CN2441849Y

CN2441849Y - Double block type concrete rail pillow

Info

Publication number: CN2441849Y
Application number: CN 00248216
Authority: CN
Inventors: 陈德学
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-08-25
Filing date: 2000-08-25
Publication date: 2001-08-08
Anticipated expiration: 2010-08-25

Abstract

The utility model relates to a double block type concrete rail pillow in a reverse trapezoid shape. Metallic jointing pieces are fixed between two steel reinforced concrete with positive bending moment parts; the lateral section of the positive moment part is in reverse trapezoid shape, and an included angle between the waist and the bottom margin is 105 to 135; two inner end surfaces of the positive bending moment part are oblique planes, and an included angle between the oblique plane and the bottom margin is 120 to 135. The utility model is characterized in that compared with the double block type concrete rail pillow in a trapezoid shape, the utility model improves the compression strength and the bending strength of the rail pillow; the longitudinal resistance, the vertical resistance and the lateral resistance of a roadbed can be enhanced greatly so that the stability of the roadbed and the security of running are improved greatly.

Description

Inverted ladder type double-block type concrete sleeper

The utility model relates to the railroad sleeper technical field.

Theory and practice proves that the stable geometry morpheme of railroad train track is the necessary condition that guarantees train safe and even running, and the associativity of conventional rails and a prose style free from parallelism are difficult to satisfy this condition.The size of vertical, the horizontal and vertical stability of track depends on the degree of stability of railway roadbed, and therefore, the stability that improves railway roadbed is to improve the key of track stability.Existing traditional design all can not address the above problem well, for example, shaped design for sleeper, tradition all adopts positive ladder type made of one piece, there is breakthrough in France to a formula, has become double-block type, has saved material, improve the flexural strength of sleeper, but still do not broken away from weakness and limitation that the trapezoid sleeper exists.Thereby still can not effectively improve the stability of railway roadbed significantly.

The purpose of this utility model provides a kind of inverted ladder type double-block type concrete sleeper, only its sleeper shape has been done simple improvement, the intensity of sleeper itself is improved a lot, material-saving, and can improve vertical, the vertical and horizontal stability of the track that is on the railway roadbed significantly.Thereby for the operation of common railway train and bullet train provides safety guarantee.

The utility model is achieved in that a kind of inverted ladder type double-block type concrete sleeper, it is characterized in that being fixed with metal connecting piece between two blocks of positive bending moment part steel concrete, positive bending moment part cross section is for trapezoidal, its waist and base angle are 105-135 °, two inner faces of positive bending moment part are the inclined-plane, and inclined-plane and bottom surface angle are 120-135 °.

A plurality of cross sections of two positive bending moments part are that similar inverted ladder type is good, and big near the outer end is near inner little.So that the saving material also can be prismatic.

The sleeper bottom surface can be the plane, is preferably middle convex shape on the length direction, is provided with two voussoir shapes as sleeper bottom surface length direction, is monolithic, and two voussoir major parts link to each other, with further raising lateral resistance.

Because the utility model has adopted two piece structures of falling the ladder-type sleepers, thereby improved the force-bearing situation of its sleeper mechanical property and railway roadbed, the compressive strength and the flexural strength of sleeper itself are improved a lot, and material-saving, simultaneously effectively improve vertical, the horizontal and vertical resistance of track on railway roadbed significantly, improved its vertical, horizontal and vertical stability significantly.Under the situation that does not increase other special measures, guaranteed the train safe high-speed cruising, improved the economic benefit and the social benefit of train greatly.

Be described further below in conjunction with embodiment and accompanying drawing, but not as to qualification of the present utility model.

Fig. 1 is its structural representation.

Fig. 2 is its top view.

Fig. 3 is the A-A cross section of Fig. 1.

Fig. 4 is another embodiment sleeper front schematic view.

Referring to Fig. 1-Fig. 3,1 is positive bending moment part steel concrete, and 2, middle 2 is metal connecting piece, and the cross section can be T shape or L type etc.Can be common shape above the sleeper, fixing rail, sleeper cross section are for trapezoidal, and its waist and base angle α=105-135 °, the inner face 3 of positive bending moment part is the inclined-plane, this inclined-plane and bottom surface angle β=120-135 °.

Fig. 4 also can be made into mid portion on the length direction of sleeper bottom surface and is convex, as two wedge shape major part connecting types, with sleeper be one, can further increase lateral resistance, improve lateral stability.

Through certain experimental test result of seminar, the utility model is compared with the positive ladder type formula of tradition sleeper, and ballast longitudinal resistance can improve 22%, and vertical resistance can improve 62.4%, and lateral resistance also is significantly improved.The compressive strength of sleeper itself can improve 37.3%, in the railway roadbed user mode, can improve sleeper intensity 61.0%.Simultaneously, but than a block type sleeper material-saving, 10-20% reduces cost.

Facts have proved that only this improvement can make railway economy benefit and social benefit improve greatly, is fit to widely popularize.

Claims

1, a kind of inverted ladder type double-block type concrete sleeper, it is characterized in that being fixed with metal connecting piece between two blocks of positive bending moment part steel concrete, positive bending moment part cross section is for trapezoidal, its waist and base angle are 105-135 °, two inner faces of positive bending moment part are the inclined-plane, and inclined-plane and bottom surface angle are 120-135 °.

2, sleeper according to claim 1, a plurality of cross sections that it is characterized in that two blocks of sleepers are similar trapezoidal, and big near the outer end is near inner little.

3, sleeper according to claim 1 and 2 is characterized in that sleeper bottom surface length direction is provided with two voussoir shapes, is monolithic, and two voussoir major parts link to each other.