The piers need to be as tough as steel at in ground edges. But made up of a corrosive resistant low cost light weight basalt composit tubular form blended in at ground level to a X stake base.
A wide variety of pier heights, cross section dimension, wall thickness stress levels and sectionals you coupled additions need to be rapidly layer up fabricated by a mobile factory following the installation machine from materials brought to the end of the line either overhead or underneath bypassing revenue traffic on occasional access grid loops. Span and pier coumponents can be cut to length and decoupled as structural elements for other uses using both welded and bonded systems. Welds can be used immediately but composite and bonds take cure time waiting in cues for use or set in ajacient area or stacked along right of way clearings leaning against stand offs supported by the guideway. Structure. Everything needs unattended robotic manipulation systems to lower costs.
Around the pier base is a protruding drive and pull up collar or series of ridges like square threads used to grip the pier for vibratory driving.
A ground penetrating radar looking for rocks old footings and buried utilities often illuminated buy utility one call people or robots on the ground, plus best available spot global and imaging landmark positioning from computer recognized satalite images with the best buried utility and bed rock or diol type GIS data sets the position of the pier. Attachment variable position arms off set the pier on one or both sides of the guideway span alignment tha also is the ground level access path needing at least one span position encoded clear spot beside each propert or structure entrance point.
water brought in internally to the pier is pumped out through a slide or bayonet coupling by the pier setting head used to be pressurized to several thousand PSI to lubricate and pressure wash the uncertain path of the pier. Miniaturizing of pump and impactor designs in included. The goal is to set each pier in about one minute or less then in the next minute move forward on the previous span to set the next span.
A frame ground legs, where possible reduce the construction loads around sharper curves on the piers just set but these loads will not often exceed Design wind loads anyway.
A flexible strong back bridge crane shares the loads back beyond the second span just set. The span being set with its alignment just locked in and a pier attached to it becomes the bridge crane boom to self set. The pier setting high frequency pile driver and position kunckle carriage moves along attached to the new span grabbing the attached pier for placement off to one side. Torsional forces are an uncertain problem that may be solved by setting the pier off the end of the span the swinging the span into alignment for attachment.
two piers might often be set to either side in paralell or alternating positions to give better support at cross overs and on curves.
more ideas will be added later as time allows.
This is a nonproprietary open source presentation.
mist of these ideas in their basic form are already covered by long used and publicly demonstrated devices and components that have occasionally been patented decades to over a century ago.
All ideas in here are free to be used by anybody. All word combinations above can be copied, exchanged or edited for improvement without any permission and claimed as your own if you choose.
The domain remains proprietary as well as the evolving site building remains a protected status to preserve the consents from corruption or dilution.
People as individuals and institutions or industries are encouraged to write their own versions and engineer, build, test and sell their own systems specifications and products.
A final standard will evolve or the human race will cease to progress along these lines and take the deteriorating human economy directions that we can all read about in libraries full of minute details.
Jim Burden 2019