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Waterproofing method for stress monitoring cable joints for reinforced concrete segments

A reinforced concrete pipe and reinforced concrete technology, applied in the direction of cable terminals, can solve the problems of twisted pair wire exposure in the cable, poor reliability, and affecting the test effect of the stress state of the segment, so as to avoid abnormalities or even missing, and improve the test performance. effect of effect

Active Publication Date: 2012-09-26
CHINA RAILWAY TUNNEL GROUP CO LTD
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AI Technical Summary

Problems solved by technology

[0002] Reinforced concrete segment is a prefabricated component made of arc-shaped plate ribs made of reinforced concrete, steel, cast iron or other materials in the factory. During the embedding process of the reinforced concrete segment monitoring element, the monitoring element is usually The cable is truncated, resulting in the exposure of the twisted pair in the cable. During the steam curing of the segmental concrete and the curing of the pool, the infiltration of water vapor and the direct immersion of the cable joint by the water body will affect the normal performance of the embedded monitoring components.
The current common method for waterproofing the cable joints of monitoring components is to wrap the cable joints with waterproof tape layer by layer to prevent water from entering the interior of the cables from the joints. The force monitoring components cannot be used normally, making the collected monitoring data abnormal or even missing, thus affecting the test effect of the force state of the segment

Method used

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  • Waterproofing method for stress monitoring cable joints for reinforced concrete segments
  • Waterproofing method for stress monitoring cable joints for reinforced concrete segments
  • Waterproofing method for stress monitoring cable joints for reinforced concrete segments

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Embodiment Construction

[0017] The present invention is described in conjunction with accompanying drawing and specific embodiment:

[0018] Such as Figure 1 to Figure 3 As shown, a method for waterproofing the cable joints of reinforced concrete segments under force monitoring, the specific steps are as follows: after the reinforced concrete segment reinforcement cage is put into the mould, before the concrete is poured, the steel bar gauge 1, the earth pressure gauge 2, the pore water The pressure gauge 3 forms the cable 8 of the monitoring element; bind the cable 8 of the monitoring element along the steel bar, cut off the reserved length and mark it well, and seal the cable 8 joint of the monitoring element to achieve preliminary waterproofing of the cable 8 joint The cable 8 connector passes through the pre-made hole on the plastic casing 7 of the grouting hole of the embedded part, stores the reserved cable 8 in the grouting hole 4, and seals the plastic casing 7 and the grouting hole with wat...

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Abstract

The invention belongs to the technology of stress testing for reinforced concrete segment structures in shield tunnel engineering, and discloses a waterproofing method for stress monitoring cable joints for reinforced concrete segments. The waterproofing method includes using bars containing hot melt adhesive (9) to realize a sealing and waterproofing effect for the joints of monitoring element cables (8); storing the cables (8) preserved by monitoring elements in grouting holes (4); and sealing the grouting holes (4) by plastic plates (5) and silicon sealant. By the aid of the double-effect waterproofing method for the cables (8), waterproofing of the stress monitoring element for the reinforced concrete segments is successfully realized, and normal usage of all the stress monitoring elements is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of stress testing of reinforced concrete segment structures in shield tunneling engineering, and mainly relates to a method for waterproofing cable joints used for monitoring the stress of reinforced concrete segments. Background technique [0002] Reinforced concrete segment is a prefabricated component made of arc-shaped plate ribs made of reinforced concrete, steel, cast iron or other materials in the factory. During the embedding process of the reinforced concrete segment monitoring element, the monitoring element is usually The cable is cut off, resulting in the exposure of the twisted pair in the cable. During the steam curing of the segment concrete and the curing of the pool, the infiltration of water vapor and the direct immersion of the cable joint by the water body will affect the normal performance of the embedded monitoring components. The current common method for waterproofing the cable joints...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G15/04
Inventor 刘洪震洪开荣李治国焦雷路耀邦邹翀李振李沿宗李文杰
Owner CHINA RAILWAY TUNNEL GROUP CO LTD
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