摘要:
A formwork system, including a plurality of side formwork elements configured to confront a concrete structure, a horizontal formwork panel configured to support the concrete structure, and at least one working platform, wherein the system is configured to be split in a longitudinal direction and stricken or cycled from the concrete structure in two discrete parts.
摘要:
A foundation system includes: a pier supporting a bottom surface of a structure; a collar on the pier 1defining a first and second cable guide; a thrust bearing on the collar opposite the pier; a thrust plate on the bottom surface of the structure configured to mate with the thrust bearing; a first cable extending through the first cable guide along a first horizontal axis; a second cable extending through the second cable guide along a second horizontal axis; a first spring assembly coupled to the bottom surface of the structure and to the first cable configured to tension the first cable along the first horizontal axis to return the structure to a center position; and a second spring assembly coupled to the bottom surface of the structure, and configured to tension the second cable along the first horizontal axis to return the structure to the center position.
摘要:
Bridge systems and methods for constructing bridges having overhang surfaces employing generally rectangular, precast, prestressed concrete panels. One method includes delivering a plurality of generally rectangular, precast, prestressed concrete panels to an installation site, and delivering one or more support beams to the installation site, each support beam having a support and a base. The concrete panels are positioned on the supports of the one or more support beams with an overhang panel section and a traffic panel section. The concrete panels are then connected to the support beams by positioning steel reinforcement in block outs or voids, pouring unsolidified concrete into the voids, and curing the unsolidified concrete to form an overhang traffic surface. Bridges constructed employing the precast, prestressed concrete panels and methods. Other bridge systems employ prestressed concrete L-walls and double-T members, where weight-bearing L-walls have pockets for webs of the double-T members.
摘要:
An intelligent integrated anti-collision system and method for a pier, including: a radar sensing device disposed at the joint between the pier and a girder, image collection devices disposed around the pier, control system, hydraulic system and execution device, where the radar sensing and image collection devices transmit collected signals to the control system, which uses the hydraulic system to control the action of the execution device; the execution device is disposed at a middle part of the pier and includes a plurality of sections of steel-reinforced rubber concrete girder connected end to end through pulleys, the hydraulic system can drive the pulleys to rotate to enable the sections to be located on the same horizontal line, and an energy dissipation apparatus is disposed at the tail end of the last section to realize energy dissipation of the energy generated by impact when an object impacts the energy dissipation apparatus.
摘要:
A steel-fiber reinforced polymer (FRP) composite material reinforced concrete column comprises an inner steel pipe arranged in the center, wherein the inner steel pipe is internally provided with an unbonded steel strand; the outside of the inner steel pipe is provided with an outer steel pipe, concrete is poured between the inner steel pipe and the outer steel pipe, a plurality of additional small steel pipes are evenly arranged outside the outer steel pipe, and each of the additional small steel pipes is internally provided with an additional unbonded steel strand. A composite bar cage coaxial with the outer steel pipe and arranged on the outside thereof is also provided, wherein both the outer steel pipe and the composite bar cage are covered by high-ductility concrete, and at a core area, the outside of the high-ductility concrete is wrapped with an anti-spalling layer.
摘要:
A bridge support system includes a support embankment formed from at least one light-weight material. The support embankment is arranged to support and be positioned under a footing of a bridge structure. A restraining system is operatively connected to the support embankment. The restraining system includes cross-members which are angularly offset from each other and arranged to limit at least one of lateral and vertical movement of the support embankment under high levels of excitation.
摘要:
A solid reinforced concrete column and a method of constructing the same are disclosed. The solid reinforced concrete column includes outer main reinforcing bars, inner reinforcing bars, inner transverse reinforcing bars, outer transverse reinforcing bars, and concrete. The outer main reinforcing bars are arranged in an axial direction. The inner reinforcing bars are each arranged to be placed between two or three of the outer main reinforcing bars inside the two or three outer main reinforcing bars in the axial direction. The inner transverse reinforcing bars are each arranged to connect the two or three outer main reinforcing bars and the inner reinforcing bar in a transverse direction. The outer transverse reinforcing bars are arranged to surround the outer main reinforcing bars outside the outer main reinforcing bars in the transverse direction. The concrete is placed to bury the reinforcing bars.
摘要:
A bridge pier structure includes a damper having damping characteristics, a substructure joined with a lower end portion of the damper, and a pillar member provided upright on the substructure, a side surface of the pillar member being joined with an upper end portion of the damper. The damper is substantially parallel to the side surface of the pillar member.
摘要:
A bridge pier structure includes a damper having damping characteristics, a substructure joined with a lower end portion of the damper, and a pillar member provided upright on the substructure, a side surface of the pillar member being joined with an upper end portion of the damper. The damper is substantially parallel to the side surface of the pillar member.
摘要:
Disclosed are several practical refinements, extensions, additions, and improvements to the manufactured three-dimensional continuous convex-concave fairing with attached vortex generators. The piecewise continuously varying slope and curvature fairings provide manufacturing cost reductions, as well as cost reductions by reducing the frequency and complexity of monitoring practices for bridges and elimination of temporary fixes that require costly annual or periodic engineering studies and construction to mitigate scour on at-risk bridges. The probability of bridge failure and its associated liability to the public is totally avoided since the root cause of local scour is prevented.