High-speed railway ballastless track subgrade rising soil test system and test method thereof

A technology for mud-flushing and ballastless track, which is applied in the field of mud-flushing test system for ballastless track subgrade of high-speed railways, and can solve problems such as difficulty in effectively adopting the method

Active Publication Date: 2017-05-31
CENT SOUTH UNIV +2
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  • Abstract
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  • Application Information

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Problems solved by technology

Limited by site conditions and non-interference with normal operations, it is difficult to effectively adopt the field test method

Method used

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  • High-speed railway ballastless track subgrade rising soil test system and test method thereof
  • High-speed railway ballastless track subgrade rising soil test system and test method thereof
  • High-speed railway ballastless track subgrade rising soil test system and test method thereof

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Embodiment 1

[0056] A high-speed railway ballastless track embankment mud pumping test method, including the following test system (see figure 1 ): Specifically including a track-subgrade structure model 1 with a scale of 1:1 to the actual track subgrade to be tested, a high-speed train load simulation loading device 2, a rainwater dripping device 3, and a measurement and observation device 4.

[0057] The track-subgrade structure model 1 is a two-way prestressed reinforced concrete structure (the track-subgrade structure model is a full-scale model of 1:1, and its construction materials and dimensions are the same as the actual track subgrade to be tested), which consists of the following The top includes bed layer 1.1, support layer 1.2 and track plate 1.3 in turn (see Figure 2-Figure 5 ), the thicknesses of the bed 1.1, the support layer 1.2 and the track plate 1.3 are 2700mm, 300mm and 200mm respectively; the bed layer 1.1 includes a lower bed layer with a thickness of 2300mm and an u...

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Abstract

The invention provides a high-speed railway ballastless track subgrade rising soil test system, which comprises a track-subgrade structure model, a high-speed train load model loading device, a rainwater drip immersion device and a measurement and observation device, wherein the track-subgrade structure model is a two-way prestress reinforced concrete structure; the high-speed train load model loading device comprises a plurality of actuators; the rainwater drip immersion device comprises a water storage box and at least one kind of component of a support layer side surface water dripping component and a drill hole water immersion component on a track plate; the measurement and observation device comprises a comprehensive test instrument, a soil body moisture sensor, a tensioning meter, a soil body moisture data collector, a hole water pressure meter, an ultrasonic wave flow rate meter, a dynamic penetrometer and the like. The device structure is simplified; the operation is convenient. The invention also discloses a rising soil test method using the device. The method has the advantages that the steps are simplified; the whole rising soil process can be well simulated; the experiment basis is provided for the rising soil prevention and control.

Description

technical field [0001] The invention relates to the technical field of railways, in particular to a high-speed railway ballastless track embankment slopping test system and a test method. Background technique [0002] Mud seepage is a common disease of railway subgrade, and it is also the most common subgrade disease in ordinary ballasted railways. There are relatively mature treatment methods and measures. However, the mud and mud pumping of the ballastless track railway subgrade is still in the preliminary understanding stage, and the key to curb its development is to speed up exploratory research in this area. [0003] Swelling of ballastless track subgrade is a special disease form of ballastless track subgrade of high-speed railway in recent years. Flooding of the ballastless track subgrade changes the supporting conditions and force transmission path of the ballastless track structure, causes uneven foundation stiffness in the longitudinal direction, becomes the sourc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/24
CPCG01N33/24
Inventor 聂如松冷伍明粟雨滕继东梅慧浩杨奇徐方赵春彦唐盛米伍晓伟涂仁盼范瑞祥陈晓斌程龙虎
Owner CENT SOUTH UNIV
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