A detachable arch frame and method of use

Abstract

The application discloses a detachable arch frame and arch foot and a use method thereof, and relates to the technical field of highway and urban road bridge construction. The detachable arch frame and arch foot comprises a single-end double-pin-hole ear plate full-thread screw, a two-way threaded connection sleeve, a triangular truss arch foot, an arch foot foundation pressure bearing piece, a support foundation hinge pin piece, a long single-end single-pin-hole ear plate full-thread screw, a short single-end single-pin-hole ear plate full-thread screw and a foundation embedded bolt. The detachable arch frame and arch foot and the use method thereof are characterized in that the double-pin-hole structure of the single-end double-pin-hole ear plate full-thread screw can form a stable triangular truss structure in cooperation with a connecting rod piece and the support foundation hinge pin piece, and can realize the consolidation of arch foot constraint and the hinge connection system conversion at any time in different construction environments and working conditions. Meanwhile, the support reaction force members such as the arch foot foundation pressure bearing piece and the support foundation hinge pin piece are connected by using embedded bolts or embedded threaded sleeves, so that the installation and disassembly are facilitated, the sleeves can be repeatedly used, and the convenience and economy are more excellent, especially on a multi-hole bridge.

Description

Technical Field

[0001] This invention relates to the field of highway and urban road bridge construction technology, specifically to a detachable arch frame and its usage method. Background Technology

[0002] For small- to medium-span cast-in-place reinforced concrete / prestressed concrete structures with an arched, parabolic, or catenary curve at the bottom of the superstructure, scaffolding or arch construction is often used. Arch construction does not have the foundation support issue of scaffolding construction, making it more suitable for complex and variable on-site construction conditions.

[0003] The main types of truss arch frames used in construction include Bailey beam-panel assembled arch frames, 64 military beam-panel assembled arch frames, adjustable steel arch frames, and adjustable triangular truss-panel arch frames.

[0004] Conventional truss arch frame arch foot projects mostly use embedded or semi-embedded types, which have problems such as difficulty in adjustment and positioning, the need for secondary pouring and surface treatment after destructive cutting and dismantling, inability to easily convert the system to consolidation and hinge according to the needs of the construction stage, low component reuse rate, poor versatility and inability to adapt to arch frame size adjustments. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a detachable arch frame foot and its usage method, which solves the problems of conventional truss arch frame foot engineering, which mostly uses embedded or semi-embedded types, resulting in difficulties in adjustment and positioning, the need for secondary pouring and surface treatment after destructive cutting and dismantling, the inability to easily convert the system to consolidation and hinge according to the needs of the construction stage, low component reuse rate, poor versatility and inability to adapt to arch frame size adjustments.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the present invention is implemented through the following technical solution: a detachable arch foot, comprising a single-end double-pin hole ear plate fully threaded screw rod, a bidirectional threaded connecting sleeve, a triangular truss arch foot, an arch foot foundation bearing component, a support foundation hinge pin component, a long single-end single-pin hole ear plate fully threaded screw rod, a short single-end single-pin hole ear plate fully threaded screw rod, and anchor bolts.

[0009] The single-end double pin hole ear plate fully threaded screw is a screw with two sets of pin hole ear plates fixed at one end, which can simultaneously make two different bolted connections. The bidirectional threaded connecting sleeve is a sleeve with internal threads arranged clockwise and counterclockwise at both ends.

[0010] The triangular truss arch foot is a triangular-like component composed of a stiffened steel pipe and an arch foot hinged structure. The triangular truss arch foot hinged structure is composed of a large-diameter steel pipe with a circular pressure-bearing steel plate welded inside and corresponding stiffening. The triangular truss arch foot foundation pressure-bearing component is composed of a steel plate arc surface with a diameter slightly larger than the arch foot hinged steel pipe and its pressure-bearing expansion stiffening component.

[0011] The pin hole lugs are matched with male and female pin hole lugs according to the spliced ​​joints. The two ends of the bidirectional threaded connecting sleeve can be provided with screw fastening limit holes that constrain the rotation of the screw and penetrate the sleeve wall thickness. The screw thread may not be continuous due to processing and other factors.

[0012] A method for using a detachable arch frame foot, including the aforementioned detachable arch frame foot, is as follows:

[0013] S1. Construct arch seats or piers, and arrange pre-embedded bolts according to the plan and calculation. To ensure accurate positioning and flatness, perforated thin steel plates can be used for pre-embedded bolt / threaded sleeve process.

[0014] S2. After the arch seat or pier strength and elastic modulus meet the requirements, first flatten the connection surface, and then use temporary support or temporary positioning to pre-tighten the high-strength bolts of the arch foot foundation bearing components and the support foundation hinge pin components.

[0015] S3. With the assistance of piers / supports / cables, the arch frame segment is hoisted to the arch foot foundation bearing component. On the basis of the hinged connection between the triangular truss arch foot and the arch foot foundation bearing component, the elevation of the arch frame is adjusted, and the arch frame and the arch foot foundation support component are connected by adjusting the connecting rod using the two-way threaded connecting sleeve to achieve the initial temporary fixed connection of the arch foot.

[0016] S4. After the arch frame is closed, the temporary fixing of the arch hinge is released. With the assistance of temporary supports or brackets, the arch frame curve can still be finely adjusted to the theoretical design value through the bidirectional threaded connection sleeve.

[0017] S5. The arch frame completes the upper pouring construction in the double-hinged arch mode;

[0018] S6. First, use temporary supports / braces / cables to dismantle the arch frame in sections, and then dismantle the arch feet. The pre-embedded bolts / threaded sleeves can be retained or leveled as needed.

[0019] Preferably, the bidirectional threaded connecting sleeve can change the relative distance between the connecting screws at both ends by rotating clockwise or counterclockwise.

[0020] Preferably, the bearing components of the triangular truss arch foot foundation and the hinge pins of the supporting foundation are all connected to the foundation / pier / arch seat by pre-embedded bolts during construction.

[0021] Preferably, the bidirectional threaded connecting sleeve may also be provided with multiple length adjustment locking holes / screw holes in the middle, and the bidirectional threaded connecting sleeve limiting holes and length adjustment holes may also be replaced by other limiting devices.

[0022] Preferably, the anchor bolts can also be replaced by embedded internal threaded sleeves that are compatible with high-strength bolts.

[0023] (III) Beneficial Effects

[0024] This invention provides a detachable arch frame foot and its usage method. It has the following beneficial effects:

[0025] This detachable arch foot and its usage method utilize a double-pin hole structure with a single-end double-pin hole lug plate and fully threaded bolts to form a stable triangular truss structure in conjunction with connecting rods and supporting foundation hinge pins. Simultaneously, the supporting reaction components, such as the arch foot foundation bearing components and supporting foundation hinge pins, are connected using pre-embedded bolts or pre-embedded threaded sleeves, facilitating installation and disassembly. The components are reusable, offering superior convenience and economy, especially in multi-span bridges. Furthermore, the adjustable connecting rods between the upper and lower chord nodes of the arch foot and the supporting foundation hinge pins allow for the conversion of the fixed and hinged systems for arch foot constraints under different construction environments and working conditions. This significantly enhances the stability coefficient of the arch frame during hoisting and cantilever assembly, and further strengthens the safety and stability of the constructed arch frame in wind, earthquake, and flood resistance. Furthermore, due to its versatility and adjustability, the arch frames and arch feet applicable to this invention are not limited to standard 321 Bailey beam arch frames. They can also be used for reinforced Bailey beams, 200-type Bailey beams, or various similar prefabricated assembled truss beam arch frames. It has advantages such as a large adjustment range, rapid positioning and adjustment, convenient assembly and disassembly, meeting the system conversion needs of various construction conditions, high component reuse rate, and good versatility. It can also realize the conversion of the fixed and hinged system of arch foot constraint at any time in different construction environments and conditions. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the central support pier method arch frame and arch foot elevation layout of the 62m span arch ring in the continuous arch system.

[0027] Figure 2 yes Figure 1 A detailed schematic diagram of the partial connection of the arch frame and arch foot of the present invention.

[0028] Figure 3 , 4 Figures 5 and 6 are installation diagrams of different inclination angles or foundation forms of the arch frame foot of the present invention.

[0029] Among them: 1. triangular truss arch foot, 2. arch foot foundation bearing component, 3. support foundation hinge pin component, 4. single-end double pin hole ear plate fully threaded screw, 5. bidirectional threaded connecting sleeve, 6. long single-end single pin hole ear plate fully threaded screw, 7. short single-end single pin hole ear plate fully threaded screw, 8. anchor bolts. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Please see Figure 1-5 The present invention provides a technical solution: a detachable arch foot, including a single-end double-pin hole ear plate fully threaded screw rod 4, a two-way threaded connecting sleeve 5, a triangular truss arch foot 1, an arch foot foundation bearing component 2, a support foundation hinge pin component 3, a long single-end single-pin hole ear plate fully threaded screw rod 6, a short single-end single-pin hole ear plate fully threaded screw rod 7, and a pre-embedded anchor bolt 8.

[0032] The single-end double pin hole ear plate fully threaded screw 4 has two sets of pin hole ear plates fixed at one end of the screw, which can simultaneously make two different bolted connections. The bidirectional threaded connection sleeve 5 is a sleeve with internal threads arranged clockwise and counterclockwise at both ends.

[0033] The triangular truss arch foot 1 is a triangular-like component composed of stiffened steel pipes and a hinged structure of the arch foot. The hinged structure of the triangular truss arch foot 1 consists of a large-diameter steel pipe with a circular bearing steel plate welded inside and corresponding stiffening. The foundation bearing component of the triangular truss arch foot 1 is composed of a steel plate arc surface with a diameter slightly larger than the hinged steel pipe of the arch foot and its bearing expansion stiffening component.

[0034] The pin hole ear plate is matched with the male and female pin hole ear plate according to the splicing joint. The two ends of the bidirectional threaded connection sleeve can be provided with screw fastening limit holes that penetrate the sleeve wall thickness to constrain the rotation of the screw. The screw thread may not be continuous due to processing and other factors.

[0035] Among them, the bidirectional threaded connecting sleeve 5 can change the relative distance between the connecting screws at both ends by rotating clockwise or counterclockwise;

[0036] The foundation bearing components and supporting foundation hinge pins of the triangular truss arch foot 1 are all bolted to the foundation / pier / arch seat using pre-embedded bolts during construction.

[0037] The bidirectional threaded connecting sleeve 5 may also be provided with multiple length adjustment locking holes / screw holes in the middle. The limiting hole and length adjustment hole of the bidirectional threaded connecting sleeve 5 may also be replaced by other limiting devices.

[0038] The anchor bolt 8 can also be replaced by an embedded internal thread sleeve that matches the high-strength bolt.

[0039] A method for using a detachable arch frame arch foot, including the aforementioned detachable arch frame arch foot, is as follows:

[0040] S1. Construct arch seats or piers, and arrange pre-embedded bolts according to the plan and calculation. To ensure accurate positioning and flatness, perforated thin steel plates can be used for pre-embedded bolt / threaded sleeve process.

[0041] S2. After the arch seat or pier strength and elastic modulus meet the requirements, first flatten the connection surface, and then use temporary support or temporary positioning to pre-tighten the high-strength bolts of the arch foot foundation bearing components and the support foundation hinge pin components.

[0042] S3. With the assistance of piers / supports / cables, the arch frame segment is hoisted to the arch foot foundation bearing component. On the basis of the hinged connection between the triangular truss arch foot and the arch foot foundation bearing component, the elevation of the arch frame is adjusted, and the arch frame and the arch foot foundation support component are connected by adjusting the connecting rod using the two-way threaded connecting sleeve to achieve the initial temporary fixed connection of the arch foot.

[0043] S4. After the arch frame is closed, the temporary fixing of the arch hinge is released. With the assistance of temporary supports or brackets, the arch frame curve can still be finely adjusted to the theoretical design value through the bidirectional threaded connection sleeve.

[0044] S5. The arch frame completes the upper pouring construction in the double-hinged arch mode;

[0045] S6. First, use temporary supports / braces / cables to dismantle the arch frame in sections, and then dismantle the arch feet. The pre-embedded bolts / threaded sleeves can be retained or leveled as needed.

[0046] Example 1

[0047] like Figure 1 The image shows the Bailey bridge frame arrangement for the 9th main arch ring, with a span of 62m, of a 17-span continuous reinforced concrete sunflower-shaped arch bridge. The main arch ring uses a catenary as the optimal arch axis, with an arch axis coefficient of 2.81.

[0048] In this arch frame design, pre-embedded bolts are used to connect the arch foot components of the arch frame via the arch abutment and pier. A crawler crane on a steel trestle bridge assembles the two pre-assembled half-sections of the Bailey arch frame, one for each pile number. After the arch frame is positioned on the arch hinge and temporary supports, it is closed, and a transverse distribution beam is installed. By adjusting the length of the customized Bailey frame threaded telescopic connecting rods and setting a suitable pre-camber, the arch hinge fixing and temporary support are released, forming a double-hinged arch frame. Then, longitudinal I-beam ribs and bamboo plywood bottom formwork are erected on the transverse distribution beam for the phased pouring of the arch ring concrete.

[0049] After the arch ring is poured, a lifting beam and temporary supports are installed on the rigid arch ring. The arch frame and arch top members are then removed. Under protective measures, the arch frame can be vertically rotated and dismantled unit by unit. Finally, the arch foot components secured with embedded bolts and the temporary steel pipe supports on the water are removed. Each component is transported to the next construction arch connection work surface for reassembly and reuse.

[0050] Example 2

[0051] like Figure 3 , Figure 4 , Figure 5 The diagram shows the installation of the arch frame with different inclination angles or foundation shapes.

[0052] Clearly, the detachable arch frame and arch foot of this invention can accommodate horizontal angles ranging from approximately 20° to 60°, essentially covering the needs of most existing bridge engineering structures. Furthermore, this arch frame and arch hinge structure can be installed on both low arch bases and high piers.

[0053] This invention utilizes a single-end double-pin-hole lug plate with a fully threaded screw to form a stable triangular truss structure, which can be combined with connecting rods and supporting foundation hinge pins. Simultaneously, the arch foot foundation bearing components and supporting foundation hinge pins, as well as other supporting reaction components, are connected using pre-embedded bolts or threaded sleeves, facilitating installation and disassembly. The components are reusable, offering superior convenience and economy, especially in multi-span bridges. Furthermore, the adjustable connecting rods between the upper and lower chord nodes of the arch foot and the supporting foundation hinge pins allow for the conversion of the consolidation and hinged system for arch foot constraints in different construction environments and working conditions, greatly enhancing the stability coefficient of the arch frame during hoisting and cantilever assembly, and further improving the safety and stability of the constructed arch frame in wind, earthquake, and flood resistance. In addition, due to its versatility and adjustability, this invention is applicable not only to standard 321 Bailey beam arch frames but also to reinforced Bailey beams, 200-type Bailey beams, or similar prefabricated assembled truss beam arch frames.

[0054] Therefore, the detachable arch frame arch foot proposed in this invention has advantages such as a large adjustment range, rapid positioning and adjustment, convenient assembly and disassembly, meeting the system conversion needs of various construction conditions, high component reuse rate, and good versatility.

[0055] In summary, this detachable arch foot and its usage method, through the double-pin hole structure of the single-end double-pin hole ear plate and fully threaded bolt, can form a stable triangular truss structure in conjunction with connecting rods and supporting foundation hinge pins. Simultaneously, the supporting reaction components such as the arch foot foundation bearing components and supporting foundation hinge pins are all connected using pre-embedded bolts or pre-embedded threaded sleeves, facilitating installation and disassembly. The kits are reusable, offering superior convenience and economy, especially in multi-span bridges. Furthermore, the adjustable connecting rods between the upper and lower chord nodes of the arch foot and the supporting foundation hinge pins allow for the conversion of the fixed and hinged systems for arch foot constraints under different construction environments and working conditions, greatly enhancing the stability coefficient of the arch frame during hoisting and cantilever assembly, and further improving the safety and stability of the constructed arch frame in wind, earthquake, and flood resistance. Furthermore, due to its versatility and adjustability, the arch frames and arch feet applicable to this invention are not limited to standard 321 Bailey beam arch frames. They can also be used for reinforced Bailey beams, 200-type Bailey beams, or various similar prefabricated assembled truss beam arch frames. It has advantages such as a large adjustment range, rapid positioning and adjustment, convenient assembly and disassembly, meeting the system conversion needs of various construction conditions, high component reuse rate, and good versatility. It can also realize the conversion of the fixed and hinged system of arch foot constraint at any time in different construction environments and conditions.

[0056] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0057] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for using a detachable arch frame arch foot, comprising a detachable arch frame arch foot, including a single-end double-pin hole ear plate fully threaded screw, a bidirectional threaded connecting sleeve, a triangular truss arch foot, an arch foot foundation bearing component, a support foundation hinge pin component, a long single-end single-pin hole ear plate fully threaded screw, a short single-end single-pin hole ear plate fully threaded screw A, a short single-end single-pin hole ear plate fully threaded screw B, and anchor bolts, characterized in that: During the construction of the arch foot, when the construction surface is L-shaped and the top of the L-shape has a slope, a short single-end single-pin hole ear plate fully threaded screw A is provided on the slope through the supporting foundation hinge pin. The section of the short single-end single-pin hole ear plate fully threaded screw A away from the slope is provided with a triangular truss arch foot. The vertical connection surface is provided with an arch foot foundation bearing component. The horizontal connection surface is provided with a long single-end single-pin hole ear plate fully threaded screw through the supporting foundation hinge pin. The top of the long single-end single-pin hole ear plate fully threaded screw is provided with a single-end double-pin hole ear. The single-ended double-pin-hole ear plate threaded screw has an end away from the long single-ended single-pin-hole ear plate threaded screw connected to the arch foot foundation bearing component and equipped with a short single-ended single-pin-hole ear plate threaded screw B. The end of the short single-ended single-pin-hole ear plate threaded screw B away from the single-ended double-pin-hole ear plate threaded screw is connected to the triangular truss arch foot. The short single-ended single-pin-hole ear plate threaded screw A, the short single-ended single-pin-hole ear plate threaded screw B, and the long single-ended single-pin-hole ear plate threaded screw are all equipped with bidirectional threaded connecting sleeves. During the construction of the arch foot, when the construction surface is vertical and there is no angle, the construction surface is fixedly connected from top to bottom with a short single-end single-pin hole ear plate fully threaded screw A, an arch foot foundation bearing component, and a long single-end single-pin hole ear plate fully threaded screw. The arch foot foundation bearing component is equipped with a triangular truss arch foot. Both the short single-end single-pin hole ear plate fully threaded screw A and the long single-end single-pin hole ear plate fully threaded screw A are fixed relative to the connection surface via supporting foundation hinge pins, and their top ends are fixedly connected to the triangular truss arch foot. A bidirectional threaded connecting sleeve is fitted onto the long single-end single-pin hole ear plate fully threaded screw. A single-end double-pin-hole ear plate fully threaded screw is movably provided at the top of the fully threaded screw. A short single-end single-pin-hole ear plate fully threaded screw B is movably provided on the single-end double-pin-hole ear plate fully threaded screw, and the single-end double-pin-hole ear plate fully threaded screw is provided at the top of the short single-end single-pin-hole ear plate fully threaded screw B. The bottom and top ends of the short single-end single-pin-hole ear plate fully threaded screw B are respectively connected to the arch foot foundation bearing component and the triangular truss arch foot. A bidirectional threaded connecting sleeve is provided on the short single-end single-pin-hole ear plate fully threaded screw A, the short single-end single-pin-hole ear plate fully threaded screw B, and the long single-end single-pin-hole ear plate fully threaded screw. During the construction of the arch foot, when the construction surface is L-shaped and there is no sloping top, short single-end single-pin hole ear plate fully threaded bolt A and arch foot foundation bearing components are sequentially installed from top to bottom on the vertical connection surface. Long single-end single-pin hole ear plate fully threaded bolts are installed on the horizontal connection surface. Both the short single-end single-pin hole ear plate fully threaded bolt A and the long single-end single-pin hole ear plate fully threaded bolt are fixed relative to the connection surface by supporting foundation hinge pins. A triangular truss arch foot is installed at the end of the short single-end single-pin hole ear plate fully threaded bolt A away from the connection surface, and a triangular truss arch foot is installed at the end of the long single-end single-pin hole ear plate fully threaded bolt away from the connection surface. There is a single-end double-pin-hole ear plate fully threaded screw, which is connected to a short single-end single-pin-hole ear plate fully threaded screw B. The long single-end single-pin-hole ear plate fully threaded screw is connected to the top end of the short single-end single-pin-hole ear plate fully threaded screw B. The bottom end of the short single-end single-pin-hole ear plate fully threaded screw B is fixed relative to the arch foot foundation bearing component, and the top end of the short single-end single-pin-hole ear plate fully threaded screw B is fixed relative to the triangular truss arch foot. The short single-end single-pin-hole ear plate fully threaded screw A, the short single-end single-pin-hole ear plate fully threaded screw B and the long single-end single-pin-hole ear plate fully threaded screw are all equipped with bidirectional threaded connecting sleeves. The single-end double pin hole ear plate fully threaded screw has two sets of pin hole ear plates fixed at one end of the screw. The pin hole ear plates support two sets of different bolted connections. The bidirectional threaded connection sleeve is a sleeve with internal threads arranged clockwise and counterclockwise at both ends. The triangular truss arch foot is a triangular-like component composed of stiffened steel pipes and a hinged structure of the arch foot. The hinged structure of the triangular truss arch foot consists of a large-diameter steel pipe with a circular pressure-bearing steel plate welded inside and corresponding stiffening. The pressure-bearing component of the arch foot foundation is composed of a steel plate arc surface with a diameter slightly larger than that of the hinged steel pipe of the arch foot and its pressure-bearing expansion stiffening component. The pin hole lugs are matched with male and female pin holes according to the spliced ​​joints. The two ends of the bidirectional threaded connecting sleeve are provided with screw fastening limit holes that constrain the rotation of the screw and penetrate the sleeve wall thickness. The screw thread is not continuous due to processing factors.

2. The method of using a detachable arch frame arch foot according to claim 1, characterized in that: The specific operating procedure for using the detachable arch frame arch foot is as follows: S1. Construct arch seats or piers, and arrange anchor bolts according to planning and calculation. To ensure accurate positioning and flatness, use perforated thin steel plates to embed the anchor bolts. S2. After the arch seat or pier strength and elastic modulus meet the requirements, first flatten the connection surface, and then use temporary support or temporary positioning to pre-tighten the high-strength bolts of the arch foot foundation bearing components and the support foundation hinge pin components. S3. With the assistance of temporary supports or brackets, the arch frame segment is hoisted to the arch foot foundation bearing component. On the hinged foundation of the triangular truss arch foot and the arch foot foundation bearing component, the arch frame elevation is adjusted, and the arch frame and the arch foot foundation bearing component are connected by adjusting the connecting rod using a two-way threaded sleeve to achieve the initial temporary fixed connection of the arch foot. S4. After the arch frame is closed, the temporary fixing of the arch hinge is released. With the assistance of temporary supports or brackets, the arch frame curve is still finely adjusted to the theoretical design value through the bidirectional threaded connection sleeve. S5. The arch frame completes the upper pouring construction in the double-hinged arch mode; S6. First, use temporary supports or brackets to dismantle the arch frame in sections, and then dismantle the arch feet. The pre-embedded bolts at the base should be retained or leveled as needed.

3. The method of using a detachable arch frame arch foot according to claim 2, characterized in that: The bidirectional threaded connecting sleeve changes the relative distance between the connecting screws at both ends by rotating clockwise or counterclockwise.

4. The method of using a detachable arch frame arch foot according to claim 2, characterized in that: The bearing components of the arch foot foundation and the hinge pins of the supporting foundation are all connected to the pier / arch seat by pre-embedded anchor bolts.

5. The method of using a detachable arch frame arch foot according to claim 2, characterized in that: The bidirectional threaded connecting sleeve has multiple length adjustment holes in the middle.

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