RU2595121C1 - Holding barrier railing for highways - Google Patents

Abstract

FIELD: roads.

SUBSTANCE: invention relates to road guards. Barrier railing comprises vertical posts and horizontal lengthwise beams, arranged along road, which are fixed to vertical posts through console support and cantilever-shock absorbers. Posts are made of double tee. Lengthwise beams are asymmetric C-shaped profile with additional flanges, bent inside section, where reduction (reduction of overall dimensions of cross-section profile) is performed at one end of beams, so that when mounting structures, lengthwise asymmetric C-shaped beams are inserted one into another. Lengthwise beams are attached to posts in one or more tiers directly via cantilever support or cantilever-shock absorbers by metal group, which is a T-shaped pin with an elastic retainer bushing, T-shaped pin is made so that it passes through longitudinal slot of asymmetric section of beam, being in horizontal position, then, expanded by 90° relative to axis of pin and yielding in reverse side, rests against inner flanges of section of beam and due to bends on T-shaped link does not allow not only go outside and but turn about its axis. Thus T-shaped pin can be directly installed in any place of section of beam, and not make it with side, which saves time when assembling structures guard rail, and also enables to install posts with any required spacing. After installation, in the required place of section of beam of T-shaped pins, its position is fixed by means of located thereon an elastic locking sleeve. Longitudinal sections of beam of one tier are connected to each other by seating into each other, by means of through-bolts via spacer inserts, providing required compression between connected surfaces of sections of beams without deformation thereof at moment of tightening bolts.

EFFECT: technical result is increase in guard rail, improved workplace injury prevention of guard railing structures and improved repairability.

1 cl, 9 dwg

Description

The invention relates to road fences for roads, retaining for cars, side, barrier type, and can be used in the construction of roads and artificial structures.

Known road fence containing vertical hollow racks, on which horizontal beams are fixed in three tiers (FR patent No. 2698643).

Known barrier fencing containing racks made in the form of a set of longitudinal unidirectional flexible rods oriented along the axis of the rack, fastened together with at least one group of inclined unidirectional flexible rods located at an angle of 30-90 ° to the axis of the rack and covering all or part of the longitudinal flexible rods while all flexible rods are combined in at least one longitudinal profile by location in a continuous polymer medium (RU, patent No. 2217546).

Known road fence, with the so-called, simplified design, which used structural elements made of a bent profile (RU, patent No. 2320805)

A road fence is known that contains vertical hollow racks of variable or constant cross-section along the vertical, to which three tiers of horizontal beams of rectangular C-shaped section are attached, the upper tier being attached directly to the racks, and the two lower tiers being attached to the racks through box-shaped damping buffer inserts and rectangular cross-section (RU, patent No. 2158799).

The closest analogue of the proposed solution is a barrier fence containing vertical racks made of a bent profile of a U-shaped section or of two bent profiles of a U-shaped section or a profile of a C-shaped section connected together. The longitudinal beams are made of a profile in the form of a C-shaped section with additional shelves bent inward to the section, and the longitudinal beams are attached to the racks in one or more tiers directly through the shock absorbers using a fastener in the form of a mounting bracket, which is a bolt welded to its head with a U-shaped washer, made in such a way that the bolt passes through the through longitudinal groove of the beam, and the washer covers the flanges bent inward into the section, allows the installation of vertical racks with any hom. The sections of the longitudinal beams of one tier are butt-joined together with the help of U-shaped inserts through bolts through spacer cylindrical bushings (RU, patent No. 2278199).

The disadvantages of the known designs and the closest analogue in particular are: the complexity of installation (the need to establish hardware groups on the side of the Corresponding beam), the high risk of injury associated with both the rigidity of the structure of the closest analogue and the method of attaching C-shaped beams end-to-end, since there is a risk of bulging of the beam and piercing, as a result of this, by a beam of a colliding car, large overloads during collision with a fence of cars, insufficient reliability.

The objective of the invention is to reduce the trauma of the barrier fence, increase the mounting suitability of its design, increase the reliability of the design of the barrier fence while holding cars.

This problem is solved by connecting attached to the racks of the I-beam profile, FIG. 3, longitudinal C-shaped beams, FIG. 4 “a” is not end-to-end, as is done in previously known constructions, but by inserting one beam into another, due to asymmetric crimping of the C-shaped profile on one side. Moreover, the beams are inserted: the subsequent inside the previous one in the direction of the vehicle, Fig. 9. Thus, when a vehicle hits a fence, the previous barrier beam is layered on the next one, and even when the fixing bolts are broken, the beams remain pressed against each other, thereby eliminating the risk of the beam being teased and a vehicle pierced.

The beam section is fastened to the supporting consoles and to the shock absorbing consoles by means of the T-shaped pin of FIG. 8, pos. 5, which, unlike the fastener used in patent RU 2278199 (... the fastener is a bolt with a U-shaped washer welded to its head, made so that the bolt passes through the through longitudinal groove of the beam, and the washer covers the shelves bent inward C-shaped beam, and which can only be inserted through the end of the C-shaped beam), can be introduced anywhere in the C-shaped beam directly through the through longitudinal groove of the beam, which significantly saves time and simplifies the assembly and installation of the fence barriers, i.e. reduces its complexity.

The shock absorber console for the lower tier of the beams, FIG. 1, pos. 2, with two-tier structures, as well as shock absorber brackets for two lower tiers of beams, 2, pos. 2, with three-tier structures, they are used for damping a colliding car, thereby reducing overloads for passengers of vehicles, providing greater safety. Supporting consoles, FIG. 1 and 2, pos. 3, being elements of the truss for the upper tiers of the barrier fencing beams, include a large number of structural racks in the kinematics of the fence, thereby increasing the holding ability of the barrier fencing, redistributing the load forces to a much larger linear section of the fence compared to the linear dimensions of the vehicle’s direct collision zone on the fence .

The technical result of the invention is to increase the holding ability of the barrier fencing, reduce the structural hazard of the barrier fencing and increase its mounting suitability, while the barrier fencing racks can be made of any other profile instead of the I-beam. The profile of the rack can be either solid or composite, which is a combination of several longitudinal profiles between each other under the following conditions:

J _{x sections of the profile} ≥J _{x sections of the I-beam} , and

W _{x profile sections} ≥W _{x I-section} , where:

J _x is the moment of inertia of the section relative to the axis XX;

W _x - axial moment of resistance or axial moment of resistance in bending relative to axis XX;

X-X - the main axis of the cross-section of the profile of the rack installed in the structure. The direction of the X-X axis along the axis of the fence.

The invention is illustrated by drawings, where:

FIG. 1 - design of a two-tier fence, where:

pos. 1 - asymmetric C-shaped beam with one-sided crimping;

pos. 2 - shock absorber console;

pos. 3 - supporting console.

FIG. 2 - construction of a three-tier fence, where:

pos. 1 - asymmetric C-shaped beam with one-sided crimping;

pos. 2 - shock absorber console;

pos. 3 - supporting console.

FIG. 3 - rack;

but. - rack for 2 tiers;

b. - rack for 3 tiers.

FIG. 4 - asymmetric C-shaped beam with one-side crimping

but. - asymmetric C-shaped beam with one-sided crimping;

b. - a scheme for connecting beams into a single thread;

at. - connection diagram of the beams with each other using a spacer insert, pos. four.

FIG. 5 - supporting console (in Fig. 1, Fig. 2, Fig. 8, item 3).

FIG. 6 - console shock absorber (in Fig. 1, Fig. 2, Fig. 8, pos. 2).

FIG. 7 - spacer insert (in Fig. 4 and Fig. 8, item 4).

FIG. 8 is a sectional diagram of a connection of a longitudinal C-shaped beam, pos. 1, with shock absorber console, pos. 2, or supporting console, pos. 3 using a T-pin, pos. 5, and the elastic locking sleeve, pos. 6.

The work of the barrier fence is as follows:

A vehicle during an emergency collision with a barrier fence deforms it, partially extinguishing its kinetic energy, which is used to crush the shock absorbing consoles, and under heavy loads the struts themselves. In addition, the longitudinal beams are tensioned, which, encircling the car and acting on it with the force of elastic deformation, return it to the so-called run-out zone of the car. Thanks to the use of asymmetric C-shaped sections of beams inserted into each other, the car does not break them, because the previous beam is pressed to the next in the direction of the car. The rigid C-shaped profile and the operation of the supporting consoles, forming a spatial truss on the upper tiers, make it possible to include in the process of interaction of the car with the retaining barrier a large linear section of the fence, significantly larger than the area of direct contact of the car with the barrier fence. The whole structure works like a stretched string, returning the car to the carriageway with a small coast angle. The presence of shock absorbing brackets significantly reduces overload from emergency braking for passengers of passenger cars. Thus, the proposed invention is a barrier fence using a C-beam with asymmetric crimping, FIG. 1, pos. 1, inserted into each other during the formation of the longitudinal zones of the beam fencing, console-shock absorbers, FIG. 6, on the lower tiers of the sections of the fence beams, FIG. 1, pos. 2, consoles supporting, FIG. 1, pos. 3 and FIG. 5, forming a spatial truss and I-pillars on the upper chords of the beam sections, FIG. 3, in the proposed format, provides when solving the problem - holding vehicles, achieving a new technical result.

Claims (1)

Retention barrier for roads, containing vertical racks and longitudinal beams attached to them, located along the carriageway, characterized in that the racks are made of an I-beam profile, to which longitudinal beams are mounted, which are an asymmetric C-shaped profile with additional shelves, bent inside the section, where crimping (reducing the overall dimensions of the section profile) is made on one side of the beam in such a way that when mounting the structure, longitudinal asymmetric C These beams are inserted into each other and attached to the shock absorbing consoles on the lower tiers and to the supporting consoles on the upper tiers, which form, in connection with the longitudinal beams, a spatial truss fastened by a hardware group, which is a T-shaped stud with a fixing elastic sleeve , which is made in such a way that the stud passes through the longitudinal slit of the asymmetric beam, being in a horizontal position, then turned 90 ° relative to the axis of the stud and leaning back well, it abuts against the internal bent shelves of the beam and due to bends on the T-shaped bridge does not only allow it to go outside, but also to turn around its axis, which ultimately allows you to install the T-shaped pin directly anywhere in the beam and, accordingly, install the racks in fencing designs with any step.

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