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Cast in-situ piling pile reinforcement bridge pier structure and construction method

A technology for bored piles and piers, which is applied in the directions of bridges, bridge maintenance, bridge reinforcement, etc., can solve problems such as not being applicable and not having reinforcement effect, etc. Effect

Active Publication Date: 2009-10-28
CHONGQING SURVEY INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually, the existing technology adopts expanding the pier foundation or increasing the cross-sectional area of ​​the pier for reinforcement treatment; however, it is not suitable for some bridges with limited reinforcement space and large buried depth of the pier and abutment, and has no obvious effect. Reinforcement effect

Method used

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  • Cast in-situ piling pile reinforcement bridge pier structure and construction method
  • Cast in-situ piling pile reinforcement bridge pier structure and construction method
  • Cast in-situ piling pile reinforcement bridge pier structure and construction method

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Experimental program
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Embodiment Construction

[0025] see figure 1 , 2 , the bored pile reinforced bridge abutment structure of the present invention, it is made up of bedrock, abutment 1, steel beam 2, reinforced concrete frame 3, spiral stirrup 4; Abutment 1 is fixed on the bedrock, abutment 1 inside There are multiple boreholes vertically penetrating the abutment 1 and deep into the bedrock; the spiral stirrup 4 is arranged on the tendon 2; the tendon 2 is arranged in the borehole, and the lower end of the tendon 2 is embedded in the bedrock; Beam 2 and bedrock are anchored by cast-in-place reinforced concrete; the upper end of each steel tendon 2 and the upper surface of pier 1 are anchored by reinforced concrete frame 3 .

[0026] see image 3 , 9 , the drilled holes are arranged on the upper surface of the abutment 1 in the form of plum blossom piles, the diameter of the drilled holes is 20-30 cm, and the number of drilled holes matches the number of steel tendons 2; the cross section of the reinforced concrete fr...

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Abstract

The invention discloses a cast in-situ piling pile reinforcement bridge pier structure and construction method, composed of a bedrock, a pier, a tendon, a reinforced concrete frame and a spiral hoop, wherein the vertical throughout pier and a plurality of drilling holes penetrating into the bedrock are set in the pier and the tendon is set in the drilling holes and embedded into the bedrock and the drilling hole, the tendon and the bedrock are anchored by casting the reinforced concrete and the upper end of each tendon is anchored on the upper surface of the pier by the reinforced concrete frame. The invention also discloses a construction method of the cast in-situ piling pile reinforcement bridge pier. The cast in-situ piling pile reinforcement bridge pier has features of strong adaptability for the pier structure of the inhere bridge, wide application, simple and firm structure, obvious anchoring effect.

Description

technical field [0001] The invention relates to a bridge reinforcement technology, in particular to a bored pile reinforcement bridge abutment structure and a construction method. Background technique [0002] As an important part of the traffic artery, bridges play an extremely important role in national economic construction and social development. Whether the bridge pier structure is normal or not is directly related to the overall safety of the bridge. Once the load is insufficient, there will be great safety hazards. Therefore, it is particularly important to take reasonable reinforcement methods to deal with it. Usually, the existing technology adopts expanding the pier foundation or increasing the cross-sectional area of ​​the pier for reinforcement treatment; however, it is not suitable for some bridges with limited reinforcement space and large buried depth of the pier and abutment, and has no obvious effect. reinforcement effect. Contents of the invention [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D22/00
Inventor 祝小龙周建庭
Owner CHONGQING SURVEY INST
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