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BBV Systems Co., Ltd. is generally focusing on post-tensioning and geotechnical systems for construction. In particular four main fields of construction will be served by the company with specified systems and products, i.e.: structural civil, geotechnical civil, tunneling & mining and concrete reinforcement. The category structural civil covers all common and specialized structures and construction methods of civil engineers related to structural design.
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CATEGORY |
APPLICATION |
SYSTEM / PRODUCT |
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STRUCTURAL CIVIL |
Bridges, Buildings, Industrial Facilities, Towers, Containments, Harbors,
Structural Members, Launching Girders,
Form Travelers, Formwork Panels |
Bar Tendons, Seismic Buffers, Hold Down Bolts, Form Ties, Suspension Rods, Heavy Lifting Systems. |
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BAR
TENDONS
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Bar Tendons can be assembled from high strength threaded BB Bars with related accessories and measures taken for corrosion protection of the entire system. Bar tendons may either be stressed by means of hydraulic jacks or they remain unstressed after installation to cope with later or possibly later occurring strains. Installation can be horizontal or vertical as well as transverse or longitudinal likewise.
In seismic prone areas structural members usually have to be held in position to withstand horizontal forces resulting from earthquakes. Seismic Buffers or stoppers are introduced by structural engineers for bridge superstructures in such areas to prevent the superstructure spans from horizontally gliding off their pier tops by solid buffer bars. The buffers will be anchored safely into the pier heads.
Hold Down Bars or Shear Keys are designed to keep any structural member in place and to withstand the uplift or shear forces occurring when the superstructure tends to move in vertical or horizontal direction, relatively to the substructure.
Form Ties are commonly used to tie formwork panels together and withstand the pressure from freshly cast concrete until structural members will have cured sufficiently to carry dead loads. Different accessories to the high grade BB Bar of diameter 15 or 20 mm like wing nuts or water stop couplers can be supplied to facilitate assembly and dismantling.
Suspension Rods or hanger bars can be used temporarily or permanently. Temporary hanger bars are used to lift, hold and lower heavy weights into place by means of cranes, gantries, girders or other hydraulic devices. By use of suspension rods attached to a bridge spanning arch or suspension cable structure and its superstructure a carriageway could be permanently held in place without intermediately supporting substructure.
Heavy lifting and lowering bar systems comprise high strength thread BB Bars of suitable diameters and specific lifting accessories such as split nuts and tapered couplers. Bars can be lifted or lowered by means of hydraulic bar jacks and actual bar position can be incrementally locked by the split nuts on spherical seatings.
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