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A shield segment erosion test device under the coupled action of chloride salt environment and load

A technology of shield segment and erosion test, which is applied in the direction of measuring device, applying stable tension/pressure to test material strength, weather resistance/light resistance/corrosion resistance, etc., and can solve problems such as one-sided one-dimensional erosion of chloride salt

Active Publication Date: 2015-08-05
CENT SOUTH UNIV
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  • Abstract
  • Description
  • 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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  • A shield segment erosion test device under the coupled action of chloride salt environment and load
  • A shield segment erosion test device under the coupled action of chloride salt environment and load
  • A shield segment erosion test device under the coupled action of chloride salt environment and load

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Embodiment Construction

[0030] see figure 1 , figure 2 , image 3 , the base beam 1, the base longitudinal beam 2, the bottom wedge-shaped support plate 3 and the bottom fixing groove 6 are welded into one body to form the frame base of the test device, and the frame columns 8 are inserted into the reserved holes at the four corners of the base respectively. And fix it with the lock nut 20. After the rubber water stop plate 4 and the rubber water stop strip 5 are placed in the bottom fixing groove 6, the segment test piece 7 is installed, and the installation error is checked with a level ruler. Fix the bolts 9, install the upper fulcrum 16 on the six segments respectively, and then install the force transmission roller 15 on the upper fulcrum 16, adjust the force point according to the test conditions, and measure the level with a level, and then install the force transmission roller 15 on the force transmission roller 15. Install the force-transmitting longitudinal beam 10 on top, install the fo...

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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 tunnel segment erosion test device under the coupling action of chloride environment and load. Background technique [0002] The current test methods for concrete durability under chloride corrosion environment mainly include immersion method and semi-immersion method. In the artificial environment, when the erosion reaches the set time, take out the test piece or test block, and measure the chloride ion content, so as to carry out research on the corrosion resistance or durability of concrete. Most of these methods are carried out for the material level and under no-load conditions. In fact, once any civil engineering structure is built and operated, it is under a certain load condition, and the structural properties and material properties are also significantly different. Structural properties are evaluated in terms of material properties. [0003] In recent years, with a large number of researches on relevant sci...

Claims

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Application Information

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Patent Type & Authority Patents(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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