CN210644894U - Externally-hung double-layer fireproof system of underground engineering structure - Google Patents
Externally-hung double-layer fireproof system of underground engineering structure Download PDFInfo
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- CN210644894U CN210644894U CN201920893307.7U CN201920893307U CN210644894U CN 210644894 U CN210644894 U CN 210644894U CN 201920893307 U CN201920893307 U CN 201920893307U CN 210644894 U CN210644894 U CN 210644894U
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Abstract
The utility model provides an outer hanging double-deck fire protection system of underground works structure belongs to the underground works field of preventing a disaster. The external hanging type double-layer fireproof system is divided into an external hanging fireproof layer and an internal hanging fireproof layer which are connected through an internal connecting piece I and an internal connecting piece II; an air heat-insulation partition layer is arranged between the outer-hanging fireproof layer and the building wall body, and fireproof and heat-insulation materials such as coal slag and the like can be filled in the air heat-insulation partition layer. The beneficial effects of the utility model are that fire behavior is good, the atress performance is good, be convenient for install, easy replacement, the installation is simple and convenient fast, wholly adopt no hot bridge connection technique can effectually cut off the whole heat resistance of hot bridge reinforcing can effectually reduce the damage of conflagration to city underground space building wall, make the fire prevention calamity performance show and promote, casualties and economic loss when the conflagration takes place for effectual reduction underground structure again, utilize the colliery sediment to act as the thermal-insulated stopping of fire prevention and consumed the waste material protection ecological environment in mine, reduce resource and energy resource consumption.
Description
Technical Field
The utility model discloses underground works disaster prevention field, concretely relates to outer hanging double-deck fire protection system of underground works structure.
Background
Along with the development of urban construction, a large number of urban underground space buildings are being constructed, and when the urban underground space buildings are more and more applied and bring convenience to the life of people, the fire disasters of the urban underground space buildings also frequently occur all over the world, and besides causing great damage to infrastructure, the urban underground space building fires also cause serious casualties and great property loss to the local. Due to the limited escape conditions of the urban underground space building and the special situations that firefighters are difficult to rescue when entering the urban underground space building in fire, the urban underground space building design is required to adopt more systematic safety measures.
In recent years, underground structures develop rapidly in China, a plurality of subways and underground complexes are built in succession, and the fire prevention problem of the underground structures is always difficult to overcome.
At present, the fireproof coating is generally adopted, but the thickness and the heat conductivity coefficient of the fireproof coating are limited, and the fireproof coating cannot play an effective role at all.
SUMMERY OF THE UTILITY MODEL
The utility model adopts the technical scheme as follows:
an out-hung double-deck fire protection system for an underground construction structure comprising: building wall, external fireproof layer, internal fireproof layer, first connecting piece, second connecting piece, expansion bolt, backing plate, air heat-insulating partition layer, and structural adhesive,
the external hanging type double-layer fireproof system is divided into two layers which are respectively an external hanging fireproof layer and an internal hanging fireproof layer,
the inner-hanging fireproof layer consists of five parts, namely a rib, a second fireproof board surface, a second board edge connecting groove, a second board surface inner-layer clamping tenon and a second board surface outer covering board;
the middle part of the inner-hanging fireproof layer is provided with a rib, the left side and the right side of the rib are provided with a second fireproof plate surface, a plurality of through holes are longitudinally and uniformly distributed on the second fireproof plate surface, the inner layer tenon of the second fireproof plate surface is prefabricated along the upper plate end, the outer plate surface covering plate is prefabricated along the lower plate end, and the inner layer tenon of the second fireproof plate surface and the outer plate surface covering plate form a second plate edge connecting groove in a surrounding mode; a plurality of transverse inner hanging fire-proof layers are fixed at the lower ends through inner connecting pieces;
the steel backing plate is a horizontal steel plate and is arranged in the longitudinal direction of the fireproof plate surface II; arranging a through hole corresponding to the second fireproof plate surface on the steel base plate, and fixing the base plate and the inner hanging fireproof layer on the inner wall of the building wall by an expansion bolt penetrating through the reserved through holes of the steel base plate and the fireproof plate surface;
the external fireproof layer is arranged on the outer side of the internal fireproof layer and is in contact with the building cavity; the external fireproof layer consists of a first fireproof plate surface, a first plate edge connecting groove, a first plate surface inner layer clamping tenon and a first plate surface outer covering plate; prefabricating an inner-layer clamping tenon of the board surface along the lower board end at the left and right board edges of the fireproof board surface I, prefabricating an outer covering board of the board surface along the upper board end, and enclosing the inner-layer clamping tenon of the board surface and the outer covering board of the board surface to form a board edge connecting groove I;
the second in-layer connecting piece is fixed on the rib through an expansion bolt;
the end part of the external hanging fireproof laminate is connected with the end part of the internal hanging fireproof laminate through the upper end of the internal connecting piece; the end part of the other plate of the external fireproof layer is fixed on a rib of the internal fireproof layer through a second connecting piece in the layer; the outer-hanging fireproof layers are fixed through the upper ends of the first in-layer connecting pieces and the second in-layer connecting pieces which are arranged at intervals;
an air heat insulation partition layer is arranged between the external fireproof layer and the internal fireproof layer.
Furthermore, the first in-layer connecting piece consists of an outer plug-in plate, an outer connecting groove of the outer plug-in plate, a main body of the connecting piece, an inner plug-in plate, an outer plug-in plate and an inner connecting groove;
an external hanging layer internal clamping plate and an external hanging layer internal clamping plate are prefabricated at the upper end of a main body of the connecting piece I; the external hanging layer external clamping plate is arranged on the outer side of the internal hanging layer internal clamping plate; an outer connecting groove is formed by enclosing the outer clamping plate, the inner clamping plate and the connecting piece main body;
an inner hanging layer inner clamping plate and an inner hanging layer outer clamping plate are prefabricated at the lower end part of a main body of the connecting piece I; the outer clamping plate of the inner hanging layer is arranged at the outer side of the inner clamping plate of the inner hanging layer;
an inner connecting groove is formed by the inner hanging layer inner clamping plate, the inner hanging layer outer clamping plate and the connecting piece main body in a surrounding manner; the width of the outer layer connecting groove is larger than that of the inner layer tenon of the first board surface, and the width of the inner layer connecting groove is larger than that of the inner layer tenon of the second board surface;
a layer of damping rubber pad is arranged in the outer layer connecting groove and the inner layer connecting groove;
at the upper end of the first in-layer connecting piece, an inner-layer clamping tenon of the board surface I is inserted into the inner side of the outer-layer connecting groove, an outer-hanging layer clamping board is inserted into the inner side of the board edge connecting groove, and an outer covering board of the board surface I is covered above the outer-hanging layer clamping board in a sealing manner;
at the lower extreme of in situ connecting piece one, two inlayer trip of face insert the inlayer spread groove inboard, and the cardboard is inboard at two inlayer trip of face in the interior string, and the outer cardboard card of interior string is inboard at two inboard sides of flange spread groove, and the two outer cover plate closing caps of face are in hanging in the interior cardboard top.
Furthermore, the second in-layer connecting piece consists of a second connecting piece main body, an upper clamping plate, a lower clamping plate, a connecting groove, a trapezoidal groove and a bolt hole;
an upper clamping plate is prefabricated at the upper end part of the second connecting piece main body, a lower clamping plate is prefabricated at the lower end part of the second connecting piece main body, and the upper clamping plate, the lower clamping plate and the second connecting piece main body are enclosed to form a connecting groove; a trapezoidal groove is reserved in the middle of the surface of an upper clamping plate of the connecting piece II main body, and a bolt hole is reserved vertically downwards on the reserved trapezoidal groove; the width of the connecting groove is larger than that of the inner-layer tenon of the board surface, and a layer of damping rubber pad is placed in the connecting groove;
two sides of the connecting piece II in the layer are provided; the inner layer tenon of the first board surface is inserted into the inner side of the connecting groove, the upper clamping board is inserted into the inner side of the edge connecting groove, the lower clamping board is arranged at the lower part of the inner layer tenon of the first board surface, and the outer covering board of the first board surface is covered above the upper clamping board of the outer hanging layer;
the expansion bolt penetrates through a bolt hole reserved on the second inner connecting piece to fix the outer hanging fireproof layer on a rib of the inner hanging fireproof layer, the expansion bolt is fixed in the trapezoidal groove, and structural glue is poured and poured in the trapezoidal groove;
furthermore, the external fireproof layer is a plate layer made of rock wool serving as a raw material, the rock wool plate layer fully exerts the unique performance of the rock wool core material, has excellent fireproof, heat preservation and sound absorption performances and has a low heat conductivity coefficient, so that the external fireproof layer has remarkable effects on fire prevention, heat preservation, heat insulation, sound absorption, sound insulation and the like, and the aims of high quality, high efficiency, reliability and safety are achieved.
Furthermore, the raw materials of the inner-hanging fireproof layer comprise aluminate cement, magnesium oxide, quartz sand, quartz powder, silica fume, water, a water reducing agent, basalt fibers and glass fibers.
Further, the bottom bearing plate is prepared from the following raw materials in parts by weight: 30 parts of aluminate cement, 28 parts of magnesium oxide, 23 parts of quartz sand, 7 parts of quartz powder, 6 parts of silica fume, 8 parts of water, 0.78 part of water reducing agent, 0.3 part of basalt fiber and 0.3 part of glass fiber.
Further, the air heat-preservation partition layer is filled with coal slag filler.
Further, the installation method of the externally-hung double-layer fireproof system of the underground engineering structure comprises the following steps:
1) the inner hanging fireproof layer is connected with the building wall body before, a steel base plate is arranged on the outer layer of the inner hanging fireproof layer, and the base plate and the inner hanging fireproof layer are fixed on the building wall body through an expansion bolt penetrating through a reserved through hole of the base plate and the inner hanging fireproof layer; an inner connecting piece I is arranged between the left and right inner hanging fireproof layers;
2) the outer hanging fireproof layer is connected with the inner hanging fireproof layer; one end plate end of the external fireproof layer is fixed on a rib of the internal fireproof layer through a second internal connecting piece; one end plate end of the external fireproof layer is fixed with the internal fireproof layer through a first internal connecting piece;
3) and filling coal slag filler at the longitudinal end of the air heat-insulating partition layer to form a loose and porous coal slag heat-insulating layer.
The utility model has the advantages that:
the beneficial effects of the utility model are that fire behavior is good, the atress performance is good, be convenient for install, easy replacement, the installation is simple and convenient fast, wholly adopt no hot bridge connection technique can effectually cut off the whole heat resistance of hot bridge reinforcing can effectually reduce the damage of conflagration to city underground space building wall, make the fire prevention calamity performance show and promote, casualties and economic loss when the conflagration takes place for effectual reduction underground structure again, utilize the colliery sediment to act as the thermal-insulated stopping of fire prevention and consumed the waste material protection ecological environment in mine, reduce resource and energy resource consumption.
Drawings
FIG. 1 is a schematic view of an external hanging type double-layer fireproof system of an underground engineering structure;
FIG. 2 is a schematic structural view of an external fireproof layer;
FIG. 3 is a schematic structural view of an internal fireproof layer;
FIG. 4 is a schematic view of a structure of an intra-layer connector;
FIG. 5 is a front view of the intra-layer connector;
FIG. 6 is a schematic structural diagram of a second intra-layer connector;
FIG. 7 is a second front view of the intra-level connector;
FIG. 8 is a detail view at A;
FIG. 9 is a schematic view of the connection between the second in-story connector and the building wall;
FIG. 10 is a schematic view of filling coal slag filler in an air insulation partition layer;
in the figure: 1 is a building wall; 2 is an external fireproof layer; 2-1, fireproof plate surface I; 2-2 is a plate edge connecting groove I; 2-3 is an inner layer tenon of the board surface; 2-4 is an outer covering plate;
3 is an internal hanging fireproof layer; 3-1 is a rib; 3-2 is a fireproof board surface II; 3-3 is a plate edge connecting groove II; 3-4 is a tenon at the inner layer of the second board surface; 3-5 is a plate surface external covering plate;
4 is an in-layer connecting piece I; 5 is an intra-layer connecting piece II; 6 is an expansion bolt; 7 is a backing plate; 8 is an air heat-insulating partition layer; 9, pouring structural adhesive; 10 is coal mine slag filler;
4-1 is an external hanging layer external clamping plate; 4-2 is an external hanging layer inner clamping plate; 4-3 is an outer layer connecting groove; 4-4 is a main body of the connecting piece; 4-5 is an inner hanging layer inner clamping plate; 4-6 is an outer clamping plate of the inner hanging layer; 4-7 is inner layer connecting groove;
5-1 is a connecting piece II main body; 5-2 is an upper clamping plate; 5-3 is a lower clamping plate; 5-4 is a connecting groove; 5-5 is a trapezoidal groove; 5-6 are bolt holes.
Detailed Description
For further explanation of the present invention, the following detailed description of the present invention is provided with reference to the drawings and examples, which should not be construed as limiting the scope of the present invention.
Example (b): as shown in fig. 1-10: an out-hung double-deck fire protection system for an underground construction structure comprising: building wall 1, external fireproof layer 2, internal fireproof layer 3, internal connecting piece 4, internal connecting piece 5, expansion bolt 6, backing plate 7, air heat-insulating partition layer 8, pouring structural adhesive 9,
the external hanging type double-layer fireproof system is divided into two layers, namely an external hanging fireproof layer 2 and an internal hanging fireproof layer 3,
the inner hanging fireproof layer 3 consists of five parts, namely a rib 3-1, a fireproof plate surface II 3-2, a plate edge connecting groove II 3-3, a plate surface II inner layer clamping tenon 3-4 and a plate surface outer covering plate 3-5;
the middle part of the internally hung fireproof layer 3 is provided with a rib 3-1, the left side and the right side of the rib 3-1 are provided with a second fireproof plate surface 3-2, a plurality of through holes are longitudinally and uniformly distributed on the second fireproof plate surface 3-2, the edge of the second fireproof plate surface 3-2 is prefabricated with a second inner layer clamping tenon 3-4 at the upper plate end, the second outer plate surface covering plate 3-5 is prefabricated along the lower plate end, and the second inner layer clamping tenon 3-4 and the second outer plate surface covering plate 3-5 enclose a second plate edge connecting groove 3-3; the lower ends of a plurality of transverse internal hanging fireproof layers 3 are fixed through an internal connecting piece I4;
the steel backing plate 7 is a horizontal steel plate and is arranged in the longitudinal direction of the second fireproof plate surface 3-2; arranging a through hole corresponding to the second fireproof plate surface 3-2 on the steel backing plate 7, and fixing the backing plate 7 and the inner hanging fireproof layer 3 on the inner wall of the building wall 1 by the expansion bolt 6 penetrating through the reserved through hole of the steel backing plate and the reserved through hole;
the external fireproof layer 2 is arranged on the outer side of the internal fireproof layer 3, and the external fireproof layer 2 is in contact with the building cavity; the external fireproof layer 2 consists of a first fireproof board surface 2-1, a first board edge connecting groove 2-2, a first board surface-inner layer clamping tenon 2-3 and a first board surface-outer covering board 2-4; prefabricating an inner-layer clamping tenon 2-3 of the board surface along the lower board end at the left and right board edges of the fireproof board surface I2-1, prefabricating an outer covering board 2-4 of the board surface along the upper board end, and enclosing the inner-layer clamping tenon 2-3 of the board surface and the outer covering board 2-4 to form a board edge connecting groove I2-2;
the second in-layer connecting piece 5 is fixed on the rib 3-1 through an expansion bolt 6;
the end part of the external fireproof layer 2 is connected with the end part of the internal fireproof layer 3 through the upper end of a first internal connecting piece 4; the end part of the other plate of the external fireproof layer 2 is fixed on a rib 3-1 of the internal fireproof layer 3 through a second connecting piece 5 in the layer; the outer hanging fireproof layers 2 are fixed through the upper ends of the first in-layer connecting pieces 4 and the second in-layer connecting pieces 5 which are arranged at intervals;
an air heat-insulating partition layer 8 is arranged between the external fireproof layer 2 and the internal fireproof layer 3; the air heat-preservation isolating layer 8 is filled with coal slag filler 10;
the first in-layer connecting piece 4 consists of an external hanging layer external clamping plate 4-1 and an external hanging layer internal clamping plate 4-2
The outer connecting groove 4-3, the connecting piece main body 4-4, the inner hanging layer inner clamping plate 4-5, the inner hanging layer outer clamping plate 4-6 and the inner connecting groove 4-7;
an external hanging layer external clamping plate 4-1 and an external hanging layer internal clamping plate 4-2 are prefabricated at the upper end of a main body 4-4 of the connecting piece I; the external hanging layer external clamping plate 4-1 is arranged on the outer side of the internal hanging layer internal clamping plate 4-2; an outer connecting groove 4-3 is formed by enclosing the outer snap-gauge 4-1, the inner snap-gauge 4-2 and the connecting piece main body 4-4;
the lower end part of a main body 4-4 of the connecting piece is prefabricated with an inner hanging layer inner clamping plate 4-5 and an inner hanging layer outer clamping plate 4-6; the outer clamping plate 4-6 of the inner hanging layer is arranged at the outer side of the inner hanging layer inner clamping plate 4-5;
an inner connecting groove 4-7 is formed by enclosing the inner clamping plate 4-5 and the outer clamping plate 4-6 of the inner hanging layer and the main body 4-4 of the connecting piece; the width of the outer layer connecting groove 4-3 is larger than that of the inner layer tenon 2-3 of the first board surface, and the width of the inner layer connecting groove 4-7 is larger than that of the inner layer tenon 3-4 of the second board surface;
a layer of damping rubber pad is arranged in the outer layer connecting groove 4-3 and the inner layer connecting groove 4-7;
at the upper end of the first in-layer connecting piece 4, an inner-layer clamping tenon 2-3 of the board surface is inserted into the inner side of the first plate edge connecting groove 4-3, an outer-layer clamping board 4-1 of the external hanging layer is inserted into the inner side of the first plate edge connecting groove 2-2, and an outer covering board 2-4 of the board surface is covered above the outer-layer clamping board 4-1 of the external hanging layer;
at the lower end of the first in-layer connecting piece 4, the second board surface inner layer clamping tenon 3-4 is inserted into the inner connecting groove 4-7, the inner hanging layer inner clamping board 4-5 is arranged at the inner side of the second board surface inner layer clamping tenon 3-4, the inner hanging layer outer clamping board 4-6 is clamped at the inner side of the second board surface connecting groove 3-3, and the second board surface outer covering board 3-5 is covered above the inner hanging layer inner clamping board 4-5 in a sealing manner;
the second in-layer connecting piece 5 consists of a second connecting piece main body 5-1, an upper clamping plate 5-2, a lower clamping plate 5-3, a connecting groove 5-4, a trapezoidal groove 5-5 and a bolt hole 5-6;
an upper clamping plate 5-2 is prefabricated at the upper end part of the second connecting piece main body 5-1, a lower clamping plate 5-3 is prefabricated at the lower end part of the second connecting piece main body 5-1, and the upper clamping plate 5-2, the lower clamping plate 5-3 and the second connecting piece main body 5-1 are enclosed to form a connecting groove 5-4; a trapezoidal groove 5-5 is reserved in the middle of the surface of an upper clamping plate 5-2 of a connecting piece second main body 5-1, and a bolt hole 5-6 is reserved vertically downwards on the reserved trapezoidal groove 5-5; the width of the connecting groove 5-4 is larger than that of the inner-layer tenon 2-3 of the board surface, and a layer of damping rubber pad is placed in the connecting groove 5-4;
two sides of the inner connecting piece II 5 are provided; an inner-layer tenon 2-3 of the board surface I is inserted into the inner side of the connecting groove 5-4, an upper clamping board 5-2 is inserted into the inner side of the board edge connecting groove 2-2, a lower clamping board 5-3 is arranged at the lower part of the inner-layer tenon 2-3 of the board surface I, and an outer covering board 2-4 of the board surface I is covered above the upper clamping board 5-2 of the outer hanging layer in a sealing way;
the expansion bolt 6 penetrates through a bolt hole 5-6 reserved on the inner connecting piece II 5 to fix the outer hanging fireproof layer 2 on a rib 3-1 of the inner hanging fireproof layer 3, the expansion bolt 6 is fixed in the trapezoidal groove 5-5, and structural glue 9 is poured in the trapezoidal groove 5-5;
the external fireproof layer 2 is a plate layer made of rock wool serving as a raw material, the rock wool plate layer gives full play to the unique performance of the rock wool core material, has excellent fireproof, heat preservation and sound absorption performances and lower heat conductivity coefficient, has remarkable effects on fire prevention, heat preservation, heat insulation, sound absorption, sound insulation and the like, and further achieves the aims of high quality, high efficiency, reliability and safety.
The bottom bearing plate 3 is prepared from the following raw materials in parts by weight: 30 parts of aluminate cement, 28 parts of magnesium oxide, 23 parts of quartz sand, 7 parts of quartz powder, 6 parts of silica fume, 8 parts of water, 0.78 part of water reducing agent, 0.3 part of basalt fiber and 0.3 part of glass fiber.
An installation method of an external hanging type double-layer fireproof system of an underground engineering structure comprises the following steps:
1) the inner hanging fireproof layer 3 is connected with the building wall 1 in advance, a steel backing plate 7 is arranged on the outer layer of the inner hanging fireproof layer 3, and the backing plate 7 and the inner hanging fireproof layer 3 are fixed on the building wall 1 through expansion bolts 6 penetrating through reserved through holes of the inner hanging fireproof layer 3 and the steel backing plate; an inner connecting piece I4 is arranged between the left and right inner hanging fireproof layers 3;
2) the outer hanging fireproof layer 2 is connected with the inner hanging fireproof layer 3; one end plate end of the external fireproof layer 2 is fixed on a rib 3-1 of the internal fireproof layer 3 through a second connecting piece 5 in the layer; one end plate end of the external fireproof layer 2 is fixed with the internal fireproof layer 3 through a first internal connecting piece 4;
3) and filling coal slag fillers 10 at the longitudinal end of the air heat-insulation partition layer 8 to form a loose and porous coal slag heat-insulation layer.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (5)
1. An out-hung double-deck fire protection system for an underground construction structure, comprising: building wall (1), external fire protection layer (2), interior fire protection layer (3), in situ connecting piece (4), two (5) of in situ connecting piece, expansion bolts (6), backing plate (7), air insulation partition layer (8), fill the structure and glue (9), its characterized in that:
the external hanging type double-layer fireproof system is divided into two layers which are respectively an external hanging fireproof layer (2) and an internal hanging fireproof layer (3),
the inner-hanging fireproof layer (3) consists of five parts, namely a rib (3-1), a second fireproof board surface (3-2), a second board edge connecting groove (3-3), a second board surface inner-layer clamping tenon (3-4) and a second board surface outer covering board (3-5);
the middle part of the inner-hanging fireproof layer (3) is provided with a rib (3-1), the left side and the right side of the rib (3-1) are provided with a second fireproof plate surface (3-2), a plurality of through holes are longitudinally and uniformly distributed on the second fireproof plate surface (3-2), the edge of the second fireproof plate surface (3-2) is prefabricated with a second inner-layer tenon (3-4) of the plate surface along the upper plate end, a second outer shielding plate (3-5) of the plate surface is prefabricated along the lower plate end, and the second inner-layer tenon (3-4) of the plate surface and the second outer shielding plate (3-5) of the plate surface enclose a second plate edge connecting groove; the plurality of transverse inner hanging fireproof layers (3) are fixed through the lower ends of the first inner connecting pieces (4);
the steel backing plate (7) is a horizontal steel plate and is arranged in the longitudinal direction of the second fireproof plate surface (3-2); through holes corresponding to the second fireproof plate surface (3-2) are arranged on the steel base plate (7), and the expansion bolts (6) penetrate through the through holes reserved in the steel base plate and the second fireproof plate surface to fix the base plate (7) and the inner hanging fireproof layer (3) on the inner wall of the building wall body (1);
the external fireproof layer (2) is arranged on the outer side of the internal fireproof layer (3), and the external fireproof layer (2) is in contact with the building cavity; the external fireproof layer (2) consists of a first fireproof board surface (2-1), a first board edge connecting groove (2-2), a first board surface-inner layer clamping tenon (2-3) and a first board surface-outer covering board (2-4); prefabricating an inner-layer tenon (2-3) of the board surface along the lower board end at the left and right board edges of the first fireproof board surface (2-1), prefabricating an outer covering board (2-4) of the board surface along the upper board end, wherein the inner-layer tenon (2-3) of the board surface and the outer covering board (2-4) enclose a board edge connecting groove (2-2);
the second in-layer connecting piece (5) is fixed on the rib (3-1) through an expansion bolt (6);
the end part of the external fireproof layer (2) is connected with the end part of the internal fireproof layer (3) through the upper end of a first connecting piece (4) in the layer; the end part of the other plate of the external fireproof layer (2) is fixed on a rib (3-1) of the internal fireproof layer (3) through a second connecting piece (5) in the layer; the outer hanging fireproof layers (2) are fixed through the upper ends of the first in-layer connecting pieces (4) and the second in-layer connecting pieces (5) which are arranged at intervals;
an air heat-insulating partition layer (8) is arranged between the external hanging fireproof layer (2) and the internal hanging fireproof layer (3).
2. The underground works structure hanging double-deck fire protection system of claim 1, wherein: the first in-layer connecting piece (4) consists of an external hanging layer external clamping plate (4-1) and an external hanging layer internal clamping plate (4-2)
The connecting piece comprises an outer layer connecting groove (4-3), a connecting piece main body (4-4), an inner hanging layer inner clamping plate (4-5), an inner hanging layer outer clamping plate (4-6) and an inner layer connecting groove (4-7);
an external hanging layer external clamping plate (4-1) and an external hanging layer internal clamping plate (4-2) are prefabricated at the upper end of a main body (4-4) of the connecting piece I; the external hanging layer external clamping plate (4-1) is arranged at the outer side of the internal hanging layer internal clamping plate (4-2); an outer connecting groove (4-3) is formed by enclosing the outer snap-gauge (4-1) and the inner snap-gauge (4-2) with the connecting piece main body (4-4);
an inner hanging layer inner clamping plate (4-5) and an inner hanging layer outer clamping plate (4-6) are prefabricated at the lower end part of a connecting piece first main body (4-4); the outer clamping plate (4-6) of the inner hanging layer is arranged at the outer side of the inner hanging layer inner clamping plate (4-5);
an inner connecting groove (4-7) is formed by the inner hanging layer inner clamping plate (4-5), the inner hanging layer outer clamping plate (4-6) and the connecting piece main body (4-4) in a surrounding manner; the width of the outer layer connecting groove (4-3) is larger than that of the first board surface and the inner layer tenon (2-3), and the width of the inner layer connecting groove (4-7) is larger than that of the second board surface and the inner layer tenon (3-4);
a layer of damping rubber pad is arranged in the outer layer connecting groove (4-3) and the inner layer connecting groove (4-7);
at the upper end of the first in-layer connecting piece (4), an inner-layer clamping tenon (2-3) of the board surface is inserted into the inner side of the outer-layer connecting groove (4-3), an outer-hanging layer clamping board (4-1) is inserted into the inner side of the first board-edge connecting groove (2-2), and an outer covering board (2-4) of the board surface is covered above the outer-hanging layer clamping board (4-1);
at the lower end of the first in-layer connecting piece (4), the second board surface inner layer clamping tenon (3-4) is inserted into the inner side of the inner layer connecting groove (4-7), the inner hanging layer inner clamping board (4-5) is arranged on the inner side of the second board surface inner layer clamping tenon (3-4), the inner hanging layer outer clamping board (4-6) is clamped on the inner side of the second board surface connecting groove (3-3), and the second board surface outer covering board (3-5) is covered above the inner hanging layer inner clamping board (4-5).
3. The underground works structure hanging double-deck fire protection system of claim 1, wherein: the second in-layer connecting piece (5) consists of a second connecting piece main body (5-1), an upper clamping plate (5-2), a lower clamping plate (5-3), a connecting groove (5-4), a trapezoidal groove (5-5) and a bolt hole (5-6);
an upper clamping plate (5-2) is prefabricated at the upper end part of the second connecting piece main body (5-1), a lower clamping plate (5-3) is prefabricated at the lower end part of the second connecting piece main body, and the upper clamping plate (5-2), the lower clamping plate (5-3) and the second connecting piece main body (5-1) enclose a connecting groove (5-4); a trapezoidal groove (5-5) is reserved in the middle of the surface of an upper clamping plate (5-2) of a connecting piece second main body (5-1), and a bolt hole (5-6) is reserved vertically downwards on the reserved trapezoidal groove (5-5); the width of the connecting groove (5-4) is larger than that of the inner-layer tenon (2-3) of the board surface, and a layer of damping rubber pad is placed in the connecting groove (5-4);
two sides of the inner connecting piece II (5) are provided; an inner-layer tenon (2-3) of the board surface I is inserted into the inner side of the connecting groove (5-4), an upper clamping board (5-2) is inserted into the inner side of the board edge connecting groove I (2-2), a lower clamping board (5-3) is arranged at the lower part of the inner-layer tenon (2-3) of the board surface I, and an outer covering board (2-4) of the board surface I is covered above the upper clamping board (5-2) of the outer hanging layer;
the expansion bolt (6) penetrates through a bolt hole (5-6) reserved in the inner connecting piece II (5) to fix the outer hanging fireproof layer (2) on a rib (3-1) of the inner hanging fireproof layer (3), the expansion bolt (6) is fixed in the trapezoidal groove (5-5), and structural glue (9) is poured in the trapezoidal groove (5-5).
4. The underground works structure hanging double-deck fire protection system of claim 1, wherein: the external fireproof layer (2) is a plate layer made of rock wool.
5. The underground works structure hanging double-deck fire protection system of claim 1, wherein: the air heat-insulating partition layer (8) is filled with coal mine slag filling material (10).
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|---|---|---|---|
| CN201920893307.7U CN210644894U (en) | 2019-06-14 | 2019-06-14 | Externally-hung double-layer fireproof system of underground engineering structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920893307.7U CN210644894U (en) | 2019-06-14 | 2019-06-14 | Externally-hung double-layer fireproof system of underground engineering structure |
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Granted publication date: 20200602 Termination date: 20210614 |