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Anti-seismic design method of near-field region structure

A regional structure and seismic design technology, applied in geometric CAD, special data processing applications, CAD numerical modeling, etc., can solve the problems of poor safety of near-field regional structures, and achieve the effect of ensuring safety and urban earthquake safety

Active Publication Date: 2020-09-11
HARBIN INST OF TECH
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the near-field pulse effect is considered only by modifying the seismic design spectrum, so that the collapse reserve of the near-field area is smaller than that of the far-field area structure, resulting in poor safety of the near-field area structure. A method for seismic design of structures in the near-field region

Method used

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specific Embodiment approach 1

[0020] Specific implementation mode one: combine figure 1 This embodiment will be described. The method for seismic design of a structure in a near-field region described in this embodiment is specifically implemented through the following steps:

[0021] Step 1: Design the near-field regional structure model and the far-field regional structural model;

[0022] Using the near-field design spectrum to design several near-field regional structural models, using the far-field design spectrum to design far-field regional structural models with the same number as the near-field regional structural models;

[0023] Step 2: Establish the collapse vulnerability curves of the near-field regional structural model and the far-field regional structural model;

[0024] According to the response characteristics of the near-field regional structural model under different earthquake intensities, the collapse vulnerability curve of the near-field regional structural model is established, an...

specific Embodiment approach 2

[0028] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that in the step 1, the near-field regional structure model and the far-field regional structural model are designed, wherein, the method for designing the near-field regional structural model is: according to The near-field design spectrum designs 4-story, 8-story, and 12-story RC frame structures under the 7-degree fortification situation, and then designs the 4-story, 8-story, and 12-story RC frame structures under the 8-degree fortification situation according to the near-field design spectrum;

[0029] The method for designing the far-field regional structure model is: design 4-story, 8-story, and 12-story RC frame structures under the situation of 7-degree fortification according to the far-field design spectrum, and then design the 4-layer under the situation of 8-degree fortification according to the far-field design spectrum. Layer, 8-layer, 12-layer RC frame structure;

...

specific Embodiment approach 3

[0031] Specific implementation mode three: the difference between this implementation mode and specific implementation mode two is: the specific process of said step two is:

[0032] Select 20 pieces of far-field ground motion data and 20 pieces of near-field pulse-type ground motion data through spectral matching, and use the incremental dynamic analysis method to obtain the response characteristics of the near-field regional structural model and the far-field regional structural model under different ground motion intensities , and according to the obtained response characteristics, the collapse vulnerability curves of the near-field regional structural model and the far-field regional structural model are respectively established.

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Abstract

The invention discloses an anti-seismic design method of a near-field region structure, and belongs to the field of seismic engineering. According to the method, the problem of poor safety of the near-field region structure due to the fact that the collapse reserve of the near-field region is smaller than that of the far-field region structure only by correcting the anti-seismic design spectrum toconsider the near-field pulse effect at present is solved. The invention relates to a near-field area structure anti-seismic design method for realizing collapse reserve equivalence by controlling the basic period of a structure. By adopting the method provided by the invention, the collapse reserve of the near-field region structure under the near-field pulse type earthquake action can be ensured, and the collapse reserve of the near-field area structure is equivalent to the collapse reserve of the far-field area structure under the action of far-field vibration, so that the safety of the near-field area structure is guaranteed, the urban earthquake safety of the near-field area in China is guaranteed, and the construction of earthquake-resistant tough cities is promoted. The method canbe applied to the field of seismic engineering.

Description

technical field [0001] The invention belongs to the field of earthquake engineering, and in particular relates to an anti-seismic design method of a near-field area structure. Background technique [0002] It has become a consensus in the field of earthquake engineering that near-field pulse-type ground motions are more likely to cause serious damage or even collapse of building structures. There are many earthquake faults in my country, and many cities (such as Beijing, Tianjin, Fuzhou, Chengdu, etc.) are located near the faults. Therefore, whether the near-field pulse effect can be reasonably considered in the seismic design of building structures is very important to ensure the earthquake safety of cities in my country. [0003] Because the near-field pulse effect is more likely to cause serious damage or even collapse of the structure, the structure in the near-field region should have a collapse reserve not less than that of the far-field region. The current method only...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/13G06F111/10
CPCG06F30/13G06F2111/10
Inventor 温卫平翟长海籍多发刘惠华
Owner HARBIN INST OF TECH
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