Prefabricated assembly parts for internal lane structure of shield tunnel and assembly construction method thereof

Abstract

The present invention discloses prefabricated assembly parts and an assembly construction method for the internal lane structure of a shield tunnel, including a plurality of prefabricated assembly components, each of which includes a mouth-shaped support member and a lane plate component; each lane plate component includes a lane plate structure, at least two supporting beam structures arranged under the corresponding lane plate structure, and a tooth buckle structure for connecting to the corresponding mouth-shaped support member; each tooth buckle structure is a strip-shaped steel structure extending in the vertical direction; the width of the side of the cross-section of each tooth buckle structure close to the middle position of the mouth-shaped support member is greater than the width of the side connected to the corresponding supporting beam structure; each mouth-shaped support member is provided with grooves matching the corresponding tooth buckle structure on both sides and the upper half of both side surfaces. During construction, all the mouth-shaped support members and lane plate components are installed in sequence. The application of the present invention can reduce the cast-in-place concrete operation and realize the fully prefabricated assembly of the internal structure.

Description

Technical Field

[0001] The present invention relates to the technical field of shield tunnel internal structure construction, in particular to prefabricated assembly parts of a shield tunnel internal lane structure and an assembly construction method thereof. Background Art

[0002] In existing technologies, the internal structure of shield tunnels has gradually evolved from traditional cast-in-place construction to prefabricated construction. However, most so-called fully prefabricated structures still have local wet operations, which does not fully demonstrate the advantages of prefabrication and assembly technology. The main disadvantages of the traditional prefabrication and assembly process commonly used in the industry are:

[0003] 1. The curved plates and corbels need to be cast in place. The construction of the curved plates and corbels requires complicated formwork and slow construction speed.

[0004] 2. There are a considerable number of embedded steel bars in the corbels and curved plates, which not only reduces work efficiency but also causes certain damage to the segment structure;

[0005] 3. Wet operations not only affect construction efficiency, but also generate dust and solid waste during material transportation, affecting the tunnel environment.

[0006] 4. Some scholars have tried to use prefabrication technology for curved plates and corbels, but the installation accuracy of the curved sections is high, and it is often difficult to ensure the assembly quality.

[0007] Therefore, how to avoid cast-in-place operations and truly achieve full prefabrication assembly has become a technical problem that technical personnel in this field urgently need to solve. Summary of the Invention

[0008] In view of the above-mentioned defects of the prior art, the present invention provides prefabricated assembly parts of the internal lane structure of a shield tunnel and an assembly construction method thereof, the purpose of which is to completely avoid cast-in-place operations and truly achieve full prefabrication and assembly. In addition, the connection of prefabricated parts is simple, convenient and reliable, and can greatly improve the construction speed.

[0009] To achieve the above-mentioned object, the present invention discloses a prefabricated assembly of a lane structure inside a shield tunnel, comprising a plurality of prefabricated assembly components arranged along the length direction of the shield tunnel, each of the prefabricated assembly components comprising at least one mouth-shaped support member, and at least two lane plate components symmetrically arranged on both sides of the mouth-shaped support member and flush with the upper surface of the mouth-shaped support member;

[0010] Each of the lane plate assemblies comprises a lane plate structure whose upper surface is flush with the upper surface of the mouth-shaped support member, at least two joist structures arranged below the corresponding lane plate structure and perpendicular to the length direction of the shield tunnel, and a toothed buckle structure for connecting with the corresponding mouth-shaped support member;

[0011] Each of the tooth buckle structures is located at the position where the joist structure is provided on the end surface of one end where the corresponding lane plate assembly is connected to the corresponding mouth-shaped support member, and is a strip-shaped steel structure extending in the vertical direction;

[0012] The width of the cross section of each tooth buckle structure at a side close to the middle of the corresponding mouth-shaped support member is greater than the width of the side connected to the corresponding joist structure;

[0013] Grooves matching the corresponding tooth buckle structures are provided on both sides of each mouth-shaped support member and on the upper half of both side surfaces.

[0014] Preferably, the cross section of each of the tooth buckle structures is T-shaped or trapezoidal.

[0015] Preferably, the edges of each of the mouth-shaped support members and each of the lane plate components are provided with a chamfer of 20 mm x 20 mm.

[0016] The present invention also provides a method for assembling prefabricated assembly parts of a shield tunnel internal lane structure, comprising the following steps:

[0017] Step 1: prefabricate all the lane slab components and all the mouth-shaped support members in all prefabricated assembly components;

[0018] Step 2: hoist each of the die-shaped support members and install each of the die-shaped support members in place;

[0019] Step 3, install all the lane plate assemblies; align the tooth buckle structure of each lane plate assembly on the corresponding groove, then lower it vertically, and insert each tooth buckle structure into the corresponding groove in the vertical direction, so that each corresponding lane plate assembly is fixed on the side of the corresponding mouth-shaped support.

[0020] Preferably, in step 2 and step 3, each two adjacent mouth-shaped supports and each two adjacent lane plate assemblies are fixed longitudinally by oblique bolts, and the assembly gaps are adjusted by nitrile rubber gaskets.

[0021] Preferably, after completing the installation of the prefabricated assembly parts, that is, after step 3, continue paving the road, the steps are as follows:

[0022] Step 4: Install the anti-collision stones on both sides; the anti-collision stones on both sides are fixed by the corresponding reserved sleeve bolts of the lane plate, and UHPC high-performance concrete is injected into the sleeve to ensure a firm connection;

[0023] Step 5: providing a reinforced concrete pavement and an asphalt pavement layer between the anti-collision stone paving on both sides;

[0024] Step 6: Complete the internal structure of the shield tunnel and road construction.

[0025] Beneficial effects of the present invention:

[0026] The application of the present invention can reduce the cast-in-place concrete operation, realize the fully prefabricated assembly of the internal structure, improve the working environment, avoid the hoisting of special parts such as arc-shaped parts, and reduce the uncontrollable factors caused by insufficient assembly precision.

[0027] Compared with the prior art, the prefabrication and assembly method of the present invention is more convenient, safer, more reliable, and has higher construction efficiency.

[0028] The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic structural diagram showing the installation of a mouth-shaped support member in one embodiment of the present invention is shown.

[0030] Figure 2 A schematic diagram of the cross-sectional structure of a mouth-shaped support member in one embodiment of the present invention is shown.

[0031] Figure 3 A schematic diagram of the side structure of a mouth-shaped support member in one embodiment of the present invention is shown.

[0032] Figure 4 A schematic diagram of the structure of the inner cavity of a mouth-shaped support member in an embodiment of the present invention when viewed from above is shown.

[0033] Figure 5 A schematic diagram showing the state of hoisting a lane plate assembly in one embodiment of the present invention is shown.

[0034] Figure 6 A schematic diagram showing the state of completing the hoisting of the lane plate assembly in one embodiment of the present invention is shown.

[0035] Figure 7 A schematic structural diagram showing a surface of a lane plate assembly perpendicular to the length direction of a shield tunnel in one embodiment of the present invention is shown.

[0036] Figure 8 A schematic diagram of the structure of a lane plate assembly in a top view according to an embodiment of the present invention is shown.

[0037] Figure 9 A schematic structural diagram of the end surface of a lane plate assembly in one embodiment of the present invention is shown.

[0038] Figure 10 A schematic diagram of the cross-sectional structure of any prefabricated assembly component after assembly is completed in one embodiment of the present invention is shown.

[0039] Figure 11A schematic diagram of the structure in a top view of any prefabricated assembly component after assembly is completed in one embodiment of the present invention is shown.

[0040] Figure 12 A schematic diagram of the side structure of any prefabricated assembly component after assembly is completed in one embodiment of the present invention is shown.

[0041] Figure 13 A schematic diagram of the structure in a top view after multiple prefabricated assembly components are assembled in one embodiment of the present invention is shown. DETAILED DESCRIPTION

[0042] Example

[0043] like Figures 2 to 4 ,as well as Figures 6 to 13 As shown, the prefabricated assembly of the internal lane structure of the shield tunnel includes a plurality of prefabricated assembly components arranged along the length direction of the shield tunnel 1, each prefabricated assembly component includes at least one mouth-shaped support member 2, and at least two lane plate assemblies 3 symmetrically arranged on both sides of the mouth-shaped support member 2 and flush with the upper surface of the mouth-shaped support member 2;

[0044] Each lane plate assembly 3 includes a lane plate structure 4 whose upper surface is flush with the upper surface of the mouth-shaped support member 2, at least two joist structures 5 arranged below the corresponding lane plate structure 4 and perpendicular to the length direction of the shield tunnel 1, and a toothed buckle structure 6 for connecting with the corresponding mouth-shaped support member 2;

[0045] Each tooth buckle structure 6 is located at the position where the joist structure 5 is provided on the end surface of one end where the corresponding lane plate assembly 3 is connected to the corresponding mouth-shaped support member 2, and is a strip-shaped steel structure extending in the vertical direction;

[0046] The width of the cross section of each tooth buckle structure 6 at the side close to the middle of the corresponding mouth-shaped support member 2 is greater than the width of the side connected to the corresponding joist structure 5;

[0047] Grooves 7 matching the corresponding tooth buckle structures 6 are provided on both sides of each die-shaped support member 2 and on the upper half of both side surfaces.

[0048] The principles of the present invention are as follows:

[0049] The present invention forms the internal lane structure of a shield tunnel by assembling multiple prefabricated assembly components including a mouth-shaped support member 2 and lane plate assemblies 3 symmetrically arranged on both sides of the mouth-shaped support member 2, wherein the mouth-shaped support member 2 is provided with a vertically extending groove 7 at the connection portion with the lane plate assembly 3. After the tooth buckle structure 6 of the lane plate assembly 3 is inserted into the groove 7 in the vertical direction, it can form a fixed connection with the mouth-shaped support member 2, thereby completing the assembly of the internal structure of the tunnel.

[0050] In some embodiments, the cross section of each toothed structure 6 is T-shaped or trapezoidal.

[0051] In some embodiments, the edges of each die support member 2 and each lane plate assembly 3 are provided with a chamfer of 20 mm x 20 mm.

[0052] In practical applications, the chamfers provided on the edges of each die support member 2 and each lane plate assembly 3 can avoid chipping during the installation process.

[0053] like Figures 1 to 13 As shown, the present invention also provides a method for assembling prefabricated assembly parts of a shield tunnel internal lane structure, comprising the following steps:

[0054] Step 1: prefabricate all lane slab components 3 and all mouth-shaped support members 2 in all prefabricated assembly components;

[0055] Step 2: hoist each die support member 2 and install each die support member 2 in place;

[0056] Step 3, install all lane plate assemblies 3; align the tooth buckle structure 6 of each lane plate assembly 3 on the corresponding groove 7, then lower it in the vertical direction, and insert each tooth buckle structure 6 into the corresponding groove 7 in the vertical direction, so that each corresponding lane plate assembly 3 is fixed on the side of the corresponding mouth-shaped support 2.

[0057] In some embodiments, in steps 2 and 3, every two adjacent mouth-shaped support members 2 and every two adjacent lane plate assemblies 3 are fixed longitudinally by oblique bolts, and the assembly gaps are adjusted by nitrile rubber gaskets.

[0058] In actual application, the lane plate assembly 3 and the mouth-shaped support member 2 are connected longitudinally by oblique bolts to eliminate possible assembly errors, and nitrile rubber sheets are used to adjust the gap to achieve a better assembly effect.

[0059] In some embodiments, after the installation of the prefabricated assembly parts is completed, that is, after step 3, the road pavement 8 is continued, and the steps are as follows:

[0060] Step 4: Install the anti-collision stones on both sides. The anti-collision stones on both sides are fixed with the corresponding reserved sleeve bolts of the lane plate 4. UHPC high-performance concrete is injected into the sleeve to ensure a firm connection.

[0061] Step 5: construct reinforced concrete pavement and asphalt pavement layers between the anti-collision stone paving on both sides;

[0062] Step 6: Complete the internal structure and road construction of shield tunnel 1.

[0063] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art through logical analysis, reasoning, or limited experimentation based on the concepts of the present invention and the prior art should be within the scope of protection defined by the claims.

Claims

1. A prefabricated assembly of a lane structure inside a shield tunnel, comprising a plurality of prefabricated assembly components arranged along the length direction of the shield tunnel (1); characterized in that: Each of the prefabricated assembly components comprises at least one mouth-shaped support member (2), and at least two lane plate components (3) symmetrically arranged on both sides of the mouth-shaped support member (2) and flush with the upper surface of the mouth-shaped support member (2); Each of the lane plate assemblies (3) comprises a lane plate structure (4) whose upper surface is flush with the upper surface of the mouth-shaped support member (2), at least two joist structures (5) arranged below the corresponding lane plate structure (4) and perpendicular to the longitudinal direction of the shield tunnel (1), and a toothed buckle structure (6) for connecting with the corresponding mouth-shaped support member (2); Each of the toothed buckle structures (6) is located at a position where the support beam structure (5) is provided on the end surface of one end where the corresponding lane plate assembly (3) is connected to the corresponding mouth-shaped support member (2), and is a strip-shaped steel structure extending in the vertical direction; The width of the cross section of each tooth buckle structure (6) at the side close to the middle position of the corresponding mouth-shaped support member (2) is greater than the width of the side connected to the corresponding support beam structure (5); Grooves (7) matching the corresponding tooth buckle structures (6) are provided on both sides of each of the mouth-shaped support members (2) and on the upper halves of both side surfaces.

2. The prefabricated assembly of the internal lane structure of a shield tunnel according to claim 1 is characterized in that: The cross section of each of the tooth buckle structures (6) is T-shaped or trapezoidal.

3. The prefabricated assembly of the internal lane structure of a shield tunnel according to claim 1 is characterized in that: The edges of each of the mouth-shaped support members (2) and each of the lane plate components (3) are provided with chamfers of 20 mm x 20 mm.

4. The method for assembling prefabricated assembly parts of a shield tunnel internal lane structure according to claim 1, characterized in that: The steps include: Step 1: prefabricate all the lane plate components (3) and all the mouth-shaped support members (2) in all prefabricated assembly components; Step 2, hoisting each of the mouth-shaped support members (2), and installing each of the mouth-shaped support members (2) in place; Step 3, install all the lane plate assemblies (3); align the tooth buckle structure (6) of each lane plate assembly (3) on the corresponding groove (7), then lower it in the vertical direction, and insert each tooth buckle structure (6) into the corresponding groove (7) in the vertical direction, so that each corresponding lane plate assembly (3) is fixed on the side of the corresponding mouth-shaped support member (2).

5. The method for assembling prefabricated assembly parts of the internal lane structure of a shield tunnel according to claim 4, characterized in that: In steps 2 and 3, each two adjacent mouth-shaped supports (2) and each two adjacent lane plate assemblies (3) are fixed longitudinally by oblique bolts, and the assembly gaps are adjusted by nitrile rubber gaskets.

6. The method for assembling prefabricated assembly parts of the internal lane structure of a shield tunnel according to claim 4, characterized in that: After the installation of the prefabricated components is completed, i.e. after step 3, the road pavement (8) is continued, and the steps are as follows: Step 4, installing the anti-collision stones on both sides; the anti-collision stones on both sides are fixed by the corresponding reserved sleeve bolts of the lane plate (4), and UHPC high-performance concrete is injected into the sleeve to ensure a firm connection; Step 5: providing a reinforced concrete pavement and an asphalt pavement layer between the anti-collision stone paving on both sides; Step 6: Complete the internal structure and road construction of the shield tunnel (1).

Images