A construction method for earthquake-resistant girder bridge piers

Abstract

The invention discloses a construction method for an anti-seismic girder bridge pier, comprising the following steps: Step 1, construction of a core column: constructing a core column of an anti-seismic energy-consuming section on the pier cap, and the core column is made of ultra-high performance concrete Made; Step 2, the construction of cladding layer, reinforced transition section and general pier body section: first pouring ordinary concrete on the outside of the core column to form the cladding layer, and the core column and cladding layer form the anti-seismic energy dissipation section of the bridge pier; then Ordinary concrete is poured on the anti-seismic energy-consuming section to form a strengthened transition section; then ordinary concrete is poured on the strengthened transition section to form a general pier body section. The construction method is easy to operate and convenient to construct. The anti-seismic girder bridge pier made by the construction method has good anti-seismic effect, is beneficial to post-earthquake repair, 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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