CN109707451A - A fireproof and explosion-proof tunnel protection door system - Google Patents

Abstract

The invention discloses a fire-proof and explosion-proof tunnel protection door system, comprising a cave side panel (1), a tunnel side panel (2) and a refractory layer (3); the cave side panel (1) is connected to the tunnel side panel (1). Steel trusses (5) arranged in a staggered horizontal and vertical direction are arranged between the panels (2). They are respectively fixed and connected to form a number of filling space units, and refractory materials are respectively filled in each filling space unit, and a refractory layer is formed between the side panel (1) of the cavern and the side panel (2) of the tunnel. (3), thereby forming a protective door system with a sandwich structure. The two-layer panel of the invention ensures the rigidity of the protective door, the refractory layer material provides good properties of heat insulation, fire resistance and explosion resistance, and the refractory material separately fills each filling space unit through each pouring hole to ensure the overall Even by force.

Description

A fireproof and explosion-proof tunnel protection door system

technical field

The invention belongs to the technical field of railway tunnel protection doors, and more particularly relates to a fireproof and explosion-proof tunnel protection door system.

Background technique

With the development of railway construction in China, especially the large-scale construction of passenger dedicated lines, the number and length of railway tunnels have increased year by year, and the problems of fire prevention and rescue design of railway tunnels have become increasingly prominent. The newly revised "Code for Fire Protection of Railway Engineering Design" requires that cross passages and protective doors for equipment caverns be set up in tunnels of a certain length. Under disaster conditions, protective doors are of great significance for protecting cavern equipment, ensuring smooth information flow, crowd evacuation and creating escape conditions.

At present, steel structures are usually painted with fire-retardant coatings on the surface to prevent the rapid spread of fires. The existing refractory coating is to coat the surface of the finished protective door with a coating material with refractory properties to meet the performance requirements of fire resistance and explosion resistance, but this method has the following shortcomings:

1. The method of applying refractory coating on the outside of the protective door is usually not very good in refractory effect, and the thickness is thick and self-heavy, the air humidity in the tunnel is high, and the adhesion force is not good under the action of the tunnel piston wind, it is easy to fall off, and the corrosion is serious ;

2. The method of applying refractory coating on the outside of the protective door cannot enhance the tensile and bending resistance of the protective door, and cannot play the role of impact resistance and strong tunnel piston wind on the protective door;

3. Except for smearing on the surface of the protective door, there is no other fire-proof and explosion-proof protective layer;

4. The surface of the protective door is rough and the decoration is poor; the design of the lifting chain is not optimized enough.

SUMMARY OF THE INVENTION

In view of the above defects or improvement needs of the prior art, the present invention provides a fire-proof and explosion-proof tunnel protection door system, which adopts a cave side panel, a refractory layer and a tunnel side panel to form a "sandwich" protection door system, wherein the two The layer panel ensures the rigidity of the protective door, and the refractory layer material provides good thermal insulation, fire resistance and anti-explosion properties.

In order to achieve the above purpose, a fire-proof and explosion-proof tunnel protection door system is provided, comprising a side panel of a cavern, a side panel of a tunnel and a fire-resistant layer; wherein,

The side panel of the cavern is arranged on the side of the cavern of the protective door, the side panel of the tunnel is arranged on the side of the tunnel of the protective door, and the side panel of the cavern and the side panel of the tunnel are arranged in a crisscross pattern. of steel trusses; and,

The horizontal and vertical steel trusses are respectively fixedly connected with the side panels of the cavern and the side panels of the tunnel to form a number of filling space units, each of which is filled with refractory materials, and the A refractory layer is formed between the side panels of the cavern and the side panels of the tunnel, thereby forming a protective door system with a sandwich structure.

Further, each of the filling space units has at least one pouring hole, the pouring hole is arranged on the side panel of the cavern, and the side panel of the tunnel is a whole panel.

Further, the refractory material is selected from glass fiber reinforced concrete, common fiber reinforced concrete or perlite material.

Further, the steel truss, the side panels of the cavern and the side panels of the tunnel are fixed by bolts or welding.

Further, the side panel of the cave, the side panel of the tunnel and the refractory layer constitute the protective door leaf, and a hoisting chain is arranged between one side of the protective door leaf and the reinforced concrete of the partition wall.

Further, the chain mounting piece at one end of the hoisting chain is fixedly connected to the side panel of the cavity and the reserved bolt holes in the refractory layer through bolts, washers and nuts, and the other end of the hoisting chain is fixedly connected. The chain mounting piece is fixedly connected to the mounting support on the reinforced concrete of the partition wall through expansion bolts and washers.

Further, the height of the lifting chain from the ground is 1/3 to 2/3 of the height of the side panel of the cavern.

Further, at least one of the hoisting chains is arranged on each of the protective door leaves, and is connected with the reinforced concrete of the partition wall.

Further, one end of the protective door leaf is provided with a loose leaf, and the other end of the loose leaf is connected to the door frame and the door cover in turn through bolts and a backing plate. Wall reinforced concrete fixed connection.

Further, fireproofing is provided in the reserved bolt holes in the hoisting chain, the side panel of the cave and the refractory layer, between the door frame and the reinforced concrete of the partition wall and in the installation holes of the bolts. Explosion-proof sealing material.

In general, compared with the prior art, the above technical solutions conceived by the present invention can achieve the following beneficial effects:

(1) The fireproof and explosion-proof tunnel protective door system of the present invention adopts the side panel of the cavern, the refractory layer and the side panel of the tunnel to form a "sandwich" protective door body system, wherein the two-layer panels ensure the rigidity of the protective door, and the refractory layer The material provides good thermal insulation, fire resistance and explosion resistance properties. A plurality of filling space units are formed between the transverse steel trusses and the longitudinal steel trusses and the two-layer panels, and pouring holes are arranged in each filling space unit respectively. The refractory material fills each filling space unit separately through each pouring hole, which effectively avoids the uneven filling caused by the overall filling, which leads to the problem of uneven stress on the entire fireproof and explosion-proof protective door.

(2) The fireproof and explosion-proof tunnel protection door system of the present invention is a cement-based composite material composed of glass fiber as a reinforcing material, which has excellent tensile, flexural, impact strength, elongation and toughness, and has glass fiber Low thermal conductivity, good chemical stability, wide temperature range, non-toxic, odorless, fireproof, sound-absorbing and other characteristics, is an ideal fireproof and anti-explosion material.

(3) In the fireproof and anti-explosive tunnel protection door system of the present invention, the chemical anchor bolt is compared with the expansion anchor bolt, and the screw is glued and fixed in the drilling hole of the concrete base material, so as to realize the anchoring of the fixing member and increase the overall strength of the protection door. .

(4) In the fire-proof and explosion-proof tunnel protection door system of the present invention, the fire-proof and explosion-proof sealing material is used as a sealing material for improving the fire-proof and explosion-proof performance of other accessories of the protection door except the door.

(5) In the fireproof and explosion-proof tunnel protection door system of the present invention, each protection door leaf has at least one hoisting chain connected with the cave wall, and the hoisting chain restrains the door body from the inside of the cavern with the hoisting chain and the wall body, It is guaranteed that the door body cannot break through the wall of the door opening and collapse to the track side in extreme cases.

Description of drawings

1 is a top view of a fire-proof and explosion-proof tunnel protection door system according to an embodiment of the present invention;

2 is a schematic diagram of a pouring hole involved in a fire-proof and explosion-proof tunnel protection door system according to an embodiment of the present invention;

Fig. 3 is a partial enlarged view of region I in Fig. 1 according to the embodiment of the present invention;

4 is a side view of a fireproof and explosion-proof tunnel protection door system according to an embodiment of the present invention;

Fig. 5 is the partial enlarged view of II region of Fig. 4 of the present invention;

FIG. 6 is a top view 2 of a fire-proof and explosion-proof tunnel protection door system according to an embodiment of the present invention;

In all drawings, the same reference numerals denote the same technical features, specifically: 1-cavity side panel, 2-tunnel side panel, 3-refractory layer, 4-casting hole, 5-steel truss, 6- Expansion bolts, 7-chemical bolts, 8-door cover, 9-door frame, 10-door leaf, 11-lifting chain, 12-partition wall reinforced concrete.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

Figure 1 is a top view of a fireproof and explosion-proof tunnel protection door system according to an embodiment of the present invention. The door leaf includes a cavern side panel 1, a tunnel side panel 2 and a refractory layer 3. The cave side of the protective door leaf is the cavern side panel 1, and the tunnel side of the protective door leaf is the tunnel side panel 2. In addition to high-strength alloy steel panels, the cave side panels 1 and tunnel side panels 2 can also be selected such as glass fiber reinforced plastic panels, stainless steel panels, etc. to ensure the rigidity of the protective door. Between the side panel 1 of the cavern and the side panel 2 of the tunnel is a refractory layer 3. The refractory material in the refractory layer 3 can be selected from materials such as glass fiber reinforced concrete, ordinary fiber reinforced concrete, perlite, etc., to ensure the fire resistance and explosion resistance of the door body. 2 is a schematic diagram of a pouring hole involved in a fire-proof and explosion-proof tunnel protection door system according to an embodiment of the present invention. In the fire-proof and explosion-proof tunnel protection door system of the present invention, the side panel 2 of the tunnel is a whole panel for resisting wind pressure. The side panel 1 of the cavern is provided with a pouring hole 4, and the side panel 1 of the cavern and the side panel 2 of the tunnel are provided with pouring holes 4. There is a steel truss 5 composed of square steel pipes arranged in a crisscross pattern to ensure the strength of the door. tightness. A plurality of filling space units are formed between the transverse steel truss 5 and the longitudinal steel truss 5 and the two-layer panels, and pouring holes 4 are respectively arranged in each filling space unit. The refractory material separately fills each filling space unit through each pouring hole 4, which effectively avoids the uneven filling caused by the overall filling, which leads to the problem of uneven stress on the entire fireproof and explosion-proof protective door. The fireproof and explosion-proof tunnel protective door system of the present invention is composed of a protective door door body sandwich structure formed by a cavern side panel, a refractory layer and a tunnel side panel, wherein the two-layer panels ensure the rigidity of the protective door, and the refractory layer material provides good Thermal insulation, fire resistance and explosion resistance properties.

Preferably, the thickness of the side panel 1 of the cavern and the side panel 2 of the tunnel is 2 mm.

Preferably, the refractory layer 3 is made of glass fiber reinforced concrete, which is a cement-based composite material composed of cement slurry, mortar or concrete as the base material and glass fiber as the reinforcing material, which has excellent tensile, flexural, It has the characteristics of impact strength, elongation and toughness, low thermal conductivity of glass fiber, good chemical stability, wide operating temperature range, non-toxic, odorless, fireproof, sound absorption, etc. It is an ideal fireproof and explosion-proof material. Filling the glass fiber reinforced concrete refractory material between the two layers of steel plates of the protective door can not only ensure the strength of the tunnel protective door body and withstand the wind load of the train, but also meet the requirements that the fire resistance limit is not less than 3 hours and the explosion resistance load is not less than 0.1MPa.

Further, Fig. 3 is a partial enlarged view of region I in Fig. 1 of the embodiment of the present invention. As shown in Fig. 3, the protective door leaf 10 comprises a cave side panel 1, a tunnel side panel 2 and a refractory layer 3. A lifting chain 11 is arranged between one side and the reinforced concrete 12 of the partition wall. Among them, bolt holes are reserved in the cavern side panel 1 and the refractory layer 3 of the protective door leaf 10, and the chain mounting piece at one end of the lifting chain 11 is fixed to the cavern side panel 1 and the refractory layer 3 by bolts, washers and nuts. Inside the reserved bolt holes, the chain mounting piece at the other end of the hoisting chain 11 is fixedly connected to the mounting support on the reinforced concrete 12 of the partition wall through expansion bolts 6 and washers. In addition, one end of the protective door leaf 10 is provided with a loose leaf, and the other end of the loose leaf is connected to the door frame 9 and the door cover 8 in turn through bolts and a backing plate. 7. Fixed connection. Compared with the expansion anchor bolt 6, the chemical anchor bolt 7 uses a special chemical adhesive to glue and fix the screw in the drilling hole of the concrete base material, so as to realize the composite part anchored to the fixed part and increase the protection. The overall strength of the door. The protective door adopts a hoisting chain to connect the various parts of the door body with the cave wall reliably, so as to prevent the door body from falling to the track side under abnormal conditions.

Further, fire-proof and explosion-proof blocking materials are provided in the hoisting chain 11, the side panel 1 of the cavern and the reserved bolt holes in the refractory layer 3, between the door frame 9 of the protective door and the reinforced concrete 12 of the partition wall, and in the bolt installation holes, Fireproof and anti-explosion blocking materials are used to improve the fire-proof and anti-explosive performance of other accessories (such as safety chains, door frames, bolts, etc.) of the protective door except for the door, and ensure the overall fire-proof and anti-explosive performance of the protective door. Materials include organic fire blocking materials, inorganic fire blocking materials and fire blocking packages. The organic fire blocking material is made of organic synthetic resin as a binder, adding fire retardants, fillers, etc. and rolling. The blocking material does not solidify for a long time, and has good plasticity. Used in conjunction with fire packs.

Further, FIG. 4 is a side view of a fireproof and explosion-proof tunnel protection door system according to an embodiment of the present invention. Fig. 5 is a partial enlarged view of the II area of Fig. 4 of the present invention. Combined with Fig. 4 and Fig. 5, the height of the lifting chain 11 from the ground is 1/3 to 2/3 of the height of the side panel 1 of the protective door cavern. The door and door leaf is connected with at least one lifting chain 11 to the wall of the cavern. The lifting chain 11 restrains the door body from the inside of the cavern with the lifting chain and the wall to ensure that the door body cannot break through the wall of the door hole and collapse to the track side in extreme cases. .

Preferably, FIG. 6 is a second plan view of a fireproof and explosion-proof tunnel protection door system according to an embodiment of the present invention. As shown in the figure, the protective door is a double-door structure, and the door lock of the protective door is locked up and down. At least one lifting chain 11 is arranged on the protective door, one end of the lifting chain 11 is connected to the wall, and the other end is fixed and indirectly connected to the side panel 1 and the refractory layer 3 of the cavern through bolts.

Preferably, the surfaces of the side panel 1 of the cavern and the side panel 2 of the tunnel are coated with a fireproof layer, and the surfaces are coated with fire-resistant spray paint. And all materials need to be treated to prevent moisture and rust, and coated with structural metal glue.

Preferably, the pouring of the refractory layer 3 is carried out in the factory to ensure that the performance of the entire protective door is stable. The size of the door body is designed according to the size of the door opening on site. The frame and panel are prefabricated and pre-welded according to the design size. After the welding is completed, the refractory layer is poured, solidified, and demolded. seal. The door lock form of the protective door is to lock up and down. The door leaves open to the inside of the cave. The protective door adopts channel steel as the threshold, and the top surface of the threshold is flush with the ground. The door body gap is sealed with structural metal glue.

Compared with the existing fire-proof and anti-explosion scheme of coating the surface of the outer steel plate of the protective door with a fire-resistant coating, the "sandwich" fire-proof and anti-explosive tunnel protective door structure involved in the present invention has the advantages of high fire rating, strong anti-explosion load and chemical stability. Good, not easy to fall off and damage. It can be directly used in the manufacture of protective doors such as horizontal passages in tunnels, equipment caves, inclined shafts, and emergency rescue stations. On the basis of ensuring the structural strength of the tunnel protection door, the invention increases the fire protection and anti-explosion grades of the door body, and satisfies the relevant requirements such as "Code for Fire Protection of Railway Engineering Design" and the safety requirements for railway operation and transportation.

Those skilled in the art can easily understand that the above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention, etc., All should be included within the protection scope of the present invention.

Claims (10)

1. A fire-proof and explosion-proof tunnel protection door system, characterized in that, comprising a cavern side panel (1), a tunnel side panel (2) and a refractory layer (3); wherein, The cavern side panel (1) is arranged on the cave side of the protective door, the tunnel side panel (2) is arranged on the tunnel side of the protective door, and the cavern side panel (1) is connected to the tunnel side. There are steel trusses (5) arranged in a criss-cross pattern between the panels (2); and, The transverse and longitudinal steel trusses (5) are respectively fixedly connected to the side panels (1) of the cavern and the side panels of the tunnel (2) to form a plurality of filling space units, each of which is in the filling space unit. Refractory materials are respectively filled, and a refractory layer (3) is formed between the side panels (1) of the cavern and the side panels (2) of the tunnel, thereby forming a protective door system with a sandwich structure. 2. A fire-proof and explosion-proof tunnel protection door system according to claim 1, characterized in that, each of the filling space units has at least one pouring hole (4), and the pouring hole (4) is arranged in the On the side panel (1) of the cavern, the side panel (2) of the tunnel is a whole panel. 3. A fire-proof and explosion-proof tunnel protection door system according to claim 1 or 2, wherein the refractory material is glass fiber reinforced concrete, common fiber reinforced concrete or perlite material. 4. A fire-proof and explosion-proof tunnel protection door system according to any one of claims 1-3, characterized in that the steel truss (5), the side panel (1) of the cavern, the tunnel side The panels (2) are fixedly connected by bolts or welding. 5. A fire-proof and explosion-proof tunnel protection door system according to any one of claims 1-4, characterized in that, the side panel (1) of the cavern, the side panel (2) of the tunnel and the fire-resistant The layer (3) constitutes the protective door leaf (10), and a hoisting chain (11) is arranged between one side of the protective door leaf (10) and the reinforced concrete (12) of the partition wall. 6. A fire-proof and explosion-proof tunnel protection door system according to claim 5, characterized in that, the chain mounting piece at one end of the lifting chain (11) is connected to the side panel of the cave through bolts, washers and nuts. (1) and reserved bolt holes in the refractory layer (3) for fixed connection, and the chain mounting piece at the other end of the lifting chain (11) is connected to the partition wall reinforcement through expansion bolts (6) and washers The mounting supports on the concrete (12) are fixedly connected. 7. A fire-proof and explosion-proof tunnel protection door system according to claim 5 or 6, wherein the height of the lifting chain (11) from the ground is 1/1 of the height of the side panel (1) of the cavern 3 to 2/3. 8. A fireproof and explosion-proof tunnel protection door system according to any one of claims 5-7, characterized in that, at least one of the hoisting chains (11) is provided on each of the protection doors (10) ), and is connected with the partition wall reinforced concrete (12). 9. A fire-proof and explosion-proof tunnel protection door system according to any one of claims 5-8, characterized in that, one end of the protection door leaf (10) is provided with a loose leaf, and the other end of the loose leaf is provided with a bolt and a gasket The plate is sequentially connected with the door frame (9) and the door cover (8), the door cover (8) is a rectangular structure, and the two sides are fixedly connected to the partition wall reinforced concrete (12) by several chemical bolts (7). 10. A fire-proof and explosion-proof tunnel protection door system according to any one of claims 5-8, characterized in that, the lifting chain (11), the side panel (1) of the cavern and the fire-resistant Fire-proof and explosion-proof sealing materials are arranged in the reserved bolt holes in the layer (3), between the door frame (9) and the partition wall reinforced concrete (12), and in the installation holes of the bolts.