首页> 中文期刊> 《建筑技术开发》 >基于静态位移测量的索膜结构损伤识别研究

基于静态位移测量的索膜结构损伤识别研究

         

摘要

Spokes-space-cable-membrane structure is a kind of more extensive application of large-span space structure. In such a structure,cable is the main components to provide pre-stressed and structural rigidity. In the use of the process,due to external loads and environmental factors, it may have led to the pre-stressed cables relaxation. Although a small amount of the loss of pre-stressed,structure will not be any major impact. When the loss is up to a certain extent,the structure of the state will be significant change. As a result,it is necessary to develop actively health monitoring and damage detection research of pre-stressed state of spokes-space-cable-membrane structure. This article studies the effects of temperature on the structure. And with the technical line of measuring the static displacement and force and the cable identification of damage.%轮辐式空间索膜结构是一类应用越来越广泛的大跨度空间结构形式。在此类结构中。拉索是提供预应力及结构刚度的主要构件。使用过程中,由于外界荷载及环境因素的影响,有可能导致拉索产生预应力松弛的现象。虽然预应力的少量损失不会对结构有大的影响,但当该损失达到一定的程度后,结构的性态就会发生明显变化。因此,积极开展轮辐式空间索膜结构中拉索预应力状况的健康监测与损伤识别研究是必要的。以轮辐式空间索膜结构为研究对象,考察了温度对结构的影响,并采用通过测量静力位移和索力的损伤识别方法相结合的技术路线,就该类结构中拉索的损伤识别问题进行了初步探讨。

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