Shield tunnel prototype segment carbonization test device
A carbonization test, shield tunneling technology, applied in the direction of material inspection products, etc., to achieve the effect of reducing production costs, good air tightness, and accurate test results
Active Publication Date: 2015-06-24
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology
At present, there is no device capable of conducting carbonization tests on the prototype shield tunnel segment.
Method used
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Embodiment
[0024] Figure 1-3 As shown, a specific embodiment of the present invention is a shield tunnel prototype segment carbonization test device, which consists of:
[0025] A track plate 2 is laid on the track base 1, two longitudinal tracks 3 are arranged on the track plate 2, and a horizontal track cross brace 4 is arranged between the two tracks 3;
[0026] The left part of described track base 1 and track plate 2 is covered under the rectangular test box cover 5; The space is connected by bolts, and the joint is located in the test box cover 5 close to the box cover door 5a;
[0027] The wheel of flat trolley 8 cooperates with described track 3, and the right end of flat trolley 8 links to each other with traction rope 9, and the other end of traction rope 9 walks around the rotating shaft of motor 10 on the right side of track plate 2 and the reversing wheel at the left end of track 3 Link to each other with the left end of flat dolly 8 after 11. The flat trolley 8 is used ...
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The invention relates to a shield tunnel prototype segment carbonization test device, which mainly consists of: a track plate laid on a track base, two tracks longitudinally disposed on the track plate to transport segments, and track transverse braces arranged between the two tracks. The track base and the track plate left part are under the hood of a rectangular test chamber cover. The chamber cover door of the test chamber cover is disposed on the right, each track is formed by two sections in bolted connection, and the joints are close to the chamber cover door in the test chamber cover. Wheels of a flat car fit with the tracks, the right end of the flat car is in connection with a haulage rope, the other end of which bypasses the rotation shaft of a motor at the track plate right part and a reverse wheel at the track left end to connect the left end of the flat car. The test device can perform carbonization test on shield tunnel prototype segments under controllable temperature, humidity and carbon dioxide concentration conditions. The test operation is simple and convenient. The test result is more accurate and reliable, and the test device has the advantages of low manufacturing cost and long service life.
Description
technical field [0001] The invention relates to a shield tunnel prototype segment carbonization device. Background technique [0002] Reinforced concrete structure is a structural form widely used in my country's civil engineering industry. The carbonation of concrete refers to the acid gas CO in the air. 2 It reacts with the alkaline substances in the concrete, which makes the alkalinity of the concrete decrease and the chemical composition of the concrete change the neutralization reaction process. When the neutralization depth reaches or exceeds the critical depth, the passivation film on the steel bar surface in the protective layer will be destroyed; then, under the joint action of water and air, the steel bar will be corroded; the volume expansion caused by corrosion will lead to the corrosion of the steel bar. Longitudinal cracks appear along the length direction, and the protective layer peels off, which in turn reduces the cross-section of the component and reduces...
Claims
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IPC IPC(8): G01N33/38
Inventor 何川徐国文王士民刘四进
Owner SOUTHWEST JIAOTONG UNIV