WO2024016300A1 - Mobile scaffolding suitable for construction of variable-cross-section tunnel canopy - Google Patents

Abstract

Mobile scaffolding suitable for construction of a variable-cross-section tunnel canopy (140), comprising: a portal frame system (110) provided on the ground (100) of an area to be constructed, the portal frame system (110) being movable longitudinally along a tunnel; a template system (120) longitudinally covering the outside of the portal frame system (110) along the tunnel; and an adjustment system (130) located between the template system (120) and the portal frame system (110); the adjustment system (130) comprising a plurality of slider groups, of each of the slider groups, one end being fixedly connected to the template system (120) and the other end being slidably connected to the portal frame system (110) for adjusting the distance between the template system (120) and the portal system (110) in the transverse direction of the tunnel, so as to pour a variable-cross-section tunnel canopy (140) along the template system (120). The mobile scaffolding can be suitable for construction of the tunnel canopy (140) with a variable width and a variable height while avoiding the workload of erecting and disassembling full hall scaffolding, thus greatly improving construction efficiency, construction safety and operation convenience, and effectively saving the economic cost.

Description

A mobile scaffold suitable for tunnel canopy construction with variable cross-sections Technical field

The present invention relates to the technical field of tunnel construction, and in particular to a mobile scaffold suitable for the construction of canopies in variable-section tunnels.

Background technique

With the continuous development of cities, urban ground land resources are becoming increasingly tight; urban railways usually use tunnels to alleviate the contradiction between transportation construction and land resources. Correspondingly, the number of tunnel canopies installed in the open sections of railway tunnels is also increasing. Tunnel canopies can not only prevent rainwater from entering the tunnel, bring safety protection to passengers and the tunnel, but also make the railway tunnel more harmoniously integrated into the city. in the landscape.

At present, most tunnel canopies are reinforced concrete structures, and adopt variable width and variable height designs to achieve the purpose of being integrated with the tunnel structure, corrosion-resistant and beautiful. However, for variable-section frame-type tunnel canopies, the construction method of full-floor supports is usually used, which not only requires a large amount of construction and disassembly work, but also results in a long construction period, high construction costs, and great safety hazards.

disclosure of invention

The object of the present invention is to provide a mobile scaffold suitable for the construction of variable-section tunnel canopies. The distance between the formwork system and the gantry system in the lateral direction of the tunnel can be controlled by an adjustment system provided between the formwork system and the gantry system. As a result, tunnel canopies with variable cross-sections can be formed along the formwork system, while eliminating the workload of erecting supports throughout the hall, greatly improving construction efficiency and safety.

In order to achieve the above objects, the present invention is achieved through the following technical solutions:

A mobile scaffold suitable for variable-section tunnel canopy construction, including:

The gantry system is installed on the ground in the area to be constructed; and the gantry system can move longitudinally along the tunnel;

A formwork system covering the outside of the gantry system longitudinally along the tunnel; and

An adjustment system is located between the formwork system and the gantry system; and the adjustment system includes several slider groups, one end of each slider group is fixedly connected to the formwork system, and the other end is connected to the formwork system. The door frame system is slidingly connected to adjust the spacing between the formwork system and the door frame system in the lateral direction of the tunnel, so as to form a tunnel canopy with variable cross-section along the formwork system.

Preferably, the gantry system includes:

Several columns are arranged in a matrix on the ground of the area to be constructed, and the columns located in the same column are arranged longitudinally along the tunnel; and

Several upper beams, each of which is connected to one end of the column located in the same row away from the ground, is used to fix the column.

Preferably, the portal frame system further includes: a plurality of lower longitudinal beams, each of which is connected to an end of the upright column located in the same row close to the ground, for fixing the upright column.

Preferably, the formwork system has a U-shaped cross section, and the U-shaped opening faces the ground.

Preferably, the template system includes:

At least two roof templates are arranged above the gantry system at horizontal intervals along the tunnel; and the end surface of each roof template close to the ground is fixedly connected to the slide block group, so that each roof template is fixed along the The gantry system moves horizontally to adjust the distance between the formwork system and the gantry system in the lateral direction of the tunnel;

Two side formworks, each side formwork is fixedly connected to the top formwork close to the outside of the column matrix, and the two side formworks form two sides of the U shape; and

A plurality of cover plates, each of which is connected to two adjacent top templates, is used to cover the gap between the two adjacent top templates.

Preferably, each slide block group includes: at least two slide blocks; one end of each slide block away from the ground is fixedly connected to the top template, and one end of each slide block close to the ground is corresponding to the top plate. The upper beams are slidingly connected and used to drive the corresponding top template to move horizontally along the upper beams.

Preferably, the number of the slider groups is the same as the number of the upper beams; the number of the sliders in each slider group is the same as the number of the top template.

Preferably, the adjustment system further includes:

A first telescopic rod is provided between two adjacent slide blocks for adjusting the distance between two adjacent slide blocks; and

The second telescopic rod is disposed between the side formwork and the columns located outside the column matrix, and is used to support the side formwork and adjust the distance between the side formwork and the columns.

Preferably, one end of several of the columns close to the ground is provided with running wheels to drive the gantry system, the adjustment system and the formwork system to move longitudinally along the tunnel.

Preferably, the portal frame system further includes: several auxiliary support beams, each of the auxiliary support beams is respectively connected to the upper cross beam and the upright column for fixing the upright column.

Compared with the prior art, the present invention has at least one of the following advantages:

The invention provides a mobile scaffold suitable for the construction of variable-section tunnel canopies. A gantry system that can move longitudinally along the tunnel is set on the ground in the area to be constructed, and the formwork system covers the outside of the gantry system longitudinally along the tunnel; The adjustment system is located between the formwork system and the gantry system. One end of the slider group in the adjustment system is fixedly connected to the formwork system, and the other end is slidingly connected to the gantry system to adjust the horizontal position of the formwork system and the gantry system in the tunnel. spacing, so that a tunnel canopy with variable cross-section can be formed along the formwork system, while eliminating the workload of erecting supports throughout the hall, greatly improving construction efficiency and construction safety.

In the present invention, the formwork system includes at least two top formwork, and the top formwork is arranged above the gantry system at horizontal intervals along the tunnel; at the same time, the sliders in each slider group are arranged in one-to-one correspondence with the top formwork, so that the top formwork can be placed in the corresponding position. The slider moves along the upper beam and moves different distances, thereby controlling the distance between the formwork system and the gantry system in the lateral direction of the tunnel, making the cross-section of the formwork system variable, so that it can be poured along the formwork system to form a variable shape that meets the requirements. Sectional Tunnel Canopy.

In the present invention, after the roof formwork moves horizontally along the upper beam with the slider, there will be a gap between two adjacent roof formworks, and the gap can be covered by the cover plate, thereby ensuring the continuity of the poured variable-section tunnel canopy. and flatness.

The present invention sets a jack between the lower longitudinal beam of the gantry system and the ground to adjust the height of the formwork system, thereby controlling the height of the tunnel canopy formed by pouring to form a variable cross-section, making the present invention not only suitable for the construction of a variable-width tunnel canopy. , and can also be used for the construction of tunnel canopies with varying heights.

In the present invention, several uprights are provided with running wheels at one end close to the ground, so that after the canopy pouring of the variable-section tunnel is completed, the portal system, adjustment system and formwork system can be moved as a whole along the longitudinal direction of the tunnel to the next area to be constructed. It eliminates the workload of erection and disassembly of brackets throughout the hall, greatly improves construction efficiency, construction safety and operational convenience, and can also effectively save economic costs.

Brief description of the drawings

Figure 1 is a schematic cross-sectional view of a mobile scaffold suitable for the construction of variable-section tunnel canopies provided by an embodiment of the present invention;

Figure 2 is a schematic longitudinal cross-sectional view of a mobile scaffold suitable for the construction of variable-section tunnel canopies provided by an embodiment of the present invention;

Figure 3 is a schematic diagram of the dismantling formwork state of a mobile scaffold suitable for the construction of variable cross-section tunnel canopy provided by an embodiment of the present invention.

Best way to carry out the invention

A mobile scaffold suitable for the construction of variable cross-section tunnel canopies proposed by the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are in a very simplified form and use imprecise proportions, and are only used to conveniently and clearly assist in explaining the embodiments of the present invention. In order to make the objects, features and advantages of the present invention more apparent, please refer to the accompanying drawings. It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to coordinate with the content disclosed in the specification for the understanding and reading of those familiar with this technology, and are not used to limit the implementation of the present invention. conditions, it has no technical substantive significance. Any structural modifications, changes in proportions or adjustments in size should still fall within the scope of the present invention without affecting the efficacy and purpose of the present invention. Within the scope of the disclosed technical content.

As shown in FIGS. 1 to 3 , this embodiment provides a mobile scaffold suitable for the construction of tunnel canopies with variable cross-sections, including: a gantry system 110 disposed on the ground 100 of the area to be constructed in the open section of the tunnel; and The gantry system 110 can move longitudinally along the tunnel; the formwork system 120 covers the outside of the gantry system 110 along the longitudinal direction of the tunnel; and the adjustment system 130 is located between the formwork system 120 and the gantry system 110 time; and the adjustment system 130 includes several slider groups, one end of each slider group is fixedly connected to the template system 120, and the other end is slidingly connected to the gantry system 110 for adjusting the The distance between the formwork system 120 and the gantry system 110 in the transverse direction of the tunnel is such that the tunnel canopy 140 with variable cross-section is cast along the formwork system 120 .

Please refer to Figures 1 and 2 at the same time. The gantry system 110 includes: several columns 1101, which are arranged in a matrix on the ground 100 of the area to be constructed; all the columns 1101 form a column matrix, and are located in the same column. The upright columns 1101 are arranged longitudinally along the tunnel, and the upright columns 1101 located in the same row can be arranged transversely along the tunnel; a plurality of upper cross beams 1102, each of the upper cross beams 1102 corresponds to the upright columns 1101 located in the same row. One end away from the ground 100 is connected and used to fix the column 1101 .

It can be understood that in some other embodiments, the mast system 110 further includes: a plurality of lower longitudinal beams 1103 , each of the lower longitudinal beams 1103 corresponding to the columns 1101 located in the same row close to the ground 100 One end is connected to fix the column 1101.

In some embodiments, the gantry system 110 also includes: several auxiliary support beams 1105, each of the auxiliary support beams 1105 is connected to the upper cross beam 1102 and the upright column 1101 respectively, and is used to fix the upright column. 1101.

Specifically, in this embodiment, the number of the upper beams 1102 is the same as the number of rows of the column matrix, and the number of the lower longitudinal beams 1103 is the same as the number of columns of the column matrix; through the upper beams 1102 and the lower longitudinal beam 1103 can ensure the stability of the column matrix, thereby ensuring the stability of the mast system 110 . More specifically, as shown in Figure 1, among the columns located in the same row, each column 1101 can be connected to the corresponding upper beam 1102 of the row through the auxiliary support beam 1105, so that the column 1101 and the auxiliary beam 1102 are connected to each other. The support beam 1105 and the upper beam 1102 can form a stable triangular structure, thereby further ensuring the stability of the gantry system 110 . Preferably, the upright column 1101, the upper beam 1102 and the lower longitudinal beam 1103 can all use HW300*300*10*15 steel, and the auxiliary support beam 1105 can use double-channel 16# channel steel, but the present invention Not limited to this.

Specifically, in this embodiment, two adjacent auxiliary support beams 1105 can be fixedly connected through horizontal rods 1106 to make the gantry system 110 more stable; the auxiliary support beams 1105 and all A construction platform 1107 is provided between the columns 1102 for construction workers to stand and work. In addition, as shown in Figure 2, in the columns in the same row, two adjacent columns 1101 are connected and fixed in a scissor brace manner to further ensure the stability of the gantry system 110, but this is not used in the present invention. limit.

Please continue to refer to FIGS. 1 and 2 . The formwork system 120 has a U-shaped cross section, and the U-shaped opening faces the ground 100 .

Specifically, in this embodiment, the door frame system 110 is located in the U-shaped opening of the formwork system 120, and the door frame system 110 is connected to the formwork system 120 through the adjustment system 130 to stabilize it. The formwork system 120 is supported on the ground, so that the tunnel canopy 140 with variable cross-section can be poured along the formwork system 120 . In addition, a jack 1108 can also be provided between the lower longitudinal beam 1103 of the gantry system 110 and the ground 100 to adjust the height of the formwork system 120, thereby controlling the height of the tunnel canopy 140 that is cast to form a variable section. , so that this embodiment is not only suitable for the construction of tunnel canopies with variable cross-sections, but also can be used for the construction of tunnel canopies with variable heights, but the invention is not limited to this.

Please continue to refer to Figures 1 and 2. The formwork system 120 includes: at least two top formworks 1201, which are arranged above the gantry system 110 at transverse intervals along the tunnel; and each top formwork 1201 is close to the ground 100 The end surface is fixedly connected to the slide block group, so that each top formwork 1201 moves horizontally along the gantry system 110 to adjust the cross direction of the formwork system 120 and the gantry system 110 in the tunnel. spacing; two side templates 1202, each side template 1202 is fixedly connected to the top template 1201 close to the outside of the column matrix, and the two side templates 1201 form two sides of the U shape; and several covers Plate 1203, each cover plate 1203 is connected to two adjacent top templates 1201, and is used to cover the gap between the two adjacent top templates 1201.

It can be understood that in some other embodiments, each slide block group includes: at least two slide blocks 1301; one end of each slide block 1301 away from the ground 100 is fixedly connected to the top template 1201. , one end of each slide block 1301 close to the ground 100 is slidingly connected to the upper beam 1102, and is used to drive the corresponding top template 1201 to move horizontally along the upper beam 1102.

In some embodiments, the number of the slider groups is the same as the number of the upper beams 1102; the number of the sliders 1301 in each slider group is the same as the number of the top templates 1201.

Specifically, in this embodiment, the number of the top formwork 1201 is 2; the panels of the top formwork 1201 and the side formwork 1202 can be made of 5mm steel plates, the frame can be made of 12*80mm flat iron, and the ribs can be made of The No. 8 channel steel, back frame and frame are all fixed on the panel by double welding of No. 10 slots to ensure the stability of the top formwork 1201 and the side formwork 1202. More specifically, several jacking beams 1204 can be arranged at intervals along the longitudinal direction of the tunnel on the roof formwork 1201 to prevent the roof formwork 1201 from deforming; similarly, on the side formwork 1202 along the longitudinal direction of the tunnel, several roof beams 1204 can be provided. Several side beams 1205 are arranged at intervals to prevent the side formwork 1202 from deforming. Preferably, the number of the top passage beams 1204 and the side passage beams 1205 is the same, and each top passage beam 1204 and the corresponding side passage beam 1205 can be integrally arranged; the top passage beams 1204 can be Using 14# double channel steel, the side beam 1205 can use 100*50*5 rectangular steel, but the present invention is not limited to this.

Specifically, in this embodiment, the top template 1201 and the slider 1301 are arranged in one-to-one correspondence, and the end surface of the top template 1201 close to the ground 100 (that is, the lower surface of the top template 1201) can be moved vertically through The through beam is fixedly connected to the corresponding end of the slider 1301 away from the ground 100 (ie, the top end of the slider 1301); because the end of the slider 1301 close to the ground 100 (ie, the bottom end of the slider 1301 ) is slidingly connected to the upper beam 1102, then each top formwork 1201 can move along the upper beam 1102 and move different distances driven by the corresponding slider 1301 to control the formwork system 120 and The spacing of the gantry system 110 in the lateral direction of the tunnel makes the cross-section of the formwork system 120 variable, so that a variable-section tunnel canopy 140 that meets preset requirements can be formed along the formwork system 120. However, The present invention is not limited to this.

Specifically, in this embodiment, after each top template 1201 moves horizontally along the upper beam 1102 with the slider 1301, there will be a gap between two adjacent top templates 1201. At this time, the cover plate 1203 can be used to cover the gap, and the end surface of the cover plate 1203 away from the ground 100 (that is, the upper surface of the cover plate 1203) and the end surface of the top template 1201 away from the ground 100 (that is, the top surface) The upper surface of the formwork 1201 is flush to ensure the continuity and smoothness of the poured variable-section tunnel canopy 140, but the present invention is not limited to this.

Please continue to refer to Figure 1. The adjustment system 130 also includes: a first telescopic rod 1302, which is disposed between two adjacent slide blocks 1301 and is used to adjust the distance between the two adjacent slide blocks 1301. ; The second telescopic rod 1303 is provided between the side formwork 1202 and the column 1101 located outside the column matrix, for supporting the side formwork 1202 and adjusting the distance between the side formwork 1202 and the column 1101.

Specifically, in this embodiment, the first telescopic rod 1302 can be used to control the two adjacent sliders 1301 to move along the upper beam 1102 to drive the two adjacent top templates 1201 along the The upper beam 1102 moves to adjust the spacing between the two adjacent roof formworks 1201, thereby adjusting the spacing between the formwork system 120 and the gantry system 110 in the lateral direction of the tunnel, that is, to achieve the control of the tunnel. Adjustment of the cross-section of the formwork system 120 . In addition, the labor-saving effect can also be achieved by adjusting the distance between two adjacent slide blocks 1301 through the first telescopic rod 1302, but the present invention is not limited to this.

Specifically, in this embodiment, since the upright column 1101 is fixed, the second telescopic rod 1303 located between the upright column 1101 and the side formwork 1202 is adjusted to a stressed state, so that it can be supported. The side formwork 1202 is raised, so that the variable-section tunnel canopy 140 that meets the preset requirements can be poured along the formwork system 120, but the present invention is not limited thereto.

Please refer to Figures 1 and 2 at the same time. Several of the uprights 1101 are provided with running wheels 1104 at one end close to the ground 100 to drive the gantry system 110, the adjustment system 130 and the formwork system 120 along all directions. The tunnel moves longitudinally.

Specifically, in this embodiment, several uprights can be selected from all the uprights 1101 and the running wheels can be provided at one end of them close to the ground, so as to facilitate the installation of the variable-section tunnel canopy 140 after the pouring is completed. The mobile scaffolding moves longitudinally along the tunnel to the next area to be constructed, eliminating the workload of erecting and dismantling the entire scaffolding, greatly improving construction efficiency, construction safety and ease of operation, while also effectively saving economic costs. Preferably, several walking tracks 150 can be laid longitudinally along the tunnel on the ground 100 of the area to be constructed, so that the running wheels 1104 on the columns 1101 can move along the corresponding walking tracks 150, Thereby, the gantry system 110, the adjustment system 130 and the formwork system 120 are driven to move longitudinally along the tunnel to the next area to be constructed, but the invention is not limited thereto.

In other embodiments, the running wheels 1104 may also be provided at one end of all the uprights 1101 close to the ground, but the present invention is not limited thereto.

In addition, this embodiment also provides a method of using a mobile scaffold suitable for the construction of variable cross-section tunnel canopies. Specifically, when building a formwork, it includes: step S1, connecting the formwork system 120 and the gantry system 110 Install and fix; step S2, place several jacks 1108 at the lower longitudinal beams 1103 of the gantry system 110; step S3, lift the formwork system 120 to the predetermined position through the jacks 1108 and the gantry system 110. Set the height; Step S4, add wooden squares between the lower longitudinal beam 1103 and the ground 100, and support the wooden squares to a stressed state; Step S5, add wooden squares between the side formwork 1202 and the column matrix The second telescopic rod 1303 is installed between the outer columns 1101 and adjusted to a stressed state; step S6, adjust the distance between the slide blocks 1301 through the first telescopic rod 1302 so that the left and right sides of the top template 1201 are in Preset position; Step S7, fix the cover plate 1203 between the two adjacent top formworks 1201 to cover the gap between the top formworks 1201; Step S8, pour along the formwork system 120 Concrete to form a tunnel canopy 140 of variable cross-section. When removing the formwork, as shown in Figure 3, it includes: step S9, loosen the second telescopic rod of the side formwork 1202 close to the top formwork 1201, and use the second telescopic rod of the side formwork 1202 close to the ground 100. The rod shrinks the distance between the side formwork 1202 and the upright column 1101; Step S10, sink the jack 1108 to a fully retracted state; Step S11, remove the cover 1203, and shrink the first telescopic rod 1302. The side formwork 1202 is 100m to 200m away from the poured tunnel canopy; Step S12: Use external force to pull the gantry system 110, the adjustment system 130 and the formwork system 120 as a whole to the next area to be constructed, and so on. Construction can eliminate the workload of erection and disassembly of brackets throughout the hall, thus greatly improving construction efficiency and effectively saving construction period.

To sum up, this embodiment provides a mobile scaffold suitable for the construction of canopies in variable-section tunnels. The gantry system is installed on the ground of the area to be constructed and can move longitudinally along the tunnel. The formwork system covers the door longitudinally along the tunnel. outside the frame system; the adjustment system is located between the formwork system and the gantry system, and one end of the slider group in the adjustment system is fixedly connected to the formwork system, and the other end is slidingly connected to the gantry system to adjust the relationship between the formwork system and the gantry system. The horizontal spacing of the tunnel can be poured along the formwork system to form a tunnel canopy with variable cross-sections, while eliminating the workload of erecting supports throughout the tunnel, greatly improving construction efficiency and construction safety. In this embodiment, the formwork system includes at least two top formwork, and the top formwork is arranged at horizontal intervals along the tunnel above the gantry system; at the same time, the sliders in each slider group are arranged in one-to-one correspondence with the top formwork, so that the top formwork can be The corresponding slider moves along the upper beam and moves different distances, thereby controlling the distance between the formwork system and the gantry system in the lateral direction of the tunnel, making the cross-section of the formwork system variable, so that it can be poured along the formwork system to form a structure that meets the requirements. Variable cross-section tunnel canopy. After the roof formwork moves horizontally along the upper beam with the slider, there will be a gap between the two adjacent roof formworks, which can be covered by the cover plate to ensure the continuity and smoothness of the poured variable-section tunnel canopy. . In addition, this embodiment sets a jack between the lower longitudinal beam of the gantry system and the ground to adjust the height of the formwork system, thereby controlling the height of the tunnel canopy poured to form a variable cross-section, making this embodiment not only suitable for variable-width tunnel canopies. Tunnel canopy construction can also be used for tunnel canopy construction with varying heights.

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 that these entities or operations are mutually exclusive. any such actual relationship or sequence exists between them. Furthermore, the terms "comprises," "comprises," or any other variations thereof are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that includes a list of elements includes not only those elements, but also those not expressly listed other elements, or elements inherent to the process, method, article or equipment. Without further limitation, an element defined by the statement "comprises a..." does not exclude the presence of additional identical elements in a process, method, article, or apparatus that includes the stated element.

In the description of the present invention, it should be understood that the terms "center", "height", "thickness", "upper", "lower", "vertical", "horizontal", "top", "bottom", The orientations or positional relationships indicated by "inner", "outer", "axial", "radial", "circumferential", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplification. The description does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore is not to be construed as a limitation of the invention. In the description of the present invention, unless otherwise stated, "plurality" means two or more.

In the description of the present invention, unless otherwise expressly stipulated and limited, the terms "installation", "connection", "connection" and "fixing" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. , or integrated; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two elements or an interaction between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

In the present invention, unless otherwise expressly provided and limited, the term "above" or "below" a first feature of a second feature may include direct contact between the first and second features, or may also include the first and second features. Not in direct contact but through additional characteristic contact between them. Furthermore, the terms "above", "above" and "above" a first feature on a second feature include the first feature being directly above and diagonally above the second feature, or simply mean that the first feature is higher in level than the second feature. “Below”, “under” and “under” the first feature is the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature is less horizontally than the second feature.

Although the content of the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as limiting the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above. Therefore, the protection scope of the present invention should be defined by the appended claims.

Claims (10)

1. A mobile scaffold suitable for the construction of variable cross-section tunnel canopy, which is characterized by including:

   The gantry system (110) is installed on the ground (100) of the area to be constructed; and the gantry system (110) can move longitudinally along the tunnel;

   A formwork system (120) covers the outside of the gantry system (110) longitudinally along the tunnel; and

   The adjustment system (130) is located between the formwork system (120) and the gantry system (110); and the adjustment system (130) includes several slider groups, one end of each slider group It is fixedly connected to the formwork system (120), and the other end is slidingly connected to the gantry system (110) for adjusting the distance between the formwork system (120) and the gantry system (110) in the lateral direction of the tunnel. , to form a tunnel canopy (140) with variable cross-section along the formwork system (120).
2. The mobile scaffold suitable for variable-section tunnel canopy construction as claimed in claim 1, characterized in that the gantry system (110) includes:

   Several columns (1101) are arranged in a matrix on the ground (100) of the area to be constructed, and the columns (1101) in the same column are arranged longitudinally along the tunnel; and

   Several upper cross beams (1102), each upper cross beam (1102) is connected to one end of the upright column (1101) located in the same row away from the ground (100), for fixing the upright column (1101).
3. The mobile scaffold suitable for variable-section tunnel canopy construction according to claim 2, characterized in that the gantry system (110) further includes: a plurality of lower longitudinal beams (1103), each of the lower longitudinal beams (1103). The beam (1103) is connected to one end of the column (1101) located in the same row close to the ground (100), and is used to fix the column (1101).
4. The mobile scaffold suitable for variable-section tunnel canopy construction according to claim 2, characterized in that the cross section of the formwork system (120) is U-shaped, and the U-shaped opening faces the ground (100).
5. The mobile scaffold suitable for variable-section tunnel canopy construction as claimed in claim 4, characterized in that the formwork system (120) includes:

   At least two roof templates (1201) are arranged above the gantry system (110) at transverse intervals along the tunnel; and the end surface of each roof template (1201) close to the ground (100) is in contact with the slider group. Fixedly connected so that each top formwork (1201) moves horizontally along the gantry system (110) to adjust the latitude of the formwork system (120) and the gantry system (110) in the lateral direction of the tunnel. spacing;

   Two side formworks (1202), each side formwork (1202) is fixedly connected to the top formwork (1201) close to the outside of the column matrix, and the two side formworks (1201) form two sides of a U-shape; as well as

   Several cover plates (1203), each cover plate (1203) is connected to two adjacent top templates (1201), and is used to cover the gap between the two adjacent top templates (1201). .
6. The mobile scaffold suitable for variable-section tunnel canopy construction according to claim 5, characterized in that each slider group includes: at least two sliders (1301); each slider (1301 ) one end away from the ground (100) is fixedly connected to the top template (1201), and one end of each slide block (1301) close to the ground (100) is slidingly connected to the upper beam (1102) for The corresponding top template (1201) is driven to move horizontally along the upper beam (1102).
7. The mobile scaffold suitable for variable-section tunnel canopy construction according to claim 6, characterized in that the number of the slider groups is the same as the number of the upper beams (1102); each of the slider groups The number of sliders (1301) is the same as the number of top templates (1201).
8. The mobile scaffold suitable for variable-section tunnel canopy construction as claimed in claim 6, characterized in that the adjustment system (130) further includes:

   A first telescopic rod (1302) is provided between two adjacent slide blocks (1301) and is used to adjust the distance between the two adjacent slide blocks (1301); and

   The second telescopic rod (1303) is provided between the side formwork (1202) and the column (1101) located outside the column matrix, and is used to support the side formwork (1202) and adjust the side formwork (1202). ) and the distance between the uprights (1101).
9. The mobile scaffold suitable for variable-section tunnel canopy construction as claimed in claim 2, characterized in that one end of several of the uprights (1101) close to the ground (100) is provided with running wheels (1104). The gantry system (110), the adjustment system (130) and the formwork system (120) are driven to move longitudinally along the tunnel.
10. The mobile scaffold suitable for tunnel canopy construction with variable cross-section as claimed in claim 2, characterized in that the portal frame system (110) further includes: several auxiliary support beams (1105), each of the auxiliary support beams (1105). The beam (1105) is connected to the upper cross beam (1102) and the upright column (1101) respectively, and is used to fix the upright column (1101).

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