Laminated immersed tube tunnel structure

Abstract

The present invention relates to tunnel and underground engineering technology, in particular to a laminated immersed tube tunnel structure, which can reduce the requirements for the strength and rigidity of the immersed tube tunnel foundation and improve the overall stability. The structure comprises: a main body extending longitudinally, wherein a horizontal middle plate and a vertical middle wall extending longitudinally and perpendicularly intersecting form mutually independent upper left, lower left, upper right and lower right lane chambers extending longitudinally; upper and lower escape and rescue channel chambers, which are arranged in the middle wall and extending longitudinally, are located between the left and right lane chambers, and are connected to / isolated from the left and right lane chambers respectively by fire doors; upper and lower air duct chambers, which are arranged in the middle wall and extending longitudinally, are located between the left and right lane chambers, and are located above the upper and lower escape and rescue channel chambers; and an anti-anchor layer, which is arranged on the top of the main body.

Description

Technical Field

[0001] The present invention relates to tunnel and underground engineering technology, in particular to a laminated immersed tube tunnel structure. Background Art

[0002] At present, the immersed tube tunnels used at home and abroad are all single-layer immersed tube tunnels. In order to meet the huge traffic volume requirements, two-way 6-lane or 8-lane immersed tube tunnels have appeared one after another, making the width of the immersed tube tunnels larger and larger. The width-to-height ratio of the immersed tube tunnel has reached more than 4:1. This not only puts higher requirements on the stiffness and foundation strength of the immersed tube tunnel, but also the traditional construction method will cause huge engineering waste. Summary of the Invention

[0003] The embodiments of the present invention provide a laminated immersed tube tunnel structure, which can reduce the requirements on the foundation strength and rigidity of the immersed tube tunnel and improve the overall stability.

[0004] According to one aspect of the present invention, there is provided a laminated immersed tube tunnel structure, comprising:

[0005] A main body extending in the longitudinal direction, wherein the interior of the main body forms mutually independent upper left, lower left, upper right and lower right lane compartments extending in the longitudinal direction by means of a horizontal middle plate and a vertical middle wall extending in the longitudinal direction and vertically intersecting with each other;

[0006] The middle plate extends between the upper left and lower left lane compartments and between the upper right and lower right lane compartments;

[0007] The middle wall extends between the upper left and upper right lane compartments and between the lower left and lower right lane compartments;

[0008] An upper escape and rescue passage compartment is provided in the middle wall and extends longitudinally, is located between the upper left and upper right lane compartments, and is connected to / isolated from the upper left and upper right lane compartments respectively through fire doors;

[0009] a lower escape and rescue passage compartment, which is arranged in the middle wall and extends longitudinally, is located between the lower left and lower right lane compartments, and is connected to / isolated from the lower left and lower right lane compartments respectively through fire doors;

[0010] An upper air duct compartment is provided in the middle wall and extends longitudinally, is located between the upper left and upper right lane compartments, and is located above the upper escape and rescue passage compartment;

[0011] A lower air duct compartment is provided in the middle wall and extends longitudinally, is located between the lower left and lower right lane compartments, and is located above the lower escape and rescue passage compartment;

[0012] An anti-anchor layer is arranged on the top of the main body.

[0013] Preferably, in any embodiment, it includes:

[0014] A plurality of friction ribs are provided on the left and right outer side surfaces of the main body and extend in the longitudinal direction.

[0015] Preferably, in any embodiment, it includes:

[0016] A plurality of grouting bottom ribs are arranged on the bottom outer side surface of the main body and extend in the longitudinal direction.

[0017] Preferably, in any embodiment, it includes:

[0018] The top protective structure is arranged at the left and right corner edges of the top of the main body and extends in the longitudinal direction.

[0019] Preferably, in any embodiment, it includes:

[0020] The bottom protection structure is arranged at the left and right corner edges of the bottom of the main body and extends in the longitudinal direction.

[0021] Preferably, in any embodiment,

[0022] The bottom protection structure includes: a horizontal wing fixed to the bottom of the main body; and a movable wing pivotally mounted to the side of the main body, the movable wing being able to rotate between a vertical position close to the side of the main body and a horizontal position open relative to the side of the main body.

[0023] The laminated immersed tube tunnel structure provided by the embodiment of the present invention can reduce the requirements for the foundation strength and rigidity of the immersed tube tunnel and improve the overall stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be discussed below. Obviously, the technical solutions described in conjunction with the drawings are only some embodiments of the present invention. For ordinary technicians in this field, other embodiments and their drawings can be obtained based on the embodiments shown in these drawings without paying any creative work.

[0025] Figure 1 Schematic diagram of a laminated immersed tube tunnel structure according to an embodiment of the present invention. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions of various embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments described in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] The embodiments of the present invention provide a laminated immersed tube tunnel structure, which can reduce the requirements on the foundation strength and rigidity of the immersed tube tunnel and improve the overall stability.

[0028] According to one aspect of the present invention, there is provided a laminated immersed tube tunnel structure, comprising:

[0029] A main body extending in the longitudinal direction, wherein the interior of the main body forms mutually independent upper left, lower left, upper right and lower right lane compartments extending in the longitudinal direction by means of a horizontal middle plate and a vertical middle wall extending in the longitudinal direction and vertically intersecting with each other;

[0030] The middle plate extends between the upper left and lower left lane compartments and between the upper right and lower right lane compartments;

[0031] The middle wall extends between the upper left and upper right lane compartments and between the lower left and lower right lane compartments;

[0032] An upper escape and rescue passage compartment is provided in the middle wall and extends longitudinally, is located between the upper left and upper right lane compartments, and is connected to / isolated from the upper left and upper right lane compartments respectively through fire doors;

[0033] a lower escape and rescue passage compartment, which is arranged in the middle wall and extends longitudinally, is located between the lower left and lower right lane compartments, and is connected to / isolated from the lower left and lower right lane compartments respectively through fire doors;

[0034] An upper air duct compartment is provided in the middle wall and extends longitudinally, is located between the upper left and upper right lane compartments, and is located above the upper escape and rescue passage compartment;

[0035] A lower air duct compartment is provided in the middle wall and extends longitudinally, is located between the lower left and lower right lane compartments, and is located above the lower escape and rescue passage compartment;

[0036] An anti-anchor layer is arranged on the top of the main body.

[0037] In this way, the interior space of the tunnel structure is divided into four lane compartments (upper left, lower left, upper right, and lower right lane compartments) in a roughly field-shaped manner by the horizontal middle plate and the vertical middle wall, and a immersed tube tunnel structure is formed by three-dimensional stacking, that is, a double-layer double-compartment 2×2 three-dimensional structure. Compared with the single-layer flat 1×2 structure of the existing technology (such as Figure 1Compared to the conventional immersed tube tunnel (shown in Figure 2), while maintaining the same traffic space, the width-to-height ratio of the immersed tube tunnel can be significantly reduced from 4:1 to 1.3:1. This not only improves the overall stiffness and strength of the immersed tube tunnel, but also reduces the span of the single-chamber structure, thereby reducing structural thickness and reinforcement, thereby lowering construction costs. Therefore, the laminated immersed tube tunnel structure provided by the present invention not only optimizes the stress state but also reduces construction costs.

[0038] The air duct compartment and the escape and rescue passage compartment are located within the center wall, between the adjacent left and right lane compartments. The air duct compartment can house various cables and pipes, while the escape and rescue passage compartment can be connected to or separated from the corresponding left and right lane compartments via fire doors, facilitating fire zoning.

[0039] It can be seen that the laminated immersed tube tunnel structure provided by the embodiment of the present invention can reduce the requirements for the foundation strength and rigidity of the immersed tube tunnel and improve the overall stability.

[0040] Optionally, in one embodiment, as needed, lanes for different vehicle types or speeds can be arranged in the upper left, lower left, upper right, and lower right lane compartments.

[0041] Preferably, any embodiment includes a plurality of friction ridges disposed on the left and right outer surfaces of the main body and extending longitudinally. This effectively prevents collisions during the prefabrication, transportation, and placement of the immersed tunnel. Furthermore, it increases the frictional resistance between the immersed tunnel and the surrounding rock and soil, improving adhesion between the immersed tunnel and the surrounding soil and preventing vertical movement of the immersed tunnel.

[0042] Optionally, in one embodiment, the protrusion height of the friction ridge is 10 cm.

[0043] Preferably, any embodiment includes a plurality of grouting bottom ribs disposed on the bottom outer surface of the main body and extending longitudinally. This effectively prevents collisions during the prefabrication, transportation, and placement of the immersed tunnel, while also providing grouting spaces for the bottom grouting, improving the bond between the immersed tunnel and the underlying rock and soil, and preventing horizontal movement of the immersed tunnel.

[0044] Optionally, in one embodiment, the raised height of the grouting bottom edge is 10 cm.

[0045] Preferably, any embodiment includes: a top protective structure provided at the left and right corner edges of the top of the main body and extending longitudinally, so as to prevent the corners (top corners) from being damaged during the prefabrication, transportation, and sinking of the immersed tube tunnel.

[0046] Optionally, in one embodiment, the top guard structure includes a guard block.

[0047] Optionally, in one embodiment, the top protective structure is made of rubber. Typically, the top protective structure only serves as a protective layer during transportation and installation. Once the immersed tunnel is in place, sand is backfilled to embed the immersed tunnel within the surrounding rock to prevent collisions. At this point, the top protective structure ceases to function.

[0048] Optionally, in one embodiment, the top protective structure is bonded to the main body of the laminated immersed tube tunnel structure.

[0049] Optionally, in one embodiment, the thickness of the top protective structure is 20 cm.

[0050] Preferably, any embodiment includes: a bottom protection structure provided at the left and right corner edges of the bottom of the main body and extending longitudinally, so as to prevent the corners (bottom corners) from being damaged during the prefabrication, transportation, and sinking of the immersed tube tunnel.

[0051] Preferably, in any embodiment, the bottom protection structure includes: horizontal wings fixed to the bottom of the main body; and movable wings pivotally mounted to the sides of the main body, the movable wings being capable of rotating between a vertical position close to the sides of the main body and a horizontal position open relative to the sides of the main body. In this way, during the prefabrication, transportation, and sinking of the immersed tube tunnel, the movable wings are in a vertically closed position close to the sides of the main body, and together with the horizontal wings, they protect the bottom corners of the immersed tube tunnel and prevent collisions. After the immersed tube tunnel is installed, the movable wings can be opened laterally (detached from the sides of the main body) until they are rotated to a horizontal position. Thereafter, backfilling of the rock and soil on both sides is performed to compact the horizontally opened movable wings, which can help improve the anti-buoyancy of the immersed tube tunnel.

[0052] Optionally, in one embodiment, the anti-anchor layer has a thickness of 10 to 20 cm.

[0053] Optionally, in one embodiment, the anti-anchor layer is formed by C20 reinforced concrete.

[0054] Optionally, in one embodiment, some or all of the lane compartments (the upper left, lower left, upper right, and lower right lane compartments) have a substantially rectangular cross-section.

[0055] Optionally, in one embodiment, the main body of the laminated immersed tube tunnel structure has a substantially rectangular cross-section.

[0056] Optionally, in one embodiment, the main body of the laminated immersed tube tunnel structure has a cross-sectional shape with chamfered corners.

[0057] Optionally, in one embodiment, the laminated immersed tube tunnel structure has a three-layer or more structure.

[0058] Optionally, in one embodiment, at least one layer of the laminated immersed tube tunnel structure has three or more lane compartments.

[0059] Optionally, in one embodiment, an up-down passage is provided between the upper and lower lane chambers (e.g., between the upper left and lower left lane chambers, or between the upper right and lower right lane chambers). In this way, in an emergency (e.g., a fire), people in distress can evacuate to the up-down passages for safety, and can even be further evacuated to the safer lane chambers on the upper or lower levels via the up-down passages, thereby effectively improving the disaster prevention and evacuation capabilities of the laminated immersed tube tunnel structure.

[0060] Optionally, in one embodiment, the upper and lower passages include retractable ladders. Thus, under normal operating conditions, the retractable ladders can be retracted (e.g., raised), and the evacuation hatch at the end of the upper and lower passages closed. When a fire occurs in a lane compartment, the evacuation hatch opens and the retractable ladders deploy, allowing people in distress to evacuate (e.g., upward or downward) to a safe location (e.g., an upper or lower safe lane compartment) via the ladders.

[0061] Alternatively, in one embodiment, the up-and-down passage comprises a vertical ladder fixedly connected between the upper lane compartment and the lower lane compartment. In this way, through this simple structure, higher safety can be provided in an emergency.

[0062] Optionally, in one embodiment, a plurality of upper and lower channels are provided along the longitudinal extension direction.

[0063] Optionally, in one embodiment, an up and down channel is provided every 100-200 meters along the longitudinal extension direction.

[0064] Optionally, in one embodiment, the upper and lower channels are at least partially disposed within the mid-plate.

[0065] Optionally, in one embodiment, the upper and lower channels are at least partially disposed within the middle wall.

[0066] Figure 1 Schematic diagram of a laminated immersed tube tunnel structure according to an embodiment of the present invention.

[0067] exist Figure 1 In the embodiment shown, a laminated immersed tube tunnel structure can be seen, comprising:

[0068] Along the longitudinal direction (in Figure 1 The main body extends in a direction perpendicular to the paper, and the interior thereof forms mutually independent upper left, lower left, upper right, and lower right lane compartments 310, 330, 320, and 340 extending in the longitudinal direction, by means of a horizontal middle plate 110 and a vertical middle wall 220 extending in the longitudinal direction and perpendicularly intersecting therewith;

[0069] The middle plate 110 extends between the upper left and lower left lane chambers 310 and 330 and between the upper right and lower right lane chambers 320 and 340;

[0070] The middle wall 220 extends between the upper left and upper right lane chambers 310 and 320 and between the lower left and lower right lane chambers 330 and 340;

[0071] An upper escape and rescue passage compartment 510 is disposed within the middle wall 220 and extends longitudinally between the upper left and upper right lane compartments 310 and 320 and is connected to / isolated from the upper left and upper right lane compartments via fire doors, respectively;

[0072] A lower escape and rescue passage compartment 520 is disposed within the middle wall 220 and extends longitudinally between the lower left and lower right lane compartments 330 and 340 and is connected to / isolated from the lower left and lower right lane compartments via fire doors, respectively;

[0073] An upper air duct compartment 610 is disposed within the middle wall 220 and extends longitudinally, is located between the upper left and upper right lane compartments 310 and 320, and is located above the upper escape and rescue passage compartment 510;

[0074] A lower air duct compartment 620 is disposed within the middle wall 220 and extends longitudinally between the lower left and lower right lane compartments 330 and 340 and above the lower escape and rescue passage compartment 520;

[0075] An anti-anchor layer is arranged on the top of the main body.

[0076] exist Figure 1 The illustrated embodiment also shows a plurality of friction ribs 710 , which are disposed on the left and right outer side surfaces of the main body and extend in the longitudinal direction.

[0077] exist Figure 1 The illustrated embodiment also shows a plurality of grouting bottom ribs 720 disposed on the bottom outer side surface of the main body and extending in the longitudinal direction.

[0078] exist Figure 1 The illustrated embodiment further shows a top protective structure 810 , which is disposed at the left and right corner edges of the top of the main body and extends in the longitudinal direction.

[0079] exist Figure 1 The illustrated embodiment further shows a bottom protective structure 820 , which is disposed at the left and right corner edges of the bottom of the main body and extends in the longitudinal direction.

[0080] The laminated immersed tube tunnel structure provided by the embodiments of the present invention can reduce the requirements for foundation strength and rigidity of immersed tube tunnels and improve overall stability. This not only solves the existing problems of stress and deformation control in ultra-wide immersed tube tunnel structures, improving the overall stability of immersed tube tunnels and reducing the requirements for foundation strength and rigidity, but also reduces the structural thickness and reinforcement of immersed tube tunnels, making the immersed tube tunnels lighter and reducing project investment. The laminated immersed tube tunnel structure provided by the present invention has at least one of the following advantages:

[0081] (1) The adoption of a laminated structure significantly reduces the aspect ratio of the immersed tube tunnel, improves the overall stability of the immersed tube tunnel, reduces the requirements for foundation strength and stiffness of the immersed tube tunnel, reduces the structural thickness and reinforcement of the immersed tube tunnel, makes the immersed tube tunnel lighter, and reduces project investment.

[0082] (2) The adoption of a laminated structure significantly reduces the width of the immersed tube, reduces the width of the foundation trench excavation, reduces the uneven settlement of the immersed tube tunnel on the foundation trench, and reduces the cost of foundation trench excavation and foundation reinforcement.

[0083] (3) The laminated structure provides four independent lane compartments, which is beneficial for fire zoning and traffic organization.

[0084] It should be noted that, in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment comprising a series of elements not only includes these elements, but also includes other elements not clearly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of further restrictions, the elements limited by the sentence "comprising a..." do not exclude the presence of other identical factors in the process, method, article or equipment comprising the elements.

[0085] In the description of multiple elements herein, multiple parallel features connected by "and / or" refer to one or more (or one or more) of these parallel features. For example, "a first element and / or a second element" means: one or more of the first element and the second element, that is, only the first element, or only the second element, or the first element and the second element (both exist at the same time).

[0086] The various embodiments provided in the present invention can be combined with each other as needed. For example, the features of any two, three or more embodiments can be combined with each other to form a new embodiment of the present invention. This is also within the scope of protection of the present invention, unless otherwise specified or technically inconsistent and cannot be implemented.

[0087] The above description is merely an exemplary embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A laminated immersed tube tunnel structure, characterized in that: include: A main body extending in the longitudinal direction, wherein the interior of the main body forms mutually independent upper left, lower left, upper right and lower right lane compartments extending in the longitudinal direction by means of a horizontal middle plate and a vertical middle wall extending in the longitudinal direction and vertically intersecting with each other; The middle plate extends between the upper left and lower left lane compartments and between the upper right and lower right lane compartments; The middle wall extends between the upper left and upper right lane compartments and between the lower left and lower right lane compartments; An upper escape and rescue passage compartment is provided in the middle wall and extends longitudinally, is located between the upper left and upper right lane compartments, and is connected to / isolated from the upper left and upper right lane compartments respectively through fire doors; a lower escape and rescue passage compartment, which is arranged in the middle wall and extends longitudinally, is located between the lower left and lower right lane compartments, and is connected to / isolated from the lower left and lower right lane compartments respectively through fire doors; An upper air duct compartment is provided in the middle wall and extends longitudinally, is located between the upper left and upper right lane compartments, and is located above the upper escape and rescue passage compartment; A lower air duct compartment is provided in the middle wall and extends longitudinally, is located between the lower left and lower right lane compartments, and is located above the lower escape and rescue passage compartment; an anti-anchor layer, which is arranged on the top of the main body; a plurality of friction ridges, which are arranged on the left and right outer side surfaces of the main body and extend in the longitudinal direction; a plurality of grouting bottom ribs, which are arranged on the bottom outer side surface of the main body and extend in the longitudinal direction; a top protective structure, which is arranged at the left and right corner edges of the top of the main body and extends in the longitudinal direction; The bottom protection structure is arranged at the left and right corner edges of the bottom of the main body and extends in the longitudinal direction.

2. The laminated immersed tube tunnel structure according to claim 1, characterized in that: The bottom protection structure includes: a horizontal wing fixed to the bottom of the main body; and a movable wing pivotally mounted to the side of the main body, the movable wing being able to rotate between a vertical position close to the side of the main body and a horizontal position open relative to the side of the main body.

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