Integrity testing device for construction film material under action of force and thermal radiation and using method

Abstract

The invention relates to an integrity testing device for a construction film material under the action of force and thermal radiation and a using method. The method comprises the steps that a single-shaft or double-shaft film material test piece is laid on two or four groups of rib sliding blocks; the two or four drooping ends of the test piece separately and sequentially bypass triangular prism surfaces of two or four sets of self-locking clamps; the lower edges of two or four front vertical suspended beams press the surface of the test piece; the rest ends of the test piece are upturned; thetwo ends of two or four sets of front vertical suspended beams respectively penetrate the lifting eyes I of two or four lifting hooks and are embedded into two or four pairs of vertical groove IV andvertical groove V of a supporting device; mass blocks with the same weight are laid on two or four supporting plates; a lifting device, on which a thermal radiation source and video equipment are fixed, is fixed on the ground; the thermal radiation source and the video equipment are turned on; when the single-shaft or double-shaft film material test piece is broken, a test is over. The device canperform testing research on the film material test piece with different thermal radiation intensities and at different film surface stress ratio states, so as to obtain data, such as failure development processes, failure modes and integrity duration subjected to fire, of the film material test piece.

Description

technical field [0001] The invention relates to the fields of building fire prevention and fire fighting and rescue, in particular to a device for testing the integrity of building membrane materials under the action of force and heat radiation and a method of use thereof for testing the high temperature resistance performance of membrane materials used in membrane structure buildings under simulated service conditions. Background technique [0002] As a new building material at the end of the 20th century—membrane material, with its light weight, high light transmittance, good anti-fouling and self-cleaning properties, it is known as the fifth type of building material after steel, cement, wood, and glass. . [0003] Membranes are mainly divided into two categories: fabric coated membranes and non-woven coated membranes. [0004] The fabric coating membrane is composed of two parts: the fabric base layer and the surface coating. According to its development history, it ca...

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Problems solved by technology

[0021] The invention overcomes the deficiency in the prior art that integrity tests cannot be carried out on different types of membrane materials under different constant membrane surface stress states and different continuous heating conditions, and can be prepared from different types of membrane materials with different thicknesses and widths as required. The uniaxial or biaxial test pieces of different thermal radiation intensities and different film surface stress ratios (the ratio of the stress applied to the film specimen at the beginning of the test to the maximum force that the film can withstand at room temperature) are tested and studied.

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