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

A construction method and seismic isolation technology, which are applied to the seismic isolation materials of tunnels and their construction fields, can solve the problems of large seismic action, not necessarily safe, and uneconomical, and achieve the effects of low cost, reasonable structure and simple construction.

Inactive Publication Date: 2018-11-02
LANZHOU UNIVERSITY OF TECHNOLOGY
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  • Description
  • Claims
  • Application Information

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

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[0013] In order to make the objects and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0014] An embodiment of the present invention provides a material for seismic isolation of tunnels, which is prepared from the following components:

[0015] Coarse aggregate, cement 70-150kg / m 3 , water, the water-cement ratio is between 0.38-0.52; the particle size of the coarse aggregate is 10-20mm, and the coarse aggregate is gravel or crushed stone with uniform particles.

[0016] The above-mentioned construction method for a material for tunnel seismic isolation comprises the following steps:

[0017] S1, take by weighing the formula described in claim 1, coarse aggregate, cement and water, after mixing, stir evenly, get mixed raw materi...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00E21D11/10
CPCC04B28/00C04B2111/00724E21D11/10C04B14/02
Inventor 周凤玺曹小林王根强马强甘东彪翟睿智焦欧阳高潇丽郑琦庞宾宾
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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