Thetubewillbesupportedbypillarswhichconstrainthetubeintheverticaldirectionbutallowlongitudinalslipforthermalexpansionaswellasdampenedlateralsliptoreducetheriskposedbyeart... The tube will be supported by pillars which constrain the tube in the vertical
direction but allow longitudinal slip for thermal expansion as well as dampened
lateral slip to reduce the risk posed by earthquakes. In addition， the pillar to
tube connection nominal position will be adjustable vertically and laterally to
ensure proper alignment despite possible ground settling. These minimally
constrained pillars to tube joints will also allow a smoother ride. Specially
designed slip joints at each stations will be able take any tube length variance
due to thermal expansion. This is an ideal location for the thermal expansion
joints as the speed is much lower nearby the stations. It thus allows the tube to
be smooth and welded along the high speed gliding middle section.
The spacing of the Hyperloop pillars retaining the tube is critical to achieve the
design objective of the tube structure. The average spacing is 100 ft (30 m)，
which means there will be near 25，000 pillars supporting both tubes and solar
panels. The pillars will be 20 ft (6 m) tall whenever possible but may vary in
height in hilly areas or where obstacles are in the way. Also， in some key areas，
the spacing will have to vary in order to pass over roads or other obstacles.
Small spacing between each support reduces the deflection of the tube keeping
the capsule steadier and the journey more enjoyable. In addition， reduced
spacing has increased resistance to seismic loading as well as the lateral
acceleration of the capsule.
有些桥墩与管道之间的细节问题希望能仔细处理清楚，十分感谢！！
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