Combined 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 used in the seismic isolation field for buildings, structures, and equipment. They are a type of structural component with seismic isolation function, and their core component, the rubber body, is made by sequentially laminating steel plates and vulcanized rubber.

[0003] When horizontal displacement occurs due to earthquake action, the deformation can become large and reach the height of the support. In addition, rubber materials have a low softening temperature, so they are easily damaged when exposed to fire, posing a danger to the superstructure and equipment. Therefore, it was necessary to prevent fires and secondary fires caused by earthquakes through fire protection design.

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

[0005] The prior art has made many developments in fire-resistant coating structures, especially in the deformation adaptability of coating structures, such as Patent Document 1, Patent Document 2, Patent Document 3, Patent Document 4, Patent Document 5, Patent Document 6, Patent Document 7, Patent Document 8, etc. However, most of them are conceptual designs, and the reliability of construction applications is obviously insufficient, such as hard materials are brittle, and soft cotton felt is easy to tear when it absorbs moisture, etc., so although some people hope for the repair of fire-resistant coating structures after earthquakes, they cannot directly prevent fire accidents caused by earthquakes throughout their full life cycle.

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

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

[0008] The use of water-cooling 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 components from fire. For example, Patent Document 9 is used to protect aluminum alloy plate joints, Patent Documents 10 and 11 disclose annular sprinkler pipes used to cool and reduce the temperature of the outer elevation of a petrochemical storage tank (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 a seismic isolation rubber bearing due to the need for fire protection of the seismic isolation rubber bearing that supports an LNG storage tank, and when there is a sufficient amount of water, the annular water curtain formed can prevent the spread of flames to the rubber layer of the seismic isolation bearing, thereby achieving 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. 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 still exists the problem that a large amount of water increases the load on the system and reduces 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 [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 covered 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 protection technology to fire prevention of this type of functional combined component is still lacking, 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 pipe and seismic isolation rubber bearing from fire and post-earthquake fire. The buildings, structures, storage tanks, containers and other facilities using this technical means can greatly improve the safety during fire and post-earthquake fire, and realize the maximum intensive utilization of water resources, especially the application in coastal areas and marine structures further shows considerable economic benefits in the full life cycle, improve the inherent fire safety of buildings, structures and equipment structures, and help reduce the damage of collapse caused by fire. [Means for solving the problem]

[0012] The technical means adopted by the present invention is a combination structure of a water-cooled hollow steel pipe, a water-protected hollow steel pipe with a substructure, and a seismic isolation rubber bearing, further comprising a water-cooled seismic isolation rubber bearing, the water-cooled seismic isolation rubber bearing having four water-conducting inner frames and a rectangular outer frame fixed on a second rectangular steel plate, defining a water distribution channel between the outside of the four water-conducting inner frames and the inside of the rectangular outer frame, the second rectangular steel plate is connected to the first rectangular steel plate of the water-cooled hollow steel pipe through the four water-conducting inner frames and the rectangular outer frame, Nozzles are attached in 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 and 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 lower structure, and the other end of the water conduit extends from the lower structure, connecting the water-cooled hollow steel pipe, the water distribution channel, and the plurality of nozzles.

[0013] A method for realizing a combined structure of a water-protected hollow steel pipe and a seismic isolation rubber bearing, comprising: Step S1: after the earthquake, the horizontal displacement deformation of the rubber body is reset, and after the immediate 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 0.25-0.5MPa. The water in the hollow steel pipe enters the water distribution channel from the first round hole and is uniformly sprayed out from multiple nozzles at the same time. The fan-shaped water sprayed out by the multiple nozzles forms a water film / water spray insulation protection layer in the space defined by the upper enclosure, the lower enclosure and the surrounding elevation of the rubber body, and the water collected in the lower enclosure is discharged from the water conveyance pipe; and After the fire is extinguished, pressurized dry air is blown into the hollow steel pipe, the air pressure being maintained in the range of 0.1 to 0.3 MPa, and the air inside the hollow steel pipe enters the water diversion channel from the first round hole and is sprayed uniformly simultaneously from the multiple nozzles to dry the space defined by the upper enclosure, the lower enclosure, and the surrounding elevations of the rubber body, as well as the inside of the water diversion channel and the inside of the hollow steel pipe. Effect of the Invention

[0014] The combined structure of the integrated water-protected hollow steel pipe and seismic isolation rubber bearing of the present invention has high reliability in preventing fires and post-earthquake fires, is technically feasible, meets current engineering needs and technological development trends, is applicable to a wide variety of buildings, structures and equipment, and has the characteristics of wide regional application through intensive use of water resources. For buildings with high fire resistance requirements, the usable area within the house is greatly increased, and for structures, the aesthetics and convenience of use are improved. The realization method takes into account both during and after disasters, and scientifically and rationally improves the practical service life of the combined structure.

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

[0016] Through an effective water film / water spray insulation protective layer (protective space) consisting of the structural design of the water diversion channel, multiple nozzles, upper enclosure, lower enclosure and the surrounding elevation of the rubber body, 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 the fire-resistant coating structure of conventional technology.

[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 the conservation of water resources and creating considerable economic benefits.

[0018] The present invention further enhances the intrinsic safety of fire and post-earthquake fire prevention and control of the combined structure consisting of seismic isolation rubber bearings and hollow steel pipes, solves the actual needs of environmental protection in which the amount of water resources used for firefighting and rescue is large and recycling is urgently required, and the protective effect can be achieved with very low water / air pressure, completely saving energy, and bringing great social, public safety and economic benefits. [Brief description of the drawings]

[0019] [Figure 1] 1 is a schematic overall configuration diagram of the present invention; [Diagram 2] FIG. 2 is a schematic exploded view of the overall structure of the present invention. [Diagram 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] FIG. 2 is a schematic top view of the water diversion channel structure of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] As shown in Figure 1, this is a combined structure of a water-protected hollow steel pipe and seismic isolation rubber bearing, which comprises a water-cooled hollow steel pipe 1 and a substructure 3, and further comprises a water-cooled seismic isolation rubber bearing 2, and the water-cooled seismic isolation rubber bearing 2 is provided between a 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, the hollow steel pipe 1-1 is welded to the first square steel plate 1-2 in its 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 conveyance pipe 2-8. The water distribution frame 2-1 has a rectangular outer frame 2-1-1 of the same height and four water conveyance inner frames 2-1-2, which have a hollow equilateral L-shape in plan.

[0023] The L-shaped legs of the four water-conducting inner frames 2-1-2 are arranged in sequence at equal intervals on a flat surface so that the inner and outer planar contours of the four water-conducting inner frames 2-1-2 as a whole form a square. The whole is then centered and welded to the center of the top of the second rectangular 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, a water diversion channel 2-2-2 is defined between the outer sides of the four water conveying 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 that 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 conveying pipe 2-8 is screwed or welded to the water conveying hole 2-7-1 of 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 lower structure 3, the discharge end of the water-conducting pipe 2-8 connected to the third square plate 2-7 is protruded from the lower structure 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 lower part 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, 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, 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, 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 ejected from the surrounding nozzles 2-3 is parallel to the peripheral 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 bordered with an even number of rubber rings between an 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 bearing includes the following steps, in which the upper part of the hollow steel pipe 1-1 is connected to a fire sprinkler pipe on a daily basis.

[0028] S1: After the earthquake, the horizontal displacement deformation of the rubber body is reset, and immediately after the fire or directly after the fire occurs, the fire pump unit is turned on to inject water into the hollow steel pipe 1-1, and the hollow steel pipe 1-1 is rapidly filled, and then a flowing cooling solid water column is formed, and the water pressure is maintained and stabilized at 0.30 MPa (terminal pressure). The water in the hollow steel pipe 1-1 enters the water distribution channel 2-2-2 from the first round hole 1-2-1, and is sprayed uniformly from multiple nozzles 2-3 at the same time. 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 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 fire in a large space or outdoors 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 no degeneration will occur in the rubber material of the rubber body 2-5, and the water collected in the lower enclosure 2-6 will be completely discharged from 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 (end pressure). The air inside the hollow steel pipe 1-1 enters the water distribution channel 2-2-2 from the first round hole 1-2-1 and is sprayed uniformly simultaneously from multiple nozzles 2-3, completely 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, as well as the water distribution channel 2-2-2 and the hollow steel pipe 1-1.

[0030] Through the above steps, the whole process and full life cycle insulation protection of the combined structure of the hollow steel pipe and seismic isolation rubber bearing from post-earthquake fire and direct fire is achieved, and the service life of the combined structure system is improved.

Claims

1. A combination structure of a water-protected hollow steel pipe (1) and a seismic isolation rubber bearing, the combination structure including a water-cooled hollow steel pipe (1) and a substructure (3), and further including 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 rectangular steel plate (2-2), and defines a water distribution channel (2-2-2) between the outer sides of the four water-conducting inner frames (2-1-2) and between the inner side of the rectangular outer frame (2-1-1). The second rectangular 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), 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 corner plate (2-7) is connected to the lower structure (3), and the other end of the water guide pipe (2-8) is extended from the lower structure (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. This is a combined structure of a water-protected hollow steel pipe and a seismic isolation rubber bearing.

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

3. A sealed diversion channel (2-2-2) is defined between 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), 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) inside. A combined structure of the water-protected hollow steel pipe and seismic isolation rubber bearing according to claim 1.

4. 2. The combined structure of a water-protected hollow steel pipe and seismic isolation rubber bearing according to claim 1, characterized in that 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) in line with its 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).

5. The combination structure of water-protected hollow steel pipe and seismic isolation rubber bearing as described in 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.

6. 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 out from the surrounding multiple nozzles (2-3) is each parallel to the surrounding elevation of the lower enclosure (2-6).

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

8. A method for realizing a combined structure of the water-protected hollow steel pipe and seismic isolation rubber bearing according to claim 7, Step S1: after an earthquake, the horizontal displacement deformation of the rubber body (2-5) is reset, and immediately after a fire or directly after a fire occurs, water is poured into the hollow steel pipe (1-1) to rapidly fill the hollow steel pipe (1-1), forming a flowing cooling solid water column, and maintaining the water pressure 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 uniformly sprayed out simultaneously from the multiple nozzles (2-3); the fan-shaped water sprayed out by the multiple nozzles (2-3) forms a thermal insulation protective layer of water film / water spray 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 guide pipe (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 within a range of 0.1 to 0.3 MPa. The air in the hollow steel pipe (1-1) enters the water distribution channel (2-2-2) from the first round hole (1-2-1) and is uniformly ejected simultaneously from the plurality of nozzles (2-3) to dry the space defined by the peripheral elevations of the upper enclosure (2-4), the lower enclosure (2-6) and the rubber body (2-5), the water distribution 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, comprising:

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