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Improved Kalman filter-based super high-rise building wind load inverse analysis method

A Kalman filter, wind load technology, applied in the testing of machine/structural components, measurement of ultrasonic/sonic/infrasonic waves, measurement devices, etc., can solve problems such as limited inversion analysis

Inactive Publication Date: 2016-04-06
WUHAN UNIV OF TECH
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Problems solved by technology

However, at present, there are few studies on the inverse analysis of wind loads on building structures, and the inverse analysis of wind loads on high-rise buildings is even more limited, so it is necessary to strengthen research work in this area

Method used

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  • Improved Kalman filter-based super high-rise building wind load inverse analysis method
  • Improved Kalman filter-based super high-rise building wind load inverse analysis method
  • Improved Kalman filter-based super high-rise building wind load inverse analysis method

Examples

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Embodiment 1

[0217] Example 1: Based on the wind tunnel test of a high-rise building in the center of Guangzhou, wind load back analysis

[0218] A high-rise building located in the center of Guangzhou has a total of 63 floors, of which 58 are above the ground, and the roof elevation is 256.9m. The building is square in plan, with a size of 48.00m×48.00m and a maximum aspect ratio of 5.20, which is a wind-sensitive structure.

[0219] The building wind tunnel test was carried out in the boundary layer wind tunnel of Hunan University. The high-speed test section of the wind tunnel is a rectangle of 3.0m×2.5m (width×height), and the wind speed of this test section is adjustable within 1.0-58.0m / s.

[0220] Since the site where the building is located is Class C landform (wind profile index is 0.22) classified by the national code, during the test, the specified wind profile (such as figure 1 ). The wind tunnel test takes the main building as the center, simulates the main surrounding buildin...

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Abstract

The invention discloses an improved Kalman filter-based super high-rise building wind load inverse analysis method. According to the method of the invention, a limited test wind-induced response of a floor is used for recognizing a structure dynamic wind load, the method belongs to the field of building structure wind load inverse analysis, a discrete system state equation is built based on a dynamic differential equation in modal space, the response and the load are estimated based on improved Kalman filter, and thus a wind load inversion technology is improved. The method of the invention can solve the problem of insufficient super high-rise building wind-induced response test points, the wind load recognition precision under influences of factors such as structural modal parameter errors, modal truncation and noise measurement can meet actual engineering needs, and the method of the invention provides a useful tool and a basis for the super high-rise building anti-wind design and the related research.

Description

technical field [0001] The invention relates to the technical field of wind load identification of building structures, in particular to a wind load back analysis method for super high-rise buildings based on improved Kalman filtering. Background technique [0002] In recent years, a large number of super high-rise buildings with a height of more than 300 meters have been built in the southeastern coastal areas of my country. Due to the low natural vibration frequency and small damping of these structures, they are relatively close to the main frequency range of typhoon dynamic loads. The wind-induced response is relatively large, and the wind load and wind-induced response are the primary control indicators for its safety and applicability design. Generally speaking, it is difficult to determine the wind load of high-rise buildings by on-site measurement. Although the wind tunnel test technology can test the structural wind load, due to the limitations of test simulation tec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M9/00G01H17/00
CPCG01H17/00G01M9/00
Inventor 郅伦海方明新余攀张彬
Owner WUHAN UNIV OF TECH
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