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Air-cooled large-diameter shield segment condenser pipe device and construction method

A technology of shield segment and construction method, which is applied in steam/steam condensers, manufacturing tools, auxiliary forming equipment, etc., can solve the problems of segment performance not meeting the design requirements, easy to generate cracks, etc., and achieve high practical value , reduce engineering water use, and have strong practicability

Inactive Publication Date: 2019-12-03
ZHEJIANG UNIV CITY COLLEGE
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  • Summary
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the commonly used treatment measures in engineering are mostly adjusting the concrete mix ratio, adjusting the temperature of concrete raw materials or performing steam curing, but these treatment measures have relatively large limitations, and cannot effectively solve the problem of large-volume shield segment prefabrication. The problem of hydration heat generated during concrete pouring is still prone to cracks, so that the performance of the segments cannot meet the design requirements

Method used

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  • Air-cooled large-diameter shield segment condenser pipe device and construction method
  • Air-cooled large-diameter shield segment condenser pipe device and construction method
  • Air-cooled large-diameter shield segment condenser pipe device and construction method

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Embodiment Construction

[0032] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described below in conjunction with the accompanying drawings.

[0033] refer to Figure 1 to Figure 8 , an air-cooled large-diameter shield segment condensing tube device, the device includes a condensing tube 2 embedded in the shield segment and the first, second, and third temperature sensors for detecting the temperature of concrete; Air inlet 4 and air outlet 5 are respectively provided at the head and tail of the condensing pipe assembly; the air inlet 4 is connected to the water-cooled air conditioner 6;

[0034] Further, the first temperature sensor 9 is set at the middle of the shield segment, the second temperature sensor 8 is set at the side of the shield segment close to the water inlet, and the third temperature sensor 10 is set at the The shield segment is on the side of the water outlet.

[0035] Still further, the first...

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Abstract

The invention discloses an air-cooled large-diameter shield segment condenser pipe device. The device comprises a condenser pipe buried in a shield segment, and first, second and third temperature sensors for detecting the temperature of concrete, the head end and the tail end of the condensation pipe assembly are provided with an air inlet and an air outlet respectively. The air inlet is connected with a water-cooled air conditioner; and the air outlet is connected with an exhaust fan. The invention further provides a construction method of the air-cooled large-diameter shield segment condenser pipe device. According to the method, the problem of hydration heat generated during prefabrication of the large-diameter shield segment is effectively solved, so that the strength of the shield segment meets the design requirement, and the quality of the segment is guaranteed.

Description

technical field [0001] The invention relates to a large-volume concrete maintenance technology, and more specifically, relates to a shield segment condenser tube device and a construction method. Background technique [0002] In recent years, the development of shield tunneling has become more and more mature, and there are more and more large-diameter shield tunnels, and the required segment thickness has also increased. However, temperature cracks often appear during the prefabrication of large-diameter shield segments, because when the large-diameter shield segments are poured with concrete, a large amount of hydration heat will be released inside the concrete during the hardening process of the large-volume concrete, resulting in large temperature changes. The resulting temperature stress and shrinkage stress can easily lead to cracks in the structure. Therefore, how to effectively control the heat of hydration inside the concrete and avoid the occurrence of temperature...

Claims

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Application Information

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IPC IPC(8): B28B1/04B28B11/24B28B17/00B28B23/00B28B23/02F28B1/06
CPCB28B1/045B28B11/245B28B17/00B28B17/0081B28B23/00B28B23/02F28B1/06
Inventor 丁智杭致远张霄
Owner ZHEJIANG UNIV CITY COLLEGE
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