Installation method of arch structure

Abstract

The present invention provides a method for installing an arch structure, comprising: constructing a plurality of foundations on the ground corresponding to locations where the arch structure is to be installed, dividing the arch structure from top to bottom into a plurality of unit segments; hoisting the Nth unit segment, where N=1, rotating and connecting the top ends of two N+1th unit segments to the two bottom ends of the Nth unit segment, thereby lifting the Nth unit segment upward and pushing the bottom end of the N+1th unit segment toward the Nth unit segment, so that the N+1th unit segment rotates and is spliced to the bottom end of the Nth unit segment; and setting N=N+1, rotating and connecting the top end of the N+1th unit segment to the bottom end of the corresponding Nth unit segment, thereby lifting the spliced unit segment upward and pushing the bottom end of the N+1th unit segment toward the Nth unit segment, so that the N+1th unit segment rotates and is spliced to the bottom end of the Nth unit segment. The present invention improves the installation efficiency of the arch structure.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and in particular to a method for installing an arch structure. Background Art

[0002] During the steel structure construction process, we will encounter the installation of large-span, ultra-high arch-shaped steel structures. The conventional installation method is to erect a section of support frame and install a section of steel structure until the entire arch structure is installed. This implementation method requires the use of large truck cranes, crawler cranes, tower cranes and other machinery to lift and install the arch from bottom to top, and a large number of support frames need to be erected, which results in high machinery costs. Summary of the Invention

[0003] In view of the above situation, the present invention provides an installation method for an arch structure, which solves the technical problem of excessive support frame erection in traditional construction. By setting a lifting frame, a slide rail is set on the side of the lifting frame, and the connection method between the two adjacent unit segments is modified to a rotating connection, and then the unit segment slides along the slide rail, so that the two adjacent unit segments are docked, thereby improving the installation efficiency of the arch structure.

[0004] To achieve the above object, the technical solution adopted by the present invention is:

[0005] A method for installing an arch structure comprises the following steps:

[0006] S1, constructing a plurality of foundations on the ground corresponding to the location of the arch structure to be installed, dividing the arch structure into a plurality of unit segments from top to bottom, wherein the first unit segment has one corresponding to the top position of the arch structure, and each of the remaining unit segments has two symmetrically arranged along the symmetry axis of the arch structure;

[0007] S2, hoist the Nth unit segment, N=1, rotate the top ends of the two N+1th unit segments to connect them to the two bottom ends of the Nth unit segment respectively, then lift the Nth unit segment upward and push the bottom end of the N+1th unit segment in a direction close to the Nth unit segment, so that the N+1th unit segment rotates and is spliced to the bottom of the Nth unit segment, and the N+1th unit segment is placed on the ground, thereby fixing the Nth unit segment and the N+1th unit segment;

[0008] S3, let N = N + 1, rotate the top of the N + 1th unit segment to connect it to the bottom of the corresponding Nth unit segment, then lift the spliced unit segments upward and push the bottom of the N + 1th unit segment toward the Nth unit segment, so that the N + 1th unit segment rotates and connects to the bottom of the Nth unit segment, and the N + 1th unit segment is placed on the ground, thereby fixing the Nth unit segment and the N + 1th unit segment;

[0009] S4, repeat S3 until all unit segments are spliced together and the bottom end of the lowest unit segment is fixed to the top of the foundation.

[0010] A further improvement of the method for installing the arch structure of the present invention is that, when installing the unit segments, the method further comprises:

[0011] providing a slide rail, wherein one end of the slide rail is fixed to the top of the foundation and the other end of the slide rail extends away from the foundation;

[0012] providing the tank and sliding the tank on the slide rail;

[0013] The unit segment is placed on the top of the tank, and the tank is pushed to move along the slide rail toward the direction close to the foundation, so as to drive the bottom end of the unit segment to move toward the direction close to the foundation.

[0014] A further improvement of the method for installing the arch structure of the present invention is that the bottom of the arch structure has an arch foot section for connecting to the foundation;

[0015] When all the unit segments are spliced together, lift the spliced unit segments upward until the distance between the bottom end of the lowest unit segment and the foundation is equal to the height of the arch foot segment, then remove the slide rail and the tank, and splice the top end of the arch foot segment to the bottom end of the lowest unit segment and fix the bottom end to the top surface of the foundation.

[0016] A further improvement of the method for installing the arch structure of the present invention is that, before hoisting the first unit segment, the method further comprises:

[0017] An assembling frame and a plurality of roadbed boxes are installed on the ground at a position corresponding to the first unit segment. The assembling frame is used to support the center position of the first unit segment and the bottom of the first unit segment is placed on the top of the roadbed box.

[0018] A further improvement of the method for installing the arch structure of the present invention is that a lug is fixed to the side of each unit segment and a pin hole is opened on the lug;

[0019] The ear plate at the top of the N+1th unit segment is fitted to the ear plate at the bottom of the Nth unit segment, and then a pin is inserted into the two pin holes, so that the N+1th unit segment and the Nth unit segment are connected by rotation around the pin shaft.

[0020] A further improvement of the method for installing an arch structure of the present invention is that the arch structure includes two U-shaped arches fixedly connected at the top and symmetrically arranged along a vertical plane coinciding with the top of the arch structure, the first unit segment has one corresponding to the top position of the arch structure, and the remaining unit segments are symmetrically arranged along the vertical plane. After the N+1 unit segment is spliced to the N unit segment, the method further includes:

[0021] Two support rods are fixedly connected between two N+1th unit segments that are oppositely arranged and located on both sides of the vertical plane, and the two support rods cross to form an X shape.

[0022] A further improvement of the method for installing the arch structure of the present invention is that the arch structure further includes a skybridge provided in the Nth unit section, and further includes:

[0023] When the installation of the Nth unit section is completed, the overpass is installed on the Nth unit section.

[0024] A further improvement of the installation method of the arch structure of the present invention is that a corridor is provided on the top of the arch structure, and further comprises:

[0025] After all the unit segments are spliced together, the corridor is installed on the top of the first unit segment.

[0026] A further improvement of the method for installing an arch structure of the present invention is that, before fixing the foundation on the ground at positions corresponding to the two bottom ends of the arch structure to be installed, the method further comprises:

[0027] Excavate a foundation pit on the ground at a location corresponding to the location where the foundation is to be formed;

[0028] A steel cage is provided, which is fixed in the foundation pit and partially protrudes from the top of the foundation pit, and concrete is poured at the position corresponding to the steel cage to form the foundation.

[0029] A further improvement of the method for installing the arch structure of the present invention is that it further comprises:

[0030] A lifting frame is provided, fixed between two adjacent foundations, and the unit segment is lifted using the lifting frame.

[0031] The installation method of the arch structure of the present invention is achieved by setting a lifting frame, a slide rail and a tank car, so that the tank car slides along the slide rail to make the unit segment to be installed rotate upward and thus be installed on the upper unit segment, avoiding the unit segment to be hoisted and installed, avoiding the erection of steel frames, and reducing the use of machinery. In addition, the installation method pushes the unit segment up by the tank car, reduces the force applied when the lifting frame is lifted, reduces the loss of the lifting frame, and improves the docking efficiency of the two adjacent unit segments by rotating the bottom unit segment and docking it with the upper unit segment. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0033] Figure 1 It is a schematic diagram of the completed foundation in the installation method of the arch structure of the present invention.

[0034] Figure 2 It is a schematic diagram of the slide rail after construction is completed in the installation method of the arch structure of the present invention.

[0035] Figure 3 It is a schematic diagram of the first unit segment before installation in the installation method of the arch structure of the present invention.

[0036] Figure 4 It is a schematic diagram of a completed lifting frame in the installation method of the arch structure of the present invention.

[0037] Figure 5 It is a schematic diagram before the second unit segment is hoisted in the installation method of the arch structure of the present invention.

[0038] Figure 6 yes Figure 5 Enlarged schematic diagram of part A.

[0039] Figure 7 It is a schematic diagram after the second unit segment is hoisted in the installation method of the arch structure of the present invention.

[0040] Figure 8 It is a schematic diagram of installing support rods in the installation method of the arch structure of the present invention.

[0041] Figure 9 It is a schematic diagram of installing an overpass in the installation method of the arch structure of the present invention.

[0042] Figure 10 It is a schematic diagram of installing the arch foot section in the installation method of the arch structure of the present invention.

[0043] Figure 11 It is a schematic diagram of the hoisting corridor in the installation method of the arch structure of the present invention.

[0044] Figure 12 It is a schematic diagram of splicing corridors in the installation method of the arch structure of the present invention.

[0045] Figure 13 It is a schematic diagram of installing a canopy in the installation method of the arch structure of the present invention.

[0046] The correspondence between the reference numerals and the components is as follows: steel cage 1, foundation 11, connecting beam 12, slide rail 13, tank 14, assembled tire frame 21, roadbed box 22, arch structure 3, first unit section 31, connecting seat 311, threading hole 312, second unit section 32, support rod 33, arch foot section 34, cross beam 35, overpass 36, ear plate 37, lifting frame 4, steel pipe pile 41, base 42, steel cable 43, corridor 5, cover roof 51. DETAILED DESCRIPTION

[0047] To facilitate understanding of the present invention, the following description is given with reference to the accompanying drawings and embodiments.

[0048] See also Figures 1 to 13 The present invention provides a method for installing an arch structure, comprising the following steps:

[0049] S1, constructing a plurality of foundations on the ground corresponding to the location of the arch structure to be installed, dividing the arch structure into a plurality of unit segments from top to bottom, wherein the first unit segment has one corresponding to the top position of the arch structure, and each of the remaining unit segments has two symmetrically arranged along the symmetry axis of the arch structure;

[0050] S2, hoist the Nth unit segment, N=1, rotate the top ends of the two N+1th unit segments to connect them to the two bottom ends of the Nth unit segment respectively, then lift the Nth unit segment upward and push the bottom end of the N+1th unit segment in a direction close to the Nth unit segment, so that the N+1th unit segment rotates and is spliced to the bottom of the Nth unit segment, and the N+1th unit segment is placed on the ground, thereby fixing the Nth unit segment and the N+1th unit segment;

[0051] S3, let N = N + 1, rotate the top of the N + 1th unit segment to connect it to the bottom of the corresponding Nth unit segment, then lift the spliced unit segments upward and push the bottom of the N + 1th unit segment toward the Nth unit segment, so that the N + 1th unit segment rotates and connects to the bottom of the Nth unit segment, and the N + 1th unit segment is placed on the ground, thereby fixing the Nth unit segment and the N + 1th unit segment;

[0052] S4, repeat S3 until all unit segments are spliced together and the bottom end of the lowest unit segment is fixed to the top of the foundation.

[0053] A preferred embodiment of the installation method of the arch structure 3 of the present invention is as follows: Figures 3 to 6 As shown, when installing the unit segment, it also includes:

[0054] A slide rail 13 is provided, one end of which is fixed to the top of the base 11 and the other end of which extends away from the base 11;

[0055] Providing the tank 14 and sliding the tank on the slide rail 13;

[0056] The unit segment is placed on the top of the tank 14 , and the tank 14 is pushed along the slide rail 13 to move toward the foundation 11 , thereby driving the bottom end of the unit segment to move toward the foundation 11 .

[0057] Further, such as Figure 10 and Figure 11As shown, the bottom of the arch structure 3 has an arch foot section 34 for connecting to the foundation 11;

[0058] When all the unit segments are spliced together, the spliced unit segments are lifted up until the distance between the bottom end of the arch structure 3 and the foundation 11 is equal to the height of the arch foot segment 34, and then the slide rail 13 and the tank 14 are removed, and the arch foot segment 34 is hoisted and installed between the foundation 11 and the arch structure 3.

[0059] Further, such as Figure 4 As shown, it also includes:

[0060] A lifting frame 4 is provided and fixed between two adjacent foundations 11 , and the unit segment is lifted by using the lifting frame 4 .

[0061] Specifically, a reel and a steel cable wound on the reel are provided on the top of the lifting frame 4;

[0062] A threading hole 312 is opened on the side of the unit segment, and the steel cable 43 is passed through the threading hole 312 . Then, the steel cable 43 is gradually wound on the reel to lift the unit segment upward.

[0063] Further, such as Figures 1 to 3 As shown, before hoisting the first unit segment 31, the method further includes:

[0064] An assembling frame 21 and a plurality of roadbed boxes 22 are installed on the ground at a position corresponding to the first unit section 31 . The assembling frame 21 supports the center position of the first unit section 31 and the bottom of the first unit section 31 is placed on the top surface of the roadbed box 22 .

[0065] Preferably, a column is vertically fixed to the top surface of the roadbed box 22, and the bottom end of the first unit segment is sleeved on the column to connect the roadbed box 22 and the first unit segment.

[0066] Further, such as Figure 6 As shown, a lug plate 37 is fixed to the side of each unit segment and a pin hole is opened on the lug plate 37;

[0067] The ear plate 37 on the top of the N+1th unit segment is fitted to the ear plate 37 on the bottom of the Nth unit segment, and then a pin is inserted into the two pin holes, so that the N+1th unit segment and the Nth unit segment are connected by rotation around the pin shaft.

[0068] Preferably, if Figure 8 and Figure 9As shown, the arch structure includes two U-shaped arches fixedly connected at the top and symmetrically arranged along a vertical plane coinciding with the top of the arch structure. The first unit segment has one corresponding to the top position of the arch structure, and the remaining unit segments are symmetrically arranged along the vertical plane. The N+1 unit segment is spliced after the N unit segment, and further includes:

[0069] Two support rods are fixedly connected between two N+1th unit segments that are oppositely arranged and located on both sides of the vertical plane, and the two support rods 33 cross to form an X shape.

[0070] Preferably, there are four second unit segments, three unit segments and four fourth unit segments, and a crossbeam 35 is fixed between two fourth unit segments located on the same side of the symmetry axis.

[0071] Further, such as Figure 8 and Figure 9 As shown, the arch structure 3 further includes a sky bridge 36 provided in the Nth unit segment, and further includes:

[0072] When the Nth unit segment is installed, the sky bridge 36 is lifted by the lifting frame 4 and then installed on the Nth unit segment.

[0073] Preferably, the overpass 36 is installed in the fourth unit section.

[0074] Further, such as Figures 11 to 13 As shown, the top of the arched structure is also provided with a corridor 5, and further includes:

[0075] After all the unit segments are spliced together, the corridor 5 is hoisted by the lifting frame 4 and then installed on the top of the first unit segment.

[0076] Preferably, a rectangular connecting seat 311 is provided on the top of the first unit section 31 , and the corridor 5 is fixed on the top of the connecting seat 311 .

[0077] Specifically, such as Figure 1 As shown, before fixing the foundation 11 on the ground at positions corresponding to the two bottom ends of the arch structure 3 to be installed, the following is also included:

[0078] Excavate a foundation pit on the ground at a location corresponding to the location where the foundation is to be formed;

[0079] A steel cage 1 is provided, which is fixed in the foundation pit and partially protrudes from the top of the foundation pit. Concrete is poured at a position corresponding to the steel cage to form the foundation 11.

[0080] Preferably, there are four foundations 11 , and a connecting beam 12 is provided between two adjacent foundations 11 .

[0081] Preferably, the assembling tire frame 21 is supported at the bottom of the first unit segment. When the first unit segment is connected to the lifting frame 4 and lifted to the same height as the foundation 11, the assembling tire frame 21 and the roadbed box 22 are removed.

[0082] Specifically, a steel pipe pile 41 is anchored on the ground at a position corresponding to the bottom of the lifting frame 4. A concrete base 42 is provided on the top of the steel pipe pile 41. The lifting frame 4 is installed on the top of the base 42, and one end of the slide rail 13 is fixed to the top of the base 42.

[0083] Preferably, the lifting frame 4 consists of four vertical parts and a horizontal frame top. The top of the frame top is provided with guide grooves corresponding to the four vertical parts, and the steel cable 43 is slidably arranged in the guide grooves. The side of the vertical part is also fixed with an inclined windproof cable.

[0084] Preferably, if Figure 13 As shown, a cover 51 is also installed on the top of the corridor 5 to close the corridor 5.

[0085] Preferably, two adjacent unit segments are connected by welding.

[0086] The installation method of the arch structure of the present invention is achieved by setting a lifting frame, a slide rail and a tank car, so that the tank car slides along the slide rail to make the unit segment to be installed rotate upward and thus be installed on the upper unit segment, avoiding the unit segment to be hoisted and installed, avoiding the erection of steel frames, and reducing the use of machinery. In addition, the installation method pushes the unit segment up by the tank car, reduces the force applied when the lifting frame is lifted, reduces the loss of the lifting frame, and improves the docking efficiency of the two adjacent unit segments by rotating the bottom unit segment and docking it with the upper unit segment.

[0087] A specific implementation example of the method for installing the arch structure of the present invention is as follows: a foundation pit is excavated on the ground at a location corresponding to the location where the foundation is to be formed; the steel cage 1 is fixed in the foundation pit with a portion thereof protruding from the top of the foundation pit; a horizontal steel cage is fixed between two adjacent steel cages 1 and at a height above the ground; concrete is poured at the location corresponding to the steel cage to form the foundation 11; and a connecting beam 12 is formed at the location corresponding to the horizontal steel cage;

[0088] Install an assembly frame 21 on the ground at the center of the arch structure 3 to be installed, and install a corresponding roadbed box 22 on the ground at the bottom of the arch structure 3 to be installed. Put the first unit section of the arch structure 3 on the top column of the roadbed box 22 and place it on the top of the assembly frame 21.

[0089] Install the lifting frame 4, pass the steel cable 43 through the threading hole 312, and use the lifting frame 4 to pull the steel cable 43 to lift the bottom of the first unit section 31 upward to be flush with the slide rail 13;

[0090] The four second unit segments 32 are rotatably mounted on the top of the tank 14, and the ear plates 37 of the second unit segments are connected to the four corresponding ear plates at the bottom of the first unit segments via pins. The tank 14 is slid along the slide rail 13 toward the lifting frame 4, and the lifting frame 4 simultaneously lifts the first unit segment upward, so that the second unit segment is spliced to the first unit segment, thereby fixedly connecting the top end of the second unit segment and the bottom end of the first unit segment.

[0091] An X-shaped support rod 33 is fixedly connected between two adjacent second unit segments;

[0092] The third unit segment is rotatably mounted on the top of the tank 14, and the ear plate 37 of the third unit segment is connected to the ear plate at the bottom end of the second unit segment via a pin. The tank 14 is slid along the slide rail 13 toward the lifting frame 4, and the lifting frame 4 simultaneously lifts the first unit segment upward, so that the top end of the third unit segment is spliced to the bottom end of the second unit segment, thereby fixedly connecting the bottom end of the second unit segment and the top end of the third unit segment;

[0093] An X-shaped support rod 33 is fixedly connected between two adjacent third unit segments;

[0094] The fourth unit segment is rotatably mounted on the top of the tank 14, and the ear plate 37 of the fourth unit segment is connected to the ear plate at the bottom end of the third unit segment via a pin. The tank 14 is slid along the slide rail 13 toward the lifting frame 4, and the lifting frame 4 simultaneously lifts the first unit segment upward, so that the top end of the fourth unit segment is spliced to the bottom end of the third unit segment, thereby fixing the top end of the fourth unit segment and the bottom end of the third unit segment;

[0095] An X-shaped support rod 33 is fixedly connected between two adjacent fourth unit segments;

[0096] Fix the overpass 36 between the two crossbeams 35 of the fourth unit section;

[0097] The first unit segment is lifted using the lifting frame 4 so that the distance between the fourth unit segment and the foundation is equal to the height of the arch foot segment 34. The slide and tank are then removed. The arch foot segment 34 is then lifted using the lifting frame and placed between the fourth unit segment and the foundation 11, thereby fixing the top end of the arch foot segment 34 to the bottom end of the fourth unit segment and the bottom end of the arch foot segment 34 to the top end of the foundation 11.

[0098] The corridor 5 is lifted upward by the lifting frame 4 , and then the corridor 5 is fixedly mounted on the connecting seat 311 , and the cover top 51 is lifted upward by the lifting frame 4 and fixed to the top of the corridor 5 .

[0099] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A method for installing an arch structure, characterized in that: The steps include: S1, constructing a plurality of foundations on the ground corresponding to the location where the arch structure is to be installed, and dividing the arch structure into a plurality of unit segments from top to bottom, wherein the first unit segment has one corresponding to the top position of the arch structure, and each of the remaining unit segments has two symmetrically arranged along the symmetry axis of the arch structure; S2, hoist the Nth unit segment, N=1, rotate the top ends of the two N+1th unit segments to connect them to the two bottom ends of the Nth unit segment respectively, then lift the Nth unit segment upward and push the bottom end of the N+1th unit segment in a direction close to the Nth unit segment, so that the N+1th unit segment rotates and is spliced to the bottom of the Nth unit segment, and the N+1th unit segment is placed on the ground, thereby fixing the Nth unit segment and the N+1th unit segment; S3, let N = N + 1, rotate the top of the N + 1th unit segment to connect it to the bottom of the corresponding Nth unit segment, then lift the spliced unit segments upward and push the bottom of the N + 1th unit segment toward the Nth unit segment, so that the N + 1th unit segment rotates and is spliced to the bottom of the Nth unit segment, and the N + 1th unit segment is placed on the ground, thereby fixing the Nth unit segment and the N + 1th unit segment; S4, repeating S3 until all unit segments are spliced together and the bottom end of the lowest unit segment is fixed to the top of the foundation; When installing the unit segment, also include: providing a slide rail, wherein one end of the slide rail is fixed to the top of the foundation and the other end of the slide rail extends away from the foundation; Providing a tank car, and sliding the tank car onto the slide rail; The unit segment is placed on the top of the tank, and the tank is pushed to move along the slide rail toward the foundation, so as to drive the bottom end of the unit segment to move toward the foundation.

2. The method for installing an arch structure according to claim 1, wherein: The bottom of the arch structure has an arch foot section for connecting to the foundation; When all the unit segments are spliced together, lift the spliced unit segments upward until the distance between the bottom end of the lowest unit segment and the foundation is equal to the height of the arch foot segment, then remove the slide rail and the tank, and splice the top end of the arch foot segment to the bottom end of the lowest unit segment and fix the bottom end to the top surface of the foundation.

3. The method for installing an arch structure according to claim 1, wherein: Before lifting the first unit segment, the method further includes: An assembled tire frame and several roadbed boxes are installed at a position on the ground corresponding to the first unit segment. The assembled tire frame is used to support the center position of the first unit segment and the bottom of the first unit segment is placed on the top of the roadbed box.

4. The method for installing an arch structure according to claim 1, wherein: A lug plate is fixed to the side of each unit segment and a pin hole is opened on the lug plate; The ear plate at the top of the N+1th unit segment is fitted to the ear plate at the bottom of the Nth unit segment, and then a pin is inserted into the two pin holes, so that the N+1th unit segment and the Nth unit segment are connected by rotation around the pin.

5. The method for installing an arch structure according to claim 1, wherein: The arch structure includes two U-shaped arches fixedly connected at the top and symmetrically arranged along a vertical plane coinciding with the top of the arch structure, the first unit segment has one corresponding to the top position of the arch structure, and the remaining unit segments are four symmetrically arranged along the vertical plane, and the N+1 unit segment is spliced after the N unit segment, and further includes: Two support rods are fixedly connected between two N+1th unit segments that are oppositely arranged and located on both sides of the vertical plane, and the two support rods cross to form an X shape.

6. The method for installing an arch structure according to claim 5, wherein: The arched structure further includes an overpass provided in the Nth unit section, and further includes: When the Nth unit section is installed, the overpass is installed on the Nth unit section.

7. The method for installing an arch structure according to claim 6, wherein: The top of the arched structure is also provided with a corridor, and further comprises: After all the unit segments are spliced together, the corridor is installed on the top of the first unit segment.

8. The method for installing an arch structure according to claim 1, wherein: Before fixing the foundation on the ground at positions corresponding to the two bottom ends of the arch structure to be installed, the method further includes: Excavate a foundation pit on the ground at a location corresponding to the location where the foundation is to be formed; A steel cage is provided, fixed in the foundation pit and partially protruding from the top of the foundation pit, and concrete is poured at a position corresponding to the steel cage to form the foundation.

9. The method for installing an arch structure according to claim 1, wherein: Also includes: A lifting frame is provided, fixed between two adjacent foundations, and the unit segment is lifted using the lifting frame.

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