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Construction method of box girder reserved anchor cable hole

A construction method and anchor cable hole technology, applied in bridges, bridge materials, bridge construction, etc., can solve the problems of high cost of reserved anchor cable holes, poor hole forming effect, etc., and meet the requirements of reducing compressive strength and construction costs The effect of reducing and pore-forming quality assurance

Inactive Publication Date: 2017-11-24
CHINA RAILWAY SIXTH GRP CO LTD +1
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AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a construction method for reserved anchor cable holes in box girders, so as to solve the technical problems of high cost and poor hole forming effect of reserved anchor cable holes in the box girder pouring existing in the prior art

Method used

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Embodiment Construction

[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0020] It is to be understood that the terms "length", "width", "top", "bottom", "front", "rear", "left", "right", "vertical", "horizontal", "top" , "bottom", "inner", "outer" and other indicated orientations or positional relationships are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, or in a specific orientation. construction and operation, therefore, should not be construed as limiting the invention.

[0021] A construction method fo...

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Abstract

The invention provides a construction method for reserved anchor cable holes of a box girder, which belongs to the technical field of box girder construction. The present invention comprises the following steps: A. closing one end of the extraction rod; B. inserting the extraction rod into the bellows; C. installing the bellows with the extraction rod in the box girder D. Inflate the extraction rod from the unclosed other end of the extraction rod, and when inflated to the specified air pressure, close the other end of the extraction rod; E. Carry out box girder Concrete pouring; F, after the box girder concrete is formed, deflate the extraction rod; G, pull out the extraction rod. The method provided by the invention can not only reduce the demand for the quality of raw materials in construction, but also reduce the required labor without affecting other construction procedures, so that the construction cost is greatly reduced, and the hole-forming quality of the reserved anchor cable holes is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of box girder construction, and more specifically relates to a construction method for reserved anchor cable holes of a box girder. Background technique [0002] The hole quality of the anchor cable hole of the prestressed anchor cable is an important link to determine the tension effect of the anchor cable and even the quality of the box girder when the box girder is poured. The existing method of reserving the anchor cable hole is mainly the method of buried pipe . Due to the large hole diameter of the anchor cable, the compression resistance of ordinary pipes is poor, and it is easy to collapse the hole during pouring, so steel pipes are generally used, but the pipes used for buried pipes are all disposable, the cost of steel pipes is high, and the distance between steel pipes and concrete Poor binding. [0003] Corrugated pipe refers to the pipe with ring-shaped protrusions on the outside. Due to the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00E01D101/28E01D2/04
CPCE01D21/00E01D2/04E01D2101/28
Inventor 王长海路亮蔡忠泽付书锋薛志钢张伟王毅赵楠董会川王军赵建民
Owner CHINA RAILWAY SIXTH GRP CO LTD
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