CN213626301U - High-temperature-resistant reinforced concrete composite beam - Google Patents

Abstract

The utility model relates to a high temperature resistant reinforced concrete composite beam, this composite beam include the composite beam main part and cover establish in the composite beam main part outside and with the fire prevention casing that the composite beam main part interval set up. The combination beam main part includes the plain concrete protective layer of the U type of opening upwards and imbeds the reinforced concrete roof beam that sets up in the opening of plain concrete protective layer. A plurality of cooling pipelines are installed in the plain concrete protective layer, the water inlet of each cooling pipeline is connected with the water tank A through a water inlet pipe, and the water outlet of each cooling pipeline is connected with the water tank B through a water discharge pipe. And a ventilation assembly is arranged between the top of the fireproof shell and the top of the combined beam main body. The utility model provides the high fire danger is higher and need carry out the high temperature resistance ability of the roof beam body in the building of naked light operation, has improved the structural security of the roof beam body under the high temperature environment, has eliminated the potential safety hazard.

Description

High-temperature-resistant reinforced concrete composite beam

Technical Field

The utility model relates to a reinforced concrete roof beam technical field, concretely relates to high temperature resistant reinforced concrete composite beam.

Background

In buildings with a high risk of fire and where open fire operations are required, the temperature in such buildings is often high. Conventional reinforced concrete roof beam intensity can greatly reduced under high temperature environment, influences the structural performance of the roof beam body, can the fracture even, if adopt conventional reinforced concrete roof beam as the structural beam of this type of building, has great potential safety hazard.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high temperature resistant reinforced concrete composite beam, this composite beam have improved the high temperature resistance ability of the roof beam body in the building that the conflagration is dangerous higher and need carry out naked light operation, have improved the structural security of the roof beam body under the high temperature environment, have eliminated the potential safety hazard.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the high temperature resistant reinforced concrete composite beam includes a main composite beam body and fireproof casing covering the main composite beam body and set separately to the main composite beam body. The combination beam main part includes the plain concrete protective layer of the U type of opening upwards and imbeds the reinforced concrete roof beam that sets up in the opening of plain concrete protective layer. A plurality of cooling pipelines are installed in the plain concrete protective layer, the water inlet of each cooling pipeline is connected with the water tank A through a water inlet pipe, and the water outlet of each cooling pipeline is connected with the water tank B through a water discharge pipe. And a ventilation assembly is arranged between the top of the fireproof shell and the top of the combined beam main body.

Further, the fire prevention casing is for controlling both ends open-ended cuboid, including roof, symmetry setting front bezel and the back plate of both ends below around the roof and bottom plate between the lower extreme of front bezel and back plate are connected. The plain concrete protection layer comprises a front wall and a rear wall which are symmetrically arranged and a bottom wall connected between the lower ends of the front wall and the rear wall. The top plate is connected with the top of the reinforced concrete beam through a plurality of connecting pieces. The front plate is connected with the front wall through a plurality of connecting pieces. The back plate is connected with the back wall through a plurality of connecting pieces. The bottom plate is connected with the bottom wall through a plurality of connecting pieces.

Furthermore, a water pump A is installed on the water inlet pipe. And the water drainage pipe is provided with a water pump B.

Furthermore, a ventilation channel is arranged between the top of the fireproof shell and the top of the combined beam main body; the ventilation assembly comprises an air inlet pipe arranged at one end of the ventilation channel and an exhaust pipe arranged at the other end of the ventilation channel; the exhaust pipe is connected with the exhaust fan.

Furthermore, the fireproof shell is made of basalt fiber materials.

According to the technical scheme, the composite beam main body is formed by wrapping the plain concrete protective layer on the outer side of the reinforced concrete beam, so that the rigidity and the strength of the composite beam main body can be increased, and the impact resistance of the composite beam main body is improved; the cooling pipeline is arranged in the plain concrete layer, one end of the cooling pipeline is connected with the water tank A through the water pump A and the water inlet pipe, the other end of the cooling pipeline is connected with the water tank B through the water pump B and the water drain pipe, water in the water tank A can enter the cooling pipeline and flow in the cooling pipeline to take away heat in the combination beam main body, finally the water flows into the water tank B through the water drain pipe, and after cooling treatment, water in the water tank B is introduced into the cooling pipeline to be cooled, so that the utilization rate of water resources is improved; the fireproof shell is arranged around the composite beam main body by adopting the basalt fiber material, so that part of heat can be isolated, and high temperature in a building is prevented from being conducted to the composite beam main body; for a small part of heat entering the composite beam through the gap between the fireproof shell and the composite beam main body, the ventilation assembly is arranged, the part of heat can be discharged to the outside, and cold air outside is introduced into the gap, so that the heat transferred to the surface of the composite beam main body is further reduced. The utility model discloses improved the high temperature resistance ability of the roof beam body in the building that the conflagration is dangerous higher and need carry out the naked light operation greatly, improved the structural security of the roof beam body under the high temperature environment, eliminated the potential safety hazard.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a side view of the present invention;

fig. 3 is a schematic view of the usage state of the present invention.

Wherein:

1. the air inlet pipe, 2, the exhaust pipe, 3, the exhaust fan, 4, the floor, 5, the reinforced concrete roof beam, 6, the cooling pipeline, 7, plain concrete protective layer, 8, the connecting piece, 9, the fire prevention casing, 10, inlet tube, 11, drain pipe, 12, post, 13, ground, 14, water pump A, 15, water tank A, 16, water tank B, 17, water pump B.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

as shown in fig. 1-2, the high temperature resistant reinforced concrete composite beam includes a composite beam main body and a fireproof shell 9 covering the outer side of the composite beam main body and spaced apart from the composite beam main body. The composite beam main body comprises a U-shaped plain concrete protection layer 7 with an upward opening and a reinforced concrete beam 5 embedded in the opening of the plain concrete protection layer 7. A plurality of horizontally arranged cooling pipelines 6 are arranged in the plain concrete protective layer 7, the water inlet of each cooling pipeline 6 is connected with a water tank A15 through a water inlet pipe 10, and the water outlet is connected with a water tank B16 through a water outlet pipe 11. And a ventilation assembly is arranged between the top of the fireproof shell 9 and the top of the combined beam main body.

Further, the fireproof shell 9 is a cuboid with two open ends at left and right, and comprises a top plate, a front plate and a rear plate which are symmetrically arranged at the front and rear of the top plate and below the two ends, and a bottom plate connected between the lower ends of the front plate and the rear plate. The plain concrete protection layer 7 comprises a front wall and a rear wall which are symmetrically arranged and a bottom wall connected between the lower ends of the front wall and the rear wall. The top plate is connected with the top of the reinforced concrete beam 5 through a plurality of connecting pieces 8. The front plate is connected to the front wall by a number of connectors 8. The back plate is connected to the back wall by a number of connectors 8. The bottom plate is connected with the bottom wall through a plurality of connecting pieces 8.

Further, a water pump A14 is installed on the water inlet pipe 10. The water pump B17 is installed on the water outlet pipe 11.

Further, a ventilation channel is arranged between the top of the fireproof shell 9 and the top of the combined beam main body; the ventilation assembly comprises an air inlet pipe 1 arranged at one end of the ventilation channel and an exhaust pipe 2 arranged at the other end of the ventilation channel; the exhaust pipe 2 is connected with an exhaust fan 3.

Further, the fireproof shell 9 is made of basalt fiber material. The fireproof shell made of the basalt fiber material can isolate a part of heat, and the heat in a building is prevented from being transferred to a beam body.

As shown in fig. 3, a column 12 is respectively disposed at the left and right ends of the composite beam, the top of the column 12 is the floor 4, and the bottom of the column 12 is the ground 13. The air inlet pipe 1 and the air outlet pipe 2 are respectively vertically placed in the columns 12 at two ends of the combined beam, the tops of the air inlet pipe 1 and the air outlet pipe 2 penetrate through the floor 4 to reach the outside, the tail ends of the pipelines of the air inlet pipe 1 and the air outlet pipe 2 are both horizontal pipelines, so that rainwater can be prevented from entering the pipelines when raining, and the air outlet fan 3 is arranged at the top of the air outlet pipe 2. The heat which is not isolated by the fireproof shell is transmitted inwards to enter a gap between the top of the fireproof shell and the top of the combined beam main body, hot air in the gap between the top of the fireproof shell and the top of the combined beam main body can be discharged outdoors by opening the exhaust fan 3, and outdoor cold air reaches the gap through the air inlet pipe, so that the air in the gap is circulated, a part of heat is taken away, and the heat transmitted to the surface of the combined beam main body is reduced.

Plain concrete protective layer 7 of U type is set up in reinforced concrete roof beam 5's the outer portion, the bottom and the lateral part of reinforced concrete roof beam 5 are lived in the parcel, and set up the cooling tube 6 that a plurality of levels set up in plain concrete protective layer 7, the outer wall and the plain concrete protective layer 7 direct contact of cooling tube 6, when having low temperature liquid such as water to flow in cooling tube 6, the heat of plain concrete protective layer 7 can transmit the liquid in cooling tube 6, take away the heat in plain concrete protective layer 7 through the liquid in cooling tube 6. The vertical post 12 of placing at the composite beam both ends of inlet tube 10 and drain pipe 11, the both ends of cooling tube 6 in the composite beam stretch into respectively in two posts with inlet tube 10 and drain pipe 11 and are connected, guaranteed that inlet tube 10 and drain pipe 11 do not directly expose outdoors, improved the security of intaking and drainage, the bottom of inlet tube 10 links to each other with water pump A14 and water tank A15, the bottom of drain pipe 11 links to each other with water pump B17 and water tank B16. The heat transfer of the combination beam body is to the outer wall of cooling pipe 6, and the water in water tank A15 is taken out by water pump A14, makes rivers pass through cooling pipe 6 through inlet tube 10, takes away the heat of cooling pipe 6 outer wall to arrange away by drain pipe 11 and get into water tank B16, thereby take away the heat in the combination beam body. The water can be recycled, water flows from the water tank A15 to the water tank B16 through the water pump A14 in one cooling process, and water can be supplied from the water tank B16 through the water pump B17 in the next cooling process after the water in the water tank B16 is cooled.

Compared with the prior art, the utility model has the advantages that:

(1) the utility model discloses well fire prevention casing is not continuous with plain concrete protective layer in close contact with, but link to each other with the plain concrete protective layer of parcel outside the reinforced concrete roof beam through the connecting piece, can make like this and leave certain space between fire prevention casing and the plain concrete protective layer, the air in the space passes through air-supply line and exhaust pipe and links to each other with outdoor, the hot-air in the space is discharged through the exhaust pipe, and inhale outdoor cold air through the air-supply line, constantly take a breath in the space, discharge the heat, can effectively prevent on heat transfer to plain concrete protective layer, thermal-insulated effect is better.

(2) The utility model discloses in directly setting up plain concrete protective layer with the cooling pipeline, it is different with the direct mode that sprays the cooling of the pearl that absorbs water in to plain concrete protective layer among the prior art, spray the fine drop of water and can exist and spray inhomogeneous phenomenon, with individual plain concrete interfacial contact insufficient, and the fine drop of water may adsorb on the inner wall, can not in time drain away, this all can lead to cooling inefficiency, just the utility model provides a pipeline wall of cooling pipeline and the inner wall contact of plain concrete protective layer more abundant, it is higher to take away thermal efficiency. And simultaneously, the utility model discloses rivers in the well cooling pipeline constantly flow and update, and rivers remain low temperature throughout, can guarantee to transmit the heat on the cooling pipeline wall and can in time be taken away, have improved the efficiency of cooling. The mode of spraying the fine drop in the utility model before has influenced cooling efficiency.

(3) The utility model discloses set up two sets of water tanks, water tank A and water tank B and water pump A and water pump B supply water by water tank A at a cooling in-process, and water gets into water tank B and through cooling back, can supply water by water tank B, and the cooling water has obtained circulation practicality, reaches the purpose of using water wisely.

(4) The utility model provides a pipeline all sets up among plain concrete protective layer, can play effectual guard action to the pipeline, avoids the pipeline to receive the impact, and has anticorrosive effect.

The above-mentioned embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall into the protection scope defined by the claims of the present invention.

Claims (5)

1. The high-temperature-resistant reinforced concrete composite beam is characterized in that: the combined beam comprises a combined beam main body and a fireproof shell which covers the outer side of the combined beam main body and is arranged at intervals with the combined beam main body; the combined beam main body comprises a U-shaped plain concrete protective layer with an upward opening and a reinforced concrete beam embedded in the opening of the plain concrete protective layer; a plurality of cooling pipelines are arranged in the plain concrete protective layer, the water inlet of each cooling pipeline is connected with the water tank A through a water inlet pipe, and the water outlet of each cooling pipeline is connected with the water tank B through a water outlet pipe; and a ventilation assembly is arranged between the top of the fireproof shell and the top of the combined beam main body.

2. The high temperature resistant reinforced concrete composite beam of claim 1, wherein: the fireproof shell is a cuboid with openings at the left end and the right end, and comprises a top plate, a front plate and a rear plate which are symmetrically arranged below the front end and the rear end of the top plate, and a bottom plate connected between the lower ends of the front plate and the rear plate; the plain concrete protection layer comprises a front wall and a rear wall which are symmetrically arranged and a bottom wall connected between the lower ends of the front wall and the rear wall; the top plate is connected with the top of the reinforced concrete beam through a plurality of connecting pieces; the front plate is connected with the front wall through a plurality of connecting pieces; the rear plate is connected with the rear wall through a plurality of connecting pieces; the bottom plate is connected with the bottom wall through a plurality of connecting pieces.

3. The high temperature resistant reinforced concrete composite beam of claim 1, wherein: a water pump A is arranged on the water inlet pipe; and the water drainage pipe is provided with a water pump B.

4. The high temperature resistant reinforced concrete composite beam of claim 1, wherein: a ventilation channel is arranged between the top of the fireproof shell and the top of the combined beam main body; the ventilation assembly comprises an air inlet pipe arranged at one end of the ventilation channel and an exhaust pipe arranged at the other end of the ventilation channel; the exhaust pipe is connected with the exhaust fan.

5. The high temperature resistant reinforced concrete composite beam of claim 1, wherein: the fireproof shell is made of basalt fiber materials.

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