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Screw-on disposable underwater concrete conduit head

A technology of underwater concrete and catheter heads, which is applied in the field of construction equipment and disposable underwater concrete catheter heads, which can solve the problems of inability to insert, difficult to deal with catheter failures, and inability to pull out catheters, etc., so as to achieve convenient use and processing simple effect

Inactive Publication Date: 2015-04-01
EAST CHINA JIAOTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this underwater concrete construction method also has some problems: the conduit cannot be pulled out during the pouring process, nor can it be inserted arbitrarily during the pouring process; because the conduit is a straight pipe and located in the water, the inner cavity cannot be filled with concrete in advance; especially It is difficult to deal with the failure of the catheter

Method used

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  • Screw-on disposable underwater concrete conduit head
  • Screw-on disposable underwater concrete conduit head
  • Screw-on disposable underwater concrete conduit head

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] When the pipes are seriously blocked during the underwater concrete pouring process, the construction cannot be carried out, or the pipes leak water and air, or the pipes are accidentally pulled out, pull out all the pipes, and immediately adopt the present invention to connect the lower ends of the pipes with special pipes and cones. In order to facilitate the reinsertion of the tapered catheter head into the catheter at the original or appropriate position, fill the catheter with concrete and insert it into the position where the concrete needs to be poured underwater, and then turn the catheter according to the tightening direction of the catheter, so that The pipe head is unscrewed and taken off under the resistance of the blade, and the concrete is poured in the normal way again.

Embodiment 2

[0022] In the process of pouring underwater concrete, it is necessary to add new conduits, and the above method can also be used to achieve the purpose; the lower end of the conduits is connected to a special conduit and a tapered conduit head, and the conduits are filled with concrete and inserted underwater. The position where the conduit pours concrete, and then turn the conduit according to the tightening direction of the conduit, so that the conduit head is unscrewed and removed under the resistance of the blade, and the concrete is poured in the normal way again.

Embodiment 3

[0024] During the underwater concrete pouring process, the conduit needs to move laterally, and a conduit head can be added. After the conduit is filled with concrete not underwater, it is inserted into the water and then the required related work is performed.

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PUM

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Abstract

A screw-on disposable underwater concrete conduit head comprises a section of special conduit (1) and a steel tapered conduit head (2), and the steel tapered conduit head (2) can be in threaded connection with the special conduit. The upper portion of the special conduit is identical to an existing tremie concrete conduit in diameter, and the end of the lower portion of the conduit is provided with an external thread. The tapered conduit head is a steel structure component with a cylindrical upper portion and a conical lower portion, an inner ring of the upper cylindrical structure is provided with an internal thread, matched with the conduit end, of the tapered conduit head, 3-4 steel plate blades are uniformly distributed on the outer periphery of a conduit head cone along a cone bus, and an air hole is drilled at the conical position of the conduit head. The screw-on disposable underwater concrete conduit head solves the problem that underwater concrete pouring quality is affected severely due to the fact that faults in an underwater concrete pouring process occur for a long time or cannot be processed after occurred, and also solves the special process problems of probability that conduits need to be added during construction and the like, and is applicable to tremie concrete.

Description

technical field [0001] The invention relates to a ready-to-use disposable underwater concrete conduit head, which belongs to the technical field of building construction equipment. Background technique [0002] With the rapid development of infrastructure construction in the transportation industry and the continuous acceleration of urbanization, the pile foundation construction of bridge foundations, the bottom cover of caps, the construction of pile foundations in foundations such as high-rise and super high-rise buildings, and the construction of underground diaphragm walls are all facing a challenge. Same challenge, pouring underwater concrete. The biggest problem in underwater concrete pouring is that water leakage, air leakage, pipe drop and other failures should not occur. Once a problem occurs, it will directly lead to disastrous consequences. Even if the problem is found in time, it is difficult to carry out due to the location and construction environment. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D15/06
Inventor 李明华
Owner EAST CHINA JIAOTONG UNIVERSITY
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