Tunnel steel frame connecting device adapting to two-way deformation

Abstract

The invention discloses a tunnel steel frame connecting device adapting to two-way deformation. The tunnel steel frame connecting device comprises a connecting rod main body, a slotted hole, a through hole, a first thin plate, a spring, a first connecting column, an arc-shaped slotted hole, a solid ball and a second connecting column. Compared with the prior art, the deformation of a steel frame in the axial direction can be adjusted through the deformation of the spring during use, and meanwhile, a part of force can be counteracted by the friction force between rubber and the slotted hole; the deformation limitation of the steel frame in the axial direction is larger than that of a steel frame without the device; the surrounding rock is allowed to have larger deformation without causing instability of the steel frame, and the self-bearing capacity of the surrounding rock can be brought into full play; and by means of the device, the steel frame can have certain deformation capacity in the direction perpendicular to the axis of the steel frame, compared with a common steel frame, stress in the horizontal direction is released to a certain degree, and stress of a secondary lining is reduced.

Description

Technical field [0001] The present invention relates to the field of tunnel steel frame connecting, in particular to the tunnel of the tunnel in the support of the tunnel, in particular, a tunnel steel frame connecting device adapting to two-way deformation. Background technique [0002] In recent years, my country's transportation is rapidly, and the tunnel project is increasing, and the problem of large deformation of the tunnel is increasingly prominent in tunnel construction. At present, it is common measures for tunnels, increasing reserved deformation, and strengthening the support parameters are common measures. These measures have achieved a certain effect on controlling surrounding rock deformation, but the effect is not ideal in some practical projects. Steel support is one of the common support of the tunnel large deformation control. As a rigid support measures, the adaptability of surrounding rock deformation is poor. In order to adapt to the new Austrian concept to ...

AI Technical Summary

Problems solved by technology

Some scholars have carried out the research and development of telescopic steel frames, which allow a certain amount of telescopic deformation in the axial direction, but these telescopic steel frames can only deform in the axial direction

For the side wall and the arch waist, sometimes the horizontal deformation is relatively large, and the above-mentioned retractable steel frame cannot adapt to it.

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