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Prefabricated bridge double-column pier system and construction method with recoverable function after earthquake

A function-recovery, prefabricated technology, used in the erection/assembly of bridges, bridges, bridge materials, etc., can solve problems such as difficult to control earthquake damage and damage, and achieve the goal of preventing beam falling, increasing energy dissipation capacity, and reducing residual displacement. Effect

Active Publication Date: 2021-07-16
LANZHOU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In previous major earthquakes, the earthquake damage of the double-column pier system of bridges was generally serious, indicating that the traditional double-column pier design is difficult to control its earthquake damage and destruction

Method used

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  • Prefabricated bridge double-column pier system and construction method with recoverable function after earthquake
  • Prefabricated bridge double-column pier system and construction method with recoverable function after earthquake
  • Prefabricated bridge double-column pier system and construction method with recoverable function after earthquake

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Experimental program
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Effect test

Embodiment Construction

[0041] like Figure 1~Figure 6 As shown, the prefabricated bridge double-column pier system with recoverable function after the earthquake includes: pile column 1, first pier column 2, second pier column 3, first cover beam 4, second cover beam 5, double-layer composite retaining Block 6, lead rubber bearing 7, shock-absorbing and energy-dissipating cable 8, self-resetting anti-buckling support 9, pier node area 10, hole slot 11, magnetite 12, prestressed tendon 13, self-compacting concrete 14, thin wall Steel pipe 15, cross-shaped steel plate 16, top steel plate 17, SMA plate 18, waste tire or rubber fragment 19, steel box 20, inner steel plate group 21, outer steel plate group 22, anchor 23, first steel plate 24, second steel plate 25. Steel spring 26, SMA short rod 27, first cable section 28, second cable section 29, third cable section 30, fourth cable section 31, transfer steel plate 32, high-strength spring 33, SMA long rod 34, PVC pipe 35.

[0042] A hole 11 is reserv...

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Abstract

The post-earthquake prefabricated bridge double-column pier system and construction method, including piles, first pier columns, second pier columns, first cover beams, second cover beams, double-layer composite blocks, lead rubber Bearings, shock-absorbing and energy-dissipating cables, self-resetting buckling-resistant braces, and pier node areas. Between the first pier column and the first cover beam, between the second pier column and the second cover beam, the inner part is connected with prestressed tendons, and the outer part is connected together by welding; between the first pier column and the pile column, the second pier The transition between the column and the pile is through the joint area of ​​the pile pier, and the self-resetting anti-buckling support is used for reinforcement; the shock-absorbing and energy-dissipating cables are arranged crosswise between the first pier column and the second pier column, and the first cover beam and the second cover beam They are connected by lead rubber bearings, and the top surfaces of the beam ends of the first cover beam and the second cover beam are provided with double-layer combined stoppers. The invention relates to an anti-seismic system for double-column piers of bridges, belongs to the field of bridge engineering, has convenient construction and has the function of recovering after earthquakes.

Description

technical field [0001] The invention relates to a bridge double-column pier system, in particular to an assembled bridge double-column pier system with recoverable functions after an earthquake, and belongs to the field of bridge engineering. Background technique [0002] The traditional bridge double-column pier system is composed of pier columns, cap beams and transverse beams. The construction method of cast-in-place is not only time-consuming and labor-intensive, but also pollutes the environment. More importantly, the earthquake damage is serious during earthquakes. The damage mechanism is complex and the damage forms are diverse. With the rapid development of my country's economy, prefabricated bridges have shown good development prospects in the field of bridge engineering in my country, such as convenient construction, high efficiency, good quality, and green environmental protection. There are few applications and limited technology. When the double-column pier sys...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D21/00E01D19/02E01D19/04E01D2/00E01D19/00E01D101/28
CPCE01D2/00E01D19/00E01D19/02E01D19/041E01D21/00E01D2101/28
Inventor 秦洪果李军李萍石岩成昭焦应乾王卫
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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