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Pretension can not quantify the problem in order to solve the domestic film structure , it is necessary to find a convenient , reliable, and higher precision film structure pre-tension test method from the fundamental . According to the mechanical properties of architectural membrane , to learn computational theory of the single cable and single cable tension measurement method to study the relationship between pre- tension of the diaphragm of a certain size to apply the load caused the plane displacement , a convenient membranes pre- tension test method . This method can be controlled, measurable outside the plane displacement value to calculate the pre-tension of the membrane in each direction . The test results show that the test system developed based on the above measurement method is easy to operate , and the use of reliable , high measurement accuracy . This paper studies include the following aspects: 1 , analysis of the causes of pre-tension , pre- tension test method to determine the overall design of the system . 2 , single- cable tension measurement as the theoretical basis and the units of the pretension measurement of the width of the film strip , to establish the mathematical model . 3 , the design of the mechanical structure of the test system and the hardware circuit , and the preparation of the membrane pre- tension test system software . 4, for the relevant test of test, test results show that the principle of this test system is correct , reliable performance, the membrane structure applied to the membrane surface of the pre-tension can be effectively tested . The development of the membrane structure of the pre- tension test system to fill the domestic blank , their widespread use will end the history of pre- tension of the membrane surface is estimated by artificial experience , \membrane surface pre- tension ) provide a quantitative basis , favorable means for the design and construction of membrane structures closely integrated .
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