Arrangement structure of fire doors in subway section connecting passages

Abstract

A structural arrangement of fireproof doors for connecting passages in subway sections includes a subway section, a connecting passage, fireproof doors for the section, and fireproof partitions. The subway section includes two sections operating as single-track lines in both directions. The connecting passage connects sections one and two. Within the connecting passage, fireproof partitions are constructed at angles of 45° to 60° opposite to the train travel direction of either section one or section two. A central partition wall, perpendicular to the direction of the section, is installed along the central axis of the connecting passage and is integrally connected to the fireproof partitions on both sides, forming V-shaped passages one and two. Passage one and passage two form an interlocking passage arrangement. Passage one connects to section one, and passage two connects to section two. Two fireproof doors, one and two, are centrally located on the central partition wall, and passage one and passage two are connected by either fireproof door one or fireproof door two. This invention reduces the dynamic pressure impact of piston wind on the fireproof doors, improving the stability and service life of the doors.

Description

Technical Field

[0001] This invention relates to the field of subway engineering technology, specifically to the arrangement structure of fireproof doors in subway section connecting passages. Background Technology

[0002] Traditionally, the two fire doors in the connecting passage between two underground subway lines are installed parallel to the passageway. Because the piston-like wind pressure generated when trains pass through the underground section is significant, the fire doors in the connecting passageway are constantly subjected to this wind pressure, making them prone to deformation, damage, or even detachment, thus losing their fireproof function and threatening train safety. To address this issue, current engineering practices commonly involve improving the wind pressure resistance of fire doors, enhancing the quality of fire door installation, and strengthening operation and maintenance management. However, these practices increase additional construction costs and complicate construction and operation management. Therefore, appropriate technical measures are urgently needed to solve this problem in actual engineering projects. Summary of the Invention

[0003] This invention provides an arrangement structure for fireproof doors in subway inter-channel connecting passages. Its purpose is to solve the technical problem of improving the stability and service life of the doors and enhancing the safety of train operation by improving the arrangement of fireproof doors in connecting passages without changing the performance of the fireproof doors themselves.

[0004] The present invention adopts the following technical solution:

[0005] A fireproof door arrangement structure for a connecting passageway in a subway section includes a subway section, a connecting passageway, a fireproof door for the section, and a fireproof partition wall. The subway section includes Section 1 and Section 2, which operate as single-track lines in both directions. The connecting passageway 3 connects Section 1 and Section 2. Its characteristic is that...

[0006] In the connecting passage 3, fireproof partitions 4 are constructed at an angle of 45° to 60° opposite to the train running direction A of section 1 or section 2. The two fireproof partitions 4 start from the diagonal wall at the two ends of the connecting passage 3, and triangular wall piers 5 are set at the opposite corner of the wall at the starting point. The wall piers and the fireproof partitions 4 form a diagonal evacuation passage 41. A central partition 6 perpendicular to the section direction is set along the central axis in the middle of the connecting passage and is integrally connected to the fireproof partitions 4 on both sides. The straight passages 61 on both sides separated by the central partition wall are connected to the diagonal evacuation passages 41 at the intersection of the two sides to form V-shaped passage 1-1 and passage 2-2. Passage 1 and passage 2 form an interlocking passage arrangement. Passage 1-1 is connected to section 1, and passage 2-2 is connected to section 2.

[0007] Two fire doors, section 1 7 and section 2 8, are centrally located on the central partition wall. The passage 1-1 and passage 2 1-2 are connected by section 1 fire door or section 2 fire door, respectively.

[0008] The arrangement structure of the fireproof door of the subway section connecting passage is described above, wherein the wall pier 5 is built on the side wall of the connecting passage, and one side wall forming a triangle is parallel to the fireproof partition wall; the other side wall is on the extension line of the section side wall.

[0009] The arrangement structure of fire doors in a subway section connecting passage is described above, wherein the inclined evacuation passage is the same width as the straight passage.

[0010] The arrangement structure of fireproof doors in a subway section connecting passage is described above, wherein passage one and passage two are passages of equal width.

[0011] The arrangement structure of the fireproof door in the subway section connecting passage is described above, wherein passage one and passage two are separated into two passages by a wall integrally connected by a fireproof partition wall, a middle partition wall and a fireproof partition wall, with one end closed and the other end connected to the section.

[0012] The arrangement structure of fire doors in a subway section connecting passage is described above, wherein the fire doors are located on the central partition wall, the two doors open in opposite directions, the door closer to this side of the section opens to the opposite side of the passage, and both are right-opening doors.

[0013] The beneficial effects of this invention are as follows:

[0014] (1) By improving the arrangement of the inter-section connecting passages in this invention, the dynamic pressure impact of inter-section piston wind on fire doors is reduced, thereby improving the stability and service life of the doors. This improves the stability of fire doors, extends their service life, and reduces subsequent engineering construction and operation costs.

[0015] (2) Since the fire doors are located deep in the passageway on the partition wall, even if they are damaged or fall off, they will not affect the operation of the train, thus improving the safety of train operation and reducing the difficulty of operation and management.

[0016] (3) This invention is highly operable and reproducible, and its core technology is simple and easy to promote. It has great reference value for similar projects.

[0017] The effectiveness of the ventilation model will now be demonstrated:

[0018] 1. Schematic diagram of a conventional model: Figure 3 This is a schematic diagram of a fire door model for a standard inter-section connecting passage. Figure 4The image shows a simulated cloud map of wind pressure at fire doors in conventional connecting passages, along with the simulation results. The average wind pressure at fire doors in conventional connecting passages is 886.9 Pa, with a minimum of 879.8 Pa and a maximum of 892.5 Pa.

[0019] 2. Partial schematic diagram and pressure cloud diagram of the fireproof door model for the communication passage of the present invention: Figure 5 : A schematic diagram of the fireproof door installation model for the communication passage of this invention. Figure 6 The present invention provides a simulated cloud map of wind pressure on the fireproof doors of the connecting passages, and the simulation results show that the average simulated wind pressure on the fireproof doors of the connecting passages is 411.2 Pa, the minimum is 350.4 Pa, and the maximum is 424.9 Pa. This represents a 35% reduction in size compared to conventional connecting passages.

[0020] In summary, through Figure 3-6 It can be seen that the present invention can significantly reduce the wind pressure value of the fire door at the section connection passage under train operation. Attached Figure Description

[0021] The specific embodiments of the technical solution of the present invention will be further described in detail below with reference to the accompanying drawings.

[0022] Figure 1 This is a schematic diagram of the elevation and cross-section of the present invention.

[0023] Figure 2 This is a horizontal planar schematic diagram of the present invention.

[0024] Figure 3 This is a schematic diagram of a fire door model for a standard inter-section connecting passage.

[0025] Figure 4 This is a simulated cloud map of wind pressure on fire doors in a conventional communication passageway.

[0026] Figure 5 : A schematic diagram of the fireproof door installation model for the communication passage of this invention.

[0027] Figure 6 This invention provides a simulated cloud map of wind pressure on fire doors in communication passages.

[0028] Figure 7 Figure 1: Simulation results of wind pressure on fireproof doors in communication passages according to the present invention. Detailed Implementation

[0029] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0030] The following embodiments are merely illustrative examples to clearly illustrate the present invention and are not intended to limit the implementation of the present invention. In actual operation, changes and modifications can be made based on the following description according to requirements, but obvious changes or modifications derived from the present invention are still within the protection scope of the present invention.

[0031] See Figure 1 , 2 The diagram illustrates the arrangement structure of a fireproof door for a subway section connecting passage according to the present invention. It includes a subway section, a connecting passage, a fireproof door for the section, and a fireproof partition wall. The subway section includes Section 1 and Section 2, both operating as single-track lines in both directions. The connecting passage 3 connects Section 1 and Section 2. Its distinguishing feature is that...

[0032] In the connecting passage 3, fireproof partitions 4 are constructed at an angle of 45° to 60° opposite to the train running direction A of section 1 or section 2. The two fireproof partitions 4 start from the diagonal wall at the two ends of the connecting passage 3, and triangular wall piers 5 are set at the opposite corner of the wall at the starting point. The wall piers and the fireproof partitions 4 form a diagonal evacuation passage 41. A central partition 6 perpendicular to the section direction is set along the central axis in the middle of the connecting passage and is integrally connected to the fireproof partitions 4 on both sides. The straight passages 61 on both sides separated by the central partition wall are connected to the diagonal evacuation passages 41 at the intersection of the two sides to form V-shaped passage 1-1 and passage 2-2. Passage 1 and passage 2 form an interlocking passage arrangement. Passage 1-1 is connected to section 1, and passage 2-2 is connected to section 2.

[0033] Two fire doors, section 1 7 and section 2 8, are centrally located on the central partition wall. The passage 1-1 and passage 2 1-2 are connected by section 1 fire door or section 2 fire door, respectively.

[0034] The arrangement structure of the fireproof door of the subway section connecting passage is described above, wherein the wall pier 5 is built on the side wall of the connecting passage, and one side wall forming a triangle is parallel to the fireproof partition wall; the other side wall is on the extension line of the section side wall.

[0035] The arrangement structure of fire doors in a subway section connecting passage is described above, wherein the inclined evacuation passage is the same width as the straight passage.

[0036] The arrangement structure of fireproof doors in a subway section connecting passage is described above, wherein passage one and passage two are passages of equal width.

[0037] The aforementioned arrangement structure of fireproof doors in a subway section connecting passageway includes passageway one and passageway two being separated into two passageways by a wall integrally connected by a fireproof partition wall, a central partition wall, and another fireproof partition wall, with one end closed and the other end connected to the subway section. The fireproof partition walls of the two passageways are connected to the wall at the corner of the closed end to seal the passageway.

[0038] The arrangement structure of fire doors in a subway section connecting passage is described above, wherein the fire doors are located on the central partition wall, the two doors open in opposite directions, the door closer to this side of the section opens to the opposite side of the passage, and both are right-opening doors.

[0039] When using the passage, to enter the second section (section 2) from section 1, first pass through the V-shaped passage 1-1, then through fire door 7 or section fire door 8 to enter passage 1-2, and then enter section 2. Conversely, when entering the first section (section 1) from section 2, first pass through the V-shaped passage 1-2, then through section fire door 8 or fire door 7 to enter passage 1-1, and then enter section 2.

[0040] The fire door arrangement of the aforementioned subway section connecting passages must meet conventional seismic and fire protection design requirements in terms of structure and finish. When there is an elevation difference between the two sections, the slope of the passageway must meet conventional specifications. The aforementioned fire door arrangement of subway section connecting passages is applicable to interconnections between underground sections of various types, including open-cut, cut-and-cover, and shield tunneling.

Claims

1. A structure for the arrangement of fire doors in a connecting passageway of a subway section, comprising a subway section, a connecting passageway, fire doors in the section, and fire-resistant partitions, wherein the subway section includes section one (1) and section two (2) operating on a single-track route; the connecting passageway (3) connects section one (1) and section two (2); characterized in that, In the connecting passage (3), fireproof partitions (4) are constructed at an angle of 45° to 60° to the opposite direction of train operation (A) of section one (1) or section two (2). The two fireproof partitions (4) start from the diagonal wall at the two ends of the connecting passage (3), and triangular wall piers (5) are set at the opposite corner of the wall at the starting point. The wall piers and the fireproof partitions (4) form a diagonal evacuation passage (41) in the same direction. The middle part of the connecting passage is along A central partition wall (6) perpendicular to the direction of the interval is set on the central axis and is integrally connected to the fireproof partition walls (4) on both sides. The straight passages (61) on both sides separated by the central partition wall are connected to the oblique evacuation passages (41) at the intersection of the two sides to form V-shaped passage one (1-1) and passage two (1-2). Passage one and passage two form an "interlocking" passage arrangement. Passage one (1-1) is connected to interval one (1) and passage two (1-2) is connected to interval two (2). Two fire doors, section one (7) and section two (8), are centrally located on the partition wall. The passage one (1-1) and passage two (1-2) are connected by the section fire door one or the section fire door two, respectively.

2. The arrangement structure of fireproof doors in subway section connecting passages as described in claim 1, characterized in that, The wall pier (5) is built on the side wall of the connecting passage, and one side wall forming a triangle is parallel to the fireproof partition; the other side wall is on the extension line of the side wall of the interval.

3. The arrangement structure of fireproof doors in subway section connecting passages as described in claim 2, characterized in that, The oblique evacuation channel is the same width as the straight channel.

4. The arrangement structure of fireproof doors in subway section connecting passages as described in claim 3, characterized in that, Channel 1 and Channel 2 are channels of equal width.

5. The arrangement structure of fireproof doors in subway section connecting passages as described in claim 4, characterized in that, The passageway 1 and passageway 2 are separated into two passageways by a wall consisting of a fireproof partition wall, a central partition wall, and a fireproof partition wall connected together, with one end closed and the other end connected to the interval.

6. The arrangement structure of fireproof doors in subway section connecting passages as described in claim 1, characterized in that, The fire doors are located on the central partition wall, and the two doors open in opposite directions. The door closer to this side of the partition opens to the opposite side of the passage, and both doors open to the right.

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