Outdoor wind-induced snow drift testing device

A test device and wind-induced technology, applied in the field of outdoor wind-induced snow drift test devices, can solve the problems of high operating cost, poor accuracy and technicality, and slow work progress, and achieve low test operating cost, convenient disassembly and movement, and increased reliability. reliability effect

Active Publication Date: 2016-10-12
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the limitation of climate and measurement conditions, the actual snow load measurement progresses slowly and the basic data is very scarce; although the numerical simulation costs less and the design cycle is short, it lacks the support of actual measurement and experimental data, and lacks a unified standard
[0004] The wind tunnel test is the main method for Chinese and foreign scholars to study snow loads. However, there are some significant shortcomings in the application of traditional wind tunnel test techniques to study snow loads: First, wind-induced snow drift experiments in ordinary normal temperature wind tunnels can only be done with snow ( Fine silica sand, baking soda, e

Method used

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Experimental program
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Effect test

Embodiment 1

[0028] Such as figure 1 As shown, it is a functional structural block diagram of an outdoor wind-induced snow drift test device of the present invention. An outdoor wind-induced snow drift test device includes: a fan device 1 for providing wind power; a vibration device 2 for The snow vibrates and simultaneously receives the wind force provided by the fan device 1 to simulate the snowfall environment; a model device 3 is set within the drifting range of the snow accumulation and is used for simulating the house structure.

[0029] Such as figure 2 , image 3 and Figure 4 As shown, they are respectively a schematic structural view, a schematic plan view and a structural schematic view of a fan device of an outdoor wind-induced snow drift test device of the present invention.

[0030] combine figure 2 , image 3 and Figure 4 As shown, the fan device 1 includes a fan matrix group 11, and the fan matrix group 11 is an m (longitudinal)×n (transverse ) form fan matrix gro...

Embodiment 2

[0040] As described above, the outdoor wind-induced snow drift test device, the difference of this embodiment is that it combines figure 2 and image 3As shown, the outdoor wind-induced snow drift test device also includes a flow guide device 4 and a flow stabilization device 5, and the flow guide device 4 is a connecting pipe between the fan device 1 and the flow stabilization device 5 , the vibrating device 2 is set at a certain distance from the wind direction of the flow stabilizing device 5, the flow guiding device 4 is used to make the wind field more concentrated, and the flow stabilizing device 5 is used to make the wind speed more stable. In the present invention, by setting the flow guiding device 4 and the flow stabilizing device 5, the effect of the wind field on the test cross section can be improved.

[0041] to combine figure 2 and image 3 As shown, the fan device 1 is connected to the flow guide device 4 through fasteners, the flow guide device 4 is conne...

Embodiment 3

[0046] The above-mentioned test method of an outdoor wind-induced snow drift test device includes the following steps:

[0047] (1) According to the experimental requirements, the required model member 33 is placed on the platform 31 with 0° degree α, and the angle α is recorded for the record;

[0048] (2) At least one weather station is installed on both sides of the test section along the wind direction to monitor the natural wind field, and at least one weather station is installed in an open field far away from the test section to monitor the natural wind field, and the snow is placed on the vibrating device middle;

[0049] The test of the present invention is carried out outdoors, using the low temperature environment in winter to realize the experimental simulation of real snow accumulation. Compared with the traditional environmental wind tunnel, the air cooling link is omitted, the test operation cost is low, and repeated tests can be carried out; in addition, The t...

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Abstract

The present invention provides an outdoor wind-induced snow drift testing device which comprises a fan device for providing wind power, a flow stabilizing device for stabilizing a wind speed, a flow guiding device which is a connection pipe between the fan device and the flow stabilizing device, a vibration device which is arranged at the wind direction part of the flow stabilizing device and is used for simulating a snow environment, and a model device which is arranged I the drift range of snow and is used for simulating a house structure. The outdoor wind-induced snow drift testing device has the advantages that an air refrigeration link is avoided, the operation cost of a test is low, multiple repeated tests can be carried out and a fan matrix group is open, and since the limitation of blocking probability in a wind tunnel is reduced, the scale ratio upper limit of a model component becomes larger.

Description

technical field [0001] The invention relates to wind tunnel test equipment, in particular to a test device for outdoor wind-induced snow drift. Background technique [0002] With the progress of society, the span of large-scale building roof structure is getting larger and larger, the roof form is becoming more and more complex, and the effect of snow load is becoming more and more sensitive. Engineering accidents caused by ignoring the uneven distribution of snow load Therefore, the prediction of snow load has gradually become a problem that cannot be ignored in the design of long-span roofs. Most of the regulations on uneven distribution of snow load in domestic codes refer to European and American codes, lacking the support of actual measurement and experimental data, which also affects architectural design. There are some safety hazards. [0003] At present, there are three methods for snow load research, namely snow load measurement, wind tunnel test and numerical simu...

Claims

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Application Information

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IPC IPC(8): G01M9/02
CPCG01M9/02
Inventor 张清文刘盟盟范峰
Owner HARBIN INST OF TECH
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