Double-block type ballastless track slab and preparation method thereof
A ballastless track, double-block technology, applied in tracks, roads, ballast layers, etc., can solve problems such as poor track circuit transmission performance, and achieve the effects of good bonding performance, improved insulation performance, and simple process
Active Publication Date: 2018-01-12
SOUTHEAST UNIV
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Problems solved by technology
[0003] Purpose of the invention: The purpose of the invention is to provide a double-block ballastless track slab, which effectively improves the insulation performance and solves the problem of poor transmission performance of the existing track circuit
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[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0023] A double-block ballastless track slab, including a ballast bed slab and a double-block sleeper poured in the ballast bed slab, such as Figure 1-6 As shown, the double-block sleeper includes two pillow blocks 1 for supporting rails and two trusses 2 arranged in parallel horizontally. Each sleeper block 1 is connected into a double-block sleeper, and the truss 2 is a space truss, and the truss 2 includes a plurality of longitudinal beams 3 arranged in layers along the height direction of the pillow block 1, and the extension direction of the longitudinal beams 3 is the same as that of the double-block sleeper. The extension direction is the same. As a preferred embodiment, the longitudinal beams 3 are arranged in two layers, one longitudinal beam 3 is arranged on the upper layer, and two longitudinal beams 3 are arranged on the lower layer. Set on the ...
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The invention discloses a double-block type ballastless track slab. The double-block type ballastless track slab comprises a roadbed slab and a double-block type sleeper poured in the roadbed slab. The double-block type sleeper comprises two sleeper blocks and a plurality of trusses, wherein the two ends of each truss are poured in the two sleeper blocks correspondingly. The trusses are space trusses, each truss comprises a plurality of longitudinal beams arranged in the height direction of each sleeper block in a layered mode, the longitudinal beams are made of steel-continuous fiber composite bars, and the extending direction of each longitudinal beam is consistent with the extending direction of the double-block type sleeper. The invention further discloses a preparation method of the double-block type ballastless track slab. The trusses made of the steel-continuous fiber composite bars serve as transverse carrying bars to be combined with concrete, and the double-block type ballastless track slab is prepared; a closed loop formed by the steel bar trusses in the track slab is eliminated, the insulating property of the track slab is improved, the using length of a track circuit is increased, and the force-bearing performance and the endurance performance of the track slab are ensured; and the preparation method is simple in technology, other insulating measures are not needed, and the cost is effectively reduced.
Description
technical field [0001] The invention relates to railway track technology, in particular to a double-block ballastless track slab with a steel-continuous fiber composite bar truss and a preparation method thereof. Background technique [0002] The double-block ballastless track is made of reinforced concrete, which has a stable structure and long service life, and is widely used in high-speed railways around the world. When the non-insulated track circuit is applied to the double-block ballastless track, the closed loop formed by the steel rail and the steel truss in the sleeper produces mutual inductance, which deteriorates the primary parameters of the track circuit, increases the equivalent resistance of the rail, and reduces the inductance. The reduction of ballast leakage resistance affects the transmission performance of the track circuit, resulting in a significant shortening of the track circuit's service length. Contents of the invention [0003] Purpose of the in...
Claims
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Login to View More IPC IPC(8): E01B1/00E01B3/40B28B23/02B28B1/16
Inventor 吴刚杨洋
Owner SOUTHEAST UNIV