A shield segment cooperative transportation system and construction method

Abstract

The application provides a shield segment cooperative transportation system and a construction method, relates to the technical field of shields, and can calculate the optimal path points of a first gantry crane, a second gantry crane and a transmission structure, moves the segments through the transmission structure, has the advantages of not occupying a large construction site and avoiding the risk of falling from a high altitude, cooperates with the high moving speed of the transmission structure, and greatly improves the transportation efficiency of the segments through the path provided by the shield segment cooperative transportation system.

Description

Technical Field

[0001] This invention relates to the field of tunnel boring machine (TBM) technology, and in particular to a TBM segment collaborative transportation system and construction method. Background Technology

[0002] Tunnel construction using shield tunneling requires prefabricated tunnel lining and segment assembly. The efficiency of segment assembly directly affects the construction speed of the shield tunnel. Since shield tunneling typically involves transporting segments from the shaft, and due to limited construction space, gantry cranes are often used for segment transport. However, gantry cranes move segments above the construction site, posing a risk of falling from height. Using manual segment transport alone is inefficient and occupies a large amount of construction space. Therefore, a shield tunnel segment collaborative transportation system and construction method are needed. Summary of the Invention

[0003] The purpose of this invention is to provide a shield tunnel segment collaborative transportation system and construction method, which aims to solve the existing problems in segment transportation.

[0004] The embodiments of the present invention are implemented as follows:

[0005] One aspect of this invention provides a shield tunnel segment collaborative transportation system, comprising: a first gantry crane, a second gantry crane, a transmission structure, and tunnel segments. The first and second gantry cranes are disposed on both sides of the transmission structure. The first and second gantry cranes and the transmission structure are all used for transporting tunnel segments. The tunnel segments are divided into groups A, B, and C. Here, L is defined as the tunnel segment transportation distance, V0 is defined as the transportation speed of the first and second gantry cranes, V1 is the transmission speed of the transmission structure, E is the starting point of the transportation route, F is the ending point of the transportation route, M1, M2, and M3 are three points defined along the transportation route, and t1, t2, and t3 are the three time segments from point E to point F. The formula for the distance from point M to point E is:

[0006] The distance from point M1 to point E is:

[0007] The distance from point M2 to point E is:

[0008] The distance from point M3 to point E is:

[0009] Optionally, the transport distances of segments in groups A, B, and C can be obtained:

[0010] The distance of the A group of tunnel segments is: V1t1 + V0(t2 + t3) = L;

[0011] The distance of segment B is: V0(t1+t2)+V1t3=L

[0012] The distance of segment C is: V1(t1+t2+t2)=L+2((V1-V0)t1-V0t2).

[0013] Optionally, t1, t2, and t3 are calculated using the transport distances of segments from groups A, B, and C. The

[0014] Optionally, the transmission structure includes a guide rail and a rope winding device. A transport frame is slidably connected to the surface of the guide rail, a wire rope is wound around the surface of the rope winding device, a fixed wheel is fixedly connected to the surface of the guide rail, and a movable wheel is fixedly connected to the surface of the transport frame.

[0015] Optionally, the rope winding device is driven by a motor, and the rope winding device is in two groups and is diagonally distributed on both sides of the guide rail, with the two groups of rope winding devices being started indirectly.

[0016] Optionally, the wire rope is arranged on both sides of the guide rail, and the rope winding device will continuously wind the wire rope on both sides of the wire rope onto the surface of the rope winding device after starting.

[0017] Optionally, the wire rope slides on the surface of the fixed wheel, and the wire rope is guided by the fixed wheel during winding. The movable wheel pulls the transport frame to slide on the surface of the guide rail via the wire rope.

[0018] Another aspect of the present invention provides a method for the coordinated transportation and construction of tunnel segments;

[0019] S1: The transmission structure transports segments A and C, and the first gantry crane transports segments B. They depart simultaneously. After time t1, segments A and C arrive at point M3, and segments B arrive at point M1.

[0020] S2: Connect the A group of segments from the conveying mechanism to the second gantry crane. The second gantry crane continues to transport the A group of segments forward, and the first gantry crane continues to transport the B group of segments forward until the end point F. At the same time, the transmission structure carries the C group of segments back to point E along the original route. After time t2, the C group of segments intersects with the B group of segments at point M2.

[0021] S3: The first gantry crane unloads the B group of tunnel segments onto the conveying mechanism. The transmission structure carrying the B and C groups of tunnel segments, along with the A group of tunnel segments carried by the second gantry crane, arrive at point F simultaneously after time t3.

[0022] The beneficial effects of this invention include: The shield tunnel segment collaborative transportation system and construction method provided by this invention include: a first gantry crane, a second gantry crane, a transmission structure, and tunnel segments. The first and second gantry cranes are arranged on both sides of the transmission mechanism. The first and second gantry cranes and the transmission structure are all used to transport tunnel segments. The tunnel segments include groups A, B, and C. Here, L is defined as the tunnel segment transportation distance, V0 is defined as the transportation speed of the first and second gantry cranes, V1 is the transmission speed of the transmission structure, and E is the starting point of the transportation distance. Point F is the end point of the transportation route, M1, M2, and M3 are three points defined in the transportation route, and t1, t2, and t3 are the three time segments in which all the tunnel segments are transported from point E to point F; the formula for the distance from point M to point E is: The transportation route of the tunnel segments is calculated according to the distance formula L = Vt, where the tunnel segment route of group A is: V1t1 + V0(t2 + t3) = L; the tunnel segment route of group B is: V0(t1 + t2) + V1t3 = L; the tunnel segment route of group C is: V1(t1 + t2 + t2) = L + 2((V1 - V0)t1 - V0t2). The shield tunnel segment collaborative transportation system and construction method of this invention first calculates the movement distance of the three groups of segments, then calculates the time of each operation, thereby deriving the intersection points M1, M2, and M3 of the segments at the starting and ending points. Then, using the real-time method of this invention, the first gantry crane places the A and C groups of segments onto the transmission structure at point E. The first gantry crane then carries the B group of segments and the transmission structure together. After time t1, the A and C groups of segments reach point M3, and the B group of segments reaches point M1. The A group of segments is then hooked from the transmission structure 3 onto the second gantry crane, and the second gantry crane continues... The A group of tunnel segments is transported forward, while the first gantry crane continues to transport the B group of tunnel segments forward to the destination F. At the same time, the conveyor mechanism carries the C group of tunnel segments back to point E along the same route. After time t2, the C group of tunnel segments intersects with the B group of tunnel segments at point M2. The first gantry crane unloads the B group of tunnel segments onto the conveyor mechanism. The conveyor mechanism, carrying the B and C groups of tunnel segments, along with the A group of tunnel segments carried by the second gantry crane, arrive at point F simultaneously after time t3. At this point, the task of transporting the A, B, and C groups of tunnel segments from point E to point F is completed. This method has the advantages of not occupying a large amount of construction space and avoiding the risk of falling from heights, thereby effectively improving the transportation efficiency of tunnel segments. Attached Figure Description

[0023] Figure 1 A process diagram S1 of a shield tunnel segment collaborative transportation system provided in an embodiment of the present invention;

[0024] Figure 2 A process diagram S2 of a shield tunnel segment collaborative transportation system provided in an embodiment of the present invention;

[0025] Figure 3 A process diagram (S3) of a shield tunnel segment collaborative transportation system provided in an embodiment of the present invention;

[0026] Figure 4 This is a top view of the transmission structure provided in an embodiment of the present invention.

[0027] In the diagram: 1. First gantry crane; 2. Second gantry crane; 3. Transmission structure; 31. Guide rail; 32. Transport frame; 33. Rope winding device; 34. Wire rope; 35. Fixed wheel; 36. Movable wheel. Detailed Implementation

[0028] In the shield tunnel segment collaborative transportation system, a transmission structure 3 replaces the first gantry crane 1 and the second gantry crane 2 in transporting tunnel segments, thereby preventing segments from falling off during transportation by the first gantry crane 1 and the second gantry crane 2. The transmission structure 3 moves at a higher speed than the first gantry crane 1 and the second gantry crane 2, enabling rapid transportation of tunnel segments at the construction site. Through the tunnel segment collaborative transportation system, the most efficient way for the first gantry crane 1, the second gantry crane 2, and the transmission structure 3 to cooperate can be calculated, thereby improving the transportation efficiency of tunnel segments at the construction site.

[0029] The transmission structure 3 can transport two sets of tunnel segments simultaneously. During operation, the tunnel segment collaborative transportation system will plan the transportation trajectory of the transmission structure 3 in advance. The transmission structure 3 works with the first gantry crane 1 and the second gantry crane 2 to plan the transportation of tunnel segments. The first gantry crane 1 and the second gantry crane 2 can only transport one set of tunnel segments at a time. Therefore, during the transportation of tunnel segments, the tunnel segment collaborative transportation system calculates the optimal position of the first gantry crane 1, the second gantry crane 2 and the transmission structure 3, which can speed up the transportation efficiency of tunnel segments.

[0030] This invention provides a shield tunnel segment collaborative transportation system, such as... Figure 1 , 2 As shown in Figure 3, calculate the distances from point M1 to point E, from point M2 to point E, and from point M3 to point E.

[0031] S11. Obtain the segment transportation distance as L, define the transportation speed of the first gantry crane 1 and the second gantry crane 2 as V0, the transmission speed of the transmission structure 3 as V1, the starting point of the transportation route as E, and the ending point of the transportation route as F.

[0032] S12. Calculate L according to formula (1).

[0033] The distance of the A group of tunnel segments is: V1t1 + V0(t2 + t3) = L;

[0034] The distance of segment B is: V0(t1+t2)+V1t3=L;

[0035] The distance of segment C is: V1(t1+t2+t2)=L+2((V1-V0)t1-V0t2) (1)

[0036] S12. Calculate t according to equation (2).

[0037]

[0038]

[0039] t1, t2, and t3 represent three time segments for transporting segments A, B, and C, respectively, and their cumulative time is the total duration of transporting the three segments.

[0040] Then, the specific locations of M1, M2, and M3 at the construction site are calculated according to formulas (1) and (2) above.

[0041] S13 calculates M1, M2 and M3 according to equation (3).

[0042] The distance from point M1 to point E is:

[0043] The distance from point M2 to point E is:

[0044] The distance from point M3 to point E is:

[0045] It should be noted that the input of measurement data parameters for the shield tunnel segment collaborative transportation system is derived from formula (1) to form formula (2). Then, formula (1) and formula (2) are used to calculate a very important part of the measurement, including the segment transportation distance L, the transportation speed of the first gantry crane 1 and the second gantry crane 2 V0, and the transmission speed of the transmission structure 3 V1. It also includes the time for the segment to be loaded from the first gantry crane 1 to the transmission structure 3, the time for the segment to be loaded from the second gantry crane 2 to the transmission structure 3, the time for the segment to be unloaded from the first gantry crane 1, and the time for the segment to be unloaded from the second gantry crane 2, so as to ensure that the connection point between the first gantry crane 1, the second gantry crane 2 and the transmission structure 3 can be more accurate.

[0046] This invention provides a shield tunnel segment collaborative transportation system, comprising: a first gantry crane 1, a second gantry crane 2, a transmission structure 3, and tunnel segments. The first gantry crane 1 and the second gantry crane 2 are located on both sides of the transmission structure 3. All three are used to transport tunnel segments, which are divided into groups A, B, and C. Here, L is defined as the segment transportation distance, V0 as the transportation speed of the first and second gantry cranes, V1 as the transmission speed of the transmission structure, E as the starting point of the transportation route, F as the ending point of the transportation route, M1, M2, and M3 as three points along the transportation route, and t1, t2, and t3 as three time segments representing the total transportation time from point E to point F. The distance from point M to point E is calculated using the formula L = Vt. The transportation distance for group A is: V1t1 + V0(t2 + t3) = ... L; The distance for segment B is: V0(t1+t2)+V1t3=L; The distance for segment C is: V1(t1+t2+t2)=L+2((V1-V0)t1-V0t2). The transportation distance for the segments is calculated using the formula L=Vt, where the distance for segment A is: V1t1+V0(t2+t3=L; the distance for segment B is: V0(t1+t2)+V1t3=L; the distance for segment C is: V1(t1+t2+t2)=L+2((V1-V0)t1-V0t2), and also includes a transmission structure 3. The transmission structure 3 includes a guide rail 31 and a rope winding device 33. A transport frame 32 is slidably connected to the surface of the guide rail 31. A wire rope 34 is wound and connected to the surface of the rope winding device 33. A fixed wheel 35 is fixedly connected to the surface of the guide rail 31. A movable wheel 36 is fixedly connected to the surface of the transport frame 32.

[0047] Optionally, the rope winding device 33 is driven by a motor. The rope winding device 33 is in two sets and is diagonally distributed on both sides of the guide rail 31. The two sets of rope winding devices 33 are indirectly started.

[0048] After the rope winding device 33 is started, it can pull the transport frame 32 to slide on the guide rail 31. During the sliding process, the transport frame 32 slides to the side of the starting rope winding device 33, so that the transport frame 32 drives the two sets of tunnel segments to move on the construction site. The first gantry crane 1, the second gantry crane 2 and the transmission structure 3 operate in an interleaved manner, avoiding mutual interference between the first gantry crane 1, the second gantry crane 2 and the transmission structure 3.

[0049] Optionally, the wire rope 34 is arranged on both sides of the guide rail 31, and the rope winding device 33 will continuously wind the wire rope 34 on both sides of the wire rope 34 onto the surface of the rope winding device 33 after starting.

[0050] The wire rope 34 slides on the fixed wheel 35 and the movable wheel 36. When the rope winding device 33 is operating on one side of the wire rope 34, the fixed wheel 35 and the movable wheel 36 move closer to each other. When the rope winding device 33 is not operating on one side of the wire rope 34, the fixed wheel 35 and the movable wheel 36 move further apart from each other.

[0051] Optionally, the wire rope 34 slides on the surface of the fixed wheel 35. During the winding process, the wire rope 34 is guided by the fixed wheel 35, and the movable wheel 36 pulls the transport frame 32 to slide on the surface of the guide rail 31 through the wire rope 34.

[0052] The transport frame 32 always carries two sets of tunnel segments on the guide rail 31. The direction of movement of the transport frame 32 will continue to indirectly start the rope winding device 33 according to the direction of tunnel segment transportation. By starting different rope winding devices 33, the transport frame 32 can reciprocate on the guide rail 31, thereby enabling the transmission structure 3 to quickly transfer tunnel segments between the first gantry crane 1 and the second gantry crane 2, so as to improve efficiency.

[0053] A method for collaborative transportation of tunnel segments;

[0054] S1: Transmission structure 3 transports segments A and C, and the first gantry crane 1 transports segments B. They depart simultaneously. After time t1, segments A and C arrive at point M3, and segments B arrive at point M1.

[0055] S2: The A group of tunnel segments is attached from the conveying mechanism to the second gantry crane 2. The second gantry crane 2 continues to transport the A group of tunnel segments forward. The first gantry crane 1 continues to transport the B group of tunnel segments forward until the end point F. At the same time, the transmission structure 3 carries the C group of tunnel segments back to point E along the original route. After time t2, the C group of tunnel segments intersects with the B group of tunnel segments at point M2.

[0056] S3: The first gantry crane 1 unloads the B group of tunnel segments onto the conveying mechanism. The transmission structure 3, carrying the B and C groups of tunnel segments, and the second gantry crane 2, carrying the A group of tunnel segments, arrive at point F simultaneously after time t3.

[0057] In summary, after adding the variable "transmission structure 3," the shield tunnel segment collaborative transportation system, when transporting three groups of segments (group A, group B, and group C), calculates the optimal turnaround points M1, M2, and M3 between points E and F by measuring the speeds of the first gantry crane 1, the second gantry crane 2, and the transmission structure 3, as well as the segment transportation mileage. Figure 1 , 2 As shown in Figure 3, the shield tunnel segment collaborative transportation construction method, combined with the optimal route calculated by the shield tunnel segment collaborative transportation system, improves the efficiency of segment transportation at the transportation site.

[0058] Working principle: First, the conveying speed of the first gantry crane 1 and the second gantry crane 2 is measured as V0, the transmission speed of the transmission structure 3 is measured as V1, and the starting points are E and F. At this time, the distance formula (2) of the tunnel segment is derived by formula (1). Then, by formula (1) and formula (2), the specific positions of M1, M2 and M3 to point E are calculated, so as to accurately control the travel distance of the first gantry crane 1, the second gantry crane 2 and the transmission structure 3. After the control data is sent to the first gantry crane 1, the second gantry crane 2 and the transmission structure 3, the transportation of the tunnel segment begins. The first gantry crane 1 places the A group and C group tunnel segments on the transmission structure 3 at point E. The first gantry crane 1 then carries the B group tunnel segment and the transmission structure 3. Structure 3 starts together. After time t1, segments A and C reach point M3, and segments B reach point M1. Segments A are then hooked from transmission structure 3 onto the second gantry crane 2. The second gantry crane 2 continues to transport segments A forward, while the first gantry crane 1 continues to transport segments B forward to the destination F. At the same time, the conveyor mechanism carries segments C back to point E. After time t2, segments C and B meet at point M2. The first gantry crane unloads segments B onto the conveyor mechanism. The conveyor mechanism, carrying segments B and C, and segments A carried by the second gantry crane, arrive at point F simultaneously after time t3. At this point, the task of transporting segments A, B, and C from point E to point F is completed.

Claims

1. A construction method for a shield tunnel segment collaborative transportation system, characterized in that, The shield tunnel segment collaborative transportation system includes: a first gantry crane, a second gantry crane, a transmission structure, and tunnel segments. The first and second gantry cranes are located on both sides of the transmission structure. All three gantry cranes and the transmission structure are used to transport tunnel segments. The tunnel segments are divided into groups A, B, and C. Here, L is defined as the tunnel segment transportation distance, V0 as the transportation speed of the first and second gantry cranes, V1 as the transmission speed of the transmission structure, E as the starting point of the transportation route, F as the ending point of the transportation route, M1, M2, and M3 as three points defined along the transportation route, and t1, t2, and t3 as three time segments representing the total transportation time from point E to point F. The formula for the distance from point M to point E is: The distance from point M1 to point E is: L1 = ; The distance from point M2 to point E is: L2 = + ; The distance from point M3 to point E is: L3 = ; The construction method of the shield tunnel segment collaborative transportation system includes: S1: The transmission structure transports segments A and C, and the first gantry crane transports segments B. They depart simultaneously. After time t1, segments A and C arrive at point M3, and segments B arrive at point M1. S2: Connect the A group of segments from the conveying mechanism to the second gantry crane. The second gantry crane continues to transport the A group of segments forward, and the first gantry crane continues to transport the B group of segments forward until the end point F. At the same time, the transmission structure carries the C group of segments back to point E along the original route. After time t2, the C group of segments intersects with the B group of segments at point M2. S3: The first gantry crane unloads the B group of tunnel segments onto the conveying mechanism. The transmission structure carrying the B and C groups of tunnel segments, along with the A group of tunnel segments carried by the second gantry crane, arrive at point F simultaneously after time t3.

2. The construction method of the shield tunnel segment collaborative transportation system as described in claim 1, characterized in that, Obtain the transport distances for tunnel segments in groups A, B, and C: The distance of segment A is: V1t1 + V0(t2 + t3) = L; The distance of segment B is: V0(t1+t2)+V1t3=L; The distance of segment C is: V1(t1+t2+t2)=L+2((V1-V0)t1-V0t2).

3. The construction method of the shield tunnel segment collaborative transportation system as described in claim 2, characterized in that, The transport distances of segments A, B, and C are used to calculate t1, t2, and t3, where t2 = The t1=t3= .

4. The construction method of the shield tunnel segment collaborative transportation system as described in claim 1, characterized in that, The transmission structure includes a guide rail and a rope winding device. A transport frame is slidably connected to the surface of the guide rail, a steel wire rope is wound around the surface of the rope winding device, a fixed wheel is fixedly connected to the surface of the guide rail, and a movable wheel is fixedly connected to the surface of the transport frame.

5. The construction method of the shield tunnel segment collaborative transportation system as described in claim 4, characterized in that, The rope winding device is driven by a motor. The rope winding device consists of two sets, which are diagonally distributed on both sides of the guide rail. The two sets of rope winding devices are started indirectly.

6. The construction method of the shield tunnel segment collaborative transportation system as described in claim 5, characterized in that, The steel wire rope is set on both sides of the guide rail, and the rope winding device will continuously wind the steel wire rope on both sides of the steel wire rope onto the surface of the rope winding device after it is started.

7. The construction method of a shield tunnel segment collaborative transportation system as described in claim 6, characterized in that, The wire rope slides on the surface of the fixed wheel. During the winding process, the wire rope is guided by the fixed wheel. The movable wheel pulls the transport frame to slide on the surface of the guide rail through the wire rope.

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