Fireproof steel structure for building and mounting method

Abstract

The invention discloses a fireproof steel structure for a building and a mounting method, the steel structure comprises a bearing stand column, a connecting cross beam and a connecting node, the bearing stand column adopts H-shaped profile steel, water storage tanks are arranged on two sides of the bearing stand column, connecting pipes are arranged at the top and the bottom of each water storage tank, and fire extinguishing pipes are further arranged on two sides of the bearing stand column; a circulating channel is further arranged in the water storage tank, penetrates through the water storage tank and is isolated from the interior of the water storage tank, the connecting cross beam is fixed to one side of the bearing stand column through a connecting node, a heat dissipation pipe is arranged at the top of the connecting cross beam, and a fire fighting pipe and a spraying pipe are fixedly connected to the bottom of the connecting cross beam; and the surface of the fire-fighting pipe communicates with a fire-fighting spray head, and the surface of the spray pipe communicates with an atomization spray head. According to the fireproof steel structure for the building and the mounting method, through unique cavity design and a graded triggering mechanism, the fire resistance is remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of construction engineering, in particular to a fireproof steel structure for construction and an installation method thereof. Background Art

[0002] In the field of construction, steel structures are widely used due to their high strength and convenient construction. Traditional steel structure buildings have the defects of low fire resistance and dependence on external fire protection systems. When a fire occurs, the temperature of the steel structure rises rapidly, which will cause a sharp decline in mechanical properties and even deformation and collapse. Existing fireproof steel structures usually adopt the method of external fireproof coating or additional installation of fire sprinkler systems. Publication No. CN110629874B discloses a fireproof steel structure for construction. By providing a fireproof coating, a thermal insulation layer and a cavity pipe, it can effectively prevent fire and resist high temperature, thereby increasing the fire resistance time and providing valuable time for disaster relief and fire fighting. However, relying solely on external water spraying for cooling cannot actively protect the integrity of the structure; after the internal pipe leaks, the entire structure needs to be dismantled for inspection. Summary of the Invention

[0003] (1) Technical problems solved

[0004] In response to the shortcomings of the existing technology, the present invention provides a fireproof steel structure for construction and an installation method, which significantly improves the fire resistance through a unique cavity design and a graded triggering mechanism.

[0005] (2) Technical solution

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a fireproof steel structure for construction, comprising a load-bearing column, a connecting beam and a connecting node, the load-bearing column adopts H-shaped steel, water tanks are provided on both sides of the load-bearing column, connecting pipes are provided on the top and bottom of the water tank, fire extinguishing pipes are also provided on both sides of the load-bearing column, both ends of the fire extinguishing pipes extend to the outside of the water tank, a circulation channel is also provided in the water tank, the circulation channel passes through the water tank and is isolated from the inside of the water tank, mounting holes are provided at both ends of the load-bearing column, the connecting beam is fixed to one side of the load-bearing column through the connecting node, a heat dissipation pipe is provided on the top of the connecting beam, a fire pipe and a sprinkler pipe are fixedly connected to the bottom of the connecting beam, the surface of the fire pipe is connected to a fire sprinkler head, and the surface of the sprinkler pipe is connected to an atomizing nozzle;

[0007] The adjacent bearing columns in the vertical direction are fixed by a connection node, a three-way pipe head 1 is connected between two adjacent connecting pipes, a four-way pipe head is connected between two adjacent circulation channels, a three-way pipe head 2 is connected between two adjacent fire extinguishing pipes, and one end of the fire fighting pipe is connected to the three-way pipe head 2;

[0008] One end of the four-way pipe head is connected to a first valve, and the other end of the four-way pipe head is connected to a second valve. The outlet end of the first valve is connected to one end of the heat dissipation pipe, and the other end of the heat dissipation pipe is connected to one end of the three-way pipe head. The outlet end of the second valve is connected to one end of the spray pipe.

[0009] A circulation pump is provided on one side of the bottom end of the supporting column of the bottom layer. The water inlet end of the circulation pump is communicated with the connecting pipe, and the water outlet end of the circulation pump is communicated with the circulation channel.

[0010] Preferably, the three-way pipe head provided on the top of the bearing column on the top layer is changed to a two-way pipe head, and the four-way pipe head is changed to a three-way pipe head.

[0011] Preferably, the first valve is a normally open solenoid valve, and the second valve is a normally closed solenoid valve.

[0012] Preferably, it further comprises a rain collecting trough, the bottom of which is connected to a three-way pipe head provided on the top of the supporting column.

[0013] Preferably, a high-pressure tank is further provided on one side of the supporting column, one end of the high-pressure tank is connected to one end of a fire extinguishing pipe at the bottom of the bottom supporting column, and carbon dioxide gas is provided in the high-pressure tank.

[0014] Preferably, the heat dissipation pipe is a metal pipe and is fixed on the top of the connecting beam in an S shape.

[0015] Preferably, the system further comprises a controller and a smoke sensor, wherein the smoke sensor is communicatively connected to the controller, and the first valve, the second valve and the circulation pump are electrically connected to the controller.

[0016] A method for installing the fireproof steel structure for construction as described above comprises the following steps:

[0017] Step 1: Vertical assembly of the bearing columns. Anchor the bottom bearing columns to the foundation surface through the mounting holes. Between the water tanks of adjacent bearing columns: connect the two ends of the connecting pipe through the tee pipe connector 1, connect the two ends of the circulation channel through the four-way pipe connector, and connect the two ends of the fire extinguishing pipe through the tee pipe connector 2. Continue to the top floor. Change the tee pipe connector 2 on the top floor to a two-way pipe connector, and change the four-way pipe connector to a tee pipe connector.

[0018] Step 2: Horizontally install the connecting beam. Fix the connecting beam to the side of the supporting column through the connecting node. Connect one end of the heat dissipation pipe to the first valve and the other end to the first three-way pipe head. Connect one end of the sprinkler pipe to the second valve and the fire hose to the second three-way pipe head.

[0019] Step 3: Pipe system integration: Connect the water inlet of the circulation pump to the connecting pipe at the bottom load-bearing column, connect the water outlet of the circulation pump to the circulation channel, connect one end of the high-pressure tank to the bottom fire extinguishing pipe, and connect the bottom of the rainwater collecting trough to the top three-way pipe head;

[0020] Step 4: Control system wiring: Connect the smoke sensor, first valve, second valve, and circulation pump to the controller respectively.

[0021] Preferably, in step 1, the connecting pipe is connected by a socket-type sealing ring, and the fire extinguishing pipe is connected by a high-pressure clamp joint.

[0022] Preferably, before executing step 3, water is added to the water tank and pressurized to 0.05 MPa, and the pressure is maintained for minutes to detect leakage; nitrogen is filled into the fire extinguishing pipe to 1.8 MPa, and soapy water is used to detect leakage.

[0023] (3) Beneficial effects

[0024] The present invention provides a fireproof steel structure for construction, which has the following beneficial effects:

[0025] 1. Fire protection and structural integration: H-shaped steel columns are integrated with water tanks and fire protection pipes to reduce space occupation, simplify construction procedures and reduce costs.

[0026] 2. Automatic fire extinguishing response: The smoke sensor is linked to the solenoid valve and circulation pump, which can automatically start at the early stage of fire without external power supply, improving system reliability.

[0027] 3. Three-dimensional fire prevention mechanism: Water from the water tank is sprayed through fire sprinklers and atomizing nozzles to extinguish fires. The heat dissipation pipes and circulation channels form a water circulation system for cooling. The high-pressure tank provides gas for fire extinguishing. Multiple protections improve fire prevention efficiency.

[0028] 4. Water source sustainability: Rainwater collection gutters collect rainwater to replenish water storage tanks, reducing dependence on municipal water supply, especially suitable for areas with water shortages.

[0029] 5. Structural stability: The H-shaped steel columns and connecting beams are rigidly connected through nodes. The fixation of the water tank and the columns enhances the overall anti-lateral displacement capability and meets the seismic requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 This is a schematic diagram of the structure after the load-bearing columns and connecting beams of the present invention are installed;

[0032] Figure 3 This is a schematic diagram of the three-dimensional structure of the load-bearing column of the present invention;

[0033] Figure 4This is a schematic diagram of the end surface structure of the load-bearing column of the present invention;

[0034] Figure 5 This is a schematic diagram of the end surface structure of the connecting beam of the present invention;

[0035] Figure 6 This is a connection diagram of the fire extinguishing system of the present invention;

[0036] Figure 7 This is a schematic diagram of the connection of the spray and heat dissipation system of the present invention;

[0037] Figure 8 For the present invention Figure 7 Enlarged view of point A in the middle.

[0038] In the figure: 1-bearing column, 101-water tank, 102-fire extinguishing pipe, 103-connecting pipe, 104-circulation channel, 105-mounting hole, 2-connecting beam, 201-fire pipe, 202-sprinkler pipe, 203-heat dissipation pipe, 204-fire sprinkler, 205-atomizing nozzle, 3-connection node, 4-three-way pipe head 1, 5-four-way pipe head, 6-first valve, 7-second valve, 8-circulating pump, 9-three-way pipe head 2, 10-rainwater collecting trough, 11-, 12-controller, 13-smoke sensor. DETAILED DESCRIPTION

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0040] See also Figure 1-8 The present invention provides a technical solution: a fireproof steel structure for construction, comprising a load-bearing column 1, a connecting beam 2 and a connecting node 3. The load-bearing column 1 adopts H-shaped steel. Water tanks 101 are provided on both sides of the load-bearing column 1. The water tanks 101 are formed by welding steel plates to the edges of the load-bearing column 1. The length of the water tank 101 accounts for 80-95% of the overall length of the load-bearing column 1, leaving space for the installation of the connecting node 3.

[0041] The top and bottom of the water tank 101 are both provided with connecting pipes 103, and fire extinguishing pipes 102 are also provided on both sides of the supporting column 1. The fire extinguishing pipes 102 are fixed through the connection with the water tank 101. Both ends of the fire extinguishing pipes 102 extend to the outside of the water tank 101. The length of the fire extinguishing pipes 102 extending from the surface of the water tank 101 is greater than the length of the connecting pipes 103, so as to avoid inconvenience in installing the connecting pipe heads when the lengths are the same.

[0042] A circulation channel 104 is also provided in the water tank 101. The circulation channel 104 runs through the water tank 101 and is isolated from the inside of the water tank 101. That is, a separate steel pipe is provided for the circulation channel 104 to be fixed to the water tank 101, and mounting threads are provided at both ends of the circulation channel 104.

[0043] Mounting holes 105 are provided at both ends of the supporting column 1. The connecting beam 2 is fixed to one side of the supporting column 1 through the connecting node 3. A heat dissipation pipe 203 is provided on the top of the connecting beam 2. The heat dissipation pipe 203 is a metal pipe and is fixed to the top of the connecting beam 2 in an S shape. The circulating water inside the heat dissipation pipe 203 takes away the heat from the surface of the connecting beam 2, thereby achieving heat dissipation of the connecting beam 2 and preventing high temperature from affecting the overall rigidity.

[0044] A fire-fighting pipe 201 and a sprinkler pipe 202 are fixedly connected to the bottom of the connecting beam 2. The surface of the fire-fighting pipe 201 is connected to a fire-fighting nozzle 204, and the surface of the sprinkler pipe 202 is connected to an atomizing nozzle 205. The fire-fighting nozzle 204 adopts an existing commercially available part, which automatically expands and bursts at high temperatures, so as to meet the requirements of automatic opening in a high-temperature environment.

[0045] Adjacent supporting columns 1 in the vertical direction are fixed by connection nodes 3. A three-way pipe head 4 connects two adjacent connecting pipes 103, a four-way pipe head 5 connects two adjacent circulation channels 104, and a three-way pipe head 9 connects two adjacent fire extinguishing pipes 102. One end of the fire fighting pipe 201 is connected to the three-way pipe head 9. A high-pressure tank 11 is also installed on one side of the supporting column 1. One end of the high-pressure tank 11 is connected to one end of the fire extinguishing pipe 102 at the bottom of the supporting column 1 on the ground floor. The high-pressure tank 11 is filled with carbon dioxide gas. The carbon dioxide gas in the high-pressure tank 11 is used to extinguish the fire on site.

[0046] One end of the four-way pipe head 5 is connected to the first valve 6, and the other end of the four-way pipe head 5 is connected to the second valve 7. The outlet end of the first valve 6 is connected to one end of the heat dissipation pipe 203, and the other end of the heat dissipation pipe 203 is connected to one end of the three-way pipe head 4, and the outlet end of the second valve 7 is connected to one end of the spray pipe 202; the three-way pipe head 29 located at the top of the top-level supporting column 1 is changed to a two-way pipe head, and the four-way pipe head 5 is changed to a three-way pipe head.

[0047] A circulation pump 8 is installed at the bottom end of the bottom support column 1. The water inlet of the circulation pump 8 is connected to the connecting pipe 103, and the water outlet of the circulation pump 8 is connected to the circulation channel 104. The first valve 6 is a normally open solenoid valve, and the second valve 7 is a normally closed solenoid valve. When the circulation pump 8 is activated, heat is dissipated through the heat dissipation pipe 203. When the fire is large, the second valve 7 can be opened to spray the fire with the atomizing nozzle 205 for firefighting.

[0048] It also includes a rain collecting trough 10, the bottom of which is connected to a three-way pipe head 4 provided on the top of the supporting column 1. A protective net is provided at the bottom of the rain collecting trough 10 to prevent impurities from entering. The water tank 101 can also be connected to a fire-fighting pipe to achieve continuous water supply.

[0049] It also includes a controller 12 and a smoke sensor 13. The smoke sensor 13 is communicatively connected to the controller 12. The first valve 6, the second valve 7 and the circulation pump 8 are electrically connected to the controller 12. The controller 12 is used to control the working status of the first valve 6, the second valve 7 and the circulation pump 8.

[0050] A method for installing a fireproof steel structure for a building comprises the following steps:

[0051] Step 1: Vertical assembly of the supporting columns 1. Anchor the bottom supporting columns 1 on the foundation surface through the mounting holes 105. Between the water tanks 101 of adjacent supporting columns 1: connect the two ends of the connecting pipe 103 through the three-way pipe joint 1 4, connect the two ends of the circulation channel 104 through the four-way pipe joint 5, and connect the two ends of the fire extinguishing pipe 102 through the three-way pipe joint 2 9 until the top floor. Change the three-way pipe joint 2 9 to a two-way pipe joint, and change the four-way pipe joint 5 to a three-way pipe joint;

[0052] Step 2: Horizontally install the connecting beam 2 and fix it to the side of the supporting column 1 through the connecting node 3. Connect one end of the heat dissipation pipe 203 to the first valve 6 and the other end to the three-way pipe connector 1 4. Connect one end of the sprinkler pipe 202 to the second valve 7 and the fire protection pipe 201 to the three-way pipe connector 2 9.

[0053] Step 3: Pipeline system integration: Connect the water inlet of the circulation pump 8 to the connecting pipe 103 at the bottom supporting column 1, connect the water outlet of the circulation pump 8 to the circulation channel 104, connect one end of the high-pressure tank 11 to the bottom fire extinguishing pipe 102, and connect the bottom of the rainwater collecting trough 10 to the top three-way pipe head 4;

[0054] Step 4: Control system wiring: Connect the smoke sensor 13, the first valve 6, the second valve 7, and the circulation pump 8 to the controller 12 respectively.

[0055] In step 1, the connecting pipe 103 is connected by a socket-type sealing ring, and the fire extinguishing pipe 102 is connected by a high-pressure clamp joint.

[0056] Before executing step 3, fill the water storage tank 101 with water and pressurize it to 0.6 MPa, maintain the pressure for 30 minutes to check for leaks; fill the fire extinguishing pipe 102 with nitrogen to 1.8 MPa, and check for leaks with soapy water.

[0057] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

[0058] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A fireproof steel structure for construction, characterized by: The invention comprises a bearing column (1), a connecting crossbeam (2) and a connecting node (3), wherein the bearing column (1) is made of H-shaped steel, a water tank (101) is provided on both sides of the bearing column (1), a connecting pipe (103) is provided on the top and bottom of the water tank (101), a fire extinguishing pipe (102) is also provided on both sides of the bearing column (1), both ends of the fire extinguishing pipe (102) extend to the outside of the water tank (101), a circulation channel (104) is also provided in the water tank (101), and the circulation channel (104) runs through the water tank (101). The water tank (101) is isolated from the interior of the water storage tank (101), both ends of the supporting column (1) are provided with mounting holes (105), the connecting crossbeam (2) is fixed to one side of the supporting column (1) through a connecting node (3), the top of the connecting crossbeam (2) is provided with a heat dissipation pipe (203), the bottom of the connecting crossbeam (2) is fixedly connected with a fire pipe (201) and a sprinkler pipe (202), the surface of the fire pipe (201) is connected to a fire sprinkler head (204), and the surface of the sprinkler pipe (202) is connected to an atomizing sprinkler head (205) The adjacent supporting columns (1) in the vertical direction are fixed by a connecting node (3); a three-way pipe head (4) is connected between two adjacent connecting pipes (103); a four-way pipe head (5) is connected between two adjacent circulation channels (104); a three-way pipe head (9) is connected between two adjacent fire extinguishing pipes (102); and one end of the fire fighting pipe (201) is connected to the three-way pipe head (9); One end of the four-way pipe head (5) is connected to a first valve (6), and the other end of the four-way pipe head (5) is connected to a second valve (7); the outlet end of the first valve (6) is connected to one end of the heat dissipation pipe (203), the other end of the heat dissipation pipe (203) is connected to one end of the three-way pipe head (4), and the outlet end of the second valve (7) is connected to one end of the spray pipe (202); A circulation pump (8) is provided on one side of the bottom end of the supporting column (1) at the bottom layer. The water inlet end of the circulation pump (8) is connected to the connecting pipe (103), and the water outlet end of the circulation pump (8) is connected to the circulation channel (104).

2. A fireproof steel structure for construction according to claim 1, characterized in that: The second three-way pipe head (9) provided on the top of the supporting column (1) at the top layer is changed into a two-way pipe head, and the four-way pipe head (5) is changed into a three-way pipe head.

3. The fireproof steel structure for construction according to claim 1, characterized in that: The first valve (6) is a normally open solenoid valve, and the second valve (7) is a normally closed solenoid valve.

4. A fireproof steel structure for construction according to claim 2, characterized in that: It also includes a rain collecting trough (10), the bottom of which is connected to a three-way pipe head (4) provided on the top of the supporting column (1).

5. The fireproof steel structure for construction according to claim 1, characterized in that: A high-pressure tank (11) is further provided on one side of the supporting column (1), one end of the high-pressure tank (11) is connected to one end of a fire extinguishing pipe (102) at the bottom of the bottom supporting column (1), and carbon dioxide gas is provided in the high-pressure tank (11).

6. The fireproof steel structure for construction according to claim 1, characterized in that: The heat dissipation pipe (203) is a metal pipe and is fixed on the top of the connecting beam (2) in an S-shape.

7. The fireproof steel structure for construction according to claim 1, characterized in that: The invention also includes a controller (12) and a smoke sensor (13), wherein the smoke sensor (13) is communicatively connected to the controller (12), and the first valve (6), the second valve (7) and the circulation pump (8) are electrically connected to the controller (12).

8. A method for installing a fireproof steel structure for construction according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step 1: Vertical assembly of the supporting columns (1), anchoring the bottom supporting columns (1) on the foundation surface through the mounting holes (105), between the water storage tanks (101) of the adjacent supporting columns (1): connecting the two ends of the connecting pipe (103) through the three-way pipe head (4), connecting the two ends of the circulation channel (104) through the four-way pipe head (5), connecting the two ends of the fire extinguishing pipe (102) through the three-way pipe head (9), until the top layer, the top three-way pipe head (9) is changed to a two-way pipe head, and the four-way pipe head (5) is changed to a three-way pipe head; Step 2: Horizontally install the connecting beam (2), fix the connecting beam (2) to the side of the supporting column (1) through the connecting node (3), connect one end of the heat dissipation pipe (203) to the first valve (6), and the other end to the three-way pipe head (4), connect one end of the spray pipe (202) to the second valve (7), and connect the fire hose (201) to the three-way pipe head (9); Step 3: Pipeline system integration: connect the water inlet of the circulation pump (8) to the connecting pipe (103) at the bottom supporting column (1), connect the water outlet of the circulation pump (8) to the circulation channel (104), connect one end of the high-pressure tank (11) to the bottom fire extinguishing pipe (102), and connect the bottom of the rainwater collecting trough (10) to the top three-way pipe head (4); Step 4: Control system wiring: connect the smoke sensor (13), the first valve (6), the second valve (7), and the circulation pump (8) to the controller (12) respectively.

9. The method for installing a fireproof steel structure for construction according to claim 8, characterized in that: In step 1, the connecting pipe (103) is connected by a socket-type sealing ring, and the fire extinguishing pipe (102) is connected by a high-pressure clamp joint.

10. The method for installing a fireproof steel structure for construction according to claim 8, characterized in that: Before executing step 3, water is injected into the water storage tank (101) and pressurized to 0.6 MPa, and the pressure is maintained for 30 minutes to detect leakage; nitrogen is filled into the fire extinguishing pipe (102) to 1.8 MPa, and soapy water is used to detect leakage.

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