Soil sealing and guiding thrust plate for horizontal tunnel lining model testbed board

A model test and thrust plate technology, which is applied in the field of thrust plates for tunnel lining model test research, can solve the problems of uneven force on the upper and lower sides of the surrounding rock, uneven force on the surrounding rock, high cost, etc., and achieve the elimination of frictional resistance, Guarantee the effect of accuracy and uniform force
CN102589972BInactive Publication Date: 2013-11-20SOUTHWEST JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
SOUTHWEST JIAOTONG UNIV
Publication Date
2013-11-20
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The invention provides a soil sealing and guiding thrust plate for a horizontal tunnel lining model testbed board, which belongs to the technical field of civil engineering, wherein the trust plate is simply put on the testbed board, the bottom of the trust plate is stressed by larger friction force which is not uniform at the end and the right end, so the trust plate is caused to be stressed unevenly at the end and the right end, four trust plates are easily form a rhombus structure, so the surrounding rock and the lining model are unevenly stressed, and the measuring result is influenced. In the invention, a concave groove is arranged below the two vertical crossed ribs of the trust plate and is welded on the testbed board, a roller is arranged at the bottom of the concave groove, and the vertical lower end surfaces of the cross ribs are tangential to the roller; and a sliding plate is in an I-shaped beam structure, one end of the sliding plate is arranged in the sliding plate groove of the trust plate and is tangential to the roller in the sliding plate groove. The thrust plate is mainly used for the soil sealing, guiding and trusting tests of the horizontal tunnel lining model testbed board.
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Description

technical field

[0001] The invention belongs to the technical field of civil engineering, in particular to a thrust plate used for tunnel lining model test research. Background technique

[0002] The sealable soil-guiding thrust plate is a key structure in the tunnel lining model test research, which involves whether the horizontal thrust can be applied accurately and parallelly, whether the force inside the surrounding rock is uniform, and whether the force on the lining model is consistent.

[0003] The thrust plate is used to realize the horizontal four-sided loading of the square surrounding rock, and it is necessary to prevent a large amount of spillage of the surrounding rock. Therefore, guiding and sealing soil are the key designs of the thrust plate. There are mainly two types of existing devices, both of which adopt four I-shaped push plates placed on the test bench to form a mouth-shaped structure, and each push plate is horizontally driven by two hydraulic cylinde...

Claims

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