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Construction method of tensioning end of prestressed beam

A technology of prestressed beams and construction methods, which is applied in the direction of construction, building structure, and building material processing, and can solve problems such as reservation of tension ends

Inactive Publication Date: 2014-12-31
CHINA MCC20 GRP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention solves the problem of reservation of the tension end when the prestressed beam is used as a part of the continuous beam, and has a strengthening effect on the structure

Method used

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Embodiment Construction

[0011] Below, the present invention will be further described in conjunction with specific embodiments:

[0012] A kind of prestressed beam tension end construction method is characterized in that, it comprises:

[0013] Step 1: Set up a sinking concrete pit on both sides or one side of the joint between the prestressed beam and the ordinary concrete beam, and reserve reinforcements that meet the specification requirements for overlapping lengths around the pit according to the specifications and spacing required by the design;

[0014] Step 2, pre-embed the prestressed anchor on the side wall of the pit, so that it can be poured together with the concrete structure;

[0015] Step 3: After the concrete strength reaches the design strength, carry out construction according to the technical requirements of prestressed tension construction;

[0016] Step 4, the tensioning is over, and the hole grouting is completed;

[0017] Step 5: Bind and install the reinforcement rese...

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Abstract

The invention relates to a prestressed beam, in particular to a construction method of the prestressed beam. The construction method of a tensioning end of the prestressed beam comprises the following steps: (1) a sunken concrete pit is formed in two sides or one side of a joint place of the prestressed beam and a common concrete beam; (2) a prestressed anchorage device is pre-buried in the side wall of the pit so as to be combined with the concrete structure through pouring; (3) after the concrete strength reaches the design strength, the construction is performed according to the technical requirements of the prestress tension construction; (4) when the tensioning is finished, the duct grouting is finished; and (5) plate reinforcements reserved at the upper part of the pit formed in the step (1) are bound and mounted according to the standard requirements; the concrete is poured; and the reserved pit is fully filled. The construction method solves the reserving problem of the tensioning end of the prestressed beam serving as one part of a continuous beam, and has the reinforcement effect on the structure.

Description

technical field [0001] The invention relates to a prestressed beam, in particular to a construction method of a prestressed beam. Background technique [0002] At present, in the actual construction of the prestressed beam structure, the prestressed tension end is arranged at the end edge of the structure. However, when the prestressed beam is only a part of the continuous beam, the reservation of the tension end is a problem. When this problem was encountered before, the solution was to set a post-cast belt at the end of the beam, and then construct this part of the structure after the construction of the prestressed beam was completed. This construction method seriously damages the main reinforcement of the beam, and adds difficulties to the prestressed tensioning construction because of the small working space. Contents of the invention [0003] The invention aims to overcome the defects of the prior art, and provides a construction method for the tension end of a pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04G21/12
Inventor 张延彬陈航宇张春雷梁峰侯宪伟
Owner CHINA MCC20 GRP CORP
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