CN117947976A - Method for improving fireproof performance of existing building - Google Patents
Method for improving fireproof performance of existing building Download PDFInfo
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- CN117947976A CN117947976A CN202311555548.8A CN202311555548A CN117947976A CN 117947976 A CN117947976 A CN 117947976A CN 202311555548 A CN202311555548 A CN 202311555548A CN 117947976 A CN117947976 A CN 117947976A
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- existing building
- rock wool
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 86
- 239000010959 steel Substances 0.000 claims abstract description 86
- 239000011490 mineral wool Substances 0.000 claims abstract description 45
- 238000007789 sealing Methods 0.000 claims abstract description 44
- 238000005553 drilling Methods 0.000 claims abstract description 17
- 239000000565 sealant Substances 0.000 claims description 11
- 239000003292 glue Substances 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 239000002023 wood Substances 0.000 abstract description 6
- 230000007480 spreading Effects 0.000 abstract description 5
- 230000008859 change Effects 0.000 abstract description 4
- 238000010276 construction Methods 0.000 description 6
- 230000002265 prevention Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000009970 fire resistant effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000007688 edging Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000877 morphologic effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0266—Enlarging
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/94—Protection against other undesired influences or dangers against fire
- E04B1/941—Building elements specially adapted therefor
- E04B1/942—Building elements specially adapted therefor slab-shaped
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/94—Protection against other undesired influences or dangers against fire
- E04B1/945—Load-supporting structures specially adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/94—Protection against other undesired influences or dangers against fire
- E04B1/948—Fire-proof sealings or joints
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0266—Enlarging
- E04G23/027—Loft conversion by truss modification
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/24—Structural elements or technologies for improving thermal insulation
- Y02A30/244—Structural elements or technologies for improving thermal insulation using natural or recycled building materials, e.g. straw, wool, clay or used tires
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Building Environments (AREA)
Abstract
The invention discloses a method for improving the fireproof performance of the existing building, which is to install a fireproof ceiling structure on the upper part of the wall of the existing building: mounting a supporting piece on the upper part of the long wall body; placing and fixing two short sides of the fireproof plate on the supporting piece; a lower locating piece is arranged on the short wall body, and two fireproof plates positioned on two sides are respectively and fixedly arranged on the lower locating angle steel by self-drilling screws; filling first fireproof rock wool in a gap between the fireproof plate and the long wall body, and filling second fireproof rock wool in a gap between the fireproof unit and the short wall body; and (5) connecting the fireproof plate and the wall body in a sealing way. The invention installs the fireproof unit on the upper part of the wall, which can well prevent the fire from spreading, greatly improve the overall fire-fighting performance of the existing building, and simultaneously, the invention does not need to disassemble, change and replace the original components of the building, ensures the historical reality and the appearance integrity of the existing building, and is especially suitable for the existing building with slope on the roof and the wood bearing component, especially for the building with longer period.
Description
Technical Field
The invention relates to the technical field of fire prevention of existing buildings, in particular to a method for improving the fire resistance of the existing buildings.
Background
In China, a large number of existing buildings with earlier construction ages exist, most of roofs of the existing buildings are of slope roof structures, most of bearing members on the roofs are wood, and the existing buildings have larger fire hazards and are weak links of fire fighting performance of the whole building. Thus, how to economically and practically reduce the fire safety hazards of existing buildings while preserving the historical realism and the morphological integrity of such existing buildings is a significant problem that must be addressed.
Disclosure of Invention
In view of this, the present invention proposes a method for improving the fire resistance of an existing building, particularly for an existing building having wood as the roof load bearing member.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the invention relates to a method for improving the fireproof performance of an existing building, which is to install a fireproof ceiling structure on the upper part of a wall body of the existing building and specifically comprises the following steps:
the method comprises the following steps that firstly, a supporting piece is horizontally installed on the upper part of a long wall body of an existing building, the supporting piece is fixedly connected with the long wall body through a plurality of wall penetrating screws, and supporting angle steel on the two long wall bodies is symmetrically installed, so that a fireproof plate is installed conveniently;
Secondly, placing two short sides of the fireproof plate on supporting pieces of two long walls, and respectively fixing the two short sides of the fireproof plate on corresponding supporting pieces;
Thirdly, repeating the second step, sequentially installing the fireproof plates on the two supporting pieces, and mutually clamping the fireproof plates to form an integral fireproof unit until the roof above is completely shielded;
The periphery of the fireproof unit is respectively and intermittently arranged with a long wall body and a short wall body of the existing building;
Fourthly, horizontally installing lower locating pieces on the short wall bodies of the existing building, wherein the installation heights of the lower locating pieces on the short wall bodies on the two sides are consistent, and the vertical limbs of the lower locating pieces are fixed on the short wall bodies; two fireproof plates positioned on two sides are respectively and fixedly arranged on the lower positioning angle steel by self-drilling screws;
Fifthly, filling first fireproof rock wool in a gap between the fireproof unit and the long wall body, and filling second fireproof rock wool in a gap between the fireproof unit and the short wall body; a first upper locating piece is arranged on a long wall body positioned on the upper surface of the fireproof unit, a second upper locating piece is arranged on a short wall body positioned on the upper surface of the fireproof unit, and the first locating piece and the second upper locating piece are respectively fixedly connected with the fireproof unit;
and sixthly, installing a fireproof sealing unit between the fireproof unit and the existing building, and installing a lower fireproof sealing unit between the fireproof unit and the existing building.
In the invention, the supporting piece is arranged on the long wall body to provide a supporting foundation for the fireproof plate; the upper positioning piece and the lower positioning piece further ensure reliable installation of the edge of the fireproof plate; fireproof rock wool is arranged between the fireproof unit and the wall body, and the upper side and the lower side of the fireproof unit are connected with the wall body through fireproof sealing units, so that the sealing performance and the fireproof performance of the joint are effectively guaranteed. The invention installs the fireproof unit on the upper part of the wall, which can well prevent the fire from spreading, greatly improve the overall fire-fighting performance of the existing building, and simultaneously, the invention does not need to disassemble, change and replace the original components of the building, ensures the historical reality and the appearance integrity of the existing building, and is especially suitable for the existing building with slope on the roof and the wood bearing component, especially for the building with longer period.
Preferably, in the sixth step, a fire-proof sealing unit is installed between the fire-proof unit and the existing building, and specifically includes: constructing fireproof rock wool around the upper surface of the fireproof unit, covering an upper edge-folding steel plate above the upper fireproof rock wool, wherein one end part of the upper edge-folding steel plate is in sealing connection with a long wall body or a short wall body, and sealing glue is filled between the edge of the upper edge-folding steel plate and the long wall body or the short wall body; the other end of the upper edge-folding steel plate is fixed on the upper surface of the fireproof unit, and sealant is filled between the edge of the upper edge-folding steel plate and the fireproof unit.
More preferably, the section of the upper fireproof rock wool is of an L-shaped structure, and the upper edge-folding steel plate is correspondingly provided with a covering part matched with the upper fireproof rock wool, so that the fireproof rock wool can be covered in all directions.
Preferably, in the sixth step, a lower fire-proof sealing unit is installed between the fire-proof unit and the existing building, and specifically includes: the periphery of the lower surface of the fireproof unit is provided with fireproof rock wool, a lower edge-folding steel plate is covered below the lower fireproof rock wool, one end part of the lower edge-folding steel plate is in sealing connection with a long wall body or a short wall body, and sealant is filled between the edge of the lower edge-folding steel plate and the long wall body or the short wall body; the other end of the lower edge-folding steel plate is fixed on the lower surface of the fireproof unit, and sealant is filled between the edge of the lower edge-folding steel plate and the fireproof unit.
In the invention, the fireproof plate is a metal rock wool sandwich plate, the thickness is more than or equal to 150mm, the width is more than or equal to 1000mm, and the span is less than or equal to 6000mm. The metal rock wool sandwich boards can be mutually buckled and connected.
In the invention, the first upper locating piece, the second upper locating piece, the supporting piece and the lower locating piece are all angle steel. During actual construction, the construction is convenient by directly intercepting the concrete according to the requirement.
Compared with the prior art, the invention has the advantages that the fireproof unit is arranged at the upper part of the wall body, the fire spreading can be well prevented, the overall fire-fighting performance of the existing building is greatly improved, meanwhile, the original components of the building do not need to be disassembled, changed and replaced, the historical reality and the appearance integrity of the existing building are ensured, and the invention is particularly suitable for the existing building with a slope on the roof and the bearing component is wood, and especially for the building with longer time.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is an enlarged schematic view in the direction A-A of fig. 1.
Fig. 3 is an enlarged view of a portion C in fig. 2.
Fig. 4 is an enlarged schematic view in the B-B direction of fig. 1.
Fig. 5 is an enlarged schematic view of the portion D in fig. 4.
Detailed Description
The following describes embodiments of the present invention in detail with reference to the accompanying drawings, and the embodiments and specific operation procedures are given by the embodiments of the present invention under the premise of the technical solution of the present invention, but the scope of protection of the present invention is not limited to the following embodiments.
It should be noted that in the description of the present invention, relational terms such as "first" and "second", and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
In the description of the present invention, the terms "coupled," "connected," and "connected," as may be used broadly, and may be connected, for example, fixedly, detachably, or integrally, unless otherwise specifically defined and limited; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art in specific cases. The existing building referred to in the present invention means an existing building in which the roof is in the form of a pitched roof and the load bearing members of the roof are wood.
The invention provides a method for improving the fireproof performance of an existing building, which is to install a fireproof ceiling structure in the indoor upper space of the existing building, separate the roofs by the fireproof ceiling structure, effectively prevent the fire roofs and greatly improve the overall fire performance of the existing building.
As can be seen in connection with fig. 1-5, the fire-resistant ceiling construction of the present invention comprises a support unit, a fire-resistant unit, a positioning unit and a sealing assembly; the supporting unit comprises supporting pieces (namely supporting angle steels 2) arranged on a pair of long walls 1.1 (walls to be built) of the existing building, the supporting angle steels 2 on the two long walls 1.1 are symmetrically arranged, and the supporting angle steels 2 are fixedly connected with the long walls 1.1 through a plurality of wall penetrating screws 6; the fireproof unit is formed by splicing a plurality of fireproof plates 3 with the same size, two short sides of each fireproof plate 3 are respectively lapped on the supporting angle steel 2 of the two-sided long wall body 1.1, and the fireproof plates 3 are fixedly connected with the supporting angle steel 2 through self-drilling screws;
The positioning unit is provided with a first upper positioning piece (namely a first upper positioning angle steel 3.1) arranged on a pair of long walls 1.1 of the existing building, the first upper positioning angle steel 3.1 is positioned above the supporting angle steel 2 and is installed in the same way, and the horizontal limbs are positioned at the bottoms of the vertical limbs; the upper surface of the fireproof plate is fixedly connected with the horizontal limb of the first upper positioning angle steel 3.1 through a self-drilling screw; the sealing assembly has an upper sealing unit for sealing the upper surface of the fire protection unit to an existing building and a lower sealing unit for sealing the lower surface of the fire protection unit to the existing building.
As can be seen in conjunction with fig. 4-5, the positioning unit further includes a second upper positioning member (i.e., a second upper positioning angle 3.2) and a lower positioning member (i.e., a lower positioning angle 3.3) disposed on a pair of short walls of the existing building, the height of the second upper positioning angle 3.2 is consistent with that of the first upper positioning angle 3.1, and the installation height of the lower positioning angle 3.3 is consistent with that of the first lower positioning angle 3.3. The fire prevention unit is arranged at the periphery of the long wall body 1.1 and the short wall body in a clearance mode, a first chamber surrounded by the fire prevention unit, the supporting angle steel 2, the first upper positioning angle steel 3.1 and the long wall body 1.1 is filled with first fire-proof rock wool F1, and a second chamber surrounded by the fire prevention unit, the second upper positioning angle steel 3.2, the lower positioning angle steel 3.3 and the short wall body is filled with second fire-proof rock wool F2, so that the sealing and fire resistance of a joint are guaranteed.
In order to further ensure the sealing performance and the fireproof performance between the fireproof unit and the existing building wall, the fireproof ceiling structure also comprises an upper sealing unit arranged above the fireproof unit and a lower sealing unit arranged below the fireproof unit, wherein the upper sealing unit and the lower sealing unit are positioned around the fireproof unit;
as can be seen from fig. 2 to 5, the upper sealing unit comprises an upper fireproof rock wool 4.1 attached to the top edge of the fireproof unit and an upper edging steel plate 4.2 covering the upper fireproof rock wool 4.1, wherein the upper fireproof rock wool 4.1 is located around the fireproof unit, and the cross section of the upper fireproof rock wool 4.1 is in an L-shaped structure; the upper edge-folding steel plate 4.2 completely covers the upper fireproof rock wool 4.1, one end part of the upper edge-folding steel plate 4.2 is fixedly connected with the upper surface of the fireproof unit, and sealing glue is filled between the end part of the upper edge-folding steel plate 4.2 and the fireproof unit, so that the sealing performance is ensured; the other end part of the upper edge-folding steel plate 4.2 is fixed on the long wall body 1.1 or the short wall body 1.2 through self-drilling screws, and sealing glue is filled between the end part of one end part of the upper edge-folding steel plate 4.2 and the long wall body 1.1, so that the sealing performance is ensured.
As can be seen from fig. 2 to 5, the lower sealing unit comprises a lower fireproof rock wool 5.1 attached to the bottom edge of the fireproof unit and a lower edge-folding steel plate 5.2 covering the lower fireproof rock wool 5.1, wherein the upper fireproof rock wool 4.1 is positioned around the ground edge of the fireproof unit, the lower edge-folding steel plate 5.2 completely covers the lower fireproof rock wool 5.1, one end part of the lower sealing unit is fixed on the lower surface of the fireproof unit through self-drilling screws, and sealing glue is filled between the end part of the lower edge-folding steel plate 5.2 and the fireproof unit; the other end part of the lower edge-folding steel plate 5.2 is fixed on the long wall body 1.1 or the short wall body 1.2 through self-drilling screws, and the gaps between the end part of the lower edge-folding steel plate 5.2 and the wall body are filled with sealant, so that the sealing performance of the lower surface of the fireproof unit is ensured. The invention adopts the double-layer sealing of the upper sealing unit and the lower sealing unit, thereby effectively ensuring the sealing performance and the fireproof performance between the fireproof unit and the wall body.
The invention separates the upper space of the roof by using the fireproof ceiling structure, can well prevent fire from spreading upwards indoors when the roof has fire, greatly improves the overall fire fighting performance of the existing building, simultaneously does not need to change or replace the original components of the building, and ensures the historical authenticity and the appearance integrity of the existing building.
In actual construction, the fireproof plate 3 is a commercially available metal rock wool sandwich plate, the thickness of the fireproof plate is more than or equal to 150mm, the width of the fireproof plate is more than or equal to 1000mm, the span of the fireproof plate is less than or equal to 6000mm, and the metal rock wool sandwich plates are in seamless clamping connection; the specification of the supporting angle steel is not suitable to be less than 125 multiplied by 8, and the specification of the positioning angle steel is not suitable to be less than 100 multiplied by 80 multiplied by 6;
The first fireproof rock wool F1, the second fireproof rock wool F2, the upper fireproof rock wool 4.1 and the lower fireproof rock wool 5.1 all adopt fireproof rock wool with a fireproof grade of A.
The method for improving the fireproof performance of the existing building comprises the following steps:
Firstly, mounting supporting angle steel 2 on the upper part of a long wall body 1.1 of an existing building (the horizontal limb of the supporting angle steel 2 is positioned on the lower part of the vertical limb of the supporting angle steel), wherein the supporting angle steel 2 is fixedly connected with the long wall body 1.1 through a plurality of wall penetrating screws 6, and the supporting angle steel 2 on the two long wall bodies 1.1 are symmetrically mounted so as to facilitate the installation of a fireproof plate 3;
Secondly, respectively placing two short sides of the fireproof plate 3 on the supporting angle steels 2 of the two long walls 1.1, and respectively fixing the two short sides of the fireproof plate 3 on the corresponding supporting angle steels 2 by using self-drilling screws;
Thirdly, sequentially installing the fireproof plates 3 on the supporting angle steel 2 in sequence until the roof is fully covered with the fireproof plates 3, wherein the fireproof plates 3 are mutually clamped, and the fireproof plates 3 are sequentially connected to form a whole (namely a fireproof unit);
the periphery of the fireproof unit is arranged with the long wall body 1.1 and the short wall body in a clearance way to ensure the sealing performance;
Fourthly, installing lower positioning angle steel 3.3 on the short wall body of the existing building, symmetrically installing the lower positioning angle steel 3.3 on the short wall body on two sides, and fixing vertical limbs of the lower positioning angle steel 3.3 on the short wall body through self-drilling screws; two fireproof plates 3 positioned on two sides are respectively and fixedly arranged on the lower positioning angle steel 3.3 by self-drilling screws;
Of course, in actual construction, the lower positioning angle steel 3.3 can be simultaneously installed when the supporting angle steel 2 is installed, and the fireproof plates 3 on two sides can be directly fixed on the corresponding lower positioning angle steel 3.3 when the fireproof plates 3 are installed;
Fifthly, filling first fireproof rock wool F1 in a gap between the fireproof unit and the long wall body 1.1, and filling second fireproof rock wool F2 in a gap between the fireproof unit and the short wall body;
a sixth step of installing a first upper positioning angle steel 3.1 on the long wall body 1.1 positioned on the upper surface of the fireproof unit (the vertical limb of the first upper positioning angle steel 3.1 is positioned on the upper part of the horizontal limb of the first upper positioning angle steel), the vertical limb of the first upper positioning angle steel 3.1 is fixed on the long wall body 1.1 through a self-drilling screw, and the horizontal limb of the first upper positioning angle steel 3.1 is fixed on the upper surface of the fireproof unit through the self-drilling screw;
A second upper positioning angle steel 3.2 is arranged on the short wall body positioned on the upper surface of the fireproof unit (the vertical limb of the second upper positioning angle steel 3.2 is positioned on the upper part of the horizontal limb of the second upper positioning angle steel), the vertical limb of the second upper positioning angle steel 3.2 is fixed on the short wall body through a self-drilling screw, and the horizontal limb of the second upper positioning angle steel is fixed on the upper surface of the fireproof unit through the self-drilling screw;
Seventh, constructing upper fireproof rock wool 4.1 (with L-shaped cross section) around the upper surface of the fireproof unit, covering an upper edge-finishing steel plate 4.2 above the upper fireproof rock wool 4.1, respectively and hermetically connecting the upper edge-finishing steel plate 4.2 with a long wall body 1.1 or a short wall body, (filling sealant in a connecting joint), fixing a second connecting piece of the upper edge-finishing steel plate 4.2 on the upper surface of the fireproof unit, and filling sealant in the joint; similarly, lower fireproof rock wool 5.1 is constructed around the lower surface of the fireproof unit and covers lower edge-finishing steel plates 5.2, and the lower edge-finishing steel plates 5.2 are connected end to end in sequence; the first connecting edge of the lower edge-folding steel plate 5.2 is fixed on the lower surface of the fireproof unit through a self-drilling screw, and a connecting gap between the first connecting edge and the lower edge-folding steel plate is filled with sealant; the second connecting edge is fixed on the long wall body 1.1 or the short wall body through self-drilling screws and is filled with sealant, so that the sealing connection between the fireproof unit and the wall body is realized.
The invention separates the upper space of the roof by using the fireproof ceiling structure, effectively prevents fire from spreading, greatly improves the overall fire-fighting performance of the existing building, simultaneously does not need to change or replace the original components of the building, and ensures the historical authenticity and the appearance integrity of the existing building.
It should be emphasized that the above description is merely a preferred embodiment of the present invention, and the present invention is not limited to the above embodiment, but may be modified without inventive effort or equivalent substitution of some of the technical features described in the above embodiments by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A method for improving the fireproof performance of the existing building is characterized by comprising the following steps: the method is characterized in that a fireproof ceiling structure is arranged on the upper part of a wall body of an existing building, and specifically comprises the following steps:
the method comprises the following steps that firstly, a supporting piece is horizontally installed on the upper part of a long wall body of an existing building, the supporting piece is fixedly connected with the long wall body through a plurality of wall penetrating screws, and supporting angle steel on the two long wall bodies is symmetrically installed, so that a fireproof plate is installed conveniently;
Secondly, placing two short sides of the fireproof plate on supporting pieces of two long walls, and respectively fixing the two short sides of the fireproof plate on corresponding supporting pieces;
Thirdly, repeating the second step, sequentially installing the fireproof plates on the two supporting pieces, and mutually clamping the fireproof plates to form an integral fireproof unit until the roof above is completely shielded;
The periphery of the fireproof unit is respectively and intermittently arranged with a long wall body and a short wall body of the existing building;
Fourthly, horizontally installing lower locating pieces on the short wall bodies of the existing building, wherein the installation heights of the lower locating pieces on the short wall bodies on the two sides are consistent, and the vertical limbs of the lower locating pieces are fixed on the short wall bodies; two fireproof plates positioned on two sides are respectively and fixedly arranged on the lower positioning angle steel by self-drilling screws;
Fifthly, filling first fireproof rock wool in a gap between the fireproof unit and the long wall body, and filling second fireproof rock wool in a gap between the fireproof unit and the short wall body; a first upper locating piece is arranged on a long wall body positioned on the upper surface of the fireproof unit, a second upper locating piece is arranged on a short wall body positioned on the upper surface of the fireproof unit, and the first locating piece and the second upper locating piece are respectively fixedly connected with the fireproof unit;
and sixthly, installing a fireproof sealing unit between the fireproof unit and the existing building, and installing a lower fireproof sealing unit between the fireproof unit and the existing building.
2. The method for improving the fire resistance of an existing building according to claim 1, wherein: in the sixth step, a fireproof sealing unit is installed between the fireproof unit and the existing building, and specifically includes:
Constructing fireproof rock wool around the upper surface of the fireproof unit, covering an upper edge-folding steel plate above the upper fireproof rock wool, wherein one end part of the upper edge-folding steel plate is in sealing connection with a long wall body or a short wall body, and sealing glue is filled between the edge of the upper edge-folding steel plate and the long wall body or the short wall body; the other end of the upper edge-folding steel plate is fixed on the upper surface of the fireproof unit, and sealant is filled between the edge of the upper edge-folding steel plate and the fireproof unit.
3. The method for improving the fire resistance of an existing building according to claim 2, wherein: the section of the upper fireproof rock wool is of an L-shaped structure.
4. The method for improving the fire resistance of an existing building according to claim 1, wherein: in the sixth step, a lower fireproof sealing unit is installed between the fireproof unit and the existing building, and specifically includes:
The periphery of the lower surface of the fireproof unit is provided with fireproof rock wool, a lower edge-folding steel plate is covered above the lower fireproof rock wool, one end part of the lower edge-folding steel plate is in sealing connection with a long wall body or a short wall body, and sealant is filled between the edge of the lower edge-folding steel plate and the long wall body or the short wall body; the other end of the lower edge-folding steel plate is fixed on the lower surface of the fireproof unit, and sealant is filled between the edge of the lower edge-folding steel plate and the fireproof unit.
5. The method for improving the fire resistance of an existing building according to claim 1, wherein: the fireproof plate is a metal rock wool sandwich plate, and the thickness is more than or equal to 150mm, the width is more than or equal to 1000mm, and the span is less than or equal to 6000mm.
6. The method for improving the fire resistance of an existing building according to claim 1, wherein: the first upper locating piece, the second upper locating piece, the supporting piece and the lower locating piece are all angle steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311555548.8A CN117947976A (en) | 2023-11-21 | 2023-11-21 | Method for improving fireproof performance of existing building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311555548.8A CN117947976A (en) | 2023-11-21 | 2023-11-21 | Method for improving fireproof performance of existing building |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117947976A true CN117947976A (en) | 2024-04-30 |
Family
ID=90795464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311555548.8A Pending CN117947976A (en) | 2023-11-21 | 2023-11-21 | Method for improving fireproof performance of existing building |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117947976A (en) |
-
2023
- 2023-11-21 CN CN202311555548.8A patent/CN117947976A/en active Pending
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