Construction method for improving shock resistance of tunnel

Abstract

The invention relates to a construction method for improving the shock resistance of a tunnel. The construction method for improving the shock resistance of the tunnel comprises the following construction steps that (1) a surrounding rock area needing to be reinforced within a tunnel construction range is determined; (2) the surrounding rock area needing to be reinforced is subjected to grouting reinforcement, and the surface of surrounding rock is repaired through an anti-seismic damping material; (3) primary supporting structure construction is carried out; (4) an inverted arch structure of the tunnel is constructed; (5) a plurality of anti-seismic devices are arranged on the constructed primary supporting structure; (6) secondary supporting structure construction is carried out, a gap is reserved between a secondary supporting structure and a primary supporting structure in the radial direction of the tunnel, and the secondary supporting structure is composed of a steel truss support and a composite structural plate; and (7) an anti-seismic material is injected into the gap, so that the whole gap is filled with the anti-seismic material. According to the construction method for improving the shock resistance of the tunnel, various anti-seismic and shock-absorbing measures are combined to achieve a good anti-seismic effect, the tunnel supporting problem is fundamentally solved, and the anti-seismic capacity of the tunnel is improved.

Description

technical field [0001] The invention relates to the technical field of anti-seismic construction of tunnel engineering, in particular to a construction method for improving the anti-seismic capability of tunnels. Background technique [0002] In recent years, with the increase in the number of underground structures and the frequent occurrence of strong earthquakes around the world, the anti-seismic issue of underground structures has been paid more and more attention by countries all over the world. In some large tunnel projects, it is inevitable to pass through active fault zones or high-intensity earthquake zones. When a tunnel passes through an active fault zone or a high-intensity earthquake zone, the earthquake will cause the tunnel to undergo more severe shearing, causing large-scale damage to the tunnel that is difficult to repair, causing great casualties and losses, and making traffic difficult. Restoring in time also can't carry out anti-earthquake disaster relief...

AI Technical Summary

Problems solved by technology

At present, when constructing in active fault zones or high-intensity earthquake areas, the defects of the support forms used in the prior art mainly include that the seismic performance of the lining structure is not greatly improved, and the influence of fault displacement displacement on the internal force of the structure cannot be well resolved. , the tunnel expansion section increases the sudden change of the structural shape, the stiffness of the surrounding rock and the structure does not match, the structure is prone to damage or collapse when a strong earthquake occurs, and there is a high construction safety risk