Reinforced concrete light supports Help support various lighting devices. In the preparation of construction work, it is first necessary to provide a construction site. These works include selecting a variety of devices for lighting and installation method. Several species are used building materials As a support, among them reinforced concrete. The latter is most stable, however, has certain disadvantages. Zb-design for external lighting It is very dependent on weather conditions and temperature drops, but have a high service life.
Reinforced concrete light supports have several important advantages allocating them among all other types of supporting structures:
In addition, reinforced concrete racks for lighting have certain disadvantages, due to which they may not be suitable for the construction of certain varieties of objects:
Reinforced concrete supports of St. Used for external illuminations of streets, sidewalks, industrial areas and roads. They can also be used to illuminate parks and space next to residential buildings.
There are several varieties of light racks from reinforced concrete:
When developing light racks for industrial use, tension or frame fittings are used.
Light Zb-rackand marked depending on the structural mass, the method of reinforcement and sizes. In addition, they differ in temperature mode, the level of cold resistance, the possibilities of moisture absorption, load and voltage drops of electricity.
All information on reinforced concrete supports of street lighting is kindly provided by the LLC "Samara Plant of Reinforced concrete products". Here you can buy reinforced concrete products at competitive prices.
Buy zhb supports LEP SV110-35 kV, SV-110-5 10-50 kV, SV-95 0.4 kV, 5kv, 6kv, 10 kV, 20 square price in Moscow with delivery in Russia
Reinforced concrete lighting supports are used in megalopolis, as well as in small settlements. With their help illuminate parks, squares, roads, territory industrial buildings and warehouse complexes, cafes, restaurants, etc. Also reinforced concrete supports can be used during suspension air lines With a low voltage level.
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Reinforced concrete lighting supports are manufactured in several stages. First, the fittings of the desired size and class are selected. Next, it is chicted by means of a special machine, carry out the contour spirals and conduct other manipulations. The concrete mixture is prepared using cement, various inert and chemical components and water. After a thorough mixing of the composition and obtaining the desired consistency, the mass is poured into the concrete-layer.
Production of supports for outdoor lighting is carried out in special forms. They are stacked by metal spirals on a certain technology. After that, the container is fastened with a prepared concrete mixture and aligned with tools. Drying structures is carried out in the workpiece warp system.
The use of concrete products for organizing street lighting is high demand. This is due to a large number of advantages that are characterized by supports:
Installation of reinforced concrete supports for external lighting is carried out according to a predetermined scheme. It is important to take into account the specifics of the soil, the climatic features of the terrain to pick up the most durable installation option. The height of the support is taken into account, since in such cases its weight is much larger. In connection with the presence of some difficulties in the installation, it is recommended to trust exclusively to competent specialists.
Our online store sells reinforced concrete racks for LPP supports and other products of their own production. We offer exceptionally proven and reliable goods, which allows you to be confident in his quality and compliance with all regulatory requirements. Our managers, if necessary, will advise you about the available range, the price and conditions of delivery will be announced.
Supports of lighting and power lines are used since electricity and lighting appeared everywhere. And, if at first posts for mounting wiring were made mainly from wood, then more technological materials are used to produce these structures.
However, this is not surprising, since metal and reinforced concrete supports, in comparison with structures, characteristic of the first half of the last century, are becoming more stronger and more stable to substantial loads.
Consider what features of modern lighting supports and power lines, as well as what and how they are made.
It is no secret that power lines are cable (swallowed in soil) and air. Special reinforced concrete light supports have found widespread use in the device of air lines.
The installation of reinforced concrete supports can be performed in those regions where the estimated air temperature does not fall below -55 ° C. Such a limitation is due to the main features of production material. Concrete is characterized by the presence of multiple micropores and, as a result, a tendency to destruction during critical temperature fluctuations.
The basis of such structures is a centrifuged or vibrated rack made with the use of tight heavy cement solutionsreinforced with welded metal structures.
IMPORTANT: Special strength and durability are characterized by structures erected with the use of centrifuged racks (used for the device LPP 35-110 kV).
LEP supports, in addition to centrifuged and virgin racks, may consist of the following structural elements:
Installation of reinforced concrete supports in the ground is carried out by installing the facility in a pre-drilled boiler cylindrical form With the subsequent swelling of the sandy-gravel mixture into the sides of the sinuses.
In order to ensure the necessary strength of the construction of the structure on weak soils, the underground part of the BL support is strengthened by the riglels seized by half-womb. Clamps or through bolts are applied for attaching mounted metal structures.
Retrootone supports are made using high-quality concrete reinforced with wire-rod and reinforcement rods.
Among the main advantages of these structures, the following qualities should be noted:
Important: The main disadvantage of supports made using reinforced concrete is low strength in accordance with the mass of the construction as a whole.
In addition, high weight and dimensions of such products are wrapped with substantial spending during transportation.
In addition to the fact that reinforced concrete lighting supports are used everywhere, poles are used for power lines.
Such structures are divided into the following categories:
In the photo - intermediate types
Such structures are not designed for the load directed along the LAM and are used exclusively for the installation of wires and fixing cables. To date, about 80% of all LPPs are mounted on.
In the photo - Anchor Poles
If the route is characterized by a small angle of rotation (not more than 30 °), then the load on the supports are small, and therefore the angular intermediate supports can be used. At large angles over 30 ° anchor corner supports with more sturdy construction and anchor fastening of wires.
Such structures are located predominantly at the beginning and end of the LAM. The structures of this type are designed for unilateral loads.
In accordance with the structural features, reinforced concrete supports VL are divided into the following categories:
So, after we decided on technical and operational characteristics Reinforced concrete supports designed for laying air lines, consider the technology of their manufacturing on the example of the modification of SV 95.
Instructions for production phased. First - preparatory stage provides for the following work.
Preparation of the working mixture:
Preparation of reinforcing metal structures:
Cooking forms:
The second stage is production. At this stage, the filling of the working mixture is performed and the formation of the finished product.
The following works are performed during the process:
In the third stage, the product is exposed to isothermal processing.
This is done as follows:
At the final stage, dismantling shape, trimming of reinforcement, quality check and shipment of the finished product to the warehouse.
So we reviewed general About how the production of reinforced concrete supports is performed. We also found out that these facilities represent their technical and operational characteristics.
Have any questions requiring explanations? You can find more useful information, looking at the video in this article.
The reinforced concrete supports of the LAP are made of concrete, which is additionally reinforced with metal, as clearly from the name. They are assigned a marking of CV, which means "Stands Vibrated". They are used to layer power lines 0.4-10 kV.
This comes here, first of all, about the high weight of such a support, respectively, the installation of supports of this type should be made by professionals of the highest class. There is also a possibility of the emergence of various defects during transportation (we are talking about cracks, chips). In addition, due to the effects of moisture and temperature drops, it is possible to paint concrete, which reduces the strength of the entire structure.
⇒ Zheleza concrete poles are made of different grades and are indicated in this way, for example, a rack concrete SV 95-2, where 95 is the length of the rack in decimeters, and 2 is a conditional bearing capacity.
According to GOST 23009-78, the racks are made of the following sizes:
They also differ in the method of reinforcement, on which the bearing capacity depends.
R / B SV 95 supports are widely used for laying and mounting networks with a voltage of 0.4 kV and for laying communication lines. They are mainly used for, when installing additional electrostrol. For their manufacture, heavy concrete is used (class B30), which meets the standards of GOST 26633-91. As a filler of this concrete, manufacturers apply granite crushed stone with a strength indicator of at least M 1200 - M 1400, frost resistance F 300.
Racks 95 can be operated at a temperature reaching -55 degrees Celsius. They are successfully operated in regions i-v Categories and can be installed where seismicity does not exceed 7 points on the Richter scale. Reinforced concrete supports of LAP SV 95.2 and SV 95.3 are equipped with mortgage products needed in order to fasten the structures and access elements necessary Ground. Data racks are narrowed up and their length is 9.5 meters. The support of the support is rectangular and equals: at the base height - 240 mm, upstairs - 165 mm, width at the base and at the top of the same - 150 mm. The weight of the rack is 750 kg.
Reinforced concrete pillar of SV-95 at the enterprise - the manufacturer is supplied with reinforcing iron products intended for attaching structures and ground parts.
Reinforced concrete racks of SV 110 are designed for power lines with voltage up to 10 square meters. They can also be installed for communication lines. R / B Poles of the SV 110 are resistant to the effects of an aggressive medium, low and high temperatures and can be successfully installed in areas with an increased degree of fire danger.
The reinforced concrete poles 110 also find their use in quality. Their manufacturing is carried out using heavy concrete by vibratingressing. These concrete mixtures have a class of compression strength of B30.
The length of the racks of CC 110-3.5 and SV 110-5 is 11 meters. At the base of the support, the height is 280 mm, and at the top height is 165 mm. The width of the base is 170 mm, the upper part is 175 mm. The weight of the concrete support is 1150 kg. Racks 110-3.5 have an estimated bending moment 35 kNm, and CB 110-5, respectively, 50 kNm.
Reinforced concrete supports of SV 110 are made of heavy concrete, which has the following characteristics:
Each of them is equipped with mortgage metal products designed to fasten the structures and connecting the parts of the ground design and is manufactured in strict accordance with the GOST and TU standards.
All supports necessarily have a certificate of conformity and quality passport.
Concrete supports of external lighting are used in urban, country conditions. They are designed to illuminate automotive highways, streets, sidewalks, industrial zones, other objects. Such a street lighting system is also used as highlighting power lines under 10kV voltage. For LAP, the voltage of over 35 kV such lighting supports are made from centrifuged concrete.
R / b Lighting Supports are made of various sizes, forms on vibropressing technologies, centrifugation. As consumables Used high quality concrete, metal reinforced wire.
In this article:
Plugs from reinforced concrete are used to illuminate urban, country roads, adjacent territories of manufacturing enterprises, warehouses, sports grounds, urban parks, as well as private houses and country sites.
R / B Poles are divided into the following types:
For industrial use, concrete racks are reinforced in two ways:
Products differ among themselves reinforcement technology, weighing, overall dimensions, respectively, have different markings.
Different designs of reinforced concrete lighting racks are distinguished by the following operational properties:
The process of manufacturing outdoor lighting devices on railway racks is divided into several stages:
At this stage, a selection of reinforcements of the required type is made, sizes. It is carried out with cutting, for which special equipment is used, and screw the contour spirals.
Cement of a certain brand, mineral and chemical additives is taken to produce a concrete mixture. All components are placed in a concrete mixer, water is poured in the established proportion, the mixture is stirred to a homogeneous mass.
For the manufacture of direct railway racks under the lighting equipment, special forms are used, which are thoroughly cleaned and lubricated before the concrete mixture. First, metal spirals are placed in molding, then the rod is made. The steel rod is pre-heated, then stretches through the helix, fixed in the container.
When the armature is embedded in the container, the prepared solution is poured. For sealing it in the form, a special vibrator is used. The surface is aligned with the help of an ordinary construction shop.
After performing all the main stages of production, the product is dried. The concrete product in the form is covered with PVC film (to prevent hips to the moisture design), heated is turned on. After the established time period, the polyethylene film is removed.
Mounting work begins with the preparation of a project previously agreed with authorities.
Installation procedure:
For your information! In certain situations, the bottom of the pit is additionally poured by concrete solution. Such a reason is more reliable. After completion of the mounting on the rack, the lighting equipment is mounted, the lamps are screwed.
On the racks from the reinforced concrete, intended for the voltage with voltage to 1kV, the grounding devices are installed. They are necessary for the lead in the ground of thunderstorm overvoltages. The lighting equipment itself is similarly grounded. The lighting device housings are connected to the ground circuit.
The grounding circuit is made of steel pins (diameter from 6 mm), corners. They are installed triangle, interconnected by a metal strip. The grounding device must have up to 30 ohm resistance.
Constructions from reinforced concrete must be subjected to periodic maintenance:
Concrete lighting supports are complex structures that require the implementation of building standards in the process of their installation and a certain periodic care. Thanks to such lighting structures, the safe movement of vehicles on motorways, pedestrians, as well as the performance of various works in the dark are ensured.
