Model test device for simulating long-term land subsidence in highly-dense area under complex vibration environment

A dense area and ground technology, applied in vibration testing, measuring devices, testing of machine/structural components, etc., can solve the problems of no long-term ground settlement research, no consideration of the impact of high-density building groups, and no consideration of karst strata in stratum simulation.

Active Publication Date: 2018-11-16
ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology

This patent is mainly based on the two-dimensional finite element model to study the dynamic load of subway trains and the long-term settlement of tunnels. It does not consider the influence of karst strata in the stratum simulation, does not in

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  • Model test device for simulating long-term land subsidence in highly-dense area under complex vibration environment
  • Model test device for simulating long-term land subsidence in highly-dense area under complex vibration environment
  • Model test device for simulating long-term land subsidence in highly-dense area under complex vibration environment

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Embodiment

[0047] Such as Figure 1 to Figure 11 As shown, a long-term ground settlement model test device for simulating complex vibration environments in high-density areas, including: model boxes, strata systems, tunnel systems, high-speed railway foundation systems, excitation systems, sensor systems, dense ground buildings, high-speed rotating system, cave system.

[0048] The stratum system 2 includes: a first soil layer 201 and a second soil layer 202 .

[0049] The tunnel system 3 includes: a first tunnel 301 and a second tunnel 302 .

[0050] The high-speed railway foundation system includes: a first high-speed railway foundation 401 and a second high-speed railway foundation 402 .

[0051] The excitation system includes: a first low-frequency exciter 501, a second low-frequency exciter 502, a third low-frequency exciter 503, a fourth low-frequency exciter 504, a first high-frequency exciter 505, and a second high-frequency exciter. Frequency exciter 506, third high frequency...

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Abstract

The invention provides a model test device for simulating the long-term land subsidence in a highly-dense area under a complex vibration environment, and belongs to the technical field of urban underground engineering disaster prevention and reduction and land subsidence geological disasters. The model test device for simulating the long-term land subsidence in a highly-dense area under a complexvibration environment includes a model box, a stratum system, a tunnel system, a high-speed railway roadbed system, a vibration excitation system, a sensing system, a ground dense building group, a high-speed rotating system, and a karst cave system. The device can simulate the long-term land subsidence caused by the joint vibration of subways and high-speed railways in a dense building group area, can accurately simulate the long-term land subsidence under the effect of high-speed rotating centrifugal force in a complex environment, can quantitatively monitor the influence of the reinforcement of existing karst caves over and under an operating tunnel on the long-term land subsidence, and is low in experimental cost and reliable in data.

Description

technical field [0001] The invention belongs to the technical field of urban underground engineering disaster prevention and reduction and land subsidence geological disasters, and in particular relates to a long-term ground subsidence model test device for simulating complex vibration environments in high-density areas. Background technique [0002] In recent years, my country's high-speed railway construction and urban subway construction have developed rapidly, and their operating mileage ranks first in the world. Especially, Shanghai, Hangzhou, Nanjing in the Yangtze River Delta region, and Guangzhou and Shenzhen in the Pearl River Delta region are all soft soil areas. These cities have the most developed productivity, the strongest economic growth, the densest population, and the largest distribution of dense building groups. During the operation of high-speed railways and urban subways, the subsidence of foundation soil caused by the vibration load of trains, and the unf...

Claims

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Application Information

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IPC IPC(8): G01M7/02
CPCG01M7/02G01M7/025
Inventor 邹宝平罗战友胡磊杨建辉刘静娟陶燕丽
Owner ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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