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(內(nèi)蒙古工業(yè)大學(xué)土木工程學(xué)院， 呼和浩特 010051）
［摘要］折疊網(wǎng)架結(jié)構(gòu)以內(nèi)外兩層轂盤節(jié)點(diǎn)之間的距離構(gòu)成結(jié)構(gòu)的厚度，以相交于樞軸節(jié)點(diǎn)處的剪桿單元作為受力構(gòu)件。豎向荷載作用下，體系豎向位移和橫向位移的變形曲線均為拋物線，精度不低于R2=0-99，縱向位移與二者相比不在一個(gè)數(shù)量級，可以忽略不計(jì)；同一轂盤節(jié)點(diǎn)的下移和外擴(kuò)以及同一橫軸上不同轂盤節(jié)點(diǎn)的極值下移和極值外擴(kuò)間均成線性關(guān)系，精度不低于R2=0-96。折疊網(wǎng)架結(jié)構(gòu)根據(jù)需要通過單元的拼接與組合可以形成不同的體量，其最優(yōu)跨度組合為沿縱橫向均采用奇數(shù)跨。
［關(guān)鍵詞］折疊網(wǎng)架結(jié)構(gòu)； 結(jié)構(gòu)特點(diǎn)； 變形規(guī)律； 跨度組合
中圖分類號：TU33文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2020)02-0043-06
Deformation and span of foldable space trusses
Wang Xueqin
(College of Civil Engineering, Inner Mongolia University of Technology, Hohhot 010051, China)
Abstract:The thickness of the foldable space trusses is composed of the distance between the inner and outer hub nodes, and the shear member element intersecting the pivot node is used as the mechanical component. Under the action of vertical load, the deformation curves of vertical displacement and lateral displacement of the system were parabola, the accuracy was not less than R2=0-99, and the longitudinal displacement was not in an order of magnitude compared with the two, which could be ignored; the downward movement and outward expansion of the same hub node and the extreme downward movement and outward expansion of different hub nodes on the same horizontal axis were linear, and the accuracy was not less than R2=0-96. According to the needs of foldable space trusses, different volumes could be formed through the splicing and combination of elements, and the optimal span combination was to adopt odd span along the vertical and horizontal directions.
Keywords:foldable space trusses; structural feature; deformation rule; span combination
作者簡介：王雪琴，碩士，副教授，Email: xueqin1657870236@163.com。
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