Construction method of fireproof blocking partition wall of bamboo winding comprehensive pipe gallery

Abstract

The invention discloses a construction method of a fireproof blocking partition wall of a bamboo winding comprehensive pipe gallery. The municipal comprehensive pipe gallery is an urban infrastructure formed by centrally arranging more than two urban pipelines in the same space. Firstly, the inner wall of the pipe gallery is cleaned; fireproof plaster is poured into the formwork, and a plaster wall is formed; the plaster wall and the pipe gallery are sealed in an annular full-perimeter mode through fireproof sealant; for pipelines needing to be installed recently, wall penetrating cables or pipelines are installed in the reserved wall penetrating holes; gaps between the wall-through cable and the plaster wall and between the pipeline and the plaster wall are filled with fireproof foaming blocks; the wall penetrating holes reserved for the long-term in-corridor pipelines are filled with fireproof foaming blocks before the pipelines enter the corridor; and gaps between the plaster wall and the foaming block as well as between the foaming block and the through-wall cable as well as between the foaming block and the through-wall pipeline are sealed by fireproof sealant. Subsequent pipeline expansion and addition are facilitated, and the situation that secondary punching construction is needed during pipeline addition and expansion of the pipe gallery is avoided.

Description

Technical Field

[0001] The invention belongs to the field of municipal integrated pipe gallery and fire protection technology, and specifically relates to a construction method of a fireproof blocking partition wall of a bamboo-wrapped integrated pipe gallery. Background Art

[0002] The municipal integrated pipeline corridor is a modern and intensive urban infrastructure formed by concentrating two or more urban pipelines in the same space. The pipelines entering the corridor can be flexibly adjusted according to the plan and actual needs without repeated excavation of the road surface, avoiding the "road zipper" phenomenon; the bamboo-wrapped urban integrated pipeline corridor is a new type of urban underground pipeline corridor, which is different from the rectangular section reinforced concrete pipeline corridor currently used in various countries in the world. It uses bamboo as the main raw material and thermosetting resin as adhesive. It is a new type of pipeline corridor made through a winding process. Its structural section is mostly circular. Compared with the concrete pipeline corridor in terms of material performance, the bamboo-wrapped urban integrated pipeline corridor has outstanding advantages such as light weight, easy construction and installation, long service life, fire prevention and heat preservation, leakage resistance, corrosion resistance, resistance to geological settlement, convenient transportation, renewable resources, low carbon and environmental protection.

[0003] According to the requirements of GB50838-2015 "Technical Specifications for Urban Integrated Pipeline Corridor Engineering", natural gas pipeline compartments and compartments accommodating power cables should be fire-separated every 200m using non-combustible walls with a fire resistance limit of not less than 3.0h, and doors at fire separations must be Class A fire doors.

[0004] At present, the traditional fireproof blocking and partitioning of urban underground integrated pipe corridors is to use fireproof bricks, fireproof bags, and fireproof partitions for construction, and some are constructed by fireproof mortar. Because the bamboo-wrapped integrated pipe corridor is mainly circular in cross-section, its cross-sectional size is smaller than that of the traditional integrated pipe corridor. Due to the shape of the pipe corridor section and the internal construction space, it is difficult to achieve complete sealing between the wall structure and the bamboo-wrapped pipe corridor structure when the fireproof partition wall is built with traditional fireproof bricks or fireproof partitions. In addition, the traditional fireproof partition wall structure is relatively fixed and cannot be flexibly adjusted according to the situation of the pipeline entering the corridor. The traditional fireproof bag is wrapped with glass fiber cloth, which is very easy to irritate the human body when constructed and used in a small space, causing skin allergies, redness, swelling, and itching. The use of fireproof mortar to directly cast and form, or to make bricks for construction, is more environmentally friendly and safe, but it is not convenient for subsequent pipeline expansion and addition. Summary of the invention

[0005] In view of the shortcomings of the existing bamboo-wrapped integrated pipeline corridor construction technology, the present invention provides a construction method for a fire-proof blocking partition wall of a bamboo-wrapped integrated pipeline corridor, which is directly cast with fire-proof mortar, and is provided with wall-through holes and reserved wall-through holes. The gaps are filled with fire-proof foam blocks, and there is no need for secondary drilling construction on the fire-proof blocking partition wall when new pipelines are added or expanded.

[0006] In order to achieve the above object, the technical solution of the present invention is:

[0007] A construction method for a fireproof blocking partition wall of a bamboo-wrapped integrated pipe gallery comprises the following steps:

[0008] Step 1: Clean the inner wall of the bamboo-wrapped integrated pipe gallery to ensure that the fireproof mortar can be firmly attached;

[0009] Step 2: Pour the fireproof mortar evenly in the formwork to ensure that it is poured densely to form a fireproof mortar wall; when pouring the fireproof mortar wall, reserve through-wall holes according to the conditions of the pipelines entering the corridor;

[0010] Step 3: After the fireproof plaster wall is completely cured, the gap between the fireproof plaster wall and the bamboo-wrapped integrated pipe gallery is sealed with a fireproof sealant around the entire circumference;

[0011] Step 4: For pipelines that need to be installed in the near future, install wall-penetrating cables or wall-penetrating pipes in the reserved wall-penetrating holes; after the installation is completed, the gaps between the wall-penetrating cables and wall-penetrating pipes and the fireproof plaster wall are filled with fireproof foam blocks;

[0012] Step 5: For the wall holes reserved for the pipelines entering the corridor in the future, fill them with fireproof foam blocks before the pipelines enter the corridor;

[0013] Step 6: Use fireproof sealant to seal the gaps between the fireproof plaster wall and the fireproof foam block, and between the fireproof foam block and the cables and pipes passing through the wall.

[0014] Further, the fireproof blocking partition wall constructed according to the construction method is arranged in the bamboo-wrapped integrated pipe gallery, and the bamboo-wrapped integrated pipe gallery has a circular cross-section and includes a fireproof plaster wall;

[0015] The fireproof plaster wall is penetrated by wall-penetrating cables and wall-penetrating pipes, and the gaps between the wall-penetrating cables and wall-penetrating pipes and the fireproof plaster wall are filled with fireproof foam blocks;

[0016] The fireproof plaster wall is equipped with through-holes reserved for future pipelines entering the corridor, which are filled with fireproof foam blocks.

[0017] Furthermore, the thickness of the fireproof plaster wall is 150 mm to 300 mm.

[0018] Furthermore, a fireproof door is arranged on the fireproof plaster wall.

[0019] Furthermore, the fire door is provided with an observation window.

[0020] Furthermore, the gap between the fireproof plaster wall and the inner wall of the bamboo-wrapped integrated pipe gallery is sealed with a fireproof sealant.

[0021] Furthermore, the gaps between the fireproof plaster wall and the fireproof foam block, and between the fireproof foam block and the wall-penetrating cables and wall-penetrating pipes are sealed with fireproof sealant.

[0022] Furthermore, the gap between the fireproof plaster wall and the fireproof door is sealed with fireproof sealant.

[0023] Furthermore, the fire resistance limit of the fireproof foam block is required to be more than 180 minutes.

[0024] Beneficial effects of the present invention:

[0025] 1) The fireproof mortar wall of the present invention is directly cast with fireproof mortar. The pipe gallery is provided with through-wall holes and reserved through-wall holes according to the pipeline conditions entering the gallery. The size of the through-wall holes is larger than the size of the through-wall pipelines. The gaps are filled with fireproof foam blocks. The fireproof foam blocks can be flexibly installed and removed, which is convenient for subsequent expansion and addition of pipelines, and avoids the situation in which secondary drilling construction on the fireproof blocking partition wall is required when adding and expanding pipelines in the traditional comprehensive pipe gallery;

[0026] 2) The gaps between the pipe gallery structure and the fireproof plaster wall, the wall-penetrating pipeline and the fireproof foam block, and the fireproof foam block and the fireproof plaster wall of the present invention are all sealed with fireproof sealant, so as to better play the role of fireproofing and smoke isolation;

[0027] 3) The present invention avoids the use of traditional glass fiber cloth wrapped fire barrier bags in the narrow space of the pipeline corridor, which is very easy to irritate the human body and cause skin allergies, redness, swelling, itching and other phenomena, and is more environmentally friendly and safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the fireproof blocking partition wall of the bamboo-wrapped integrated pipe gallery provided by the present invention;

[0029] Figure 2 It is a detailed structural drawing of the cable passing through the firewall;

[0030] Figure 3 It is the detailed structural drawing of the pipeline passing through the firewall;

[0031] In the attached figure: 1—bamboo-wrapped integrated pipeline corridor, 2—fireproof plaster wall, 3—fireproof foam block, 4—fireproof sealant, 5—wall-penetrating cables, 6—wall-penetrating pipes, 7—fireproof door, 8—observation window. DETAILED DESCRIPTION

[0032] The present invention provides a construction method for a fireproof blocking partition wall of a bamboo-wrapped integrated pipe gallery, comprising the following steps:

[0033] Step 1: During the construction process, first determine the thickness of the fireproof mortar wall according to the design requirements, usually between 150mm and 300mm; before implementation, first accurately measure the internal dimensions of the circular bamboo-wrapped integrated pipe gallery, clean the inner wall of the bamboo-wrapped pipe gallery, remove dust, oil and other impurities on the surface, and ensure that the fireproof mortar can be firmly attached;

[0034] Step 2: Pour the fireproof mortar evenly in the formwork, and ensure that it is poured densely by means of vibration and other methods to form a fireproof mortar wall 2; in order to avoid the damage to the inner surface structure of the bamboo-wrapped pipe gallery that may be caused by the removal of the fire wall during the secondary construction of the installation of the pipeline (road) entering the corridor, when pouring the fireproof mortar wall, reserve through-wall holes according to the conditions of the pipeline (road) entering the corridor; the size, number and shape of the through-wall holes should be determined according to the diameter, specification and number of the pipeline entering the corridor in the long term, so as to ensure that the pipeline can smoothly pass through the fireproof mortar wall;

[0035] Step 3: Considering the circular cross-section of the bamboo-wrapped pipe gallery, it is difficult for the fireproof plaster wall 2 to be completely sealed with the bamboo-wrapped integrated pipe gallery 1. After the fireproof plaster wall is completely cured, the gap between the fireproof plaster wall 2 and the bamboo-wrapped integrated pipe gallery 1 is sealed with a fireproof sealant 4 around the entire circumference;

[0036] Step 4: For pipelines that need to be installed in the near future, install the wall-penetrating cables 5 or wall-penetrating pipes 6 in the reserved wall-penetrating holes; after the installation is completed, the gaps between the wall-penetrating cables 5 and wall-penetrating pipes 6 and the fireproof plaster wall 2 are filled with fireproof foam blocks 3;

[0037] Step 5: For the through-holes reserved for the pipelines entering the corridor in the future, fill them with fireproof foam blocks 3 before the pipelines enter the corridor to ensure the integrity of the fireproof partition wall. The selection of fireproof foam blocks should ensure that they have good fire resistance and elasticity so that they can be easily installed and removed when the pipeline is expanded or added. The fire resistance limit of fireproof foam blocks 3 is required to be more than 180 minutes;

[0038] Step six: The gaps between the fireproof plaster wall 2 and the fireproof foam block 3, and between the fireproof foam block 3 and the through-wall cable 5 and the through-wall pipe 6 are sealed with fireproof sealant 4 to enhance the fireproof effect.

[0039] like Figure 1-3As shown, the fireproof blocking partition wall constructed by the present invention is arranged in a bamboo-wrapped integrated pipe gallery 1, and the bamboo-wrapped integrated pipe gallery 1 has a circular cross-section, which meets the fireproof partition, sealing and fire resistance requirements of the pipe gallery. The main body of the fireproof partition wall of the present invention is a fireproof plaster wall 2, which is directly cast by fireproof plaster. The selection of fireproof plaster must ensure that it has good fire resistance and adhesion to meet the fire protection requirements of the integrated pipe gallery. The fireproof plaster wall 2 is penetrated by a through-wall cable 5 and a through-wall pipe 6, and the gap between the through-wall cable 5 and the through-wall pipe 6 and the fireproof plaster wall 2 is filled with a fireproof foam block 3; the fireproof plaster wall 2 is provided with a through-wall hole reserved for the long-term pipeline entering the corridor, which is filled with a fireproof foam block 3.

[0040] Class A fire doors7 can be installed on fireproof partition walls as needed to meet the fire protection requirements of specific areas. The selection of fire doors should ensure that their fire resistance limit is not less than 3 hours and meet the requirements of relevant standards and specifications. The material of the fire door should be made of full steel plate or other non-combustible materials to ensure that it can maintain integrity and stability in the event of a fire.

[0041] During the installation of the fire door 7, the gap between the door frame and the fireproof plaster wall 2 is sealed with a fireproof sealant to improve the fireproof performance of the fire door. The selection of the fireproof sealant should ensure that it has good flame retardancy and expansion properties, so that it can quickly expand and fill the gap when a fire occurs, thereby effectively preventing the spread of the fire. The fire door 7 should be easy to open and close, and a glass observation window should be added when necessary for observation and monitoring. However, it should be noted that the glass should be laminated fireproof glass or wired glass that meets the requirements to ensure its fire resistance.

[0042] During the implementation process, it should be ensured that the fireproof sealant 4 is evenly applied to the gap, and it should be ensured to fit closely with the surrounding structure through compaction, etc. At the same time, the fireproof sealant should be inspected and maintained regularly to ensure that it is always in good working condition.

[0043] The use of the fireproof foam block 3 can facilitate the later maintenance, replacement or expansion of pipelines and cables. During the later construction or expansion of pipelines and cables, the fireproof foam block is taken out from the fire barrier wall, and the fireproof foam block is refilled after the construction of the pipelines and cables is completed, and all gaps are sealed with the expandable fireproof sealant 4 glue, so that the maintenance, replacement and expansion of pipelines and pipes can be completed without damaging the fireproof partition wall, thereby avoiding the phenomenon that the secondary civil construction in the bamboo wrapped pipe gallery causes damage to the pipe gallery, and also avoiding the use of traditional glass fiber cloth wrapped fire barrier bags in the narrow space of the pipe gallery. It is very easy to irritate the human body, causing skin allergies, redness, swelling, itching and other phenomena.

[0044] In the description of the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", and "fix" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] The content of the present invention is not limited to the embodiments listed, and any equivalent changes made to the technical solution of the present invention by ordinary technicians in this field after reading the description of the present invention are covered by the claims of the present invention.

Claims

1. A construction method for a fireproof blocking partition wall of a bamboo-wrapped integrated pipe gallery, characterized in that: The steps include: Step 1: Clean the inner wall of the bamboo-wrapped integrated pipe gallery (1) to ensure that the fireproof mortar can be firmly attached; Step 2: evenly pour the fireproof mortar in the formwork to ensure that it is poured densely to form a fireproof mortar wall (2); when pouring the fireproof mortar wall (2), reserve a through-wall hole according to the situation of the pipeline entering the corridor; Step 3: After the fireproof plaster wall (2) is completely cured, the gap between the fireproof plaster wall (2) and the bamboo-wrapped integrated pipe gallery (1) is sealed with a fireproof sealant (4) around the entire circumference; Step 4: For pipelines that need to be installed in the near future, install the wall-penetrating cables (5) or wall-penetrating pipes (6) in the reserved wall-penetrating holes; after the installation is completed, the gaps between the wall-penetrating cables (5) and wall-penetrating pipes (6) and the fireproof plaster wall (2) are filled with fireproof foam blocks (3); Step 5: For the wall holes reserved for the pipelines entering the corridor in the future, before the pipelines enter the corridor, fireproof foam blocks (3) are used to fill them; Step 6: The gaps between the fireproof plaster wall (2) and the fireproof foam block (3), and between the fireproof foam block (3) and the wall-penetrating cables (5) and the wall-penetrating pipes (6) are sealed with fireproof sealant (4).

2. The construction method of a fireproof blocking partition wall of a bamboo-wrapped integrated pipe gallery according to claim 1 is characterized in that: The fireproof blocking partition wall constructed according to the construction method is arranged in the bamboo-wrapped integrated pipe gallery (1), and the bamboo-wrapped integrated pipe gallery (1) has a circular cross-section and includes a fireproof plaster wall (2); The fireproof plaster wall (2) is penetrated by a wall-penetrating cable (5) and a wall-penetrating pipe (6), and the gap between the wall-penetrating cable (5) and the wall-penetrating pipe (6) and the fireproof plaster wall (2) is filled with a fireproof foam block (3); The fireproof plaster wall (2) is provided with a through-wall hole reserved for the pipelines entering the corridor in the future, and is filled with a fireproof foam block (3).

3. The construction method of a fireproof blocking partition wall of a bamboo-wrapped integrated pipe gallery according to claim 2 is characterized in that: The thickness of the fireproof plaster wall (2) is 150 mm to 300 mm.

4. The construction method of a fireproof blocking partition wall of a bamboo-wrapped integrated pipe gallery according to claim 3 is characterized by: The fireproof plaster wall (2) is provided with a fireproof door (7).

5. The construction method of a fireproof blocking partition wall of a bamboo-wrapped integrated pipe gallery according to claim 4 is characterized in that: The fireproof door (7) is provided with an observation window (8).

6. The construction method of a fireproof blocking partition wall of a bamboo-wrapped integrated pipe gallery according to claim 5 is characterized by: The gap between the fireproof plaster wall (2) and the inner wall of the bamboo-wrapped integrated pipe gallery (1) is sealed with a fireproof sealant (4).

7. The construction method of a fireproof blocking partition wall of a bamboo-wrapped integrated pipe gallery according to claim 6 is characterized by: The gaps between the fireproof plaster wall (2) and the fireproof foam block (3), and between the fireproof foam block (3) and the wall-penetrating cables (5) and the wall-penetrating pipes (6) are all sealed with fireproof sealant (4).

8. The construction method of a fireproof blocking partition wall of a bamboo-wrapped integrated pipe gallery according to claim 7 is characterized by: The gap between the fireproof plaster wall (2) and the fireproof door (7) is sealed with a fireproof sealant (4).

9. The construction method of a fireproof partition wall of a comprehensive pipe gallery according to claim 8 is characterized in that: The fire resistance limit of the fireproof foam block (3) is required to be more than 180 minutes.

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