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Bridge compound pier stud structure based on orientation ECC and construction process

A composite pier and column structure technology, which is applied to bridges, bridge construction, bridge parts, etc., can solve problems such as poor compaction of pouring, achieve the effects of improving seismic energy absorption capacity, reducing maintenance costs, and improving effective utilization

Active Publication Date: 2019-02-15
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the large number of steel bars bound, these critical parts tend to be under-consolidated

Method used

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  • Bridge compound pier stud structure based on orientation ECC and construction process
  • Bridge compound pier stud structure based on orientation ECC and construction process
  • Bridge compound pier stud structure based on orientation ECC and construction process

Examples

Experimental program
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Effect test

Embodiment

[0074] The ECC orientation machine used in this embodiment, such as figure 1 As shown, it is composed of a first propulsion part and a second propulsion part; the first propulsion part includes a first motor, a stirring chamber, a first discharge cylinder and a vacuum chamber, and the stirring chamber, the first discharge cylinder and the vacuum chamber are sequentially Connected, the first motor is connected to the first transmission shaft, the first transmission shaft runs through the mixing chamber, the first discharge cylinder and the vacuum chamber in sequence, the part of the first transmission shaft located in the mixing chamber is provided with stirring blades, and the first transmission shaft is located in the first The part of the discharge cylinder is provided with a first helical blade; the first propulsion part includes a second motor and a second discharge cylinder, the second motor is connected to the second rotating shaft, and the second rotating shaft passes th...

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Abstract

The invention discloses a bridge compound pier stud structure based on an orientation ECC and a construction process. The bridge compound pier stud structure comprises a pier stud plastic hinging areafor connecting a concrete pier stud base and a concrete pier stud. The pier stud plastic hinging area is of a reinforced concrete columnar structure. Concrete adopted in the pier stud plastic hingingarea is an oriented-fiber-enhanced cement-base composite. The oriented-fiber-enhanced cement-base composite is a cement-base composite with fibers in a cement base body arrayed in one direction. Thetending direction of the fibers in the oriented-fiber-enhanced cement-base composite is the same as the axial direction of the pier stud plastic hinging area. A reinforcing steel bar framework adoptedin the pier stud plastic hinging area is formed by binding a plurality of low-yield reinforcing steel bars and a plurality of high-strength reinforcing steel bars through reinforcement stirrups. Thelow-yield reinforcing steel bars and the high-strength reinforcing steel bars are parallel in pairs and located in different planes.

Description

technical field [0001] The invention relates to a bridge composite pier column structure and construction technology based on directional ECC. Background technique [0002] The statements herein merely provide background information related to the present invention and may not necessarily constitute prior art. [0003] Most bridge piers are in the form of reinforced concrete structures, which are mainly composed of ordinary concrete and steel bars. Under the action of earthquake load, after the longitudinal reinforcement of the concrete pier column yields, the section of the column will produce a certain rotation angle, forming a section of plastic hinge area. The formation of plastic hinges can absorb part of the earthquake energy and reduce earthquake damage. In engineering, the seismic performance of concrete structures is generally improved by using high-strength concrete, high-strength stirrups, and reinforcing stirrups in the plastic hinge area of ​​bridge pier colum...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/02E01D21/00
CPCE01D19/02E01D21/00
Inventor 管延华吴佳杰孙仁娟葛智王怡凯王国刚李洪印夏培斋王茂新
Owner SHANDONG UNIV
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