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Bridge abutment reinforcement structure with end-bearing inclined micro pile groups and construction method thereof

A technology for strengthening structures and construction methods, which is applied in the direction of basic structure engineering, bridges, bridge parts, etc., can solve the problems of low pullout resistance of a single anchor rod, difficult drilling construction, and a large number of anchor rods, etc., to improve the resistance Pushing ability, reducing construction difficulty, reducing the effect of construction site and space requirements

Pending Publication Date: 2018-07-27
GUANGDONG METALLURGICAL & ARCHITECTURAL DESIGN INST
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Problems solved by technology

The main problem of this scheme is that the reinforced concrete table body is densely reinforced, and the drilling construction is difficult; in addition, if the anchor rod cannot be anchored in the rock formation, the single pullout resistance of the anchor rod is low, and the number of anchor rods is large. Great damage to the original platform structure

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  • Bridge abutment reinforcement structure with end-bearing inclined micro pile groups and construction method thereof
  • Bridge abutment reinforcement structure with end-bearing inclined micro pile groups and construction method thereof
  • Bridge abutment reinforcement structure with end-bearing inclined micro pile groups and construction method thereof

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Embodiment Construction

[0028] refer to Figure 1 ~ Figure 4 , the present invention is an abutment reinforcement structure adopting end-supporting inclined miniature piles, comprising a support beam 3 connected to the abutment to be reinforced, the other end of the support beam 3 is provided with a cap 2, and the bottom of the cap 2 is connected to A plurality of micro piles 1, each micro pile 1 is arranged obliquely towards the direction of the abutment to be reinforced.

[0029] Specifically, the micropile 1 is arranged on the side of the abutment to be reinforced away from the embankment, and each single pile of the micropile group structure is arranged obliquely. After the oblique arrangement of the single micropile 1, the single micropile 1 provides the horizontal component of the reaction force, which can directly resist the earth pressure behind the abutment. The inclined arrangement of the single micropile 1 greatly improves the anti-thrust stiffness of the abutment, and fundamentally solve...

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Abstract

The invention discloses a bridge abutment reinforcement structure with end-bearing inclined micro pile groups and a construction method thereof. The micro pile groups, a bearing platform and a supporting beam are adopted to constitute an additional support structure of a bridge abutment, horizontal support is provided for an original bridge abutment, so that the anti-pushing ability of the bridgeabutment is greatly improved. The bridge abutment reinforcement structure with the end-bearing inclined micro pile groups and the construction method thereof have simple and effective structure, low construction difficulty and low construction cost, has obvious significance for the reinforcement of the bridge abutment and great popularization value, and is used in the field of bridge construction.

Description

technical field [0001] The invention relates to the field of bridge construction, in particular to an abutment reinforcement structure using end-supporting inclined miniature pile groups and a construction method thereof. Background technique [0002] With the rapid development of highways, railways and municipal infrastructure, the number and scale of bridge projects are increasing rapidly, and some of the bridges in service are suffering from diseases to varying degrees due to various reasons. Among the various common diseases of bridges, the proportion of diseases in abutments is much higher than that of piers with the same substructure, which is related to the mechanical characteristics of abutments. [0003] The abutment is located at the junction of the embankment and the bridge. In addition to bearing the vertical load of the bridge superstructure, the abutment also bears the earth pressure generated by the embankment behind the abutment. Especially for high embankme...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/02E02D27/14
CPCE01D19/02E02D27/14
Inventor 上官兵周欣荣袁卫国曲研
Owner GUANGDONG METALLURGICAL & ARCHITECTURAL DESIGN INST