在内部，桁架涂成红色，弯折打开，形成一个小凹室，为游客提供座位。
Inside, the trusses are painted red and folded open, creating small alcoves for visitors to sit within.
首先应用小挠度弹性理论，在一些合理简化假设的基础上，推导自平衡索桁架的初始刚度、松弛刚度及临界松弛荷载公式。
Based on the small-deflection elastic theory and some simplified assumptions, the initial stiffness, the slack stiffness and the critical slack load have been derived theoretically.
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