Pre-buried groove channel

Abstract

The invention relates to a pre-buried groove channel. The pre-buried groove channel comprises a groove body, anchor rods and filling strips; the groove body comprises groove channels and T-shaped bolts; the anchor rods are uniformly distributed on the top ends of the groove channels; the filling strips are arranged inside the groove channels; the groove channels are arc C-shaped steel members withdownward openings; folding edges extend inwards from the two sides of the bottom ends of the groove channels; the folding edges are right angle folding edges, and form the parallel notches of the groove channels; the inner sides of the folding edges are provided with sawteeth; the tooth spacing of the sawteeth is 3 mm; punching holes are uniformly distributed in the top ends of the groove channels; the punching holes are matched with the anchor rods; the anchor rods are placed in the punching holes; the filling strips are matched with the groove channels; the filling strips are polyethylene foam strips and are charged into the groove channels; EV foam integrated tape with the width being 30 mm is arranged at the position of each of the parallel notches of the groove channels; gaps are left between the polyethylene foam strips and the EV foam integrated tape; and one ends of the T-shaped bolts are placed in the groove channels and are in occlusion with the sawteeth on the folding edges. The pre-buried groove channel according to the invention is simple in structure, convenient and fast to install and good in fatigue resistance and bearing capacity.

Description

technical field [0001] The invention relates to a pre-buried channel for fixed installation in a tunnel, belonging to the technical field of tunnel accessories. Background technique [0002] To fix the structural support in the tunnel, the traditional method in the past is post-planting anchor bolts. The method is: drill holes in the tunnel lining to plant bolts and fill them with cement; or use tunnel lining to drill holes and fill chemical glue to plant anchor bolts. In the method of planting anchor bolts, holes must be drilled on the tunnel lining, which will cause certain damage to the tunnel lining, and the degree of bonding between the filler and the concrete is far less than that of the overall concrete structure. The force has a great influence on the tunnel lining, the fire resistance of chemical anchors is poor, and the construction is inconvenient and the cost is high. Due to the many defects of post-planted anchors; now, pre-buried channels are generally used ins...

AI Technical Summary

Problems solved by technology

[0004] Usually, in the pre-embedded channel in the shield tunnel, due to the large displacement during the pre-embedding process, the solidified channel is quite different from the design size of the drawing, the positioning accuracy is low, and the embedded speed is slow; in addition, The filling materials used in the channels do not meet the environmental protection standards. At present, the anti-fatigue performance of the domestically produced embedded channels is average, and many of them do not meet the requirements. Therefore, how to solve the above problems is what those skilled in the art should study

Images