| Linked column steel frame structure consists of moment frames and closely spaced dual columns interconnected with links.The links are first yield to dissipate seismic energy following a design level earthquake to avoid or delay the damage of the main structure.Compared with eccentrically braced frame,it has bigger interpace.For the more,It has few studies on dynamic response analysis of linked column steel frame system at home and abroad.It has no completely clear at the range of rapid recovery of structural function and it has not put forward of the range of the replaceable interstory drift of the links of linked column steel frame system.There are few studies on structural influencing coefficient and deflection amplification factor.In view of this,this text analyzes dynamic response analysis of linked column steel frame system 、 the range of the replaceable interstory drift of the links and structural influencing coefficient and deflection amplification factor.(1)The dynamic analysis towards linked column steel frame structure shows that:under three harzard levels,LCF’s link rotation 、story drift increases with the increase of zhe span of the structure,but Story shear distribution has no relationship with zhe span of the structure.under three harzard levels,LCF’s link rotation has no relationship with zhe story height,story shear distribution increases with the increase of story height.under design and rare occurrence earthquake,LCF’s story drift increases with the increase of story height.under three harzard levels,LCF’s link rotation、story drift 、story shear distribution increases with the increase of story number.The stronger the earthquake effect,story shear distribution more uniform.(2)In order to make sure the reasonable range for rapidly recovering structure function by replacing links,we analyze the impact of rapid recovery performance by different high-span ratios and the number of layers and grades of steel of the linked column teel frame structure.It has no significant relationship between the range of the replaceable interstory drift of the links and high-span ratios,the range of the replaceable interstory drift increases with the increase of the number of layers and grades of steel.(3)Using the method of improved capaticy spectrum to make sure structural influencing coefficient and deflection amplification factor of linked column steel frame structure.It has few influence between high-span ratios and structural influencing coefficient,and the more layer number the grater structural influencing coefficient.It has few influence between story hight and deflection amplification factor,deflection amplification factor decreases with the increase of span and the more layer number the smaller structural influencing coefficient. |
