A construction method of an anti-seismic beam bridge pier

Abstract

The invention discloses a construction method of an anti-seismic beam bridge pier, which comprises the following steps: first, construction of a core column; construction of a core column of an anti-seismic energy dissipation section on a pier bearing platform, wherein the core column is made of ultra-high performance concrete; second, construction of a core column; and third, construction of a core column. 2, consturcion of clad layer, strengthen transition section and the common pier body section: firstly, pouring ordinary concrete on the outside of the core column to form a cladding lay, and the core column and the cladding layer form an anti-seismic energy dissipation section of the bridge pier; And then pouring ordinary concrete on the seismic energy dissipation section to form a strengthened transition section; At that reinforce transition section, ordinary concrete is poured to form a general pier section. The construction method is simple in operation and convenient in construction, and the pier of the aseismic beam bridge made by the construction method has good aseismic effect, is favorable for repairing after the earthquake, and does not affect normal traffic.

Description

technical field [0001] The invention belongs to the technical field of beam bridge construction, and in particular relates to a construction method for an earthquake-resistant beam bridge pier. Background technique [0002] Under the action of earthquakes, the design principles of bridges are generally "not damaged by small earthquakes, repairable by moderate earthquakes, and not collapsed by large earthquakes". Beam bridges are the most common bridge type, and the seismic performance of beam bridges mainly depends on the seismic performance of pier columns. . The seismic design of bridges requires that under strong earthquakes, pier columns can be damaged, produce plastic deformation, and dissipate seismic energy. The region where the pier-column plastic hinge is generated is generally fixed, and generally occurs at the bottom of the pier-column of the beam bridge. After the pier column enters the plasticity, the concrete of the pier body will inevitably crack, and the st...

AI Technical Summary

Problems solved by technology

However, its disadvantages are as follows: 1. The above patents are only aimed at node-assembled piers, and are not applicable to cast-in-place piers that account for the vast majority of bridges

2. The UHPC of the outer layer limits the deformation of the internal energy-dissipating materials, and the energy-dissipating materials (energy-dissipating steel plates, viscoelastic materials, etc.) Diffusion effect is limited

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