A kind of material and construction method used for tunnel seismic isolation

Abstract

The invention discloses a material for tunnel isolation and a construction method of the material. The material is prepared from components including, by weight, coarse aggregates, 70-150kg / m<3> of cement and water, wherein water-cement ratio is between 0.38-0.52; the particle size of the coarse aggregates is 10-22mm, and the coarse aggregates are gravels and rubbles which are uniform in particle. By the arrangement, absorption of a non-sand isolation layer on wave propagation is facilitated, the non-sand isolation layer is arranged between the surrounding rock and the lining of a tunnel to absorb wave that the surrounding rock propagates to the lining, the tunnel structure is protected from being destroyed, and the tunnel can be protected from being destroyed under the action of earthquake wave. The material is reasonable in structure, simple in construction, low in cost and capable of improving isolation and disaster prevention performance between the surrounding rock and the lining of the tunnel, and a traditional construction method is not changed.

Description

technical field [0001] The invention relates to the construction field, in particular to a material used for seismic isolation of tunnels and a construction method thereof. Background technique [0002] With the development of underground space and the continuous expansion of the construction scale of underground structures in our country, various earthquake damages have appeared in underground structures one after another. In recent years, several major earthquakes in our country have caused damage to the structure of the tunnel, of which the damage to the lining accounts for a large part. The shock absorption mode of the surrounding rock lining structure system The existing anti-seismic method is realized by thickening the lining section and reinforcing the whole section. , Improve the structural rigidity and other methods to strengthen the seismic capacity of the structure, use the strength of the material and the plastic deformation capacity of the structural components...

AI Technical Summary

Problems solved by technology

However, the more materials used in the structure, the greater the rigidity and quality of the structure, the greater the earthquake effect, thus forming a vicious circle, which is neither economical nor safe. Practice has proved that the cost of this design is very high of

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