Multi-scale model design method for shield tunnel vibration test bench

A technology of vibration test bench and shield tunnel, which is applied in the field of underground engineering test research, to achieve the effects of simplifying the manufacturing process, easy assembly, and saving manufacturing costs

Inactive Publication Date: 2017-02-22
上海长江隧桥建设发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the shaking table test for studying the response of long tunnels, it is difficult for the tunnel model to fully and finely simulate all the above-mentioned segments and auxiliary structures.

Method used

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  • Multi-scale model design method for shield tunnel vibration test bench
  • Multi-scale model design method for shield tunnel vibration test bench
  • Multi-scale model design method for shield tunnel vibration test bench

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Experimental program
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Embodiment Construction

[0047] The invention provides a multi-scale model design method for a shield tunnel vibration test bench, which is used to establish a multi-scale model of a shield tunnel. The method includes the following steps:

[0048] 1) Establish a refined pipe ring part (SER):

[0049] 11) The pipe ring of the shield tunnel prototype is reduced in proportion to form a lining ring model;

[0050] 12) On the lining ring model that step 11) obtains, cut grooves are set to ensure the equivalent transverse stiffness η of the lining ring model r Consistent with the shield tunnel prototype, the slotted lining ring model is obtained;

[0051] 13) connecting keys and keyholes are set on the grooved lining ring model obtained in step 12), to obtain a splicable grooved lining ring model;

[0052] 14) Assemble the spliceable grooved lining ring model obtained in step 13) to obtain a refined pipe ring part, and the longitudinal equivalent stiffness η of the refined pipe ring part sl Consistent wi...

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Abstract

The invention relates to a multi-scale model design method for a shield tunnel vibration test bench. The method is used for building the multi-scale model of the shield tunnel, and the method comprises the following steps: building a refinement pipe ring part; building an average equivalent pipe section part; and alternately splicing the refinement pipe ring part and the average equivalent pipe section part according to the proportion, and obtaining the multi-scale model of the shield tunnel. Compared with the prior art, the method has the advantages of simplifying the model making process, saving the model making cost, simplifying the model splicing process and accurately reflecting the macroscopic response and detail dynamic response of the shield tunnel.

Description

technical field [0001] The invention relates to the field of underground engineering test research, in particular to a multi-scale model design method for shield tunnel vibration test benches. Background technique [0002] In view of the safety and technical maturity of shield tunneling, the shield tunneling method has been widely used in subway tunnels and cross-river and sea-crossing tunnel projects in recent years. Studies have shown that irreparable damage may occur to underground structures under strong earthquakes, and seismic design is especially important for the design of shield tunnel structures. Through the shield tunnel vibration test rig, quantitative and accurate shaking table test research can provide data support for the seismic design of the tunnel, and the design of the structural model in the test plays a key role in the accuracy of the test data. [0003] However, the structural form of the shield tunnel is very complex, and the number of segments is hug...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M7/02
CPCG01M7/02
Inventor 季倩倩方卫刘小方吴华柒田海洋陈向科左峰冯雷
Owner 上海长江隧桥建设发展有限公司
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