Modularly-assembled rectangular pipe jacking section mold

Abstract

A modularly-assembled rectangular pipe jacking section mold comprises a bottom mold set, an inner mold set, an outer mold set and an outer guide rail, the inner mold set and the outer mold set are arranged on the bottom mold set, a space used for pouring concrete is formed between the inner mold set and the outer mold set, the inner mold set and the outer mold set are of the same structure, and the outer mold set comprises an outer four-corner component and an outer plane component; the outer four-corner components are spliced into corners of the outer module, the outer plane components are spliced into side faces of the outer module, and the four side faces of the outer module are spliced into the rectangular outer module through the four corners of the outer module. The outer guide rails are perpendicular to the four edges of the bottom die set and extend outwards, and when the outer die set is disassembled, the four side faces of the outer die set slide on the butted outer guide rails to be separated from one another. Modularized assembly can be achieved, transportation, hoisting and on-site direct assembly are convenient, operation is easy and convenient, diameter changing or shape changing of pipe jacking pipe joints can be easily achieved, the pipe jacking pipe joint is suitable for the current situation of complex tunnel construction, and the manufacturing cost can be easily controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe jacking construction, in particular to a modular assembled rectangular pipe jacking section mould. Background Art

[0002] Pipe jacking technology is a trenchless technology used for underground pipeline construction. It uses a pipe jacking machine to dig a tunnel below the surface and pushes the main structure into the ground through a jacking system, eventually forming an underground pipeline system. Its main structure mostly uses reinforced concrete pipe sections, steel pipe sections, fiberglass sand-filled pipe sections, etc., among which reinforced concrete pipe sections are the most widely used.

[0003] With the continuous innovation of pipe jacking technology, the types of pipe segments have gradually evolved from small-section regular rectangles and circles to large-section, special-shaped, and variable-diameter models. The existing cast-in-place reinforced concrete pipe segment technology has gradually been restricted, especially the pipe segment molds. When the cross-section of a pipe jacking segment is large, it is overweight and bulky. Prefabrication in the factory and then transporting the entire piece to the site is no longer practical. Therefore, on-site prefabrication is required. However, transporting oversized mold components to the site is costly, large-section components are difficult to install, strip steel mold components are easily deformed when lifted, and large-sized formwork is difficult to demold. Moreover, steel molds of a single size cannot adapt to the needs of tunnel diameter changes. Variable-diameter tunnels require two or more sets of steel molds, which is expensive, unfavorable for project cost control, and cannot meet the needs of current tunnel construction. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the above-mentioned prior art and provide a modular assembled rectangular jacking pipe segment mold that is convenient for transportation and on-site production and can flexibly meet the requirements of variable diameter, which is suitable for the production of large-section pipe segments.

[0005] The utility model is realized through the following technical solutions:

[0006] A modularly assembled rectangular jacking pipe segment mold, comprising a bottom mold group, an inner mold group, an outer mold group and an outer guide rail, wherein the inner mold group and the outer mold group are arranged on the bottom mold group, and a space for pouring concrete is formed between the inner mold group and the outer mold group, wherein the inner mold group and the outer mold group have the same structure, the inner mold group comprises inner four-corner components and inner plane components, a plurality of the inner four-corner components are connected to each other in the up-down and left-right directions to form the corners of the inner mold group, a plurality of the inner plane components are connected to each other in the up-down and left-right directions to form the sides of the inner mold group, and the four sides of the inner mold group are assembled into a rectangular inner mold group through the four corners of the inner mold group; The outer module includes outer four corner members and outer plane members, and several of the outer four corner members are connected to each other in the up-down and left-right directions to form the corners of the outer module, and several of the outer plane members are connected to each other in the up-down and left-right directions to form the sides of the outer module. The four sides of the outer module are assembled into a rectangular outer module through the four corners of the outer module; several of the outer guide rails are arranged perpendicular to the four sides of the bottom module, one end of the outer guide rail is connected to the bottom module, and the other end extends outward from the bottom module, and the outer guide rail is flush with the bottom end of the outer module. When the outer module is disassembled, its four sides are separated from each other by sliding on the docking outer guide rails.

[0007] The inner and outer molds should be constructed of steel plates. Surfaces in contact with concrete should be polished, and non-contact surfaces should be treated with an anti-corrosion agent. The inner corner members, inner planar members, outer corner members, and outer planar members all have predefined standard sizes. Standard-sized components are designed based on common prefabricated pipe section sizes. The same component type can be designed in multiple sizes and specifications, facilitating selection and recycling.

[0008] Furthermore, it also includes an inner guide rail, several of which are arranged perpendicular to the four sides of the bottom mold group, one end of the inner guide rail is connected to the bottom mold group, and the other end extends toward the center of the bottom mold group, and the inner guide rail is flush with the bottom end of the inner mold group. When the inner mold group is demolded, its four side surfaces are separated from each other by sliding on the docking inner guide rails.

[0009] Furthermore, the bottom mold assembly includes bottom four corner components and bottom side components, and several of the bottom side components are assembled into four sides of the bottom mold assembly. The four sides of the bottom mold assembly are assembled into a ring-shaped rectangular bottom mold assembly through four of the bottom four corner components.

[0010] Furthermore, the bottom edge member is an inverted U-shaped steel plate, a first stiffening rib is provided inside the U-shaped steel plate, and the bottom edge members and the bottom edge members and the bottom four corner members are connected by first bolts or snaps.

[0011] Furthermore, first bolt holes are provided on both sides of the U-shaped U-shaped steel plate of the bottom edge member, and the first bolts connecting the bottom edge members and the bottom edge members and the bottom four corner members are fixed through the corresponding first bolt holes.

[0012] Furthermore, the inner plane member is in the shape of an uncovered rectangular box, the bottom of the uncovered rectangular box is spliced ​​to form the side of the inner module that contacts the concrete, and the two adjacent inner plane members are connected and fixed by bolts, pins or buckles, and the inner plane member and the inner four corner members are connected and fixed by bolts, pins or buckles, which is convenient for assembly and disassembly;

[0013] Or / and, the outer plane member is in the shape of an uncovered rectangular box, the bottom of the uncovered rectangular box is spliced ​​to form the side of the outer module that contacts the concrete, the two upper and lower adjacent or left and right adjacent outer plane members are connected and fixed by bolts, pins or buckles, and the outer plane member and the outer four corner members are connected and fixed by bolts, pins or buckles.

[0014] Furthermore, second bolt holes are provided on the four sides of the uncovered rectangular box-shaped inner planar member, and two inner planar members adjacent to each other vertically or horizontally are bolted together through the second bolt holes thereon;

[0015] Or / and, third bolt holes are provided on four sides of the uncovered rectangular box-shaped outer planar member, and two outer planar members adjacent to each other vertically or horizontally are bolted together through the third bolt holes thereon.

[0016] Furthermore, the two upper and lower adjacent inner planar members are connected with staggered seams, and the inner planar members are provided with second stiffening ribs inside the uncovered rectangular box-shaped inner planar members;

[0017] Or / and, two upper and lower adjacent outer planar members are connected with staggered seams, and a third stiffening rib is provided inside the uncovered rectangular box-shaped outer planar member.

[0018] Furthermore, when the outer four corner components are spliced ​​up and down, the splicing seams are aligned, so that the corners of the outer module have splicing seams that pass through from top to bottom, which facilitates the assembly or separation of the four sides of the outer module.

[0019] Furthermore, it also includes an operating platform, which is arranged inside the inner module and is connected to the inner module. The operating platform is used as an operating platform and also serves as a support for the inner module.

[0020] The pipe segment mold of the present invention is composed of a bottom mold group, an inner mold group, an outer mold group, an inner guide rail, an outer guide rail, a connecting piece, etc., and the bottom mold group, the inner mold group and the outer mold group are connected by assembling a number of steel plate components of standard modular lengths (different modular standards) and node steel plates, which can realize modular assembly, facilitate transportation, hoisting and direct assembly on site, and are easy to operate, avoiding the deformation and other problems that are easy to occur when transporting or hoisting large-section thin components; the corner node components on the bottom mold group, the inner mold group and the outer mold group are separately arranged from the plane components, and the requirements of different corner radians can be met by simply replacing the corner node components. Similarly, it is only necessary to remove or replace a certain number of standard By using standard steel plates and changing the style of node steel plates, the diameter or shape of the top pipe segment can be changed. This is flexible and convenient, and can achieve the purpose of tunnel diameter change. It is suitable for the current complex tunnel construction situation and is beneficial to controlling the cost. The inner / outer plane components are arranged in a uncovered rectangular box shape, and bolt holes are arranged on the four sides of the box, so that the inner / outer plane components can be easily spliced ​​in the left and right directions and the up and down directions, and connected with the inner / outer four corner components. Inner / outer guide rails are arranged at the inner / outer module groups. When the mold is assembled or the pipe segment is demoulded, the side surfaces of the inner / outer module groups can move along the inner / outer guide rails to realize the assembly or separation of the inner / outer modules, which is convenient for implementation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of an embodiment of the present utility model.

[0022] Figure 2 It is a plan view of an embodiment of the present utility model.

[0023] Figure 3 This is a structural diagram of an implementation method of the bottom module in an embodiment of the present utility model.

[0024] Figure 4 This is a structural schematic diagram of the bottom edge component of the bottom mold assembly in an embodiment of the present utility model.

[0025] Figure 5 This is a schematic diagram of the structure in which the bottom edge components of the bottom mold assembly are connected to each other in an embodiment of the present utility model.

[0026] Figure 6 This is another structural schematic diagram of the bottom edge component of the bottom mold assembly in an embodiment of the present utility model.

[0027] Figure 7 This is another structural schematic diagram of the interconnected bottom edge components of the bottom mold assembly in an embodiment of the present utility model.

[0028] Figure 8 This is a side structural diagram of the interconnected bottom edge components of the bottom mold assembly in an embodiment of the present utility model.

[0029] Figure 9This is a structural diagram of another implementation of the bottom module in an embodiment of the present utility model.

[0030] Figure 10 This is a schematic structural diagram of the outer planar component on the inner and outer module in an embodiment of the present utility model.

[0031] Figure 11 This is a schematic structural diagram of the interconnected outer planar components on the outer module in an embodiment of the present utility model.

[0032] Figure 12 This is a schematic structural diagram of the interconnected outer four corner components of the inner and outer modules in an embodiment of the present invention.

[0033] Figure markings: 1-bottom mold group; 2-outer mold group; 3-inner mold group; 4-outer guide rail; 5-inner guide rail; 6-operating platform; 11-bottom edge member; 12-bottom four corner members; 111-first stiffening rib; 112-first bolt hole; 113-lug; 114-first bolt; 21-outer plane member; 22-outer four corner members; 23-joining seam; 211-bottom; 212-third stiffening rib; 213-third bolt hole; 214-third bolt. DETAILED DESCRIPTION

[0034] A modular assembled rectangular pipe jacking segment mold, such as Figure 1 、 Figure 2As shown, it includes a bottom mold group 1, an inner mold group 3, an outer mold group 2, an inner guide rail 5 and an outer guide rail 4, the inner mold group 3 and the outer mold group 2 are arranged on the bottom mold group 1, and a space for pouring concrete is formed between the inner mold group 3 and the outer mold group 2, the inner mold group 3 and the outer mold group 2 have the same structure, the inner mold group 3 includes inner four-corner components and inner plane components (not shown in the figure), a number of the inner four-corner components are connected to each other in the up-down and left-right directions to form the corners of the inner mold group 3, a number of the inner plane components are connected to each other in the up-down and left-right directions to form the sides of the inner mold group 3, and the four sides of the inner mold group 3 are assembled into a rectangular inner mold group 3 through the four corners of the inner mold group 3; the outer mold group 2 includes outer four-corner components 22 and outer plane components 21, a number of the outer four-corner components 22 are connected to each other in the up-down and left-right directions to form the rotation of the outer mold group 2 Corner, several of the outer planar members 21 are connected to each other in the up and down and left and right directions to be assembled into the side faces of the outer module 2, and the four side faces of the outer module 2 are assembled into a rectangular outer module 2 through the four corners of the outer module 2; several of the outer guide rails 4 are arranged perpendicular to the four sides of the bottom module 1, one end of the outer guide rail 4 is connected to the bottom module 1, and the other end extends outward from the bottom module 1, and the outer guide rail 4 is flush with the bottom end of the outer module 2, and when the outer module 2 is demolded, its four side faces are separated from each other by sliding on the docking outer guide rails 4; several of the inner guide rails 5 are arranged perpendicular to the four sides of the bottom module 1, one end of the inner guide rail 5 is connected to the bottom module 1, and the other end extends toward the center of the bottom module 1, and the inner guide rail 5 is flush with the bottom end of the inner module 3, and when the inner module 3 is demolded, its four side faces are separated from each other by sliding on the docking inner guide rails 5. Bottom module 1, inner module 3 and outer module 2 should be made of steel plate components. The contact surfaces with concrete should be ground and polished, and the non-contact surfaces should be treated with anti-corrosion.

[0035] The inner four corner members, inner planar member, outer four corner members 22, and outer planar member 21 all have predefined standard sizes. Standard-sized components are designed based on the common sizes of prefabricated pipe segments. The same type of component can be designed in a variety of sizes and specifications, allowing for convenient selection based on needs. In actual application, the size combination of the prefabricated pipe segments can be determined based on the project's design drawings. Based on this size combination and the prefabrication site conditions, the modular combination of the inner module 3, outer module 2, and bottom module 1 can be designed. A unified modularity (300mm, 600mm, 900mm, etc.) is preferably used, supplemented by special modularity as needed to facilitate replacement and recycling.

[0036] The bottom mold assembly 1 can be a platform protruding from the ground to a certain height so that it can be connected with the inner / outer guide rail 4. As one embodiment, Figure 3 、 Figure 9The bottom mold assembly 1 includes bottom four corner members 12 and bottom side members 11. Several bottom side members 11 are assembled into the four sides of the bottom mold assembly 1. The four sides of the bottom mold assembly 1 are assembled into a ring-shaped rectangular bottom mold assembly 1 through four bottom four corner members 12. Its size is compatible with the size of the outer mold assembly 2 and the inner mold assembly 3. The connection between the bottom mold assembly 1 and the outer mold assembly 2 and the inner mold assembly 3 can be sealed by a sealing strip. Figure 1 The inner guide rail 5 and the outer guide rail 4 can be made of I-beams and fixed to the ground by anchor bolts or the like to prevent movement.

[0037] As one of the implementation methods, Figure 4 、 Figure 6 The bottom edge member 11 is an inverted U-shaped steel plate. A first stiffening rib 111 is provided inside the U-shaped steel plate. It can be welded with a 20mm thick steel plate. The bottom edge member 11 can also be made of U-shaped steel. The top surface of the U-shaped steel plate contacts the concrete and should be polished smooth. The length adopts the standard modulus and the width is determined according to the thickness of the pipe section. The connections between the bottom edge members 11 and between the bottom edge member 11 and the bottom four corner members 12 are connected by bolts or snap-on connections.

[0038] In this embodiment, first bolt holes 112 are provided on both sides of the U-shaped steel plate of the bottom edge member 11. The first bolts 114 connecting the bottom edge members 11 and the bottom edge members 11 and the bottom four corner members 12 are fixed through the corresponding first bolt holes 112, and corresponding bolt holes are also provided on the sides of the bottom four corner members 12.

[0039] There are many ways to connect the two adjacent bottom edge members 11U-shaped steel plates to each other, one of which is as follows: Figures 3 to 5 The U-shaped cross-sections of the U-shaped steel plates are connected end to end in sequence. At both ends of each U-shaped steel plate, a first bolt hole 112 is set at one end, and a lug 113 extends from the other end. The lug 113 can be welded to the end of the U-shaped steel plate without hindering the connection between the two U-shaped steel plates. A first bolt hole 112 is set on the lug 113. When the two U-shaped steel plates are connected, the first bolt hole 112 on the lug 113 is opposite to the first bolt hole 112 on the end head, and then fixed by a first bolt 114.

[0040] As another example, Figures 6 to 9 , the two adjacent bottom edge members 11 are connected by connecting the two side surfaces of the U-shaped steel plates. Specifically, a first bolt hole 112 is provided at the middle position of the two side surfaces of each U-shaped steel plate. The U-shaped side surfaces of the two adjacent U-shaped steel plates are fitted together. At this time, the two U-shaped plates are arranged side by side, and the first bolt holes 112 on the two side surfaces are opposite to each other, and then fixed by the first bolts 114. In this embodiment, the structures of the inner module 3 and the outer module 2 are the same. Take the outer module 2 as an example. Figure 10 、 Figure 11The outer plane member 21 is in the shape of an uncovered rectangular box, and the bottom 211 of the uncovered rectangular box is spliced ​​to form the side of the outer module 2 that contacts the concrete. The connection and fixation between the two adjacent outer plane members 21 above and below and left and right is achieved by one or a combination of bolt connection, pin connection or snap connection, etc. Similarly, the connection and fixation between the outer plane member 21 and the outer four corner members 22 is achieved by one or a combination of bolt connection, pin connection or snap connection, etc.

[0041] In this embodiment, the connection between the outer planar members 21 is achieved by bolt connection. Specifically, third bolt holes 213 are provided on the four sides of the uncovered rectangular box-shaped outer planar member 21. The two outer planar members 21 adjacent to each other vertically and horizontally are bolted together through the third bolt holes 213 and third bolts 214 thereon.

[0042] The upper and lower adjacent outer planar members 21 are connected by staggered seams. Third stiffening ribs 212 are provided within the uncovered rectangular box-shaped outer planar members 21. Transverse third stiffening ribs 212 can be provided based on the member size. These additional stiffening ribs divide the structure into sections with a height-to-width ratio close to 1, thereby better resisting shear forces generated by concrete pouring impact loads or expansion loads.

[0043] Multiple inner / outer four-corner components 22 are spliced ​​together to form the corner part of the inner / outer module 2. The inner / outer four-corner components 22 of the inner module 3 and the outer module 2 of the rectangular pipe segment mold should be specially designed according to the curvature, height and width of the drawing. The interface should be easy to connect with the standard inner / outer plane components 21, and a certain length of smooth section should be left on one side of each corner point. Figure 12 When the outer four corner members 22 are spliced ​​up and down, the splicing seams 23 are aligned, so that the corners of the outer module 2 have splicing seams 23 that pass through from top to bottom, which facilitates the assembly or separation of the four sides of the outer module 2. The connection at the splicing seams 23 should be strengthened, such as reducing the bolt spacing, increasing the number of buckles, etc.

[0044] In this embodiment, an operating platform 6 is further included. The operating platform 6 is arranged inside the inner module 3 and is connected to the inner module 3 . The operating platform 6 serves as a working platform and also serves as a support for the inner module 3 .

[0045] The above detailed description is a specific description of a feasible embodiment of the present invention. The embodiment is not intended to limit the patent scope of the present invention. Any equivalent implementation or modification that does not depart from the present invention should be included in the patent scope of this case.

Claims

1. A modular assembled rectangular pipe jacking segment mold, characterized in that: The invention comprises a bottom mold group, an inner mold group, an outer mold group and an outer guide rail, wherein the inner mold group and the outer mold group are arranged on the bottom mold group, and a space for pouring concrete is formed between the inner mold group and the outer mold group. The inner mold group and the outer mold group have the same structure. The inner mold group comprises inner four-corner components and inner plane components. Several of the inner four-corner components are connected to each other in the up-down and left-right directions to form the corners of the inner mold group. Several of the inner plane components are connected to each other in the up-down and left-right directions to form the sides of the inner mold group. The four sides of the inner mold group are assembled into a rectangular inner mold group through the four corners of the inner mold group. The outer mold group comprises outer four-corner components. The outer four corner members are connected to each other in the up-down and left-right directions to form the corners of the outer module group, and the outer plane members are connected to each other in the up-down and left-right directions to form the sides of the outer module group. The four sides of the outer module group are assembled into a rectangular outer module group through the four corners of the outer module group; the outer guide rails are arranged perpendicular to the four sides of the bottom module group, one end of the outer guide rail is connected to the bottom module group, and the other end extends outward from the bottom module group, and the outer guide rail is flush with the bottom end of the outer module group. When the outer module group is demolded, its four sides are separated from each other by sliding on the docking outer guide rails.

2. A modular assembled rectangular jacking pipe segment mold according to claim 1, characterized in that: It also includes an inner guide rail, several of which are arranged perpendicular to the four sides of the bottom mold group, one end of the inner guide rail is connected to the bottom mold group, and the other end extends toward the center of the bottom mold group, and the inner guide rail is flush with the bottom end of the inner mold group. When the inner mold group is demolded, its four side surfaces are separated from each other by sliding on the docking inner guide rails.

3. A modular assembled rectangular jacking pipe segment mold according to claim 1, characterized in that: The bottom mold assembly includes bottom four corner components and bottom side components. Several bottom side components are assembled into four sides of the bottom mold assembly. The four sides of the bottom mold assembly are assembled into a ring-shaped rectangular bottom mold assembly through four bottom four corner components.

4. A modular assembled rectangular pipe jacking segment mold according to claim 3, characterized in that: The bottom edge member is an inverted U-shaped steel plate, and a first stiffening rib is provided inside the U-shaped steel plate. The bottom edge members are connected to each other and to the bottom four corner members by first bolts or buckles.

5. A modular assembled rectangular pipe jacking segment mold according to claim 4, characterized in that: First bolt holes are provided on both sides of the U-shaped U-shaped steel plate of the bottom edge member, and the first bolts connecting the bottom edge members and the bottom edge members and the bottom four corner members are fixed through the corresponding first bolt holes.

6. A modular assembled rectangular jacking pipe segment mold according to claim 1, characterized in that: The inner plane member is in the shape of an uncovered rectangular box, the bottom of the uncovered rectangular box is spliced ​​to form the side of the inner module that contacts the concrete, and two adjacent inner plane members are connected and fixed by bolts, pins or buckles, and the inner plane member and the inner four corner members are connected and fixed by bolts, pins or buckles. Or / and, the outer plane member is in the shape of an uncovered rectangular box, the bottom of the uncovered rectangular box is spliced ​​to form the side of the outer module that contacts the concrete, the two upper and lower adjacent or left and right adjacent outer plane members are connected and fixed by bolts, pins or buckles, and the outer plane member and the outer four corner members are connected and fixed by bolts, pins or buckles.

7. A modular assembled rectangular jacking pipe segment mold according to claim 6, characterized in that: Second bolt holes are provided on the four sides of the uncovered rectangular box-shaped inner planar member, and two inner planar members adjacent to each other vertically or horizontally are bolted together through the second bolt holes thereon; Or / and, third bolt holes are provided on four sides of the uncovered rectangular box-shaped outer planar member, and two outer planar members adjacent to each other vertically or horizontally are bolted together through the third bolt holes thereon.

8. The modular assembled rectangular jacking pipe segment mold according to claim 6, characterized in that: The two upper and lower adjacent inner plane members are staggeredly connected, and the inner plane members are provided with second stiffening ribs inside the uncovered rectangular box-shaped inner plane members; Or / and, two upper and lower adjacent outer planar members are connected with staggered seams, and a third stiffening rib is provided inside the uncovered rectangular box-shaped outer planar member.

9. The modular assembled rectangular jacking pipe segment mold according to claim 1, characterized in that: When the outer four corner components are spliced ​​up and down, the splicing seams are aligned, so that the corners of the outer module have splicing seams that pass through from top to bottom, which facilitates the assembly or separation of the four sides of the outer module.

10. The modular assembled rectangular jacking pipe segment mold according to claim 1, characterized in that: It also includes an operating platform, which is arranged inside the inner module and is connected to the inner module to support the inner module.

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