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Shield segment erosion test device under chlorine salt environment and load coupling effects

A shield tunneling and erosion test technology, which is applied in measuring devices, using stable tension/pressure to test material strength, weather resistance/light resistance/corrosion resistance, etc., can solve problems such as one-dimensional corrosion of chloride salts

Active Publication Date: 2014-01-08
CENT SOUTH UNIV
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

Solve the test problem of one-dimensional one-dimensional erosion of chloride salt on shield tunnel segment under bias load

Method used

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  • Shield segment erosion test device under chlorine salt environment and load coupling effects
  • Shield segment erosion test device under chlorine salt environment and load coupling effects
  • Shield segment erosion test device under chlorine salt environment and load coupling effects

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Experimental program
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Embodiment Construction

[0030] see figure 1 , figure 2 , image 3 , the base beam 1, the base beam 2, the bottom wedge-shaped support plate 3 and the bottom fixing groove 6 are welded together to form the frame base of the test device, and the frame columns 8 are respectively inserted into the reserved holes at the four corners of the base, and used The lock nut 20 is fixed, and the rubber water stop plate 4 and the rubber water stop strip 5 are placed in the bottom fixing groove 6, and then the segment test piece 7 is installed, and the installation error is checked with a level gauge. 9 fixed, install the upper fulcrum 16 respectively on the six segments, then install the force transmission roller 15 on the upper fulcrum 16, adjust the stress point according to the test conditions, measure the level with a leveling rod, and then place the force transmission roller 15 on the upper fulcrum 16. Install the force transmission longitudinal beam 10, install the force transmission beam 11 through the f...

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Abstract

The invention relates to a shield segment erosion test device under chlorine salt environment and load coupling effects, and the device comprises an artificial environment simulation test system, a static force loading system and a test system. According to the device, shield segment eccentric compression mechanics characteristics are realized by applying different loads by self-anchored mechanics conversion, and the actual occurrence environment of a shield tunnel can be simulated by single-sided one-dimensional erosion by use of a chlorine salt solution, so that chloride ion invasion and diffusion processes in an operation process of the shield tunnel segment can be actually simulated for studying shield tunnel segment concrete durability evolutionary mechanism under the chlorine salt environment and load coupling effects and forecasting lifetime. The test problem of single-sided one-dimensional erosion by use of the chlorine salt solution under a bias load can be solved.

Description

technical field [0001] The invention relates to a shield segment erosion test device under the coupling action of chloride salt environment and load. Background technique [0002] The current test methods for the durability of concrete under chloride-salt corrosion environments mainly include the immersion method and the half-immersion method. In the artificial environment, when the corrosion reaches the set time, take out the test piece or test block, and measure the chloride ion content, so as to conduct research on the corrosion resistance or durability of concrete. Most of these methods are carried out for material layers and under no-load conditions. In fact, once any civil engineering structure is built and operated, it is under a certain load condition, and there are significant differences between structural properties and material properties. Structural properties can be evaluated based on material properties. [0003] In recent years, with a large number of resea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/12G01N17/00
Inventor 雷明锋彭立敏施成华沈佳佳
Owner CENT SOUTH UNIV
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