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A Viscous Damper Arrangement Method Based on Generalized Shear Velocity

A viscous damper, shear rate technology, applied in instruments, special data processing applications, electrical digital data processing, etc., to save computing time, improve design efficiency, and meet development needs.

Active Publication Date: 2016-02-17
TONGJI UNIV ARCHITECTURAL DESIGN INST GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Thirdly, the viscous damper is a speed-dependent energy dissipator, and it is not appropriate to judge the arrangement of the viscous damper by interlayer displacement

Method used

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  • A Viscous Damper Arrangement Method Based on Generalized Shear Velocity
  • A Viscous Damper Arrangement Method Based on Generalized Shear Velocity
  • A Viscous Damper Arrangement Method Based on Generalized Shear Velocity

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Experimental program
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Effect test

Embodiment 1

[0033] Such as figure 1 As shown, a viscous damper layout method based on generalized shear velocity, the method includes the following steps:

[0034] (1) Cells suitable for arranging viscous dampers in the screening structure;

[0035] (2) Analyze the structure by nonlinear time-history method, and calculate the velocity of any two nodes in the grid screened out in step (1), including the horizontal velocity and vertical velocity at each step;

[0036] (3) Calculate the generalized shear velocity at each step of the grid according to the following formula:

[0037] α = Δ U · L - Δ V · H

[0038] In the formula, is the horizontal velocity difference between nodes A and B in the cell, is the vertical velocity difference between nodes A and...

Embodiment 2

[0052] This embodiment adopts a 284-meter super high-rise building with a standard floor height of 4.2m, a total of 68 floors above the ground, and a structural system of steel concrete frame-core tube system.

[0053] The seismic fortification intensity is 7 degrees, the design earthquake group is the second group, and the construction site category is III. Four ring-belt trusses are set up in the structure, which is one of the main anti-lateral force systems. The dynamic elastic-plastic time-history method is used to analyze the structure. The dynamic time-history wave adopts a certain natural wave suitable for the site category of this model, adopts X one-way input, the maximum value of the acceleration time history is set to 220gal, the step size is 0.02s, and the duration is set to for 8s.

[0054] Considering that the arrangement of viscous dampers will usually have an impact on architectural requirements and use functions, the cells selected for this case study are the c...

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Abstract

The invention relates to a viscous damper arranging method based on generalized shear speed. The method includes the steps of firstly, screening cells appropriate for arranging viscous dampers in a structure; secondly, using a nonlinear time-history method or a power elastic-plastic time-history method to analyze the structure, calculating the speed of optional two nodes in each cell screened in the first step, wherein the speed includes the horizontal speed and vertical speed under each step length; thirdly, calculating the generalized shear speed of each cell under each step length; obtaining the absolute average value of the generalized shear speed of all points in each cell so as to obtain the average generalized shear speed of each cell; fourthly, sorting the cells according to the average generalized shear speed; fifthly, sequentially arranging the viscous dampers according to expected damper arranging effect and the generalized shear speed. Compared with the prior art, the method is high in calculation efficiency, good in optimization effect, simple to operate, and the like.

Description

technical field [0001] The invention relates to the technical field of building structures, in particular to a method for arranging viscous dampers based on generalized shear velocity. Background technique [0002] Nowadays, the height of super high-rise buildings in the world is constantly increasing, and the internal structure is becoming more and more complex, which brings great challenges to structural engineers. The problem of seismic design of super high-rise buildings needs to be solved urgently. With the widespread use of energy-dissipating shock-absorbing devices in engineering, viscous dampers are becoming an important development direction in seismic design because of their good energy-dissipating effect, low environmental impact, and long service life. The energy dissipation mechanism of the viscous damper is that when the fluid passes through the gap, a viscous damping force is generated to dissipate the seismic action, provide an additional damping ratio, and r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/98G06F19/00G06F17/50
Inventor 赵昕石涛张鸿玮周瑛占茜
Owner TONGJI UNIV ARCHITECTURAL DESIGN INST GRP CO LTD