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Unbonded post-tensioned pre-stressed assembly type pier connection structure and construction method thereof

A post-tensioning and connecting structure technology, applied in the direction of erecting/assembling bridges, bridge parts, bridge materials, etc., can solve the problem of high probability of damage and collapse of curved girder bridges, achieve good anti-collapse performance, improve crack resistance and Durability, effect of improving construction quality and construction accuracy

Pending Publication Date: 2019-10-15
JIANYAN DETECTION GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, curved girder bridges have a high probability of damage and collapse in strong earthquakes

Method used

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  • Unbonded post-tensioned pre-stressed assembly type pier connection structure and construction method thereof
  • Unbonded post-tensioned pre-stressed assembly type pier connection structure and construction method thereof
  • Unbonded post-tensioned pre-stressed assembly type pier connection structure and construction method thereof

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Experimental program
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Embodiment Construction

[0033] The technical solutions of the present invention will be further illustrated and described below through specific embodiments in conjunction with the accompanying drawings.

[0034] like figure 1 As shown, a non-bonded post-tensioned prestressed assembled pier connection structure includes a cover beam 1, a cap 2, two pier columns 3 and two prestressed tensioning mechanisms 4, a cover beam 1, a cap 2 and The pier columns 3 are all components and are manufactured in the factory, which can improve construction quality and construction accuracy, reduce on-site workload, have less impact on the environment, and fast construction speed.

[0035] A cover beam 1, in which a cover beam prestressed pipe 10 is pre-embedded, and a number of cover beam longitudinal reinforcement sections 110 are arranged on its lower surface;

[0036] The bearing platform 2 has a platform prestressed pipeline 20 pre-embedded in it, and its upper surface has at least one reserved groove 21. The low...

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Abstract

The invention discloses an unbonded post-tensioned pre-stressed assembly type pier connecting structure and a construction method thereof. The unbonded post-tensioned pre-stressed assembly type pier connecting structure comprises at least one capping beam, at least one bearing platform, at least one pier column and at least one pre-stressed tensioning mechanism, wherein the upper end of the pier column is provided with a plurality of upper pier column longitudinal rib sections extending out, the lower end of the pier column is provided with a plurality of lower pier column longitudinal rib sections extending out, the capping beam is provided with a plurality of capping beam longitudinal rib sections extending out, and the bearing platform is provided with a plurality of bearing platform longitudinal rib sections extending out; the bearing platform and the capping beam are respectively pre-embedded with a grouting pipe, the plurality of the upper pier column longitudinal rib sections, the plurality of the lower pier column longitudinal rib sections, the plurality of the capping beam longitudinal rib sections and the plurality of the bearing platform longitudinal rib sections are allsleeved with the grouting pipe, the plurality of the upper pier column longitudinal rib sections and the plurality of the lower pier column longitudinal rib sections are respectively connected with the plurality of the capping beam longitudinal rib sections and the plurality of the bearing platform longitudinal rib sections through ultra-high performance concrete (UHPC) poured in the grouting pipe so as to enable the at least one capping beam, the at least one bearing platform and the at least one pier column to be integrated, and the pier column and the capping beam have self-resetting capability through tensioning of the pre-stressed tensioning mechanism.

Description

technical field [0001] The invention belongs to the technical field of prefabricated pier construction, and in particular relates to a non-bonded post-tensioned prestressed prestressed prefabricated pier connection structure and a construction method thereof. Background technique [0002] Prefabricated bridges have the characteristics of fast construction, small environmental impact and reliable quality. They have been widely used in urban bridges with heavy traffic pressure and cross-sea bridges with short effective construction time, including the United States, New Zealand and other developed countries, as well as Southeast Asia and Taiwan. area. At present, the application and research of prefabricated bridges in China are basically concentrated on the superstructure, and the research on prefabricated piers started relatively late, and they are mostly used in the construction of offshore bridges that are difficult to construct, such as Donghai Bridge, Hangzhou Bay Bridge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/02E01D21/00E01D101/28
CPCE01D19/02E01D21/00E01D2101/28
Inventor 邱发强朱三凡夏樟华林友勤孙明松陈树辉
Owner JIANYAN DETECTION GRP CO LTD
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