Highway tunnel jet fan supporting structure bearing capacity detection device and method

Abstract

The invention relates to a highway tunnel jet fan supporting structure bearing capacity detection device which comprises a counter-force assembly used for being connected with an embedded steel plate of a jet fan. The counter-force assembly is provided with a pressurizing assembly used for abutting against the top wall of a tunnel. The counter-force assembly comprises a plurality of connecting pieces, a supporting rod, two steel wire ropes and a cross beam. The pressurizing assembly comprises a jack. The detection device further comprises a first protection assembly and a second protection assembly. The first protection assembly comprises a mounting base and a U-shaped protection frame detachably connected with the mounting base; an opening of the U-shaped protection frame is vertically upward; the cross beam is located in the U-shaped protection frame; and an elastic supporting piece is arranged at the lower end of the U-shaped protection frame. The second protection assembly comprises a connecting base and a connecting frame detachably connected with the connecting base. The method has the effect of improving the safety coefficient of workers in the detection process.

Description

technical field [0001] The present application relates to the technical field of tunnel detection, in particular to a bearing capacity detection device and detection method of a jet fan support structure in a road tunnel. Background technique [0002] With the development of transportation technology, there are more and more 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. Article 11.2.4 of the "Design Rules for Highway Tunnel Ventilation" JTGTD702-02-2014 stipulates that the structural bearing capacity of the supporting fan should not be less than 15% of the actual static load of the fan. times, the load test of the supporting structure should be done before the fan is installed. [0003] The Chinese patent with the publication number CN111766054A discloses a bearing capacity detection device for a jet fan support structure in a road...

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Problems solved by technology

[0004] In view of the related technologies mentioned above, the inventor believes that during the detection process, the reaction force component and the pressurization component are subjected to a large force, if the connection strength of the embedded plate is not enough, the reaction force component and the pressure component may fall situation, there is a certain security risk

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