Load equipment of tunnel lining structural mechanics property simulation test device

A technology of structural mechanics and simulation test, applied in the direction of machine/structural component testing, measuring devices, instruments, etc., to achieve the effect of convenient operation, meeting the test requirements, and strong practicability

Inactive Publication Date: 2015-07-01
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the general indoor tunnel lining test, the test equipment is mainly a model test box, and the lining research is greatly affected by the surrounding rock, and the research error caused by the discrete nature of the surrounding rock has not been well resolved. A device can avoid the simulation error of tunnel surrounding rock to study the mechanical behavior of lining structure

Method used

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  • Load equipment of tunnel lining structural mechanics property simulation test device
  • Load equipment of tunnel lining structural mechanics property simulation test device
  • Load equipment of tunnel lining structural mechanics property simulation test device

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Experimental program
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Embodiment 1

[0018] Such as figure 1 As shown, the loading equipment of the tunnel lining structure mechanical properties simulation test device in this embodiment is composed of a displacement limiting panel 1, a peripheral baffle plate 4, a gasket 2-1, a spring 2-2, a hydraulic jack 2-3, and a connecting support 5 1. The reinforcement steel ring 6-2 and the reinforcement rib 6-1 are connected to form.

[0019] The displacement limiting panel 1 of the present embodiment is a circular steel plate with a diameter of 150 cm and a thickness of 3 cm. A limiting groove is processed on the upper surface of the displacement limiting panel 1. The groove depth of the limiting groove is 3 cm, and the groove width is 6 cm. The shape is the same as the cross-sectional shape of the road tunnel lining 3, that is, the outline of the road tunnel lining 3, which can fix the road tunnel lining 3 in the limit groove, restricting the displacement of the bottom end of the tunnel lining 3 under the surrounding ...

Embodiment 2

[0028]The displacement limiting panel 1 of the present embodiment is a circular steel plate with a diameter of 150 cm and a thickness of 3 cm. A limiting groove is processed on the upper surface of the displacement limiting panel 1. The depth of the limiting groove is 4 cm, and the groove width is 6 cm. The shape is the same as the cross-sectional shape of the railway tunnel lining 3, that is, the outline of the railway tunnel lining 3, which can fix the railway tunnel lining 3 in the limit groove and limit the displacement of the bottom end of the railway tunnel lining 3 under the peripheral force. The edge of the displacement limiting panel 1 is fixedly installed with connecting supports 5 with threaded fasteners. The connecting supports 5 are arranged along the radial direction of the tunnel lining 3 and evenly distributed on the same circumference. The other end of the connecting supports 5 is fixed at the displacement The bottom edge of the peripheral baffle plate 4 on the...

Embodiment 3

[0031] In this embodiment, 18 steel spacers 2-1 are bonded with superglue on the outer wall of the tunnel lining 3, and a cylindrical protrusion is processed at the center of each spacer 2-1. The upper cover is equipped with a high-hardness stainless steel spring 2-2, and the spring 2-2 extends in the normal direction along the outer surface of the railway tunnel lining 3, and the other end of the spring 2-2 is connected with a hydraulic jack 2-3 through a connecting piece. The hydraulic jack 2-3 is also arranged along the normal direction of the outer surface of the railway tunnel lining 3, and the contact area between the gasket 2-1 and the lining is 3.5 times the area of ​​the head of the jack. The cylinder barrel of the hydraulic jack 2-3 is fixedly installed on the inner wall of the peripheral baffle plate 4 through the connecting piece. The peripheral baffle plate 4 of the present embodiment is a ring plate with an inner diameter of 180cm, and its height is 1.5cm. The hyd...

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Abstract

The invention relates to load equipment of a tunnel lining structural mechanics property simulation test device. According to the arrangement, a tunnel lining is arranged on a displacement limitation face plate, a load mechanism is radially arranged on the outer surface of the tunnel lining, and the other end of the load mechanism is fixed on an outer retainer plate; the load mechanism is composed of cushion plates, springs and hydraulic jacks, the cushions are arranged along the outer wall of the tunnel lining, the springs are radially arranged on the outer walls of the cushion plates and allow the cushion plates to be connected with the hydraulic jacks, the hydraulic jacks are normally arranged on the outer surface of the tunnel lining, and cylinders of the hydraulic jacks are fixed on the inner wall of the outer retainer plate; under variable work conditions such as different lining types and thickness and different stress conditions, mechanics property simulation is effectively achieved; during the loading, the numerical control hydraulic jacks are adopted to ensure strength and position of stress applied to the lining, bringing convenience to the following data analysis and research, and accordingly the tunnel lining structural mechanics property changes are effectively simulated.

Description

technical field [0001] The invention belongs to the technical field of tunnel lining indoor model simulation experiment equipment, and in particular relates to a loading device for a test device for simulating the mechanical properties of a tunnel lining structure in a test. Background technique [0002] Indoor model testing has always been an important research method in the field of civil engineering, and the results of using indoor model testing to solve scientific problems in tunnel engineering are also increasing. However, in the study of mechanical properties of tunnel lining structures, it is limited by the initial stress of tunnel surrounding rock The field, tunnel excavation, support, reserved deformation and stress release control are difficult to solve well, and the research results of the mechanical behavior of the tunnel lining structure are always prone to large deviations from the actual situation. However, with the continuous emergence of long, large and deep...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M99/00
Inventor 来弘鹏谢永利刘禹阳康佐宋维龙王军琪赖金星
Owner CHANGAN UNIV
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