An earthquake-resistant girder bridge pier

An anti-seismic type and pier technology, applied in bridges, bridge construction, bridge parts, etc., can solve the problems of limited seismic force dissipation effect and inapplicability, achieve good anti-seismic effect, facilitate repair, and improve the effect of compressive capacity

Active Publication Date: 2020-01-21
XIAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • An earthquake-resistant girder bridge pier
  • An earthquake-resistant girder bridge pier
  • An earthquake-resistant girder bridge pier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as figure 1 The shown one kind of anti-seismic girder bridge pier includes an anti-seismic energy consumption section 1, a strengthened transition section 2 and a general pier body section 3 connected in sequence from bottom to top. The anti-seismic energy dissipation section 1 includes a core column 11 made of ultra-high performance concrete and a cladding layer 12 arranged outside the core column 11, the cladding layer 12, the reinforced transition section 2 and the general pier section 3 They are all made of ordinary concrete.

[0044] In this embodiment, an anti-seismic energy-dissipating section 1 is set at the bottom of the pier. The anti-seismic energy-consuming section 1 is composed of a core column 11 made of ultra-high performance concrete and a cladding layer 12 made of ordinary concrete. , the seismic energy dissipation section 1 is in the plastic hinge region, and the bending moment it receives is greater than that of the rest of the pier, and the for...

Embodiment 2

[0055] Such as image 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the difference between this embodiment and Embodiment 1 is that in the pier of the earthquake-resistant girder bridge, a plurality of first vertical steel bars 13 are arranged in the cladding layer 12 and are used to connect a plurality of first vertical The first stirrup 14 connected to the steel bar 13, the reinforced transition section 2 is provided with a plurality of second vertical reinforcement 21 and a second stirrup for connecting a plurality of the second vertical reinforcement 21 22. A plurality of third vertical reinforcing bars 31 and third stirrups 32 for connecting the plurality of third vertical reinforcing bars 31 are arranged in the general pier section 3; the lower end of the second vertical reinforcing bars 21 It extends into the cladding layer 12 of the seismic energy dissipation section 1 and is connected to the upper end of the corresponding first vertical steel bar 1...

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Abstract

The present invention disclosed a seismic beam bridge pier, including the seismic energy consumption section connected from the bottom to top, strengthening the transition section and the general pier section.And the cover layer set on the outside of the core column, the cover layer, the enhanced transition section and the general pier section are poured by ordinary concrete.The earthquake -resistant beam bridge pier has a good seismic effect and facilitates post -earthquake repair, which does not affect normal traffic.

Description

technical field [0001] The invention belongs to the technical field of girder bridges, in particular to an anti-seismic girder 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 steel bar will yield. The pier column entering the plast...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D19/02
CPCE01D19/02
Inventor 柴生波
Owner XIAN UNIV OF SCI & TECH
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