A method for setting fire doors in narrow spaces of mechanical communication passages

Abstract

The present invention provides a method for setting a fire door in a narrow space of a mechanical communication channel. A steel pipe segment ring is set at the position where the fire door is installed in the communication channel to ensure that the four corners of the fire door hole are located in the steel pipe segment cavity; after the steel pipe segment ring at the fire door is installed, a fire door stack is set around the fire door hole; the steel bar skeleton of the fire door stack is tied, the contact position between the steel bar skeleton and the steel pipe segment ring is fixed by welding, and an embedded steel plate is set around the fire door hole, and the embedded steel plate and the steel bar skeleton are reliably welded and fixed; after the steel bar skeleton is tied and the embedded steel plate is welded and fixed, the fire door stack is cast, and the steel pipe segment cavity is densely filled with concrete, and the fire door is installed. The present invention meets the installation space requirements of the fire door by utilizing the steel pipe segment cavity space, so as to meet the purpose of setting a fire door that meets the standard requirements in the narrow space of the mechanical communication channel, and the evacuation direction can be linear evacuation, and the practicality and versatility are strong.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical communication channel construction, and in particular relates to a method for setting a fire door in a narrow space of a mechanical communication channel. Background Art

[0002] According to the "Metro Design Fire Protection Standard" (GB51298-2018), the "Building Fire Protection Design Code" (GB50016-2014) and local standards, it is clearly required that a Class A fire door with two parallel doors that open in opposite directions must be installed in the communication channel, and the net width of the fire door must be no less than 900mm.

[0003] At present, mechanical communication channels have been implemented in some cities in China. However, due to the limitation of the opening size of the main tunnel in the section, the clearance size in the communication channel cannot meet the requirement of installing two parallel fire doors with a net width of not less than 900mm. Installing fire doors in the narrow space of the mechanical communication channel has become a difficulty in this type of project.

[0004] At present, most of the communication passages constructed by mechanical methods have insufficient net width of fire doors or non-linear evacuation directions, which is not conducive to the use of communication passages for personnel evacuation. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a method for setting fire doors in the narrow space of a mechanical communication channel. On the premise of meeting the construction requirements and structural safety of the mechanical communication channel, the method solves the difficult problem of setting two parallel fire doors that meet the net width requirements and have a straight evacuation direction in the narrow space of the mechanical communication channel.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0007] The present invention provides a method for setting a fire door in a narrow space of a mechanical communication channel, wherein a steel pipe ring is set at the position where the fire door is installed in the communication channel, and the method comprises the following steps:

[0008] Step S1, manufacturing a steel pipe segment, wherein a cavity is provided in the steel pipe segment;

[0009] Step S2, the steel pipe segments are assembled into steel pipe segment rings at fixed points to ensure that the four corners of the fire door opening are located in the compartment of the steel pipe segment;

[0010] Step S3, after the steel pipe ring at the fire door is installed, a fire door buttress is set around the fire door opening; the fire door buttress adopts a reinforced concrete structure, the steel frame of the fire door buttress is tied, the contact position between the steel frame and the steel pipe ring is fixed by welding, and an embedded steel plate is set around the fire door opening, and the embedded steel plate and the steel frame are reliably welded and fixed;

[0011] Step S4, after the steel skeleton is tied, the embedded steel plates are welded and fixed, and all kinds of embedded pipes are fixed, the fire door stack is cast, and the steel pipe cavity is filled with concrete to be dense, and the fire door is installed.

[0012] Preferably, each steel pipe segment is welded together by a back plate, a ring plate, an end plate, a longitudinal reinforcement plate, a longitudinal rib plate, annular reinforcement plate and annular rib plate. The internal space of the steel pipe segment shell formed by the welding of the back plate, the ring plate and the end plate is formed into a partition cavity by the staggered longitudinal rib plates and annular rib plates. The annular reinforcement plate reinforces the annular rib plate, and the longitudinal reinforcement plate reinforces the longitudinal rib plate.

[0013] As a preferred option, based on the width and height requirements for the fire door opening, determine the theoretical assembly points of the steel pipe segments, adjust the positions of the local longitudinal reinforcement plates and longitudinal ribs, ensure that the four corners of the fire door opening are located in the cavity of the steel pipe segment, and use the cavity space to meet the fire door opening requirements; based on the thickness requirements for the fire door stack, determine the cavity width to form a steel pipe segment structure that meets the fire door requirements.

[0014] Preferably, in step S3, the contact positions between the steel skeleton and the back plate, longitudinal reinforcement plate, longitudinal rib plate, annular reinforcement plate and annular rib plate of the steel pipe segment ring are fixed by welding.

[0015] Preferably, the steel pipe segment ring is in the form of five blocks, including a capping block, two adjacent blocks and two standard blocks. The steel pipe segments are connected by straight bolts to form a steel pipe segment ring, and the steel pipe segment ring is connected to the adjacent reinforced concrete segment ring by bent bolts.

[0016] Preferably, reinforced concrete segment rings are used at locations other than the locations where fire doors are installed in the communication channel, and the steel segment rings are connected to adjacent reinforced concrete segment rings by bent bolts.

[0017] Preferably, the fire door is a Class A fire door with two doors arranged in parallel and opening in opposite directions, and the net width of the fire door is not less than 900mm.

[0018] Preferably, the back plate, ring plate and end plate of the steel pipe segment are anti-corrosive on the soil side using hot-pressed composite steel plates, and the composite steel plates use 316L stainless steel layers with a thickness of not less than 2 mm.

[0019] Preferably, a plurality of grouting holes are provided on the back plate of the steel pipe segment to meet the grouting needs under different formation conditions and risk control requirements; each steel pipe segment of the steel pipe segment ring 1 is provided with a lifting hole.

[0020] The present invention has the following beneficial effects:

[0021] The present invention provides a method for setting a fire door in a narrow space of a mechanical communication channel. A steel pipe sheet structure is adopted at the place where the fire door is set in the mechanical communication channel. The steel pipe sheet cavity space is used to meet the installation space requirement of the fire door, so as to realize the setting of two parallel fire doors that meet the net width requirement in the narrow space of the communication channel, and the evacuation direction can be linear evacuation. This method is relatively simple and has strong practicality and versatility.

[0022] By installing steel pipe segments at the fire doors, the steel pipe segment compartment space is utilized to meet the installation space requirements of the fire doors, so as to achieve the purpose of installing fire doors that meet the regulatory requirements in the narrow space of the mechanical communication channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the embodiments of the present invention.

[0024] Figure 1 It is a schematic plan view of the arrangement of fire door openings in the communication passage in an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the end face of a steel pipe segment at a fire door of a communication passage in an embodiment of the present invention;

[0026] Figure 3 This is a block elevation diagram of an example of a steel pipe segment at a fire door of a communication passage in an embodiment of the present invention;

[0027] Figure 4 This is a schematic plan view of the steel pipe segments at the fire door of the communication channel according to an embodiment of the present invention;

[0028] Figure 5 This is an example of a block AA section of a steel pipe segment at a fire door of a communication passage in an embodiment of the present invention;

[0029] Figure 6 This is an example of a block BB section of a steel pipe segment at a fire door of a communication passage in an embodiment of the present invention;

[0030] Figure 7 This is an example of a block CC section of a steel pipe segment at a fire door of a communication passage in an embodiment of the present invention;

[0031] Figure 8 It is a schematic diagram of the anti-corrosion method of hot-pressed composite steel plate for steel pipe segments at the fire door of the communication channel in the embodiment of the present invention;

[0032] Fig. 9 This is a schematic diagram of the reinforcement cross-section of the fire door stack of the communication channel in an embodiment of the present invention.

[0033] Description of reference numerals:

[0034] 1. Steel pipe segment ring; 2. Reinforced concrete pipe segment ring; 3. Fire door butt; 4. Fire door opening; 5. Capping block; 6. Adjacent block; 7. Standard block; 8. Back plate; 9. Ring plate; 10. End plate; 11. Longitudinal reinforcement plate; 12. Longitudinal rib plate; 13. Annular reinforcement plate; 14. Ring rib plate; 15. Grouting hole; 16. Lifting hole; 17. Steel skeleton; 18. Embedded steel plate. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] Since the tunnel diameter of the mechanical communication channel is restricted by the size of the main tunnel opening in the section, it cannot be made larger. The width specifications for fire doors have a minimum evacuation width requirement. Therefore, it is a difficult problem for this type of project to install fire doors that meet the requirements of the specifications in the narrow space of the communication channel.

[0037] This embodiment provides a method for setting a fire door in a narrow space of a communication channel using a mechanical method, wherein a steel pipe segment ring 1 is set at the position where the fire door is installed in the communication channel, and reinforced concrete pipe segment rings 2 are used at other positions of the communication channel except the position where the fire door is installed; the method comprises the following steps:

[0038] Step S1, manufacturing a steel pipe segment, wherein a cavity is provided in the steel pipe segment.

[0039] Each steel pipe segment is welded by a back plate 8, annular plate 9, end plate 10, longitudinal reinforcing plate 11, longitudinal rib plate 12, annular reinforcing plate 13 and annular rib plate 14. The internal space of the steel pipe segment shell formed by the welding of the back plate 8, annular plate 9 and end plate 10 is formed into a partition cavity by the staggered longitudinal rib plates 12 and annular rib plates 14. The annular reinforcing plate 13 reinforces the annular rib plates 14, and the longitudinal reinforcing plate 11 reinforces the longitudinal rib plates 12.

[0040] In combination with the width and height requirements for the fire door opening 4, the theoretical assembly points of the steel pipe segments are determined, and the positions of the local longitudinal reinforcement plates 11 and the longitudinal ribs 12 are adjusted to ensure that the four corners of the fire door opening 4 are located in the cavity of the steel pipe segment, and the cavity space is used to meet the requirements for the setting of the fire door opening 4; in combination with the thickness requirements for the fire door stack 3, the cavity width is reasonably determined to form a steel pipe segment structure that meets the requirements for the setting of the fire door.

[0041] Step S2, the construction site follows the requirements and uses fixed points to assemble the steel pipe segment ring 1 to ensure that the four corners of the fire door opening 4 are located in the steel pipe segment compartment; the size of the fire door opening 4 meets the requirements of the specification.

[0042] Step S3, after the installation of the steel pipe segment ring 1 at the fire door is completed, if the conditions are met on site, a fire door stack 3 is set around the fire door opening 4; the fire door stack 3 adopts a reinforced concrete structure, and the steel frame 17 of the fire door stack 3 is tied. The contact position of the steel frame 17 and the back plate 8, longitudinal reinforcement plate 11, longitudinal rib plate 12, annular reinforcement plate 13, and annular rib plate 14 of the steel pipe segment ring 1 is fixed by welding, and an embedded steel plate 18 is set around the fire door opening 4, and the embedded steel plate 18 and the steel frame 17 are reliably welded and fixed.

[0043] Step S4, after the steel frame binding 17, the embedded steel plate 18 welding and fixing are completed, and the various embedded pipes are fixed, the fire door stack 3 is cast, and the steel pipe sheet cavity is filled with concrete, and the fire door is installed when the conditions are met.

[0044] Furthermore, the steel pipe segment ring 1 adopts a five-block form, and the steel pipe segment ring 1 includes a capping block 5, two adjacent blocks 6 and two standard blocks 7. The block steel pipe segments are connected by straight bolts to form the steel pipe segment ring 1, and the steel pipe segment ring 1 is connected to the adjacent reinforced concrete segment ring 2 by bent bolts.

[0045] Furthermore, the steel pipe segments are restricted by the size of the main tunnel opening. The inner diameter of the steel pipe segments is not less than 2850mm. Combined with the size requirements of the fire door opening 4, the steel pipe segments are assembled at fixed points.

[0046] Furthermore, the fire door adopts a Class A fire door with two doors in parallel and opening in opposite directions, and the net width of the fire door is not less than 900mm.

[0047] Furthermore, the back plate 8, the ring plate 9 and the end plate 10 of the steel pipe segment are anti-corrosive on the soil side using hot-pressed composite steel plates, and the composite steel plates use 316L stainless steel layers with a thickness of not less than 2 mm.

[0048] Furthermore, a plurality of grouting holes 15 are provided on the back plate 8 of the steel pipe segment to meet the grouting requirements under different formation conditions and risk control requirements; each steel pipe segment of the steel pipe segment ring 1 is provided with a hoisting hole to meet the hoisting requirements of the steel pipe segment.

[0049] It can be seen from the above technical scheme that the method for setting up fire doors in the narrow space of the mechanical communication channel provided in this embodiment adopts a steel pipe sheet structure at the place where the fire door is set in the mechanical communication channel, and utilizes the steel pipe sheet cavity space to meet the installation space requirements of the fire door, so as to realize the setting of two parallel fire doors that meet the net width requirements in the narrow space of the communication channel, and the evacuation direction can be achieved in a linear evacuation. This method is relatively simple and has strong practicality and versatility.

[0050] The above embodiments of the present invention are described in detail through examples, but the contents described are only exemplary embodiments of the embodiments of the present invention and cannot be considered to limit the scope of implementation of the embodiments of the present invention. The protection scope of the embodiments of the present invention is defined by the claims. Anyone who utilizes the technical solutions described in the embodiments of the present invention, or who, inspired by the technical solutions of the embodiments of the present invention, designs similar technical solutions within the essence and protection scope of the embodiments of the present invention to achieve the above technical effects, or who makes equal changes and improvements to the scope of application, shall still fall within the scope of protection covered by the patent of the embodiments of the present invention.

Claims

1. A method for setting fire doors in a narrow space of a mechanical communication channel, characterized in that: A steel pipe segment ring (1) is arranged at the position where the fire door is installed in the communication channel, and the method comprises the following steps: Step S1, manufacturing a steel pipe segment, wherein a cavity is provided in the steel pipe segment; Step S2, assembling the steel pipe segment ring (1) at fixed points to ensure that the four corners of the fire door opening (4) are located in the compartment of the steel pipe segment; Step S3, after the steel pipe segment ring (1) at the fire door is installed, a fire door pier (3) is arranged around the fire door opening (4); the fire door pier (3) adopts a reinforced concrete structure, a steel frame (17) of the fire door pier (3) is tied, the contact position between the steel frame (17) and the steel pipe segment ring (1) is fixed by welding, and a pre-buried steel plate (18) is arranged around the fire door opening (4), and the pre-buried steel plate (18) and the steel frame (17) are reliably welded and fixed; Step S4, after the steel skeleton (17) is tied, the embedded steel plate (18) is welded and fixed, and the various embedded pipes are fixed, the fire door stack (3) is cast, and the steel pipe cavity is filled with concrete to be dense, and the fire door is installed; Each steel pipe segment is welded together by a back plate (8), an annular plate (9), an end plate (10), a longitudinal reinforcing plate (11), a longitudinal rib plate (12), an annular reinforcing plate (13), and an annular rib plate (14); the inner space of the steel pipe segment shell formed by welding the back plate (8), the annular plate (9), and the end plate (10) forms a partition through the staggered longitudinal rib plates (12) and the annular rib plates (14); the annular reinforcing plate (13) has a reinforcing effect on the annular rib plates (14); and the longitudinal reinforcing plate (11) has a reinforcing effect on the longitudinal rib plates (12); In combination with the width and height requirements of the fire door opening (4), the theoretical assembly points of the steel pipe segments are determined, and the positions of the local longitudinal reinforcing plates (11) and the longitudinal rib plates (12) are adjusted to ensure that the four corners of the fire door opening (4) are located in the compartment of the steel pipe segment, and the compartment space is utilized to meet the requirements for setting the fire door opening (4); in combination with the thickness requirements of the fire door stack (3), the compartment width is determined to form a steel pipe segment structure that meets the requirements for setting the fire door; The steel pipe segment ring (1) is in the form of five blocks. The steel pipe segment ring (1) comprises a capping block (5), two adjacent blocks (6) and two standard blocks (7). The steel pipe segments of each block are connected by straight bolts to form the steel pipe segment ring (1).

2. The method for installing a fire door in a narrow space of a mechanical communication passage according to claim 1 is characterized in that: In step S3, the steel reinforcement skeleton (17) is fixed by welding at the contact positions with the back plate (8), the longitudinal reinforcement plate (11), the longitudinal rib plate (12), the annular reinforcement plate (13), and the annular rib plate (14) of the steel pipe segment ring (1).

3. The method for installing a fire door in a narrow space of a mechanical communication passage according to claim 1 is characterized in that: Except for the position where the fire door is installed, the other positions of the communication channel are equipped with reinforced concrete segment rings (2), and the steel segment rings (1) are connected to adjacent reinforced concrete segment rings (2) by bent bolts.

4. The method for installing a fire door in a narrow space of a mechanical communication passage according to claim 1 is characterized in that: The fire door is a Class A fire door with two doors in parallel and opening in opposite directions, and the net width of the fire door is not less than 900mm.

5. The method for installing a fire door in a narrow space of a mechanical communication passage according to claim 1 is characterized in that: The back plate (8), the ring plate (9) and the end plate (10) of the steel pipe segment are anti-corrosive using hot-pressed composite steel plates on the soil-facing side. The composite steel plates use a 316L stainless steel layer with a thickness of not less than 2 mm.

6. The method for installing fire doors in narrow spaces of mechanical communication passages according to claim 1 is characterized in that: A plurality of grouting holes (15) are arranged on the back plate (8) of the steel pipe segment to meet the grouting requirements under different stratum conditions and risk control requirements; and each steel pipe segment of the steel pipe segment ring (1) is provided with a hoisting hole.

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