A visual test model and method considering the influence of seepage loading on rail transit
A rail transit and test model technology, which is applied in the direction of basic structure tests, buildings, instruments, etc., can solve the problems of invisible displacement changes in tunnels and soil fields, and achieve the effects of convenient observation, simple transformation, and convenient disassembly
Active Publication Date: 2021-02-12
TONGJI UNIV
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Problems solved by technology
[0009] The purpose of the present invention is to overcome above-mentioned insufficiency and defect, has solved the difficult problem that building excavation, new construction or rail line are invisible to the displacement change of adjacent rail transit tunnel and soil field, proposes a kind of consideration that the loading of seepage field affects adjacent rail transit Influenced visualization test model and method to achieve the purpose of model test visualization
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[0045] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0046] see Figure 1-4 , in this embodiment, the visual test model considering the impact of seepage loading on rail traffic includes a model box, a soil simulation system, a rail traffic model, a load simulation system, a seepage field system, and a CT measurement system. The soil simulation system is filled in the model box. The rail transit model is placed in the model box and surrounded by the soil simulation system. Set the small iron ball 6.9 below the rail transit model. The load simulation system is used to apply top-down loads to the soil simulation sys...
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Abstract
The invention discloses a visual test model and method for considering the influence of seepage loading on rail traffic. A model box is filled with a soil texture simulation system. A rail traffic model is arranged in the model box and is surrounded and covered by the soil texture simulation system. A plurality of iron balls are arranged below the rail traffic model. A load simulation system is used for applying a load to the soil texture simulation system in the model box from top to bottom. A seepage field system is used for filling the model box with a liquid simulation seepage field. A CTmeasuring system is used for scanning the model box, the position change of the iron balls in the soil texture simulation system is identified when the model box is under the action of the load simulation system and the seepage field system, and the influence on the rail traffic model and the change of a soil body displacement field under dynamic and static loading of the seepage field are analyzed. The visual test model and method for the influence of loading on safe operation of near rail traffic under the seepage field are achieved, the device is simple, operation is convenient, and economic feasibility is high.
Description
technical field [0001] The invention designs the field of civil engineering visualization, and specifically relates to a visualization test model and method that considers the impact of seepage field loading on adjacent rail transit. Background technique [0002] With the rapid development of urban rail transit and the improvement of underground space development technology, the construction of urban subways has led to an upsurge in real estate development along the line. Great threat. In the existing technology, finite element software is often used for numerical simulation and actual engineering monitoring. Due to the complexity of the soil, it is difficult for finite element software to perform accurate simulations. The actual engineering monitoring is costly and time-consuming, and is a The irreversible process, that is, if the excavation of the foundation pit leads to the uplift and deformation of the subway tunnel or the subsidence of the surrounding soil by the high-...
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IPC IPC(8): G01N23/046E02D33/00
CPCE02D33/00
Inventor 王长丹李柱雄王炳龙周顺华陈凯祥周伟散骞骞
Owner TONGJI UNIV