WO2019136904A1 - Fire protection structure applied to segment joint of immersed tunnel and having linear moving mechanism - Google Patents

Abstract

A fire protection structure applied to a segment joint of an immersed tunnel and having a linear moving mechanism comprises a watertight band assembly (10) and a fire protection assembly (30) that are connected between two adjacent tunnel segments (40, 50) and spaced apart from each other. The fire protection assembly (30) is positioned at an inner side of the watertight band assembly (10). The fire protection assembly (30) comprises: a protection plate assembly (31), comprising a first fire protection plate assembly (311) and a second fire protection plate assembly (313) that are spaced apart from each other and a heat insulation member (312) fixed therebetween; a movable connecting assembly (33), the first fire protection plate assembly (311) and the second fire protection plate assembly (313) being movably connected to the second tunnel segment (50) by means of the movable connecting assembly (33); and a flexible fire protection band (35), positioned between the first fire protection plate assembly (311) and the second fire protection plate assembly (313), wherein one end of the flexible fire protection band (35) is connected to the heat insulation member (312), and the other end thereof is connected to the second tunnel segment (50).

Description

 Immersed tunnel pipe joint joint fireproof structure with linear moving mechanism

Technical field

The present application relates to the field of immersed tunnel technology, and in particular to an immersed tunnel pipe joint joint fireproof structure with a linear moving mechanism.

Background technique

In the tunnel construction method of the immersed pipe method, the joint between the two adjacent pipes needs to be connected with a waterproof component such as a rubber water stop rubber strip to prevent external moisture from penetrating into the pipe through the joint, and the waterproof component is required In addition to the longitudinal telescopic displacement between the tunnel joints, it is necessary to meet the fire protection requirements within the design period (for example, 120 years) to ensure the overall fire performance of the tunnel structure. If there is a fire in the pipeline, the fire will inevitably affect the service life of the waterproof component. Therefore, it is common practice to install a protective plate to achieve the fire protection requirements of the waterproof component. However, the existing fireproof panel has the following problems: only setting The fireproof board has been tested and tested. The existing fireproof design meets the fire protection requirement of two hours. That is, the fireproof component will not be affected within two hours of the fire in the pipeline. The two-hour fireproof aging has not been able to achieve effective fire protection requirements. At the same time, the two adjacent pipes need longitudinal displacement, and the existing joint structure only has one fire board and cannot meet the displacement requirements.

Summary of the invention

The main object of the present application is to provide an immersed tunnel pipe joint joint fireproof structure with a linear moving mechanism, which aims to enable the fireproof component to simultaneously meet the requirements of fireproofing and displacement.

To achieve the above object, an immersed tunnel pipe joint joint fireproof structure with a linear moving mechanism proposed by the present application includes a waterproof belt assembly and a fireproof assembly, and the waterproof belt assembly and the fireproof assembly are connected to an adjacent immersed tunnel tube. Between the first pipe and the second pipe, the fireproof component is spaced apart from the waterproof tape component and located inside the waterproof tape assembly, and the fireproof component comprises:

a fender assembly comprising a first fireboard assembly and a second fireproof panel assembly spaced apart, and a thermal insulation fixedly coupled between the first fireproof panel assembly and the second fireproof panel assembly;

a movable connection assembly, the movable connection assembly including a first movable connection, the first movable connection being fixed to the second duct and abutting the first fireproof board assembly away from the second fireproof board assembly The first movable connecting member is provided with a first strip-shaped hole; the movable connecting assembly further includes a first limiting post, the first limiting post protruding from the first fireproof panel assembly a surface of the second fireproof board passing through the first strip hole; the first fireproof board assembly is fixedly connected to the first duct away from an end of the second duct; the movable connection assembly further includes a second movable connecting member, one end of the second fireproof board assembly is fixedly connected to the first duct, and the other end is movably connected to the second duct by the second movable connecting member;

A flexible fireproof belt is disposed between the first fireproof board assembly and the second fireproof board assembly and connects the heat insulating member and the second duct.

Optionally, the movable connecting component further includes a stopper abutting against a side of the first movable connecting member facing away from the first fireproof board assembly, and fixedly connected to the first A limit column.

Optionally, the first fireproof board assembly is provided with a first connecting hole, the stopping member is provided with a second connecting hole, and the first limiting post passes through the first connecting hole, the first strip shape The hole and the second connecting hole are fixedly connected to the first fireproof board assembly and the stopper.

Optionally, the first fireproof board assembly includes a first fireproof board and a fixed fireproof board, the first fireproof board is fixedly connected to the first duct, and the fixed fireproof board is located at the first fireproof board and the second Between the pipes, the fender assembly further includes a connecting member, the first fireproof plate, the fixed fireproof plate, the heat insulating member and the second fireproof plate assembly are fixedly connected to the connecting member;

The first connecting hole is opened in the fixed fireproof board.

Optionally, the first fireproof board comprises three layers of fireproof composite boards, and the three layers of the fireproof composite boards are fixedly connected to the connecting piece, and the fixed fireproof board comprises three layers of fixed fireproof composite boards. The three layers of the fixed fireproof composite board are fixedly connected to the connecting member, the first connecting hole runs through the three layers of the fixed fireproof composite board, and the fireproof composite board is butted to the fixed fireproof composite board.

Optionally, each of the fireproof composite panels of the first fireproof panel has a thickness of h1, 9.5 mm≤h1≤12 mm, and the fixed fireproof composite panel has the same thickness as the fireproof composite panel.

Optionally, the second movable connecting member is fixedly connected to the second duct, and abuts against a side of the second fireproof board assembly away from the first fireproof board assembly, and the second movable connecting member is opened with a second a strip-shaped hole, the movable connecting assembly further includes a second limiting post protruding from a side of the second fireproof board assembly away from the first fireproof board assembly, and passing through the a second strip-shaped hole, the end of the second limiting post abutting against a side of the second movable connecting member facing away from the second fireproof board assembly.

Optionally, the second movable connecting member further includes a suspension member and a fireproof cover plate, the hanging member is fixedly connected to the second pipe, and abuts against the fireproof cover plate facing away from the second fireproof plate assembly The second strip-shaped hole extends through the suspension member and the fireproof cover, and an end of the second limiting post abuts against a side of the suspension member facing away from the fireproof cover.

Optionally, the suspension member includes a first connecting arm and a second connecting arm disposed at an angle, the first connecting arm is fixedly connected to the second pipe, and the second connecting arm is fixedly connected to the fireproof cover a plate, the second strip hole extending through the second connecting arm.

Optionally, the second fireproof board assembly comprises a three-layer laminated and fixedly connected fireproof composite board, and the second limiting pillar protrudes from the fireproof composite board adjacent to the second movable connecting piece. .

Optionally, each of the fireproof composite panels of the second fireproof panel assembly has a thickness of h2, 9.5 mm≤h2≤12 mm.

Optionally, the adjacent end faces of the first pipe and the second pipe respectively protrude with a first connecting segment and a second connecting segment, and the waterproof strap assembly connects the first connecting segment and the second connecting segment, a waterproof strap assembly, a first connecting section, a second connecting section, an end surface of the first duct and an end surface of the second duct, and a fireproof panel assembly enclosing the fireproof space, the second fireproof panel assembly and the heat insulating member are located Within the fireproof space.

In the technical solution of the present application, the waterproof belt assembly is installed between the adjacent first pipe and the second pipe to prevent external moisture from entering the pipe, and the first pipe and the second pipe may be any adjacent two pipes. The fire protection assembly is placed inside the waterproof belt assembly to prevent the internal fire from affecting the waterproof belt assembly, thereby protecting the waterproof belt assembly. Further, the fireproof component is set as the first fireproof board, the heat insulation component, and the second fireproof board. If the fire occurs in the pipeline, the fire energy can be gradually blocked by the three-layer structure of the first fireproof board, the heat insulation board and the second fireproof board, so that The fire inside the pipe has the least impact on the waterproof belt assembly. After testing, the fire protection design as described above can achieve a minimum of four hours of fire protection requirements, that is, the fire pipe assembly will not be affected within four hours of fire in the pipeline. , which greatly improves the service life of the waterproof belt assembly.

One end of the first fireproof panel assembly and the second fireproof panel assembly are fixedly coupled to the first conduit, and the other end of the first fireproof panel assembly and the second fireproof panel assembly are movably coupled to the second conduit by the movable connection assembly. The movable connection assembly includes a first movable connection and a second movable connection, and the first movable connection and the second movable connection are both fireproof board structures. Specifically, the first movable connecting member is fixed to the second duct and abuts the side of the first fireproof board assembly away from the second fireproof board assembly, and the first movable connecting member is provided with the first strip hole, and the first fireproof board assembly a first limiting post is protruded from a surface facing away from the second fireproof board. The first limiting post passes through the first strip-shaped hole, and the first limiting post moves relative to the first strip-shaped hole, thereby changing the first The longitudinal spacing of the pipe and the second pipe, when the longitudinal spacing of the first pipe and the second pipe becomes larger, the first pipe and the second pipe can still be blocked by the first movable connecting member, and the fireproof performance is maintained. . The second fireproof board assembly is movably connected to the second duct by the second movable connecting member, so that when the longitudinal distance between the first duct and the second duct becomes larger, the first duct and the second duct are further connected by the second movable joint The block is blocked to improve the fire resistance of the pipe joint.

DRAWINGS

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings to be used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present application, and other drawings can be obtained according to the structures shown in the drawings without any creative work for those skilled in the art.

1 is a schematic structural view of an embodiment of a pontoon tunnel pipe joint joint fireproof structure with a linear moving mechanism according to the present application;

Figure 2 is a partial enlarged view of a portion A in Figure 1;

Figure 3 is a partial enlarged view of B in Figure 2;

Figure 4 is a partial enlarged view of the portion C in Figure 2.

Description of the reference numerals:

Label	name	Label	name
10	Waterproof belt assembly	3331	Suspension
30	Fire protection component	3331a	First connecting arm
31	Shield assembly	3331b	Second connecting arm
311	First fire board assembly	3332	Second strip hole
3111	Fireproof board	3333	Fireproof cover
3111a	Fireproof composite board	334	First limit column
3113	Fixed fire board	335	Second limit column
3113a	Fixed fireproof composite board	34	Auxiliary fire zone
312	Thermal insulation	35	Flexible fire zone
313	Second fire board assembly	36	Connector
33	Active connection component	40	First pipe
331	First activity connector	41	First connection segment
3311	First hole	50	Second pipe
332	Stop	51	Second connection segment
333	Second activity connector

The implementation, functional features and advantages of the present application will be further described with reference to the accompanying drawings.

Detailed ways

The technical solutions in the embodiments of the present application are clearly and completely described in the following with reference to the drawings in the embodiments of the present application. It is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without departing from the inventive scope are the scope of the present application.

It should be noted that all directional indications (such as up, down, left, right, front, back, ...) in the embodiments of the present application are only used to explain the components between a certain posture (as shown in the drawing). Relative positional relationship, motion situation, etc., if the specific posture changes, the directional indication also changes accordingly.

In the present application, the terms "connected", "fixed" and the like should be understood broadly, unless otherwise explicitly stated and defined. For example, "fixed" may be a fixed connection, or may be a detachable connection, or may be integrated; It may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be an internal connection of two elements or an interaction relationship of two elements unless explicitly defined otherwise. For those skilled in the art, the specific meanings of the above terms in the present application can be understood on a case-by-case basis.

In addition, the descriptions of "first", "second", and the like in this application are used for descriptive purposes only, and are not to be construed as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" or "second" may include at least one of the features, either explicitly or implicitly. In addition, the technical solutions between the various embodiments may be combined with each other, but must be based on the realization of those skilled in the art, and when the combination of the technical solutions is contradictory or impossible to implement, it should be considered that the combination of the technical solutions does not exist. Nor is it within the scope of protection required by this application.

Referring to Figures 1 to 4, the present application proposes an immersed tube tunnel joint fire protection structure having a linear moving mechanism.

In the embodiment of the present application, the immersed tube tunnel joint fireproof structure with a linear moving mechanism includes a waterproof belt assembly 10 and a fireproof assembly 30, and the waterproof belt assembly 10 and the fireproof assembly 30 are connected to the first adjacent to the immersed tunnel tube. Between the duct 40 and the second duct 50, the fire protection assembly 30 is spaced from the waterproof belt assembly 10 and located inside the waterproof belt assembly 10, and the fire protection assembly 30 includes:

The fender assembly 31 includes a first fireboard assembly 311 and a second fireproof panel assembly 313 spaced apart from each other, and a thermal insulation member fixedly coupled between the first fireproof panel assembly 311 and the second fireproof panel assembly 313. 312;

The movable connecting component 33 includes a first movable connecting member 331 fixed to the second duct 50 and abutting the side of the first fireproof board assembly 311 away from the second fireproof board assembly 313 The first movable connecting member 331 is provided with a first strip hole 3311. The movable connecting assembly 33 further includes a first limiting post 334 protruding from the first fireproof board assembly 311 away from the second fireproof board assembly. The surface of the 313 passes through the first strip hole 3311; the first fireproof plate assembly 311 is fixedly connected to the first pipe 40 away from the end of the second pipe 50; the movable connection assembly 33 further includes a second movable connecting member 333, the second fireproof One end of the plate assembly 313 is fixedly connected to the first pipe 40, and the other end is movably connected to the second pipe 50 through the second movable connecting member 333;

The flexible fireproof belt 35, the flexible fireproof belt 35 is located between the first fireproof board assembly 311 and the second fireproof board assembly 313, and connects the heat insulating member 312 and the second duct 50.

In the technical solution of the present application, the waterproof belt assembly 10 is installed between the adjacent first duct 40 and the second duct 50 to prevent external moisture from entering the duct, and the first duct 40 and the second duct 50 may be any phase. Two pipes adjacent. The fire protection assembly 30 is disposed inside the waterproof belt assembly 10 to prevent the internal fire of the pipe from affecting the waterproof belt assembly 10, thereby protecting the waterproof belt assembly 10. Further, the fireproof assembly 30 is disposed as a first fireproof board assembly 311, a heat insulation member 312, and a second fireproof board assembly 313. If the fire occurs in the pipeline, the fire energy can be caused by the first fireproof board assembly 311, the heat insulation member 312, and the second fire prevention. The three-layer structure of the plate assembly 313 is gradually blocked, so that the influence of the fire inside the pipe on the waterproof belt assembly 10 is minimized. After the test, the fire protection design as described above can achieve a minimum of four hours of fire protection requirements, that is, inside the pipeline. The waterproof belt assembly 10 is not affected within four hours of the fire, thereby greatly increasing the service life of the waterproof belt assembly 10.

One ends of the first fireproof board assembly 311 and the second fireproof board assembly 313 are fixedly connected to the first duct 40, and the other ends of the first fireproof board assembly 311 and the second fireproof board assembly 313 pass through the movable connection assembly 33 and the second duct 50. Active connection. The movable connecting assembly 33 includes a first movable connecting member 331 and a second movable connecting member 333, and the first movable connecting member 331 and the second movable connecting member 333 are both fireproof board structures. Specifically, the first movable connecting member 331 is fixed to the second duct 50 and abuts the side of the first fireproof board assembly 311 away from the second fireproof board assembly 313. The first movable connecting member 331 is provided with the first strip hole 3311. A first limiting post 334 is protruded from a surface of the first fireproof board assembly 311 facing away from the second fireproof board assembly 313. The first limiting post 334 passes through the first strip hole 3311, and the first limiting post 334 is in the first The relative movement occurs in the one-shaped hole 311, thereby changing the longitudinal spacing of the first pipe 40 and the second pipe 50. When the longitudinal distance between the first pipe 40 and the second pipe 50 is increased, the first pipe 40 and the second pipe are The first movable connecting member 331 can still be blocked between 50 to maintain good fireproof performance. The second fire board assembly 313 is movably coupled to the second duct 50 by the second movable joint 333 such that the first duct 40 and the second duct 50 become between the first duct 40 and the second duct 50 when the longitudinal spacing becomes larger. Further blocking by the second movable connecting member 333 improves the fireproof performance of the pipe joint.

It can be understood that the fixed connection between the first fireproof board assembly 311 and the second fireproof board assembly 313 and the pipe can be connected by bolts and fixing plates, and the activities of the first fireproof board assembly 311 and the second fireproof board assembly 313 and the pipeline The connection may be provided with a sliding slot at the end of the second duct 50, and the ends of the first fire board assembly 311 and the second fire board assembly 313 are inserted into the sliding slot for sliding. Of course, it can be understood that the connection of the first fireproof panel assembly 311 and the second fireproof panel assembly 313 to the duct 50 can also be in other manners, and is also within the scope of the present application.

When the first pipe 40 and the second pipe 50 are longitudinally moved by the movable joint assembly 33, the flexible fireproof belt 35 can be matched for expansion and contraction, thereby further preventing temperature from the first fireboard assembly 311 and the second fireproof panel assembly 313. The portion where the heat insulator 312 is disposed is transmitted to further improve the fireproof capability of the fire protection assembly 30.

The flexible fireproof belt 35 is made of asbestos, and is installed in a pre-compression manner at the time of installation, that is, at the same height, the density of the asbestos is made larger, so that the first duct 40 and the second duct 50 are in the longitudinal displacement process. The flexible fireproof belt 35 can extend longitudinally to meet the requirements of longitudinal displacement, and the flexible fireproof belt 35 can be extended to match the movable joint assembly 33 for better heat insulation.

With reference to FIG. 3, in an embodiment of the present application, the movable connecting component 33 further includes a stopper 332 that abuts against a side of the first movable connecting member 331 facing away from the first fireproof board assembly 311, and is fixedly connected. The first limit column 334.

The stopper 332 is a fireproof board structure, and the arrangement of the stopper 332 can not only improve the reliability of the joint during the movement of the first duct 40 and the second duct 50, but also further improve the fire prevention at the first fireproof board assembly 311. ability.

In one embodiment of the present application, the first fireproof plate assembly 311 is provided with a first connecting hole, and the stopping member 332 is provided with a second connecting hole. The first limiting post 334 passes through the first connecting hole and the first strip hole 3311. And the second connecting hole, the first fire board assembly 311 and the stopper 332 are fixedly connected.

The first limiting post 334 can be a screw or a bolt. The first limiting post 334 passes through the first connecting hole, the first strip hole 3311 and the second connecting hole, and is screwed to the two of the limiting post by a nut. a nut abuts against a side of the first fireproof panel assembly 311 facing away from the stopper 332, and another nut abuts against a side of the stopper 332 facing away from the first fireproof panel assembly 311, thereby stopping the stopper The member 332 is fixed to the first fireproof board assembly 311, and the first movable connecting member 331 is clamped between the first fireproof board assembly 311 and the stopper 332 when the first duct 40 and the second duct 50 are displaced in the longitudinal direction. The first movable connecting member 331 can move relative to the first fireproof board assembly 311 and the stopping member 332. The cooperation of the first limiting post 334 and the first strip-shaped hole 3311 limits the first duct 40 and the second duct 50. The range of relative movement.

In an embodiment of the present application, the first fireproof board assembly 311 includes a fireproof board 3111 and a fixed fireproof board 3113. The fireproof board 3111 is fixedly connected to the first duct 40, and the fixed fireproof board 3113 is located between the fireproof board 3111 and the second duct 50, and is protected. The plate assembly 31 further includes a connecting member 36, the fireproof plate 3111, the fixed fireproof plate 3113, the heat insulating member 312 and the second fireproof plate assembly 313 are fixedly connected to the connecting member 36;

The first connecting hole is opened in the fixed fireproof plate 3113.

The first fireproof board assembly 311 is split into a structure in which the fireproof board 3111 and the fixed fireproof board 3113 are spliced to facilitate the transportation of the board and the installation on the construction site.

The connecting member 36 can be a plurality of channel steels, a combination structure of channel steel and angle steel, and a connecting structure in which the channel steel and other various shapes of connecting steel materials are combined, and the connecting member 36 is mainly used for the first part. The fire board assembly 311, the heat insulator 312, and the second fire board assembly 313 are fixedly coupled.

In the embodiment of the present application, the range of the thickness H1 of the first fireproof board assembly 311 is 28.5 mm ≤ H1 ≤ 36 mm.

The first fireproof board assembly 311 plays the role of preliminary fire prevention. Therefore, the thickness should not be too thin. If it is too thin to be used for fire prevention purposes, the fire protection purpose can be achieved by setting it to 28.5 mm or more. Of course, the thickness of the first fireproof board assembly 311 should not be too thick, and excessive thickness may affect the overall assembly of the pipe. Therefore, the thickness of the first fireproof board assembly 311 is set to be 36 mm or less.

The thickness of the fireproof board 3111 and the fixed fireproof board 3113 are both 28.5 mm to 36 mm.

In order to facilitate the transportation and assembly at the construction site, the fireproof board 3111 comprises three layers of fireproof composite board 3111a, and the three layers of fireproof composite board 3111a are fixedly connected with the connecting piece 36. The fixed fireproof board 3113 comprises three layers of fixed fireproof composite boards. 3113a, the three-layer fixed fireproof composite board 3113a is fixedly connected with the connecting member 36. The first connecting hole runs through the three-layer fixed fireproof composite board 3113a, and the fireproof composite board 3111a is butted to a fixed fireproof composite board 3113a. The three-layer fireproof composite panel 3111a and the three-layer fixed fireproof composite panel 3113a can be assembled by means of self-tapping screws, or assembled by other means, all within the scope of protection of the present application.

Further, the thickness of each fireproof composite panel 3111a of the fireproof panel 3111 is h1, 9.5 mm ≤ h1 ≤ 12 mm, and the fixed fireproof composite panel 3113a is consistent with the thickness of the fireproof composite panel 3111a.

In order to achieve a better fireproof effect, the following settings can be adopted: in the three-layer fireproof composite panel 3111a, the thickness of the steel sheet from bottom to top is gradually reduced, and the thickness of the three members is still required to satisfy 28.5 mm ≤ H1 ≤ 36 mm. Because the thickness of the steel plate located below is sufficiently thick, when a large fire is generated, the steel plate located below serves as the first layer to resist, and does not deform due to excessive fire.

The fireproof composite board is a composite steel plate, the inner layer is a cement core layer with fibers added, and the outer side is a 0.5 mm thick perforated galvanized steel sheet.

With reference to FIG. 4, in the embodiment of the present application, the second movable connecting member 333 is fixedly connected to the second duct 50, and abuts against the side of the second fireproof board assembly 313 away from the first fireproof board assembly 311, and the second movable connecting member. The 333 is provided with a second strip hole 3332. The movable connecting component 33 further includes a second limiting post 335. The second limiting post 335 protrudes from the side of the second fireproof board assembly 313 away from the first fireproof board assembly 311, and is worn. The second strip hole 3332 has an end portion abutting against a side of the second movable joint 333 facing away from the second fireproof panel assembly 313.

When the first pipe 40 and the second pipe 50 are displaced in the longitudinal direction, the second limiting post 335 moves in the second strip hole 3332 and is stopped by the side wall of the second strip hole 3332 to limit the first The longitudinal extent of movement of the conduit 40 and the second conduit 50. The cooperation of the second movable link 333 with the first movable link 331 causes the first duct 40 and the second duct 50 to move more smoothly during displacement.

Continuing to refer to FIG. 4, the second movable connecting member 333 further includes a hanging member 3331 and a fireproof cover 3333. The hanging member 3331 is fixedly connected to the second duct 50 and abuts against the side of the fireproof cover 3333 facing away from the second fireproof board assembly 313. The second strip hole 3332 extends through the hanging member 3331 and the fireproof cover 3333, and the end of the second limiting post 335 abuts against the side of the hanging member 3331 facing away from the fireproof cover 3333.

The suspension member 3331 is fixed to the second duct 50 for providing the bearing capacity of the connection. The fireproof cover 333 is located below the suspension member 3331, and can protect the suspension member 3331 from fire when the inside of the pipeline is ignited.

Further, the suspension member 3331 includes a first connecting arm 3331a and a second connecting arm 3331b disposed at an angle. The first connecting arm 3331a is fixedly connected to the second duct 50, and the second connecting arm 3331b is fixedly connected to the fireproof cover 3333, and the second The strip hole 3332 extends through the second connecting arm 3331b.

The first connecting wall 3331a may be a steel square tube, and the second connecting pipe 50 is fixedly connected by a blasting screw. The second connecting wall 3331b may be an inverted T-shaped steel member, and the two second strip-shaped holes penetrate the two sides of the T-shaped structure. wing.

Further, the first connecting arm 3331a and the second connecting arm 3331b are perpendicular to each other. The installation requirements of the second fire board assembly 313 and the second duct 50 are ensured.

In the embodiment of the present application, the range of the thickness H2 of the second fireproof board assembly 313 is 28.5 mm ≤ H2 ≤ 36 mm.

The second fireproof board assembly 313 is located above the first fireproof board assembly 311, and the second fireproof board assembly 313 functions as a final heat insulation. Therefore, the thickness is also not too thin, and if it is too thin, the temperature cannot be insulated. For the above 28.5 mm, the above-mentioned isolation temperature can be achieved. Of course, the thickness of the second fireproof board assembly 313 should not be too thick, and excessive thickness may affect the overall assembly of the pipe. Therefore, the thickness of the second fireproof board assembly 313 is set to be 36 mm or less.

In order to facilitate transportation and assembly, the second fireproof panel assembly 313 includes a three-layer laminated and fixedly connected fireproof composite panel, and the second limiting pillar 335 is protruded from a fireproof composite panel adjacent to the second movable connecting member 333. The three-layer fireproof composite panel is fixedly connected to the connecting member 36.

Further, each fireproof composite panel of the second fireproof panel assembly 313 has a thickness of h2, 9.5 mm ≤ h2 ≤ 12 mm.

If the second fireproof board assembly 313 is provided as a one-piece board, it is inconvenient in transportation and assembly. Therefore, the three-layer laminated fireproof composite board can be conveniently transported and assembled. The thickness of the fireproof composite panel of each layer should be 9.5mm to 12mm, so that the overall thickness meets the fire protection requirements.

The three-layer fireproof composite board can be assembled by means of self-tapping screws, or can be assembled by other means, and is within the protection scope of the present application.

In an embodiment of the present application, the heat insulator 312 is asbestos. Asbestos, also known as "asbestos fiber", is a generic term for certain silicate minerals that can be broken into elastic fiber. Chemical formula: 3MgO•2SiO2•2H2O, fibrous, greenish yellow or white, white when split into floc, silky luster, elastic fiber, asbestos with acid, alkali and heat resistance, heat and electricity conductor. Therefore, the heat insulating member 312 of the present application is made of asbestos material, which can better insulate and prevent fire.

Further, the range of the thickness H3 of the heat insulating member 312 is 120 mm ≤ H3 ≤ 150 mm.

Similarly, the thickness of the heat insulating member 312 should not be too thin. If it is too thin to be used for the purpose of insulating the temperature, the above-mentioned temperature isolation can be achieved by setting it to 120 mm or more. Of course, the thickness of the heat insulating member 312 should not be too thick, and the excessive thickness may affect the overall assembly of the pipe 50. Therefore, the thickness of the heat insulating member 312 is set to be 150 mm or less.

1 and 2, in an embodiment of the present application, an end of the heat insulating member 312 facing away from the flexible fireproof belt 35 is provided with an auxiliary fireproof belt 34, one end of which is connected to the heat insulating member 312, and One end is connected to the first duct 40.

That is, when the heat insulating member 312 is installed, the two ends thereof are not directly connected to the ends of the first pipe 40 and the second pipe 50, and one end of the heat insulating member 312 is connected to the second pipe 50 through the flexible fireproof belt 35, and the other portion is connected. Attached by the auxiliary fire protection belt 34, the auxiliary fire protection belt 34 functions similarly to the flexible fire protection belt 35 to block heat transfer.

In an embodiment of the present application, the first connecting portion 41 and the second connecting portion 51 are respectively protruded from the adjacent end faces of the first duct 40 and the second duct 50, and the waterproof strap assembly 10 is connected to the first connecting portion 41 and The second connecting section 51, the waterproof strap assembly 10, the first connecting section 41, the second connecting section 51, the end surface of the first duct 40 and the end surface of the second duct 50, and the first fireproof board assembly 311 enclose a fireproof space. The second fireproof panel assembly 313 and the thermal insulation 312 are located within the fire resistant space.

The fireproof space thus provided facilitates assembly of the fireproof assembly 30 and the waterproof belt assembly 10, and makes the overall structure compact.

Further, the heat insulator 312 is mounted to the surface of the first fireproof panel assembly 311 facing the second fireproof panel assembly 313. When assembling the fire protection assembly 30, the first fireproof panel assembly 311 is first assembled, then the thermal insulation member 312 is assembled on the surface of the first fireproof panel assembly 311, and then the flexible fireproof belt 35 is assembled, and finally the second fireproof panel is assembled. Assembly 313 is assembled to complete the assembly from the whole. The upper and lower surfaces of the heat insulating member 312 can respectively abut against the upper surface of the first fireproof board assembly 311 and the lower surface of the second fireproof board assembly 313. Of course, it can also be mounted similarly as shown in the diagram of the present application. It suffices on the upper surface of the first fireproof board assembly 311.

The above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the patents of the present application, and the equivalent structural transformation, or direct/indirect use, of the present application and the contents of the drawings is used in the present invention. All other related technical fields are included in the patent protection scope of the present application.

Claims (20)

1. An immersed tube tunnel joint fireproof structure having a linear moving mechanism, comprising a waterproof belt assembly and a fireproof assembly, the waterproof belt assembly and the fireproof assembly being connected to a first pipe adjacent to the immersed tunnel pipe and Between the two pipes, the fireproof component is spaced apart from the waterproof tape component and located inside the waterproof tape assembly, and the fireproof component comprises:

   a fender assembly comprising a first fireboard assembly and a second fireproof panel assembly spaced apart, and a thermal insulation fixedly coupled between the first fireproof panel assembly and the second fireproof panel assembly;

   a movable connection assembly, the movable connection assembly including a first movable connection, the first movable connection being fixed to the second duct and abutting the first fireproof board assembly away from the second fireproof board assembly The first movable connecting member is provided with a first strip-shaped hole; the movable connecting assembly further includes a first limiting post, the first limiting post protruding from the first fireproof panel assembly a surface of the second fireproof board passing through the first strip hole; the first fireproof board assembly is fixedly connected to the first duct away from an end of the second duct; the movable connection assembly further includes a second movable connecting member, one end of the second fireproof board assembly is fixedly connected to the first duct, and the other end is movably connected to the second duct by the second movable connecting member;

   A flexible fireproof belt is disposed between the first fireproof board assembly and the second fireproof board assembly and connects the heat insulating member and the second duct.
2. The immersed tube tunnel joint joint fireproof structure with a linear moving mechanism according to claim 1, wherein the movable joint assembly further includes a stopper that abuts against the first movable joint back And a side of the first fireproof board assembly is fixedly connected to the first limiting post.
3. The immersed tube tunnel joint fireproof structure with a linear moving mechanism according to claim 2, wherein the first fireproof panel assembly is provided with a first connecting hole, and the stopper is provided with a second connecting hole. The first limiting post passes through the first connecting hole, the first strip hole and the second connecting hole, and is fixedly connected to the first fireproof board assembly and the stopper.
4. The immersed tube tunnel joint joint fireproof structure with a linear moving mechanism according to claim 3, wherein the first fireproof board assembly comprises a first fireproof board and a fixed fireproof board, and the first fireproof board is fixedly connected to the first a pipe, the fixed fireproof board is located between the first fireproof board and the second duct, the guard board assembly further comprising a connecting member, the first fireproof board, the fixed fireproof board, the heat insulation part and the second fireproof board The components are fixedly connected to the connecting member;

   The first connecting hole is opened in the fixed fireproof board.
5. The immersed tube tunnel joint fireproof structure with a linear moving mechanism according to claim 4, wherein the first fireproof board comprises three layers of fireproof composite boards, and the three layers of the fireproof composite boards are fixedly connected. The fixed fireproof board comprises three fixed fireproof composite boards arranged in a stack, and the three fixed fireproof composite boards are fixedly connected to the connecting piece, and the first connecting hole penetrates the three layers of the fixed fireproof composite A fireproof composite panel is coupled to the fixed fireproof composite panel.
6. The immersed tube tunnel joint fireproof structure with a linear moving mechanism according to claim 5, wherein each of the fireproof composite panels of the first fireproof panel has a thickness of h1, 9.5 mm ≤ h1 ≤ 12 mm, The fixed fireproof composite panel has the same thickness as the fireproof composite panel.
7. The immersed tube tunnel joint joint fireproof structure with a linear moving mechanism according to claim 1, wherein the second movable connecting member is fixedly coupled to the second duct and abuts the second fireproof board assembly away from the One side of the first fireproof board assembly, the second movable connecting member is provided with a second strip hole, the movable connecting assembly further includes a second limiting post, and the second limiting post is protruded from the second The fireproof board assembly is away from one side of the first fireproof board assembly and passes through the second strip-shaped hole, and the end of the second limiting post abuts against the second movable connecting piece facing away from the first One side of the second fireproof panel assembly.
8. The immersed tube tunnel joint fireproof structure with a linear moving mechanism according to claim 2, wherein the second movable connecting member is fixedly coupled to the second duct and abuts the second fireproof board assembly away from the One side of the first fireproof board assembly, the second movable connecting member is provided with a second strip hole, the movable connecting assembly further includes a second limiting post, and the second limiting post is protruded from the second The fireproof board assembly is away from one side of the first fireproof board assembly and passes through the second strip-shaped hole, and the end of the second limiting post abuts against the second movable connecting piece facing away from the first One side of the second fireproof panel assembly.
9. The immersed tube tunnel joint fireproof structure with a linear moving mechanism according to claim 3, wherein the second movable connecting member is fixedly coupled to the second duct and abuts the second fireproof panel assembly away from the One side of the first fireproof board assembly, the second movable connecting member is provided with a second strip hole, the movable connecting assembly further includes a second limiting post, and the second limiting post is protruded from the second The fireproof board assembly is away from one side of the first fireproof board assembly and passes through the second strip-shaped hole, and the end of the second limiting post abuts against the second movable connecting piece facing away from the first One side of the second fireproof panel assembly.
10. The immersed tube tunnel pipe joint fireproof structure with a linear moving mechanism according to claim 4, wherein the second movable connecting member is fixedly coupled to the second pipe and abuts the second fireproof board assembly away from the One side of the first fireproof board assembly, the second movable connecting member is provided with a second strip hole, the movable connecting assembly further includes a second limiting post, and the second limiting post is protruded from the second The fireproof board assembly is away from one side of the first fireproof board assembly and passes through the second strip-shaped hole, and the end of the second limiting post abuts against the second movable connecting piece facing away from the first One side of the second fireproof panel assembly.
11. The immersed tube tunnel joint fireproof structure with a linear moving mechanism according to claim 7, wherein the second movable joint further comprises a suspension member and a fireproof cover, the suspension member fixedly connecting the second conduit And abutting against a side of the fireproof cover facing away from the second fireproof panel assembly, the second strip-shaped hole penetrating the suspension member and the fireproof cover, and the end of the second limiting post is abutted Attaching the suspension member to a side facing the fireproof cover.
12. The immersed tube tunnel joint joint fireproof structure with a linear moving mechanism according to claim 8, wherein the second movable joint further comprises a suspension member and a fireproof cover, the suspension member fixedly connecting the second conduit And abutting against a side of the fireproof cover facing away from the second fireproof panel assembly, the second strip-shaped hole penetrating the suspension member and the fireproof cover, and the end of the second limiting post is abutted Attaching the suspension member to a side facing the fireproof cover.
13. The immersed tube tunnel joint joint fireproof structure with a linear moving mechanism according to claim 9, wherein the second movable joint further comprises a suspension member and a fireproof cover, the suspension member fixedly connecting the second conduit And abutting against a side of the fireproof cover facing away from the second fireproof panel assembly, the second strip-shaped hole penetrating the suspension member and the fireproof cover, and the end of the second limiting post is abutted Attaching the suspension member to a side facing the fireproof cover.
14. The immersed tube tunnel joint fireproof structure with a linear moving mechanism according to claim 11, wherein the suspension member comprises a first connecting arm and a second connecting arm disposed at an angle, the first connecting arm being fixed Connecting the second pipe, the second connecting arm is fixedly connected to the fireproof cover, and the second strip hole extends through the second connecting arm.
15. The immersed tube tunnel joint fireproof structure with a linear moving mechanism according to claim 7, wherein the second fireproof panel assembly comprises a three-layer laminated arrangement and a fixedly connected fireproof composite panel, the second limit The pillar is protruded from a fireproof composite panel adjacent to the second movable connecting member.
16. The immersed tube tunnel joint fireproof structure with a linear moving mechanism according to claim 8, wherein the second fireproof panel assembly comprises a three-layer laminated and fixedly connected fireproof composite panel, the second limit The pillar is protruded from a fireproof composite panel adjacent to the second movable connecting member.
17. The immersed tube tunnel joint fireproof structure with a linear moving mechanism according to claim 15, wherein each of the fireproof composite panels of the second fireproof panel assembly has a thickness of h2, 9.5 mm ≤ h2 ≤ 12 mm.
18. The immersed tube tunnel joint fireproof structure with a linear moving mechanism according to claim 1, wherein the first connecting portion and the second connecting portion are respectively protruded from adjacent end faces of the first pipe and the second pipe. The waterproof belt assembly connects the first connecting portion and the second connecting portion, the waterproof belt assembly, the first connecting portion, the second connecting portion, the end surface of the first duct and the end surface of the second duct, and the first fireproof board The assembly encloses a fireproof space, and the second fireproof panel assembly and the thermal insulation are located within the fireproof space.
19. The immersed tube tunnel joint fireproof structure with a linear moving mechanism according to claim 2, wherein the adjacent end faces of the first pipe and the second pipe respectively protrude with a first connecting section and a second connecting section, The waterproof belt assembly connects the first connecting portion and the second connecting portion, the waterproof belt assembly, the first connecting portion, the second connecting portion, the end surface of the first duct and the end surface of the second duct, and the first fireproof board The assembly encloses a fireproof space, and the second fireproof panel assembly and the thermal insulation are located within the fireproof space.
20. The immersed tube tunnel joint fireproof structure with a linear moving mechanism according to claim 3, wherein the adjacent end faces of the first pipe and the second pipe respectively protrude with a first connecting section and a second connecting section, The waterproof belt assembly connects the first connecting portion and the second connecting portion, the waterproof belt assembly, the first connecting portion, the second connecting portion, the end surface of the first duct and the end surface of the second duct, and the first fireproof board The assembly encloses a fireproof space, and the second fireproof panel assembly and the thermal insulation are located within the fireproof space.