CZ22830U1 - Pot-like draining device of steel pedestrian bridge - Google Patents

Description

Technical field

The present invention relates to a new method of designing drainers for use on pedestrian steel bridges.

Background Art

Previously, steel bridges were constructed with a surface consisting of a resin layer, possibly with a composite reinforced concrete slab. The higher pavement thicknesses, and thus the load-bearing structures, induced by this, enabled the use of pot-sized drainers of a larger size and a common solution.

Nowadays, steel structures for pedestrian bridges are designed, where insulation is directly walkable. This solution is made possible by higher-quality insulation materials and the possibility of their design with a walk-through, or non-slip walk-through treatment. In the case of such direct-walking insulation and thin steel decking, it is not possible to use conventional drainers that are too large and have a high height, which then protrudes below the lower deck bridge reinforcement plane, thus impairing the user's aesthetic perception of the structure. Drainers are usually made up of a rectangular or circular pot with a welded-on pipe, which drains the water under the bridge or into the longitudinal lead. The drainage inlet is usually formed by a grille with holes that clog and thus reduce the functionality of the drain.

The essence of the technical solution

The aforementioned disadvantages are eliminated by a pot drawer with a circular inlet for a steel pedestrian walkway which is connected to a discharge pipe according to the present invention. Its essence is that it consists of a pot of circular shape with an axis passing through the bridge deck, which is embedded in the steel bridge deck of the footbridge and is chamfered at its upper inner edge. This circular pot is provided with a drain rail in its upper part, in which a circular kiwt is attached at the center. The upper surface of the circular cover lies in the plane of the upper surface of the bridge deck, usually in the valley formed by the transverse slope of the bridge and the counter-slope. The annular space formed between the inner surface of the pot and the circumferential surface of the circular cover forms the drain of the drain. The bottom of the pot, which is below the steel deck, is formed by an interconnected first sheet metal and a second sheet metal strip, which are in the shape of an elliptical annulus, inclined at an angle from the horizontal plane interspersed with the lower inner edge of the pot, and connected to the outlet tube by their lower edge .

It is preferred to have a circular pot, a bottom of a drain, a drain rail, a circular drain cover and a steel drain pipe.

It is desirable that the slope of the first and second sheet metal webs relative to the horizontal plane interspersed with the lower inner edge of the pan be in the range of 1: 100 to 1: 1.

In a preferred embodiment, the interconnection of the first and second sheet metal strip is oriented in a direction perpendicular to the axis of the valley bridge of the steel bridge deck.

It is also advantageous if the discharge pipe is located in the vertical axis of the circular pot and if the circular cover is attached to the partition by a screw, for example a countersunk head and a hexagon socket.

The walkway waterproofing of the bridge deck can be retracted to the drain rail.

The advantage of the present solution is that it provides a simple and functional drainage solution for pedestrian bridges that does not allow dirt to settle.

-1 CZ 22830 Ul

BRIEF DESCRIPTION OF THE DRAWINGS

An example of a circular drain drainer for steel pedestrian bridges is shown in the accompanying drawings, in which Fig. 1 is a plan view of the drain, in Fig. 2 its cross section and in Fig. 3 its longitudinal section.

Example of a technical solution

An example of a drain with circular inlet for steel pedestrian walkways is shown in Fig. 1, Fig. 2 and Fig. 3. The drain is formed by a circular pot i whose size is determined by the hydrotechnical calculation. This pot 1 is welded into the steel deck 8 of the footbridge. The pot i can be made of steel tubes of commercially available dimensions or welded in any other size. The bottom 2 of the drainer 10 is formed by two obliquely (from the horizontal plane interspersed with the lower inner edge of the pot 1) welded strips of an elliptical annular sheet, namely the first sheet metal strip 2.1 and the second sheet strip 2.2. The belts 2.1 and 2.2 are welded at an inclination of 10 to prevent dirt deposits inside the pot and dewaterer, where the slope defines their shape and is usually selected from 1: 100 to 1: 1. Drainers. Advantageously, it is possible to orient the mutual weld of the two sheets in a direction perpendicular to the valley deck 8 as shown in the figures. In the upper part of the pot 1, a partition of the dewaterer 3 is welded. In the partition 3 a circular cover 4 of the dewaterer is attached, which defines its circular inlet. This circular outlet has a size in the range of about 13 to 17 mm, for example, to prevent female heels from engaging. The drain housing 4 may advantageously be attached, for example, by a countersunk head screw 6 with a hexagon socket to prevent unauthorized dismantling in order to avoid unevenness in the deck surface 8 and at the same time to be removed during maintenance. The drain pipe 5 is welded to the bottom of the drainer, to which a common longitudinal drainage pipe is connected or water drains under it into the longitudinal drainage drainage. The outlet pipe 5 can advantageously be located in the axis of the circular pot and the dewaterer.

Drainers with round inlets for steel pedestrian bridges are recommended to be made of stainless steel, for example 1.4401 A4, because its dimensions deteriorate the possibility of corrosion protection inside it. In the case of stainless steel, it is recommended to use a transition electrode to cook pot 1 into the bridge deck 8 to prevent bimetallic corrosion. The attachment of the round cover 4 to the partition 3 is also recommended by the stainless steel fastener 6, eg countersunk head screw and hexagon socket.

The walkway waterproofing of the bridge deck 8, if used, can be retracted to the drain rail 3.

A possible embodiment of the welds of the individual components is shown in FIGS. 2 and 3.

Industrial usability

A simple and functional solution of a circular drain for steel pedestrian footbridges, which prevents dirt build-up and drainage clogging, allows wide application in the design of bridge structures and especially steel pedestrian bridges, as it eliminates many of the deficiencies of current drainers.

Claims (7)

PROTECTION REQUIREMENTS 40 1. A potted drainage for steel footbridges, connected to a drain pipe, characterized in that it consists of a pot (1) of circular shape with an axis passing through a valley of the bridge deck (8), which is embedded in the steel bridge deck (8), is chamfered at its upper inner edge along its entire circumference and is provided with a drain bar (3) in its upper part in which Pot drainage according to claim 1, characterized in that the circular pot (1), the drain floor (2), the crossbar (1). A circular cover (4) is attached from above to the center, the upper surface of which lies in the plane of the upper surface of the deck (8), and an annular space formed between the inner surface of the pot (1) and the peripheral surface of the circular cover (4). forms the drain of the drain, wherein the bottom (2) of the pot (1), which is located below the steel deck (8), is formed by interconnected first sheet metal strip 3) Drainage, round cover (4) Drainage (4) and drain pipe (5) are made of steel. A pot dewaterer according to claim 1 or 2, characterized in that the inclination (10) of the first sheet metal strip (2.1) and the second sheet metal strip (2.2) from the horizontal plane is in the range of slope, vertical to horizontal, 1: 100 to 1. : 1. A pot dewaterer according to claim 1 and any one of claims 2 or 3, characterized in that the joint of the first sheet metal strip (2.1) and the second sheet metal strip (2.2) is oriented in a direction perpendicular to the valley of the steel bridge deck (8). A pot dewaterer according to claim 1 and any one of claims 2 to 4, characterized in that the discharge pipe (5) is located in the axis of the dewaterer pot (1). 5 (2.1) and the second metal strip (2.2), which are in the shape of an elliptical annulus, are inclined at an inclination (10) from the horizontal and are connected with their lower edge to the discharge pipe (5). A pot dewaterer according to claim 1 and any one of claims 2 to 5, characterized in that the annular cover (4) is attached to the crossbar (3) by a countersunk head screw (6) with an internal 2o hex. A pot drainage system according to claim 1 and any one of claims 2 to 6, characterized in that the walkable waterproofing (7) of the bridge deck (8) is retracted to the drainage bar (3).