Composite material lattice sandwich tube restriction concrete foot stall with buffering energy-absorbing function

Abstract

The invention relates to a concrete pier stud confined by a composite structure sandwich pipe which has the buffer energy-absorption effect. The concrete pier stud is characterized by consisting of a pier stud jacket (7) and an internal concrete core (5) which is casted in the pier stud jacket (7); a reinforcing steel bar (4) which is arranged along the axial direction of the pier stud jacket (7) and takes effect of increasing tensile strength is pre-embedded in the internal concrete core (5); and the pier stud jacket (7) consists of an external composite pipe (1), an internal composite pipe (3), a lattice (6) connecting the external composite pipe (1) and the internal composite pipe (3) and buffer material (2) which is filled in a space surrounded by the external composite pipe (1), the internal composite pipe (3) and the lattice (6). The invention uses a composite lattice sandwich layer to enwrap the outside of the concrete pier stud, the buffer material in the sandwich layer transforms and releases impact energy by the energy for the structure or the material to recover the elastic deformation by self and can prolong the impact time, thereby reducing the impact force and achieving the effect of protecting the vehicle, the ship and the bridge, and at the same time, the concrete pier stud can increase the strength and the corrosion resistance and reduce the construction cost.

Description

technical field [0001] The invention relates to a concrete foundation column pile, especially a kind of pile with buffering effect and good anti-collision effect, which can be widely used in the field of engineering structure for reinforcement, reconstruction and new construction, as a bridge with a large traffic flow and various civil buildings. Concrete with a composite material sheath for pier columns and support members in marine, offshore, and underground engineering structures, specifically a composite material lattice sandwich tube-confined concrete pier column with buffering and energy-absorbing functions. Background technique [0002] At present, with the vigorous development of the transportation industry and economic construction, there are more and more large bridges across rivers and seas, and urban overpasses and viaducts also abound, which makes the accidents of hitting bridge piers increase sharply. Although not every collision accident leads to a major trage...

AI Technical Summary

Problems solved by technology

However, when applied to bridges, hydraulic structures, marine and offshore structures, and other erosive or exposed environments, the combined action of strong corrosive media and high stress will cause steel bars or steel pipes to rust and break quickly, eventually resulting in structural failures. destroy

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