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A method to improve the fire resistance of reinforced concrete beams strengthened by embedded composite bars

A reinforced concrete beam and embedded technology, which is applied in fire protection, construction, building maintenance, etc., can solve the problems of insufficient fire resistance of reinforced concrete beams reinforced by embedded composite bars, so as to avoid high loss of materials, good high temperature resistance, and energy saving The effect of material usage

Active Publication Date: 2021-01-26
SOUTHEAST UNIV
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Problems solved by technology

[0004] The purpose of the present invention is a method for improving the fire resistance of reinforced concrete beams reinforced with embedded composite bars, so as to solve the problem of insufficient fire resistance of reinforced concrete beams reinforced with embedded composite bars and save material consumption

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  • A method to improve the fire resistance of reinforced concrete beams strengthened by embedded composite bars
  • A method to improve the fire resistance of reinforced concrete beams strengthened by embedded composite bars
  • A method to improve the fire resistance of reinforced concrete beams strengthened by embedded composite bars

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Embodiment Construction

[0032] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0033] A method for improving the fire resistance of reinforced concrete beams reinforced with composite bars embedded in an embodiment of the present invention includes the following steps:

[0034] Step 10) Grooving is made in the tensile zone at the bottom of the reinforced concrete beam to form a channel.

[0035] Step 20) Fill the channel with organic rebar glue and inorganic fiber mortar to form a bonding material layer; wherein, the organic rebar glue is located at both ends of the channel, the inorganic fiber mortar is located in the middle of the channel, and the organic rebar is located at the middle of the channel. There is a gap between the organic rebar glue layer formed by the glue and the inorganic fiber mortar layer formed by the inorganic fiber mortar. Preferably, the gap is 5-15 cm.

[0036] Step 30) Put the composite ten...

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Abstract

The invention discloses a method for improving the fire resistance of reinforced concrete beams reinforced with embedded composite bars to solve the problem of insufficient fire resistance of reinforced concrete beams reinforced with embedded composite bars. The method includes: step 10) opening a groove in the tension area at the bottom of the reinforced concrete beam to form a channel; step 20) filling the channel with organic reinforcement glue and inorganic fiber mortar; step 30) placing composite bars into In the channel; Step 40) After the organic rebar glue is solidified, fill the gap between the organic rebar glue layer and the inorganic fiber mortar layer with inorganic fiber mortar; Step 50) Provide a pipe with radially extending openings on the wall surface Inorganic fiber mortar is filled in the body, the inorganic fiber mortar in the pipe body is in contact with the inorganic fiber mortar in the channel, and the pipe body is removed after the inorganic fiber mortar in the pipe body is hardened; Step 60) Set U-shaped steel wire mesh mortar at both ends of the channel layer, the steel mesh mortar layer covers the organic rebar glue layer.

Description

technical field [0001] The invention relates to the field of civil engineering, in particular to a method for improving the fire resistance of reinforced concrete beams reinforced with embedded composite bars. Background technique [0002] The embedded reinforcement method of composite reinforcement is an improved reinforcement method proposed in recent years. This method is to embed the composite tendons into the pre-opened grooves on the surface of the structure, so that the bonding between the composite tendons and the structure is well guaranteed, thereby more effectively enhancing the structural bearing capacity and performance. At present, in the field of actual engineering at home and abroad, the embedded reinforcement technology of composite reinforcement has been successfully applied to the reinforcement of some bridge decks, silos, masonry structures and other structures, showing considerable reinforcement effects. [0003] However, this technology has not been wi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04G23/02E04B1/94
Inventor 朱虹李婷沈佳辉
Owner SOUTHEAST UNIV
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