A device for measuring instantaneous internal pressure of a building structure

Abstract

The invention discloses a transient internal pressure measuring device for building structures, which is applied in the field of wind tunnel testing devices. The transient internal pressure measuringdevice includes a wind generating section and a test section for placing a building model. The situation that the door, the window and the glass curtain wall of the building being suddenly destroyed can be automatically controlled and simulated by employing an electric control windshield to reduce the influence of the manual operation on the test result, achieve autonomous control of the positionand the size of a crevasse, control the test wind power and wind direction and allow the wind pressure sensors to be distributed at the circumferential direction of the inner structure of the buildingso that it is comprehensively achieved that the relation of the internal pressure distribution conditions of the wind, the wind direction, the location of the crevasse, the size of the crevasse and the inner layer of the building at the downwind, leeward and crosswind surfaces can be analyzed and researched by the test device to achieve the test effects of multi-factor coupling and multi-result output so as to provide good theoretical research support for the field of instantaneous internal pressure measurement.

Description

Technical field [0001] The invention belongs to the field of wind tunnel test devices, and particularly relates to a device for measuring instantaneous internal pressure of a building structure. Background technique [0002] When the glass doors, windows or curtain walls of the building structure are suddenly destroyed under the action of strong natural wind, the wind will pour into the building from the holes in the damaged area, causing the wind pressure inside the building to change significantly; similarly, the exhibition center, gymnasium, train When the doors and windows of large public buildings such as stations are suddenly opened artificially under the action of strong winds, the wind-induced internal pressure generated by the wind entering the building will also affect the comfort of indoor personnel and the stability of indoor pendants. Greater impact. [0003] In order to study clearly the influence of the building structure on the inner structure and the wind pressure...

AI Technical Summary

Problems solved by technology

When the above two control methods control the sudden opening of doors and windows or the sudden destruction of glass curtain walls by artificially controlling pull wires or needles, it will often cause interference to the wind field of the wind tunnel test, and the operability is very poor. The test data has a greater impact, the reliability of the test results is poor, and the accuracy is low

In addition, the above method cannot automatically select the location of the damaged air leakage cavity according to the test requirements, that is, it cannot simulate the damage of doors, windows or curtain walls at different positions on the wind-affected side of the building. Of course, it cannot automatically select the damage to generate air leakage according to the test requirements. The size of the void, that is, the number of doors and windows that cannot simulate the damage of the wind-facing side of the building

Therefore, it is impossible to study the relationship between the location of the breach, the size of the breach and the distribution of internal pressure

[0005] In addition to the above problems, the existing wind tunnel test devices for testing internal pressure usually do not have the relationship between coupling wind direction, wind force and other factors and internal pressure distribution. At the same time, the internal pressure measurement surface is relatively single, and usually also measures the downwind surface. while ignoring the wind pressure on the leeward side and across windward side

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