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A damping tunnel segment

A technology of tunnel segment and cementitious material, applied in tunnels, tunnel lining, solid waste management, etc., can solve the problem of little research on vibration reduction of tunnel structures

Active Publication Date: 2022-05-20
CHINA RAILWAY ENG CONSULTING GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The research on the above-mentioned tunnel vibration reduction measures mainly focuses on the track slab, track components, backing plate and other parts, but there are few researches on the vibration reduction of the tunnel structure itself

Method used

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  • A damping tunnel segment
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Embodiment 1

[0027] This embodiment provides a damping tunnel segment, the tunnel segment includes coarse aggregate, fine aggregate and cementitious material, the mass ratio of the coarse aggregate is 60%, and the fine aggregate ratio is 20% %, the cementitious material accounts for 20%; the coarse aggregate has a density of 3000kg / m 3 Iron ore slag, the fine aggregate is a density of 1700kg / m 3 water sand, the density of the cementitious material is 1000kg / m 3 .

[0028] The cementitious material includes the following materials in parts by weight: 1 part of oleic acid, 2 parts of FDN water reducer, 40 parts of stone powder, 4 parts of mica powder, 1 part of diatomaceous earth, 2 parts of composite honeycomb material, and 3 parts of iron powder , 3 parts of precipitated barium sulfate, 1 part of stearic acid.

[0029] The two sides of the tunnel segment are respectively provided with a first connecting bolt hole 3 and a second connecting bolt hole 4, the first connecting bolt hole 3 an...

Embodiment 2

[0031] This embodiment provides a damping tunnel segment, the tunnel segment includes coarse aggregate, fine aggregate and cementitious material, the mass proportion of the coarse aggregate is 80%, and the proportion of fine aggregate is 10%, the proportion of cementitious material is 10%; the coarse aggregate has a density of 3500kg / m 3 Copper ore slag, the fine aggregate is 1600kg / m 3 machine-made sand, the density of the cementitious material is 300kg / m 3 .

[0032] The cementitious material includes the following materials in parts by weight: 2 parts of oleic acid, 1 part of FDN water reducer, 30 parts of copper ore slag, 2 parts of mica powder, 5 parts of diatomaceous earth, 8 parts of composite honeycomb material, iron powder 1 part, 1 part of precipitated barium sulfate, 0.2 part of stearic acid.

Embodiment 3

[0034] This embodiment provides a damping tunnel segment, the tunnel segment includes coarse aggregate, fine aggregate and cementitious material, the mass proportion of the coarse aggregate is 60%, and the proportion of fine aggregate is 10%, the proportion of cementitious material is 30%; the coarse aggregate has a density of 3800kg / m 3 Iron ore slag, the fine aggregate is a density of 1650kg / m 3 water sand, the density of the cementitious material is 1500kg / m 3 .

[0035] The cementitious material includes the following materials in parts by weight: 1.5 parts of oleic acid, 1.5 parts of FDN water reducer, 35 parts of stone powder, 3 parts of mica powder, 3 parts of diatomite, 5 parts of composite honeycomb material, and 2 parts of iron powder , 2 parts of precipitated barium sulfate, 0.6 parts of stearic acid.

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Abstract

The invention relates to the technical field of construction, in particular to a damping tunnel segment. The tunnel segment includes coarse aggregate, fine aggregate and cementitious material, the mass proportion of the coarse aggregate is 60-80%, the proportion of fine aggregate is 10-20%, and the proportion of cementitious material is 10%. ‑30%; said coarse aggregate has a density greater than 3000 kg / m 3 , the density of the fine aggregate is 1600-1700kg / m 3 , the density of the gelled material is 300-1500kg / m 3 . The tunnel segment concrete of the present invention has a high density of coarse aggregate and a low density of cementitious material, so that the coarse aggregate and cementitious material in the segment form a large density difference to form a periodic structure together. When the vibration wave generated by the train running passes through the concrete segment, it will be reflected and refracted when encountering high-density coarse aggregate, while the segment with periodic structure makes the vibration wave reflect and refract continuously, thus greatly consuming the vibration wave. Thereby, the effect of vibration damping and vibration isolation is achieved.

Description

technical field [0001] The invention relates to the technical field of construction, in particular to a damping tunnel segment. Background technique [0002] As my country's high-speed railway enters the city, the high-speed railway generally enters the urban building-intensive area through the formation of tunnels. The vibration and noise generated by the operation of high-speed railway trains will have an impact on the buildings above and on both sides of the tunnel, the living environment, and the working environment. In addition, the operating vibration and noise of urban rail transit will also have an impact on the surrounding environment. Using various means such as track and structure to reduce the vibration and noise of train operation is of great significance for improving the living and working environment along high-speed rail and subway lines, and provides an effective way to reduce vibration and noise for high-speed railway and subway construction in dense urban...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/08C04B28/00C04B38/08C04B111/40C04B111/56
CPCE21D11/08C04B28/00C04B2111/56C04B2111/40C04B24/08C04B14/02C04B14/20C04B14/08C04B14/34C04B14/368C04B24/085C04B18/141C04B14/06C04B2103/302C04B38/08C04B2103/0068C04B18/144Y02W30/91
Inventor 刘建友岳岭刘方吕刚王婷王杨彭斌
Owner CHINA RAILWAY ENG CONSULTING GRP CO LTD
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