CN-116180501-B - Method for avoiding track damage by crossing movable faults

CN116180501BCN 116180501 BCN116180501 BCN 116180501BCN-116180501-B

Abstract

The invention relates to the technical field of railway track traffic, in particular to a method for avoiding track damage by crossing movable faults, which comprises the steps of sequentially arranging a plurality of rows of hydraulic cylinders at two sides and the bottom of a track at one side of the fault, sequentially reducing the relative horizontal and vertical sliding quantity of the fault from the fault by the hydraulic cylinders in real time according to the relative horizontal and vertical sliding quantity of the fault monitored in real time under the working conditions of simultaneously meeting allowable turning radius, allowable gradient and train passing requirements, and intelligently and automatically carrying out turning and slope slowing treatment on the track at one side of the fault at the same time so as to eliminate the deformation of steel rails at two sides of the fault.

Inventors

ZHAO LU
HUANG CHANGFU
YAO TIEJUN
LI SHAOHUA
ZHANG FANGE
Yue Cuizhou

Assignees

中铁十五局集团有限公司

Dates

Publication Date: 20260512
Application Date: 20230119

Claims (6)

1. A method for avoiding track damage by crossing a movable fault is characterized by setting one side of the movable fault to be a fixed side and the other side to be a movable side along the direction of crossing the movable fault, fixedly arranging a plurality of rows of hydraulic cylinders II below the track in the region of the fixed side of the fault, paving steel rails of the track on sleepers to enable the top thrust of the hydraulic cylinders II to apply force to positions below crossing points of the sleepers and the steel rails, reducing the relative sliding quantity of the fault by sequentially and equispaced from the fault through the plurality of rows of the hydraulic cylinders II when the fault is activated, carrying out slope-releasing treatment on the track on a lower disc by utilizing the top thrust of the hydraulic cylinders II, symmetrically and fixedly arranging hydraulic cylinders I on two sides of the track in the region of the fixed side of the fault, applying force to the sleeper by ejector rods of the hydraulic cylinders I, sequentially paving track plates along the extending direction of the steel rails, and arranging at least three sliding rails on the track plates, wherein the positions of the sliding rails correspond to the sleeper positions of the rails one by one on one side; the two side end surfaces of the sleeper are connected and fixed into an integral structure through a connecting beam, the ejector rod of the first hydraulic cylinder applies force to the sleeper through the connecting beam, and the axial center of the outer side surface of the connecting beam is provided with a first long guide groove which is used for limiting and guiding the ejector rod of the first hydraulic cylinder; A first displacement sensor and a second displacement sensor are respectively arranged at two sides of the fault, wherein the first displacement sensor is used for monitoring the relative slip delta 1 of the fault in a horizontal plane, and the second displacement sensor is used for monitoring the relative slip delta 2 of the fault in a vertical plane; Based on the relative slip quantity delta 1 、Δ 2 obtained through real-time monitoring, the relative slip quantity of the fault is reduced in real time through a plurality of rows of the first hydraulic cylinder and the second hydraulic cylinder sequentially and equidifferent from the fault, and the track on the fixed side of the fault is automatically subjected to simultaneous turning and slope slowing treatment, so that the deformation of steel rails on two sides of the fault is eliminated.
2. The method for avoiding track damage through movable faults according to claim 1, wherein a reaction frame of the hydraulic cylinder I consists of a reaction wall, a wall toe, a fixed substrate and a movable substrate, wherein the fixed substrate is paved on the fixed side, the movable substrate is paved on the movable side, the movable substrate and the steel rail paved on the fixed substrate are kept continuous at the fault, the boundary between the fixed substrate and the movable substrate is positioned at the fault and keeps a certain boundary distance, the reaction wall is rigidly connected with the fixed substrate, meanwhile, the lower part of the middle part of the reaction wall is anchored in a rock-soil body, and the wall toe is rigidly connected with the outer side surface of the reaction wall.
3. The method for avoiding rail damage through movable faults according to claim 2, wherein fixing grooves of the first hydraulic cylinder are distributed on the inner side surface of the counter-force wall at equal intervals in sequence, and the positions of the fixing grooves correspond to the positions of the long guide grooves.
4. A method for avoiding track damage by crossing movable faults as set forth in claim 1, wherein for any movable fault in three-dimensional space, the angle formed by the fault and the track in the horizontal plane is alpha, the angle formed by the fault and the track in the vertical plane is beta, the relative horizontal and vertical sliding amounts of the fault in the horizontal plane are delta 1h = Δ 1 sin alpha and delta 1v = Δ 1 cos alpha respectively, when the fault slides, the track in the horizontal plane meets the allowable turning radius requirement, the allowable turning radius of the track is [ R ], and the turning angle corresponding to the allowable turning radius of the track after deformation is Under the condition that the track meets the allowable turning radius R and the traffic requirement, the length L b1 of the deformed steel rail is equal to the length L 1 before deformation, so that the track is required to be turned, the distance between sleeper pairs is set to be L, the number M 1 = L 1 /l+1 of sleeper pairs is required, N 1 hydraulic cylinders are shared by sleeper pairs every M 1 on a fault floor, the number N 1 = n 1 M 1 /m 1 -of the hydraulic cylinders is required for eliminating the relative sliding quantity delta 1 in the horizontal plane of the fault, and the horizontal displacement step distance of the hydraulic cylinders is delta p1 = 2Δ 1h /N 1 for eliminating the relative horizontal sliding quantity delta 1h or the relative sliding quantity delta 1 in the horizontal plane of the fault.
5. A method of avoiding track breakage across an active fault as in claim 4 wherein the first cylinders are arranged in a sequence of 1,2, 3, 4..j 1 … N 1 /2 from the first cylinders on the two sides of the track on the fixed side at the fault, wherein the first cylinders with the left and right side numbers j 1 of the track are respectively displaced by delta 1zj1 = Δ 1h -δ p1 ×j 1 and delta 1yj1 =-(Δ 1h -δ p1 ×j 1 when the movable side slides to the right relative to the fixed side, and wherein the first cylinders with the left and right side numbers j 1 of the track are respectively displaced by delta 1zj1 = -(Δ 1h -δ p1 ×j 1 ) and delta 1yj1 = Δ 1h -δ p1 ×j 1 when the movable side slides to the left relative to the fixed side.
6. A method for avoiding track damage through movable faults as claimed in claim 4, wherein relative horizontal and vertical displacement amounts of faults are delta 2h = Δ 2 cos beta and delta 2v = Δ 2 sin beta respectively in a vertical plane, when the faults slide, the track is required to meet allowable gradient requirements in the vertical plane, the allowable gradient of the track is [ i ], the corresponding slope angle of the allowable gradient of the track after deformation is θ 2 =arctan [ i ], and under the condition that the allowable gradient [ i ] and the traffic requirements are met, the length L b2 of the track after deformation is equal to the length L 2 before deformation, and therefore, the track is required to be subjected to gentle slope treatment The method comprises the steps of setting a spacing of the first sleeper to be l, setting the number M 2 = L 2 /l+1 of the first sleeper, setting the number N 2 = n 2 M 2 /m 2 of the second hydraulic cylinders on the fault fixing side, setting the number 1,2, 3 and 4 of the second hydraulic cylinders on the fixing side, and setting the number j 2 ….N 2 /2 of the second hydraulic cylinders on the fixing side to be 1,2, 3 and 4 of the second hydraulic cylinders on the fixing side in order to eliminate the vertical sliding quantity delta 2v or the relative sliding quantity delta 2 in the fault vertical plane, wherein the vertical displacement quantity of the second hydraulic cylinders is delta 2j2 = Δ 2v -δ p2 ×j 2 when the fixing side slides relative to the moving side.

Description

Method for avoiding track damage by crossing movable faults Technical Field The invention relates to the technical field of railway track traffic, in particular to a method for avoiding track damage by crossing movable faults. Background Railway routes often traverse large mountainous areas, and the railway is often inevitably required to traverse a large number of faults due to the influence of severe geological forces. Railway trains today are extremely fast and often traverse a large number of tunnels. Once a fault is activated, the damage of a rail can affect the passing, a great amount of maintenance cost is required, and even a running train is derailed to cause serious casualties, wherein the fault activation generally refers to that a relatively stable fault is changed due to the intrinsic factors or is restarted to start moving under the action of other external factors (such as reservoir construction, mining, earthquake and the like). It is therefore extremely important to ensure that the track crossing the active fault does not break. At present, when a railway tunnel passes through a movable fault, measures such as an overexcavation design, a hinging design, an isolation energy dissipation design and the like are mainly adopted, and the problem of passing through the fault is usually solved from the aspect of tunnel design. In fact the track structure is an important factor directly affecting the driving safety. The design thought of the track structure at present mainly takes the idea that the track structure can be finely adjusted when the track is slowly deformed and the track structure is greatly deformed and is convenient to maintain as a leading idea. For example, patent number CN 112064425A, "a servo track for a cross-movable fault railway tunnel and a method for controlling the same," mainly includes a track, a wide-track plate, horizontal and vertical displacement actuators, a displacement sensor, and a control module. Vertical and horizontal displacement actuators are arranged below and on two sides of the wide sleeper plate in a certain area on two sides of the fault. When the displacement between the wide rail plates caused by fault sliding exceeds a first-level threshold value, if the difference value between the displacement between the wide rail plates and the first-level threshold value is within an adjusting range, driving a horizontal and vertical displacement actuator to adjust the rail to meet the first-level driving requirement, otherwise, not needing to be regulated and controlled, and adopting speed reduction passing. By analogy with other level track deformation adjustment methods, the track is finely adjusted accurately in real time through the displacement sensor and the control module. However, the problems of (1) the prior art that the regulation and control devices are uniformly distributed on two sides of a fault mainly increase the construction and maintenance cost of the rail, (2) when the fault is slightly slipped, the train passing safety can be ensured through the fine adjustment of the rail and the deceleration treatment of the train, however, the slip amount is generally larger when the actual fault is activated, and the train deceleration is difficult when the fault is suddenly slipped, and (3) when the deformation of the rail is not regulated in the prior art, the rail at the fault is damaged, the safe operation of the railway is influenced, and a large number of casualties are caused. Therefore, on the basis of existing support and overbreak of the railway tunnel, when the faults generate large horizontal sliding, the method can ensure that the track crossing the horizontal movable faults is not destroyed, and the train passing speed is kept, so that the method has important significance for the safety and smooth running of the railway. Disclosure of Invention According to the method, a plurality of columns of hydraulic cylinders are sequentially distributed on two sides and the bottom of a rail of a fault lower disc respectively, and relative horizontal and vertical sliding amounts of the faults are sequentially reduced from the fault through the hydraulic cylinders in real time according to the real-time monitoring of the relative horizontal and vertical sliding amounts of the faults under the condition that the allowable turning radius, the allowable gradient and the train passing requirement working conditions of the rails are simultaneously met, so that the rail on one side of the faults is intelligently and automatically subjected to simultaneous turning and slope slowing treatment, and the deformation influence of rails on two sides of the faults is eliminated. The invention is realized by the following technical scheme: A method for avoiding track damage by crossing a movable fault includes setting one side of the movable fault to be a fixed side relative to the other side, setting the other side to be a moving side, fixedly arranging a plurality o