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Device and method for detecting bearing capacity of unilateral type tunnel fan support structure

A technology of supporting structure and detection device, which is applied in the testing of machine/structural components, measuring device, elasticity testing, etc., can solve problems such as test method regulations, and achieve the effects of short test time, simple structure and easy production.

Pending Publication Date: 2017-09-01
甘肃省交通科学研究院集团有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the tunnel ventilation now uses jet fans, which are suspended on the top of the tunnel. According to the "Design Rules for Highway Tunnel Ventilation" (JTG / T D70 / 2-02-2014), the tunnel jet fans should be loaded before the fan support structure is installed. Test, the test value is not less than 15 times of the static load of the fan, but there are no regulations on the test method, test instrument and test device

Method used

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  • Device and method for detecting bearing capacity of unilateral type tunnel fan support structure
  • Device and method for detecting bearing capacity of unilateral type tunnel fan support structure
  • Device and method for detecting bearing capacity of unilateral type tunnel fan support structure

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Embodiment Construction

[0032] Introduce technical solution of the present invention in detail below in conjunction with accompanying drawing

[0033] Such as Figure 1-9 As shown, a single-sided tunnel fan support structure bearing capacity testing device includes a Type I test frame and a Type II test frame. The Type I test frame includes an upper beam 1, a lower beam 2, a connecting column 3 and a long screw rod 4. The beam 1 is connected to the lower beam 2 through the connecting column 3, and the upper beam 1 and the lower beam 2 are welded with double-leg channel steel to form a mouth shape. The upper beam is provided with a number of oval through holes 7 penetrating up and down, and high-strength bolts 8 The elliptical through hole 7 is connected to the U-shaped groove on the fan base; the lower beam 2 is in contact with the bottom of the hollow jack and bears the downward reaction force; the Type II test frame includes a beam 11 and a column leg 12, and the beam 11 is composed The channel st...

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Abstract

The invention discloses a device for detecting the bearing capacity of a unilateral type tunnel fan support structure. The device comprises an I-type test rack and an II-type test rack. The I-type test rack comprises an upper cross beam, a lower cross beam, a connecting column and a long screw rod. The II-type test rack comprises a cross beam and a column leg. The I-type test rack and the II-type test rack are arranged in the reversely crosswise manner. By the long screw rod, the I-type test rack, the II-type test rack and a hollow jack are connected as a whole. The cross beam gets in contact with the top of the hollow jack through a reinforcing plate and bears an upward reaction force. The column leg gets in contact with a lining, and transfers the upward reaction force to the lining. According to the technical scheme of the invention, the stress state of the fan support structure can be objectively simulated. The test method is popular and easy to understand. The test device is connected as a whole, so that the number of installation steps is reduced. The test process is simple, and the test time is short. The detection device is manufactured through welding structural steel parts, and coupling elements are all standard parts. The device is simple in structural form and easy to manufacture. During the test, the fan support structure and the lining concrete are protected.

Description

technical field [0001] The invention belongs to the technical field of tunnel detection, and in particular relates to a device and method for detecting the bearing capacity of a unilateral tunnel fan support structure. Background technique [0002] With the development of transportation technology, there are more and more long tunnels and extra-long tunnels, and tunnel ventilation has become an important factor affecting driving comfort. Most of the tunnel ventilation now uses jet fans, which are suspended on the top of the tunnel. According to the "Design Rules for Highway Tunnel Ventilation" (JTG / T D70 / 2-02-2014), the tunnel jet fans should be loaded before the fan support structure is installed. Test, the test value is not less than 15 times the static load of the fan, but there are no regulations on the test method, test instrument, and test device. The invention is a unilateral tunnel fan support structure bearing capacity detection device, which is used in conjuncti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M5/00
CPCG01M5/0075
Inventor 田晖张坤张青龙赵元科王建文胡俊
Owner 甘肃省交通科学研究院集团有限公司
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