水平分缝双连梁（Horizontal parting with double beam）.docVIP

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水平分缝双连梁（Horizontal parting with double beam）.doc

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水平分缝双连梁（Horizontal parting with double beam）

水平分缝双连梁（Horizontal parting with double beam） Double beam level parting design suggestions HiStruct Generally, the double coupling beams can be divided into two kinds: one is a small coupling beam with high cross height, the other is a horizontal seam with double coupling beams; the other is that the middle part is relatively large, forming a horizontal opening, and the height usually reaches about 300-600. The design of these two pairs of coupling beams should be distinguished from their similarities and differences. Provide suggestions for the design of horizontal parting with double beam HiStruct, for friends reference. First of all, why should the parting? In the seismic design of 9.2.2.5, the coupling of the core tube should be improved by configuring the cross bracing, setting the horizontal joint or reducing the width to width ratio of the beam section to improve the ductility of the coupling beam. Relatively small cross high beams, the joint can also span even larger to shallow beam normal, thereby increasing the shear span ratio, improving the ductility, but also can be used as a solution to the application of super beam reinforcement; but on the other hand, this approach also correspondingly reduces the stiffness of the beam, therefore for the design of stiffness under control, special consideration should be given to. Secondly, calculation of double beam joints equivalent to For general ETABS finite element program, the analysis can be built in the model of double coupling beams, and for PKPM plane to simplify the procedure by the equivalent method, the equivalent methods are commonly used: A, anti B, anti shear area; bending stiffness; C, while shear area and etc. bending stiffness; D, considering effect of shearing stiffness. These methods are based on the simple superposition method, but in fact it is not accurate, and can not simulate the role of the double coupling beam. HiStruct recommended the use of equivalent lateral stiffness method, namely Zhu B