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Watertight device and method of movable rigid boxboard in geotechnical true triaxial test

A true three-axis, leak-proof technology, applied in the direction of applying stable tension/pressure to test the strength of materials, etc., to achieve the effect of simple structure design, high reliability and good safety

Pending Publication Date: 2019-05-14
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Wrapping the sample with a rubber film to prevent water leakage is the most commonly used method at present, such as the scheme disclosed in the patent with the authorized announcement number [CN105092327B], but it is mainly for small-sized samples

Method used

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  • Watertight device and method of movable rigid boxboard in geotechnical true triaxial test
  • Watertight device and method of movable rigid boxboard in geotechnical true triaxial test
  • Watertight device and method of movable rigid boxboard in geotechnical true triaxial test

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Example 1, such as figure 1 As shown, a geotechnical true triaxial test mobile rigid box plate water leakage prevention device includes a soil box structure composed of a bottom plate and a mobile rigid box plate set perpendicular to the bottom plate in sequence. The schematic diagram of the soil box structure is shown in Figure 5 As shown, the adjacent mobile rigid box plates can slide relative to each other. The soil box structure is provided with a flexible sealing frame 2 , a sealing fixing strip 3 , flat head screws 4 and a flexible sealing strip 5 . like figure 1 and Figure 4 As shown, the flexible sealing frame 2 is arranged close to the joint of the adjacent mobile rigid box plate 1 and the joint between the bottom plate and the mobile rigid box plate 1, and the flexible sealing frame 2 is pressed by the sealing and fixing strip 3, and the sealing and fixing strip 3 It is fastened on the rigid box plate 1 by flat head screws 4, and the flexible sealing fram...

Embodiment 2

[0033] Embodiment 2, according to the anti-leakage device described in embodiment 1, specifically during operation, follow the steps below to realize the anti-leakage operation:

[0034] (a) Build the earth box structure by moving the rigid box panels 1, and ensure the tight connection between the rigid box panels;

[0035] (b) A flexible sealing strip 5 is placed inside the movable rigid box plate, and a flexible sealing frame 2 is placed inside the earth box structure;

[0036] (c) Install the sealing and fixing strip 3, fasten the sealing and fixing strip 3 and the flexible sealing frame 2 and the moving rigid box plate 1 by flat head screws 4, and ensure that the sealing and fixing strip 3 applies uniform pressure on the flexible sealing frame 2 to ensure There is sufficient contact force between the flexible sealing frame 2 and the flexible sealing strip and the moving box plate;

[0037] (d) Prepare samples in the soil box structure and carry out relevant tests.

[003...

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Abstract

The invention discloses a watertight device and method of a movable rigid boxboard in a geotechnical true triaxial test. The device comprises a soil box structure, which is composed of a bottom plateand a movable rigid boxboard vertical to the bottom plate in a sequence connection manner; a flexible sealing frame, a sealing and fixing strip, a flat head screw and a flexible sealing strip are arranged in the soil box structure; and the flexible sealing frame is arranged to be appressed to the joint of adjacent movable rigid boxboards and the joint of a bottom plate and the movable rigid boxboard, and pressed through the sealing and fixing strip. In the scheme, the flexible sealing frame, the sealing and fixing strip and the like are specially designed; the device is smart in structural design, low in manufacturing cost and reliable to work; furthermore, two waterproof measures are provided; effective watertightness is realized while the movement condition of the rigid boxboard is not influenced; watertight requirements in the movement process of the rigid boxboard are satisfied; in a test process, the greater the force on the rigid boxboard is, the better the waterproof effect is;the waterproof effect in the soil box under the high pressure action is effectively improved; a whole true triaxial test system is good in running security and high in reliability; and the economic and practical value is obvious.

Description

technical field [0001] The invention relates to the technical field of geotechnical true triaxial test, in particular to a water leakage prevention device and method for the connection of moving rigid box plates in geotechnical true triaxial test, which is suitable for geotechnical true triaxial test. Background technique [0002] Geotechnical true triaxial test system can simulate the mechanical properties of soil under unequal stress in three directions. Compared with conventional triaxial test system, true triaxial test can more reasonably explain the mechanical properties of soil under actual site conditions. In the conventional triaxial test system, the size of the soil sample is usually a cylinder, the stress in the two horizontal directions is equal, and the stress state is σ 1 >σ 2 = σ 3 (σ 1 is the vertical principal stress, σ 2 and σ 3 is the horizontal principal stress). However, in the geotechnical true triaxial test system, the three directions are non-...

Claims

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Application Information

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IPC IPC(8): G01N3/12
Inventor 苏雷凌贤长唐亮许晓潇王志鹏
Owner QINGDAO TECHNOLOGICAL UNIVERSITY