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Prefabricated comprehensive pipe gallery tensioning method

A comprehensive pipe gallery and tensioning technology, applied in water conservancy projects, artificial islands, underwater structures, etc., can solve the problem that there is no way to ensure the compression of the two pipe gallery waterstops, and the sealing effect of the overall prefabricated pipe gallery cannot be ensured, etc. problem, to the effect of reducing the likelihood of cracks

Pending Publication Date: 2019-04-02
上海城建预制构件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, according to the on-site construction effect, the traditional assembly and tensioning method cannot ensure the airtight effect of the overall prefabricated pipe gallery, and there is no way to ensure that the waterstop between the two pipe galleries is compressed

Method used

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  • Prefabricated comprehensive pipe gallery tensioning method
  • Prefabricated comprehensive pipe gallery tensioning method
  • Prefabricated comprehensive pipe gallery tensioning method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0022] Embodiment: The prefabricated comprehensive pipe gallery tensioning method in this embodiment is used to compress the waterproof components between adjacent pipe gallery segments, and the anchor points are arranged at different positions of the two-way corbels 6 to avoid tensioning the pipes. When the corridor section is 16, the tension force is transferred to the pipe gallery section 1 and the pipe gallery section 2 that have been stretched and are close to each other; thus avoiding that the pipe gallery section 1 and the pipe gallery section 2 bear more than the design value The compression force is thus crushed, and at the same time, the pipe gallery section 16 is moved closer to the pipe gallery section 2, and the pipe gallery section 17 is closely attached to the pipe gallery section 16 by the same method; The step of pulling and then permanently prestressing and tensioning ensures that the waterstop as a waterproof component is always in a compressed state to ensur...

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Abstract

The invention relates to the technical field of prefabricated structures, in particular to a prefabricated comprehensive pipe gallery tensioning method. The prefabricated comprehensive pipe gallery tensioning method is characterized by comprising the steps that a plurality of pipe gallery sections are connected and compressed through prestressed steel bars, a jack and a two-way bracket are used for conducting section-by-section preliminary prestress tensioning on the multiplepipe gallery sections until allpipe gallery sections are tensioned, and thus the multiple pipe gallery sections are mutually spliced and fixed and form a continuous pipe gallery; permanent prestressed tensioning is conducted after completion of preliminary prestressed tensioning, and initial prestressing force is unloaded after completion of the permanent prestressed tensioning. The prefabricated comprehensive pipe gallery tensioning method has the advantages that preliminary prestressed tensioning of the latter pipe gallery section cannot affect the already pipe gallery sections; waterproof components between the pipe gallery sections are always in a compressed state, and the pipe gallery sections are prevented from being crushed while the waterproof sealing effect of the pipe gallery is ensured; and the possibility of cracks in the assembly process of the pipe gallery sections is lowered.

Description

technical field [0001] The invention relates to the technical field of prefabricated structures, in particular to a tensioning method for a prefabricated comprehensive pipe gallery. Background technique [0002] At present, the commonly used assembly method of the overall prefabricated comprehensive pipe gallery is to simply make a cushion layer on the excavated road surface, then put the prefabricated pipe gallery on the designated position, use the hand-held gourd method to attach the pipe gallery together, and then use permanent The prestressed steel beam tunnel is set on the roof and bottom of the pipe gallery, and then the multi-section pipe gallery is directly subjected to permanent prestressed tension. However, according to the on-site construction effect, the traditional assembly and tensioning method cannot ensure the airtight effect of the overall prefabricated pipe gallery, and there is no way to ensure that the waterstop between the two sections of the pipe galle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D29/045E02D29/16E02D31/02
CPCE02D29/10E02D29/16E02D31/025E02D2250/0046
Inventor 王洪新班笑徐波王洪强郭佳张立田培云赵亮
Owner 上海城建预制构件有限公司
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