.
[4]沈蒲生.高层建筑结构设计[M].北京:中国建筑工业出版社,2002:118-150.
[5]方鄂华.多层及高层建筑结构设计[M].北京:地震出版社,2008:51-57.
[6]包世华,方鄂华.高层建筑结构设计[M].北京:清华大学出版社,1985:136-154.
[7]GB50011—2010建筑抗震设计规范[S].
[8]JGJ3—2002高层建筑混凝土结构技术规程[S].
[9]GB50010—2002混凝土结构设计规范[S].
[10]GB50009—2001建筑结构荷载规范[S].
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