Combination structure of water-protected hollow steel pipe and seismic isolation rubber bearing and its realization method

Abstract

The objective of the present invention is to provide a combination structure of a water-protected hollow steel pipe and a seismic isolation rubber bearing, and a method for realizing the same. After water is poured into the hollow steel pipe and the hollow steel pipe is filled rapidly, a flowing, cooling solid water column is formed, the water in the hollow steel pipe enters the water distribution channel from the first round hole and is sprayed uniformly from multiple nozzles at the same time, the fan-shaped water sprayed from the multiple nozzles forms a water film / water spray heat insulating protective layer in the space defined by the upper enclosure, lower enclosure and surrounding elevation of the rubber body, and the water collected in the lower enclosure is discharged from the water conduit, and after the fire is extinguished, pressurized dry air is blown into the hollow steel pipe, and the air in the hollow steel pipe enters the water distribution channel from the first round hole and is sprayed uniformly from multiple nozzles at the same time, completely drying the space defined by the upper enclosure, lower enclosure and surrounding elevation of the rubber body, the water distribution channel, and the hollow steel pipe. The combined structure of hollow steel pipes and seismic rubber bearings can protect against post-earthquake fires and direct fires throughout the entire process, achieving full life cycle insulation protection, and improving the service life of the system.

Description

[Technical Field]

[0001] The present invention relates to the field of fire prevention for architectural structural members, and in particular to a combined structure of a water-protected hollow steel pipe and a seismic isolation rubber bearing, and a method for realizing the same (combination method). [Background technology]

[0002] Seismic isolation rubber bearings are a type of structural component with seismic isolation function that is used in the seismic isolation field for buildings, structures, and equipment.The rubber body that forms the core component is made by sequentially laminating steel plates and vulcanized rubber.

[0003] When horizontal displacement occurs due to earthquakes, the deformation can become so great that it can reach the height of the bearings. Furthermore, because rubber materials have a low softening temperature, they are susceptible to damage when exposed to fire, posing a risk to the superstructure and equipment. Therefore, it was necessary to implement fire prevention design to prevent fires and secondary fires caused by earthquakes.

[0004] The relatively large horizontal deformation caused by the rubber body during an earthquake can easily destroy the fire-resistant covering structure attached to the surrounding area.

[0005] Prior art has made many developments in fire-resistant coated structures, especially in the deformation adaptability of coated structures, such as Patent Documents 1, 2, 3, 4, 5, 6, 7, and 8. However, most of the designs are conceptual, and the reliability of construction applications is obviously insufficient due to the brittleness of hard materials and the tendency of soft cotton felt to tear when it absorbs moisture. Therefore, although some hope for the repair of fire-resistant coated structures after earthquakes, they cannot directly prevent fire accidents caused by earthquakes throughout their entire life cycle.

[0006] As with seismic isolation rubber bearings, hollow steel pipes may be at risk of fire if they are used as steel columns supporting roof structures or as support legs supporting upper equipment.

[0007] In addition, hollow steel pipes and seismic isolation rubber bearings are often used in buildings, structures, storage tanks, and other facilities that require seismic isolation design. Therefore, it is necessary to adopt an integrated fire prevention method.

[0008] The use of water-cooled protection technology is expected to have clear benefits, particularly in coastal areas and marine structures, but at present there are relatively few examples of the technology being used to protect structural members from fire. For example, Patent Document 9 discloses its use in fire protection of aluminum alloy plate joints, Patent Documents 10 and 11 disclose annular sprinkler pipes used to cool and lower the temperature of the outer elevations of petrochemical storage tanks (cylindrical), and their manufacture, and Patent Document 12 proposes a structure in which annular sprinkler pipes are connected to the bottom or side of the upper connecting plate of an earthquake-resistant rubber bearing, due to the need for fire protection for the earthquake-resistant rubber bearings that support LNG storage tanks; when there is a sufficient amount of water, the annular water curtain that is formed can prevent fires from spreading to the rubber layer of the earthquake-resistant bearing, thereby achieving thermal insulation. It was found that there are no fire prevention technical measures for the combined structure of hollow steel pipes (steel columns or support legs) and seismic isolation rubber bearings of buildings, structures and equipment, and in particular, damage to the rubber body due to heat from the top surface of the upper connecting plate (Patent Document 12) is not taken into consideration, and there is still a problem that a large amount of water will increase the load on the system and reduce the reliability of protection. [Prior art documents] [Patent documents]

[0009] [Patent Document 1] Chinese Patent No. CN201710254966.1 [Patent Document 2] Chinese Patent No. CN202110502543.3 [Patent Document 3] Chinese Patent No. CN202110442670.9 [Patent Document 4] Chinese Patent No. CN202210347695.5 [Patent Document 5] Chinese Patent No. CN202011471929.4 Publication [Patent Document 6] Chinese Patent No. CN202110425328.8 [Patent Document 7] Chinese Patent No. CN202021564748.1 [Patent Document 8] Chinese Patent No. CN202222640078.2 [Patent Document 9] Chinese Patent No. CN202020567805.5 [Patent Document 10] Chinese Patent No. CN201410626842.8 [Patent Document 11] Chinese Patent No. CN202022433199.0 Publication [Patent Document 12] Chinese Patent No. CN202210502868.6 Summary of the Invention [Problem to be solved by the invention]

[0010] Compared with the prior art, in which the deformation adaptability of coated protective seismic isolation rubber bearings using inorganic materials such as plate material and cotton felt is poor, the integrated protective technical means for the combined structure of hollow steel pipe and seismic isolation rubber bearing are defective, and the application of water-cooled protective technology to fire prevention of this type of functional combined component is still insufficient, the present invention provides a combined structure of water-protected hollow steel pipe and seismic isolation rubber bearing and a method for realizing the same.

[0011] This invention can protect the integrated structure of hollow steel pipes and seismic isolation rubber bearings from fire and post-earthquake fire. Buildings, structures, storage tanks, containers, and other facilities using this technical means can significantly improve fire safety and post-earthquake fire safety, and realize the most concentrated use of water resources. In particular, its application in coastal areas and marine structures will further demonstrate significant economic benefits over the entire life cycle, improving the inherent fire safety of buildings, structures, and equipment structures and helping to reduce the damage caused by fire collapse. [Means for solving the problem]

[0012] The technical means adopted by the present invention is a combined structure of a water-cooled hollow steel pipe, a water-protected hollow steel pipe with a substructure, and a seismic isolation rubber bearing, and further includes a water-cooled seismic isolation rubber bearing, the water-cooled seismic isolation rubber bearing has four water-conducting inner frames and a rectangular outer frame respectively fixed on a second square steel plate, and a water-diversion channel is defined between the outside of the four water-conducting inner frames and the inside of the rectangular outer frame, and the second square steel plate is connected to the first square steel plate of the water-cooled hollow steel pipe through the four water-conducting inner frames and the rectangular outer frame, and the rectangular Nozzles are attached to a plurality of nozzle mounting holes provided at intervals on a second rectangular steel plate of a water distribution channel that runs around the inside of the outer frame, an upper enclosure is fixed below the second rectangular steel plate, a lower enclosure is fixed on top of a third rectangular plate, a water conduit hole in the third rectangular plate is fixed to one end of a water conduit, a rubber body is provided between the second rectangular steel plate and the third rectangular plate, the third rectangular plate is connected to a substructure, and the other end of the water conduit extends from the substructure, connecting the water-cooled hollow steel pipe, the water distribution channel, and a plurality of nozzles.

[0013] A method for realizing a combined structure of a water-protected hollow steel pipe and a seismic isolation rubber bearing, Step S1: After the earthquake, the horizontal displacement deformation of the rubber body is reset, and immediately after the fire or direct fire occurs, water is poured into the hollow steel pipe, the hollow steel pipe is rapidly filled, and a flowing cooling solid water column is formed, and the water pressure is maintained in the range of 0.25 to 0.5 MPa. The water in the hollow steel pipe enters the water distribution channel through the first round hole and is sprayed uniformly from multiple nozzles at the same time. The fan-shaped water sprayed from the multiple nozzles forms a water film / water spray insulation protective layer in the space defined by the upper enclosure, lower enclosure and surrounding elevation of the rubber body, and the water collected in the lower enclosure is discharged from the water conveyance pipe. After the fire is extinguished, pressurized dry air is blown into the hollow steel pipe, maintaining the air pressure in the range of 0.1 to 0.3 MPa. The air in the hollow steel pipe enters the water diversion channel through the first round hole and is sprayed out uniformly from multiple nozzles simultaneously, drying the space defined by the upper enclosure, lower enclosure, and surrounding elevations of the rubber body, the water diversion channel, and the hollow steel pipe. [Effects of the Invention]

[0014] The combined structure of the one-piece water-protected hollow steel pipe and seismic isolation rubber bearing of the present invention is highly reliable in preventing fires and post-earthquake fires, is technically feasible, meets current engineering needs and technological development trends, and is applicable to a wide variety of buildings, structures, and equipment. Its centralized use of water resources allows for widespread regional application. For buildings with high fire resistance requirements, the usable area of ​​the residence is significantly increased, and for structures, the aesthetics and convenience of use are improved. The implementation method takes into account both disaster and post-disaster situations, scientifically and rationally improving the practical service life of the combined structure.

[0015] The structural design of the water-conducting inner frame prevents heat from being transferred from above the first square steel plate and damaging the rubber body from the top surface, separates the water distribution channel to improve water circulation efficiency, and uses the reinforcement between the first and second square steel plates to transmit the vertical load of the hollow steel pipe and distribute it evenly across the rubber body, solving the need for this.

[0016] Through the structural design of the water diversion channel, multiple nozzles, upper enclosure, lower enclosure and the surrounding elevation of the rubber body, an effective water film / water spray insulation protective layer (protective space) is created, ensuring that the temperature of the rubber on the surface of the rubber body does not exceed 110°C, completely eliminating the problems of earthquake damage and reduced durability during the actual service life of conventional fire-resistant coating structures.

[0017] The lower enclosure and the third corner plate maximize the collection of cooling water, which is then discharged through the water pipe, achieving a recycling rate of over 80%, maximizing water resource conservation and creating considerable economic benefits.

[0018] The present invention further enhances the inherent safety of fire and post-earthquake fire prevention and control for the combined structure consisting of seismic isolation rubber bearings and hollow steel pipes, solves the actual needs of environmental protection where the amount of water used for firefighting and rescue is large and recycling is urgently needed, and can achieve the protective effect with very low water / air pressure, completely save energy, and bring great benefits to society, public safety and the economy. [Brief explanation of the drawings]

[0019] [Figure 1] 1 is a schematic overall configuration diagram of the present invention. [Figure 2] 1 is a schematic exploded view of the overall structure of the present invention. [Figure 3] FIG. 2 is a partial longitudinal cross-sectional view of the water-cooled hollow steel pipe and water-cooled seismic isolation rubber bearing of the present invention. [Figure 4] 1 is a schematic top view of a water diversion channel structure of the present invention. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0020] As shown in Figure 1, this is a combined structure of a water-protected hollow steel pipe and seismic isolation rubber bearing, which includes a water-cooled hollow steel pipe 1 and a substructure 3, and further includes a water-cooled seismic isolation rubber bearing 2, which is provided between the first square steel plate 1-2 of the water-cooled hollow steel pipe 1 and the substructure 3.

[0021] As shown in Figures 2, 3, and 4, the water-cooled hollow steel pipe 1 consists of a hollow steel pipe 1-1 and a first square steel plate 1-2, and the hollow steel pipe 1-1 is welded to the first square steel plate 1-2 in the center, and a first round hole 1-2-1 is provided in the center of the first square steel plate 1-2 within the cavity of the hollow steel pipe 1-1.

[0022] The water-cooled seismic isolation rubber bearing 2 is composed of a water distribution frame 2-1, a second square steel plate 2-2, a nozzle 2-3, an upper enclosure 2-4, a rubber body 2-5, a lower enclosure 2-6, a third square plate 2-7, and a water conduit 2-8. The water distribution frame 2-1 has a rectangular outer frame 2-1-1 of the same height and four water conduit inner frames 2-1-2, which are flat and hollow, and have an equilateral L-shape.

[0023] The L-shaped legs of the four water-conducting inner frames 2-1-2 are arranged in order at equal intervals on a plane, so that the inner and outer planar contours of the four water-conducting inner frames 2-1-2 as a whole are square, and the whole is aligned in the center and welded to the center on the second square steel plate 2-2. A rectangular outer frame 2-1-1 is welded to the upper periphery of the second square steel plate 2-2, and a water diversion channel 2-2-2 is defined between the outsides of the four water conveyance inner frames 2-1-2 and the inside of the rectangular outer frame 2-1-1. A plurality of nozzle mounting holes 2-2-3 are provided at intervals in the second square steel plate 2-2 of the water diversion channel 2-2-2, which runs around the inside of the rectangular outer frame 2-1-1, and nozzles 2-3 are screwed or welded to each of the plurality of nozzle mounting holes 2-2-3. An upper enclosure 2-4 is welded to the lower periphery of the second square steel plate 2-2, a lower enclosure 2-6 is welded to the upper periphery of the third square plate 2-7, a water conveyance pipe 2-8 is screwed or welded to the water conveyance hole 2-7-1 in the third square plate 2-7, and a rubber body 2-5 is provided in the center between the second square steel plate 2-2 and the third square plate 2-7.

[0024] At the site, the water-cooled seismic isolation rubber bearing 2 is attached to the substructure 3, the discharge end of the water-conducting pipe 2-8 connected to the third square plate 2-7 is protruded from the substructure 3, the first square steel plate 1-2 of the water-cooled hollow steel pipe 1 is lifted and welded onto the rectangular outer frame 2-1-1 of the water-cooled seismic isolation rubber bearing 2, the four water-conducting inner frames 2-1-2 in the water-cooled seismic isolation rubber bearing 2 and the bottom of the first square steel plate 1-2 are sealed with a sealant or rubber ring and butted together, and the first square steel plate 1-2 and the second square steel plate 2-2 are butted together. A sealed water distribution channel 2-2-2 is defined between the rectangular outer frame 2-1-1 and the water distribution channel 2-2-2, and four water-free spaces 2-2-1 are defined inside the first square steel plate 1-2, the second square steel plate 2-2 and the four water-conducting inner frames 2-1-2, and the water-cooled hollow steel pipe 1, the first round hole 1-2-1, the water distribution channel 2-2-2 and the multiple nozzles 2-3 are connected to each other. The upper enclosure 2-4 and the lower enclosure 2-6 are arranged correspondingly, and the peripheral elevations of the upper enclosure 2-4 and the lower enclosure 2-6 are parallel to each other.

[0025] The nozzle 2-3 is a fan-shaped nozzle, and the fan-shaped water jetted from the surrounding nozzles 2-3 is parallel to the surrounding elevation of the lower enclosure 2-6.

[0026] The rubber body 2-5 is a cube or cylinder, and is made by sandwiching a steel plate edged with an even number of rubber rings between odd number of rubber pads, bonding them together, and vulcanizing them.

[0027] Example 1 The method for realizing a combined structure of a water-protected hollow steel pipe and seismic isolation rubber bearings includes the following steps: connecting the upper part of the hollow steel pipe 1-1 to a fire sprinkler pipe on a daily basis.

[0028] S1: After the earthquake, the horizontal displacement deformation of the rubber body is reset. After the immediate fire or direct fire occurs, the fire pump unit is turned on to inject water into the hollow steel pipe 1-1. After the hollow steel pipe 1-1 is rapidly filled, a flowing, cooling solid water column is formed, and the water pressure is maintained and stabilized at 0.30 MPa (end pressure). The water in the hollow steel pipe 1-1 enters the water distribution channel 2-2-2 through the first round hole 1-2-1 and is sprayed uniformly from multiple nozzles 2-3 simultaneously. The fan-shaped water sprayed by the multiple nozzles 2-3 flows into the upper enclosure 2-4, the lower enclosure 2-6 and the rubber body. A water film / water spray heat insulating protective layer is formed in the space defined by the surrounding elevation of 2-5, and under the above-mentioned stable water pressure, in the event of a localized or outdoor fire in a large space with a stable heat generation rate of 8.0 MW or less, the surface of the hollow steel pipe 1-1 will not exceed 150°C at any time, and the surface layer and contact surface of the rubber body 2-5 will not exceed 110°C, ensuring that the load-bearing capacity of the hollow steel pipe 1-1 will not be reduced and that the rubber material of the rubber body 2-5 will not be deformed in any way, and the water collected in the lower enclosure 2-6 will be completely discharged through the water conduit 2-8.

[0029] S2: After the fire is extinguished, pressurized dry air is blown into the hollow steel pipe 1-1, and the air pressure is maintained and stabilized at 0.15 MPa (terminal pressure). The air inside the hollow steel pipe 1-1 enters the water distribution channel 2-2-2 through the first round hole 1-2-1 and is sprayed out uniformly simultaneously from multiple nozzles 2-3, completely drying the space defined by the surrounding elevations of the upper enclosure 2-4, lower enclosure 2-6, and rubber body 2-5, as well as the water distribution channel 2-2-2 and the hollow steel pipe 1-1.

[0030] Through the above steps, the combined structure of hollow steel pipes and seismic isolation rubber bearings can be fully protected from post-earthquake fires and direct fires, and the lifespan of the combined structure system can be improved.

Claims

1. A combined structure of a water-protected hollow steel pipe (1) and a seismic isolation rubber bearing, which includes a water-cooled hollow steel pipe (1) and a substructure (3), and further includes a water-cooled seismic isolation rubber bearing (2), The water-cooled seismic isolation rubber bearing (2) comprises four water-conducting inner frames (2-1-2) and a rectangular outer frame (2-1-1) fixed on a second square steel plate (2-2), and defines a water diversion channel (2-2-2) between the outer sides of the four water-conducting inner frames (2-1-2) and the inside of the rectangular outer frame (2-1-1). The second square steel plate (2-2) is fixed to the four water-conducting inner frames (2-1-2) and the rectangular outer frame (2-1-1). The water-cooled hollow steel pipe (1) is connected to the first rectangular steel plate (1-2) of the water-cooled hollow steel pipe (1) through a water-cooled hollow steel pipe (2-1-1), and nozzles (2-3) are attached to a plurality of nozzle attachment holes (2-2-3) provided at intervals on the second rectangular steel plate (2-2) of the water distribution channel (2-2-2) that runs around the inside of the rectangular outer frame (2-1-1), and an upper enclosure (2-4) is fixed below the second rectangular steel plate (2-2). A lower enclosure (2-6) is fixed on the third square plate (2-7), a water guide hole (2-7-1) of the third square plate (2-7) is fixed to one end of a water guide pipe (2-8), and a rubber body (2-5) is provided between the second square steel plate (2-2) and the third square plate (2-7). The third square plate (2-7) is connected to the substructure (3), and the other end of the water conduit (2-8) extends from the substructure (3), and the water-cooled hollow steel pipe (1), the water distribution channel (2-2-2) and the plurality of nozzles (2-3) are connected to each other. The water-cooled hollow steel pipe (1) comprises a hollow steel pipe (1-1) and the first square steel plate (1-2), the hollow steel pipe (1-1) is fixed on the first square steel plate (1-2) with its center aligned, and a first round hole (1-2-1) is provided in the center of the first square steel plate (1-2) in the cavity of the hollow steel pipe (1-1). This is a combined structure of a water-protected hollow steel pipe and seismic isolation rubber bearings.

2. 2. The combined structure of a water protection type hollow steel pipe and seismic isolation rubber bearing according to claim 1, characterized in that the water conveying inner frame (2-1-2) has a hollow, equilateral L-shape in plan view, and the L-shaped legs of the four water conveying inner frames (2-1-2) are arranged in order at equal intervals on the plane, so that the inner and outer planar contours of the entire four water conveying inner frames (2-1-2) present a square shape.

3. The first rectangular steel plate (1-2), the second rectangular steel plate (2-2), the rectangular outer frame (2-1-1) and the diversion channel (2-2-2) define a sealed diversion channel (2-2-2), The first rectangular steel plate (1-2), the second rectangular steel plate (2-2), and the four water-conducting inner frames (2-1-2) define four waterless spaces (2-2-1).

2. The combined structure of the water-protected hollow steel pipe and seismic isolation rubber bearing according to claim 1.

4. The combined structure of water-protected hollow steel pipes and seismic isolation rubber bearings according to claim 1, characterized in that the upper enclosure (2-4) and the lower enclosure (2-6) are arranged correspondingly, and the peripheral elevations of the upper enclosure (2-4) and the lower enclosure (2-6) are parallel to each other.

5. The combined structure of a water-protected hollow steel pipe and seismic isolation rubber bearing as described in claim 1, characterized in that the nozzle (2-3) is a fan-shaped nozzle, and the fan-shaped water sprayed from the surrounding multiple nozzles (2-3) is each parallel to the surrounding elevation of the lower enclosure (2-6).

6. The combined structure of the water-protected hollow steel pipe and seismic isolation rubber bearing according to claim 1, characterized in that the rubber body (2-5) is a cube or a cylinder.

7. A method for realizing a combined structure of the water-protected hollow steel pipe and seismic isolation rubber bearing according to claim 6, comprising: Step S1: After the earthquake, the horizontal displacement deformation of the rubber body (2-5) is reset, and immediately after the fire or directly after the fire occurs, water is poured into the hollow steel pipe (1-1), the hollow steel pipe (1-1) is rapidly filled, and a flowing, cooling solid water column is formed, and the water pressure is maintained in the range of 0.25 to 0.5 MPa. The water in the hollow steel pipe (1-1) enters the water distribution channel (2-2-2) through the first round hole (1-2-1) and is sprayed uniformly simultaneously from the multiple nozzles (2-3). The fan-shaped water sprayed from the multiple nozzles (2-3) forms a water film / water spray heat insulating protective layer in the space defined by the upper enclosure (2-4), the lower enclosure (2-6) and the surrounding elevation of the rubber body (2-5), and the water collected in the lower enclosure (2-6) is discharged through the water conduit (2-8). After the fire is extinguished, pressurized dry air is blown into the hollow steel pipe (1-1) and the air pressure is maintained in the range of 0.1 to 0.3 MPa. The air in the hollow steel pipe (1-1) enters the water diversion channel (2-2-2) through the first round hole (1-2-1) and is uniformly ejected from the plurality of nozzles (2-3) simultaneously, drying the space defined by the surrounding elevations of the upper enclosure (2-4), the lower enclosure (2-6), and the rubber body (2-5), the water diversion channel (2-2-2), and the hollow steel pipe (1-1). Step S2. A method for realizing a combined structure of a water-protected hollow steel pipe and a seismic isolation rubber bearing, characterized by having the following.

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