Method for constructing expansion joints of foundation in plate type ballastless track and templates for expansion joints
A technology of slab-type ballastless track and expansion joint, which is applied in the direction of track, track maintenance, road, etc., can solve problems such as construction difficulty, achieve the effects of improving construction efficiency, ensuring smoothness, and avoiding wrong platform
Inactive Publication Date: 2012-01-04
THE 8TH GRP OF CHINA RAILWAY 1ST ENG CO LTD
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[0034] The present invention will be further described below in conjunction with the accompanying drawings.
[0035] see Figure 1 to Figure 8 The expansion joint formwork of the plate-type ballastless track base shown is composed of three-layer formwork, the second-layer formwork 2 is located between the first-layer formwork 1 and the third-layer formwork 3, and keeps a distance from each other, the first-layer formwork Similar to the third-layer formwork, it is an upright steel plate with high left and low right and the middle part is equipped with a steel plate bent towards the driving direction. The lower part of the vertical steel plate is provided with multiple inverted "U"-shaped gaps ear plate 5;
[0036] The second layer formwork 2 is made up of three sections of erected steel plates with high left and low right and discontinuous. There is an inverted "U"-shaped notch 4, and at least two ear plates 5 are connected to the upper part.
[0037] The ear plate connected...
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The invention discloses templates for expansion joints of a foundation in a plate type ballastless track. A second-layer template is positioned between a first-layer template and a third-layer template and keeps a distance from both the first-layer template and the third-layer template; the first-layer template and the second-layer template are similar and are both a vertical steel plate which ishigh on the left, low on the right and provided with a steel plate bent in a running direction in the middle, the lower part of the vertical steel plate is provided with notches, and the upper part of the vertical steel plate is connected with ear plates; and the second-layer template consists of three sections of vertical steel plates which are high on the right, low on the right and disconnected, the middle section is a steel plate bent in the running direction, the left and right sections are flat steel plates, the lower parts of the three sections of vertical steel plates are provided with notches and the upper parts of the three sections of vertical steel plates are connected with ear plates. The invention also discloses a method for constructing the expansion joints of the foundation in the plate type ballastless track. The method contributes to the realization of streamlined construction operation, improves construction efficiency, realizes the accurate control over water drainage counter slopes on two sides of the foundation and ensures the height smoothness of a top face of the foundation.
Description
technical field [0001] The invention relates to a construction method of a ballastless track, in particular to a construction method of an expansion joint of a plate-type ballastless track base and an expansion joint template. Background technique [0002] Traditional railway tracks are composed of ballast beds, sleepers, rails, connectors, etc. The sleepers directly supporting the rails are usually anti-corrosion sleepers, embedded in ballast, and their function is to spread the load on the roadbed. In recent years, in order to meet the needs of increasing the speed of locomotives, slab ballastless tracks have been introduced. The slab ballastless track is composed of seamless steel rails, elastic split fasteners, filled backing plates, track plates, cement emulsified asphalt mortar, concrete bases, convex blocks and polyurethane resin filled around them. Since the stiffness of each layer decreases from top to bottom, the construction methods of each layer have different ...
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IPC IPC(8): E01B37/00E01B1/00B28B7/00B28B7/26
Inventor 李勇刘广超程鸿翔张开聪胡大东古先进龙季洪林君洪
Owner THE 8TH GRP OF CHINA RAILWAY 1ST ENG CO LTD