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Near-fault aseismic design spectrum correcting method based on China seismic code

A technology for seismic design and specification, applied in computing, special data processing applications, instruments, etc., can solve problems such as insufficient consideration of near-fault effects, and achieve an effect that is easy to accept and use

Active Publication Date: 2018-07-06
HARBIN INST OF TECH
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of insufficient consideration of the near-fault effect in the seismic design spectrum in my country's current "Code for Seismic Design of Buildings" (GB50011-2010), and then proposes a method of considering the near-fault effect on the basis of the standard seismic design spectrum Correction, a method for revising the seismic design spectrum of near-faults based on the Chinese seismic code is given

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  • Near-fault aseismic design spectrum correcting method based on China seismic code
  • Near-fault aseismic design spectrum correcting method based on China seismic code
  • Near-fault aseismic design spectrum correcting method based on China seismic code

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specific Embodiment approach 1

[0024] Specific implementation mode one, the steps are as follows:

[0025] Step 1. According to the fortification intensity, earthquake grouping, and site type information of the site where the building structure is located, use the "Code for Seismic Design of Buildings" (GB50011-2010) to determine the design spectrum control parameters corresponding to frequent earthquakes: amplitude, characteristic period T g . Assuming that the fortification intensity is 6, 7, 8 and 9 degrees, the seismic grouping and site type take all possible combinations given in the "Code for Seismic Design of Buildings" (GB50011-2010) (seismic grouping is 3 groups, site type There are 5 categories, a total of 15 situations after combination). Use the design spectrum formula in the seismic code to draw the seismic design spectrum, which is the uncorrected code design spectrum;

[0026] Step 2. In the case of designing the spectrum with a guarantee rate of 50%, according to the fortification intensit...

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Abstract

The invention discloses a near-fault aseismic design spectrum correcting method based on the China seismic code, and relates to the field of building structure aseismic design. In order to solve the problem that an aseismic design spectrum in the China current 'code for seismic design of building' (GB50011-2010) does not consider the near-fault effect insufficiently, correction considering the near-fault effect on the basis of the code for the aseismic design spectrum is put forward. Code aseismic design spectrum control parameters corresponding to frequent earthquakes are corrected; the obtained code design spectrum amplitude is multiplied by the spectrum amplitude amplification coefficient, the obtained characteristic period Tg of the code design spectrum is adjusted to a characteristicperiod Tg limit; adjusting coefficients for the 50% assurance rate and the 84% assurance rate are put forward, and adjustment is performed on the basis of the seismic code design spectrum. The application range is the aseismic design of the near-fault region building structure.

Description

technical field [0001] The invention relates to the field of seismic design of building structures. Background technique [0002] Earthquake is one of the sudden natural disasters that threaten the safety of human life and property. In-depth research on the causes of structural damage caused by earthquakes and the improvement of seismic design theory are one of the hot topics in the development of structural seismic design. The research on the characteristics of near-fault ground motions shows that such ground motions present more complex characteristics than general ground motions, and one of the main features is the obvious pulse in the velocity time history, which is also found to be the cause of near-fault regions. major cause of structural damage. The seismic design method based on the response spectrum theory is currently the method commonly used in the seismic design of structures in various countries. Therefore, whether the seismic design spectrum is reasonable or n...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/13
Inventor 李爽张艳刘向阳翟长海
Owner HARBIN INST OF TECH
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