A prestressed composite prefabricated arched roof and construction method thereof

Abstract

The present invention provides a prestressed composite prefabricated arched roof and a construction method thereof, which belongs to the technical field of arched roofs, and includes a plurality of prefabricated parts of an arched structure, wherein a detachable connection assembly is provided between adjacent prefabricated parts, and a plurality of embedded parts are provided on opposite end surfaces of adjacent prefabricated parts, and an adjustable limiter is threadedly connected to the embedded parts. The prestressed composite prefabricated arched roof and a construction method thereof, through the cooperation of the connection assembly with the embedded tight and adjustable limiter, adjusts the position state of the prefabricated parts according to the specific conditions on site during the construction process, and effectively improves the flexibility, convenience and efficiency of construction on the basis of improving the sealing performance and stability of the overall structure of the roof, reduces the influence of construction errors and production errors on the construction quality, and also facilitates the repair of the sealing of the roof at a later stage.

Description

Technical Field

[0001] The invention relates to the technical field of arched roofs, in particular to a prestressed laminated prefabricated arched roof and a construction method thereof. Background Art

[0002] Prestressed composite prefabricated arched roof (hereinafter referred to as arched roof) is a kind of building structure that adds prestressing technology to the traditional composite prefabricated arched roof. The arched roof is usually made up of several prefabricated parts of arched structure. The prestressing technology improves the crack resistance and bearing capacity of the prefabricated parts, thereby improving the crack resistance and bearing capacity of the overall roof.

[0003] At present, concrete is generally poured at the joints of the arched roof to tightly combine adjacent prefabricated components together, thereby making the arched roof have high stability and sealing. However, its construction is difficult, the construction efficiency is low, the construction period is long, and the later repair is difficult. Pouring concrete in the arched structure requires precise formwork and support systems, and the pouring process needs to be strictly controlled, otherwise it is easy to affect the pouring quality, and then affect the integrity and sealing of the roof structure. In addition, some arched roofs choose to combine prefabricated components together by combining fasteners and seals, but its overall stability and sealing are difficult to fully meet the use requirements. Summary of the invention

[0004] The present invention provides a prestressed composite prefabricated arched roof and a construction method thereof, so as to solve the problems of great difficulty in arched roof construction, low construction efficiency, long construction period and great difficulty in later repair in the related art.

[0005] The present invention provides a prestressed composite prefabricated arched roof and a construction method thereof. The prestressed composite prefabricated arched roof comprises a plurality of prefabricated parts of an arched structure, the plurality of prefabricated parts are evenly distributed along the axial direction and are all installed on a base body, a detachable connection assembly is arranged between adjacent prefabricated parts, the connection assembly comprises an intermediate body provided with an outer sealing eave and an inner sealing eave detachably connected to the intermediate body, a plurality of bayonet holes are provided on the intermediate body, and a hot-melt sealing body is arranged on the outer sealing eave and the inner sealing eave, and the hot-melt sealing body enables the outer sealing eave to be sealed and connected to two corresponding adjacent prefabricated parts from the outside, and the inner sealing eave to be sealed and connected to two corresponding adjacent prefabricated parts from the inside. Sealed together; a number of embedded parts are arranged on the opposite end faces of adjacent prefabricated parts, and the plurality of embedded parts are distributed on the corresponding end faces along the circumference of the prefabricated parts, and the embedded parts on the opposite end faces are staggered with each other, and an adjustable limiter is threadedly connected to the embedded parts, and the bayonet corresponds to the embedded parts one by one, and the bayonet is clamped on the corresponding embedded parts and the intermediate is filled between the adjustable limiter and the corresponding end face; a reinforcement component is arranged on the base, and during the construction process, the reinforcement component preliminarily limits the spacing between adjacent prefabricated parts, and during the installation of the intermediate, the reinforcement component releases the limitation on the prefabricated parts and uniformly limits and fixes the outer sealing eaves and the inner sealing eaves in the subsequent process.

[0006] In one possible implementation, the reinforcement component includes a connecting seat with an inner fastening member fixedly provided at one end and a limiting member 1 fixedly provided at the other end, an outer fastening member is slidably provided on the connecting seat, the outer fastening member is located between the limiting member 1 and the inner fastening member, a unified control member is slidably provided on the base, a plurality of limiting members 2 are provided on the unified control member, the limiting members 2 correspond to the limiting members 1 one by one, and the limiting members 2 are tightly fitted with the limiting member 1 and the corresponding outer fastening member at the same time.

[0007] In one possible implementation, the embedded parts are evenly distributed on the corresponding end faces along the circumference of the preformed parts, the embedded parts on the opposite end faces are staggered in sequence, and the inner side surfaces of the preformed parts are provided with accommodating grooves, the accommodating grooves correspond one-to-one to the adjustable limit parts, and the accommodating grooves on the preformed parts are used to accommodate the adjustable limit parts on the adjacent preformed parts, wherein the control end of the adjustable limit part is an internal hexagonal or external hexagonal structure.

[0008] In a possible implementation, a plurality of accommodating cavities are provided on the contact surface where the outer sealing eaves and the prefabricated component are in close contact, and the accommodating cavities are distributed along the axial direction of the prefabricated component.

[0009] In a possible implementation, a plurality of partition bodies are provided in the accommodating cavity, and the plurality of partition bodies are distributed along the circumference of the preform and divide the accommodating cavity into a plurality of independent units, and the hot-melt sealing bodies are respectively located in the independent units.

[0010] In a possible implementation, a plurality of filling blocks are fixedly connected to the inner sealing eaves. The filling blocks correspond to the receiving grooves one by one and fill the receiving grooves that receive the adjustable limiter.

[0011] A method for constructing a prestressed composite prefabricated arched roof comprises the following steps: S1: producing a prefabricated part with an embedded part on the end face in a factory, and installing an adjustable stopper on the corresponding embedded part, and the adjustable stopper and the end face of the corresponding prefabricated part maintain a preset distance; S2: placing the prefabricated parts in S1 on a base at a preset distance at a construction site; S3: inserting an intermediate body 32 between adjacent prefabricated parts in S2 in a vertically movable state, and the outer sealing eaves are simultaneously fitted with the outer side faces of the adjacent prefabricated parts in S2; then fixing the corresponding inner sealing eaves on the intermediate body, and the inner sealing eaves are simultaneously fitted with the outer side faces of the adjacent prefabricated parts in S2; In S2, the inner side surfaces of adjacent prefabricated parts are fitted together; S4: the tight state of the prefabricated parts and the intermediate body is adjusted by rotating the adjustable limiter as needed, so that the end face of the prefabricated part and the intermediate body are tightly fitted together, and after several prefabricated parts 1 are tightly fitted together with the corresponding intermediate bodies, the prefabricated parts are fixedly connected to the base body, S5: the hot-melt sealing body on the outer sealing eaves and the inner sealing eaves is heated from the inner and outer sides respectively by a heating device, so that the outer sealing eaves is sealed and connected to the adjacent prefabricated parts from the outside, and the inner sealing eaves is sealed and connected to the adjacent prefabricated parts 1 from the inside.

[0012] The above one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects: 1. According to a prestressed composite prefabricated arched roof and a construction method thereof provided in an embodiment of the present invention, the connecting components are coordinated with the embedded and adjustable limit parts. During the construction process, the position status of the prefabricated parts is adjusted according to the specific conditions on site. On the basis of improving the sealing performance and stability of the overall structure of the roof, the flexibility, convenience and efficiency of the construction are effectively improved, and the influence of construction errors and production errors on the construction quality is reduced. In addition, it is also convenient to repair the sealing of the roof at a later time.

[0013] 2. According to an embodiment of the present invention, a prestressed composite prefabricated arched roof and a construction method thereof are provided, wherein a receiving groove is provided on the prefabricated part for accommodating an adjustable limiter to shorten the distance between adjacent prefabricated parts and improve the stability and load capacity of the roof.

[0014] 3. A prestressed composite prefabricated arched roof and a construction method thereof provided according to an embodiment of the present invention further improve the sealing performance of the roof through the cooperation between the accommodating cavity and the partition body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a prestressed composite prefabricated arched roof provided in an embodiment of the present invention.

[0016] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0017] Figure 3 yes Figure 1 Enlarged view of point B in the middle.

[0018] Figure 4 It is a structural schematic diagram of a prestressed composite prefabricated arched roof connection assembly provided in an embodiment of the present invention.

[0019] Figure 5 It is a structural schematic diagram of a prestressed composite prefabricated arched roof and an intermediate body, an outer sealing eave and a buckle provided in an embodiment of the present invention.

[0020] Figure 6 It is a schematic structural diagram of a housing cavity and a partition body of a prestressed composite prefabricated arched roof provided in an embodiment of the present invention.

[0021] Figure 7 It is a structural schematic diagram of a prestressed composite prefabricated arched roof embedded component, an adjustable limit component and a bayonet provided in an embodiment of the present invention.

[0022] Figure 8 It is a structural schematic diagram of a reinforcement component of a prestressed composite prefabricated arched roof provided in an embodiment of the present invention.

[0023] In the figure: 1. prefabricated part; 2. base body; 3. connection assembly; 31. outer sealing eaves; 32. intermediate body; 33. inner sealing eaves; 34. bayonet; 35. hot-melt sealing body; 36. filling block; 4. embedded part; 5. adjustable limiter; 6. reinforcement assembly; 61. inner fastening part; 62. limiter 1; 63. connecting seat; 64. outer fastening part; 65. unified control part; 66. limiter 2; 7. receiving groove; 8. receiving cavity; 9. partition body. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described below, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0025] See also Figure 1 and Figure 4 A prestressed composite prefabricated arched roof comprises a plurality of prefabricated parts 1 of an arched structure, wherein the plurality of prefabricated parts 1 are evenly distributed along the axial direction and are all installed on a base 2, such as Figure 1As shown, the prefabricated parts 1 are evenly distributed from front to back, and a detachable connecting assembly 3 is arranged between the front and rear adjacent prefabricated parts 1. The connecting assembly 3 includes an intermediate body 32 on which an outer sealing eave 31 is fixedly arranged, and an inner sealing eave 33 detachably connected to the intermediate body 32. Hot-melt sealing bodies 35 are arranged on the outer sealing eave 31 and the inner sealing eave 33. The hot-melt sealing bodies 35 make the outer sealing eave 31 sealed and connected to the two corresponding adjacent prefabricated parts 1 from the outside, and the inner sealing eave 33 sealed and connected to the two corresponding adjacent prefabricated parts 1 from the inside. By sealing on both the inside and outside, the sealing of the connection between the adjacent prefabricated parts 1 is improved, thereby improving the sealing of the entire roof.

[0026] See also Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 7 , a plurality of embedded parts 4 are arranged on opposite end faces of adjacent prefabricated parts 1, and the plurality of embedded parts 4 are evenly distributed on the corresponding end faces along the circumference of the prefabricated parts 1, and the embedded parts 4 on the opposite end faces are staggered in sequence, and the embedded parts 4 are threadedly connected with adjustable limiters 5, and a plurality of bayonet holes 34 are opened on the intermediate body 32, and the bayonet holes 34 correspond to the embedded parts 4 one by one, and the bayonet holes 34 are clamped on the corresponding embedded parts 4 so that the intermediate body 32 is filled between the adjustable limiter 5 and the corresponding end face, as shown in FIG. Figure 4 As shown, the bayonet 34 is stuck on the embedded part 4, and the adjustable limiter 5 on the embedded part 4 and the corresponding prefabricated part 1 are respectively located on both sides of the intermediate body 32. At this time, the tightness between the intermediate body 32 and the prefabricated part 1 can be adjusted by rotating the adjustable limiter 5 to ensure that the intermediate body 32 and the end face of the prefabricated part 1 are in a tightly attached state, which is beneficial to improve the sealing and stability of the overall structure. The adjacent prefabricated parts 1 form an adjustable interlocking connection state through the intermediate body 32 and the adjustable limiter 5. The spacing between adjacent prefabricated parts 1 can be adjusted according to the specific conditions on site during the construction process to ensure that the corresponding prefabricated parts 1 are tightly connected with the intermediate body 32, thereby ensuring the stability and reliability of the overall structure, improving the overall quality of the roof, and processing the production errors and construction errors according to the actual conditions during the construction process to improve the flexibility and convenience of the roof construction process.

[0027] See also Figure 1 , Figure 4 and Figure 5The openings of the bayonet 34 are all facing downward, the intermediate body 32 is inserted between adjacent prefabricated parts 1 in a vertical downward movement, and the bayonet 34 is just stuck on the corresponding embedded part 4, which is not only convenient for installation, but also in the subsequent inspection and maintenance process, the intermediate body 32 and the inner sealing eaves 33 can be removed separately, and the hot-melt sealing body 35 can be replenished, and then the intermediate body 32 and the inner sealing eaves 33 can be installed, and the outer sealing eaves 31 and the inner sealing eaves 33 can establish a new sealing state with the prefabricated part 1 to repair the sealing of the roof.

[0028] See also Figure 1 and Figure 4 The inner sealing eave 33 is detachably fixedly connected to the intermediate body 32 by fasteners. A plurality of accommodating cavities 8 are arranged on the contact surface of the outer sealing eave 31 which is closely attached to the preform 1. The accommodating cavities 8 are distributed along the axial direction of the preform 1. The hot-melt sealing body 35 is installed in the accommodating cavities 8. Figure 4 As shown, after the intermediate body 32 is fixedly connected to the inner sealing eaves 33, the outer sealing eaves 31 is tightly fitted with the outer peripheral surfaces of the two adjacent prefabricated parts 1 at the same time, and the hot-melt sealing body 35 is subsequently melted by a heating device. The melted hot-melt sealing body 35 will flow and fully fill the connecting seam between the outer sealing eaves 31 and the prefabricated parts 1, and effectively seal the connecting seam. By setting up multiple accommodating cavities 8, the adequacy and effectiveness of the sealing are ensured, thereby ensuring the reliability and stability of the sealing between the outer sealing eaves 31 and the prefabricated parts 1. The hot-melt sealing body 35 on the inner sealing eaves 33 can be directly fixedly connected to the inner sealing eaves 33 and located between the inner sealing eaves 33 and the corresponding prefabricated parts 1. Subsequently, the hot-melt sealing body 35 is directly heated by a heating device to melt the hot-melt sealing body 35 to seal the connecting seam between the inner sealing eaves 33 and the prefabricated parts 1, thereby forming a secondary sealing area to further improve the sealing performance of the roof.

[0029] See also Figure 1 , Figure 4 and Figure 6 A plurality of partition bodies 9 are arranged in the accommodating cavity 8, and the plurality of partition bodies 9 are distributed along the circumference of the preform 1, such as Figure 6 As shown, the partition body 9 is a plate-like structure, which divides the accommodating cavity 8 into several independent units. The hot-melt sealing body 35 is respectively located in the independent units. The flow range of the hot-melt sealing body 35 in the hot-melt state is limited by the independent units to inhibit the flow of the hot-melt sealing body 35, so that the hot-melt sealing body 35 can fully and evenly seal the gap between the external sealing eaves 31 and the prefabricated component 1, thereby further improving the sealing performance of the roof.

[0030] See also Figure 1 , Figure 2 and Figure 4, the inner side of each preform 1 is provided with a receiving groove 7, the receiving groove 7 corresponds to the adjustable limiter 5 one by one, and the receiving groove 7 on the preform 1 is used to receive the adjustable limiter 5 on the adjacent preform 1, such as Figure 4 As shown, the adjustable stopper 5 is located in the corresponding receiving groove 7, thereby fully reducing the gap between adjacent prefabricated parts 1 and improving the firmness of the overall structure. Secondly, a plurality of filling blocks 36 are fixedly connected to the inner sealing eaves 33. The filling blocks 36 correspond to the receiving grooves 7 one by one and fill the receiving grooves 7 containing the adjustable stopper 5. Figure 4 As shown, after the inner sealing eaves 33 is fixedly connected to the intermediate body 32, the filling block 36 is inserted into the corresponding receiving groove 7. On the one hand, the adjustable limit member 5 in the receiving groove 7 is clamped and limited, and on the other hand, the free area of ​​the receiving groove 7 is filled, which is beneficial to improve the overall stability to a certain extent. Among them, the control end of the adjustable limit member 5 is an internal hexagonal or external hexagonal structure, which is convenient for controlling the rotation of the adjustable limit member 5 in a limited space, and then it is beneficial to reduce the space of the receiving groove 7 and improve the stability and bearing capacity of the overall structure of the prefabricated part 1.

[0031] See also Figure 1 , Figure 3 and Figure 8 A reinforcement component 6 is provided on the base 2, and the reinforcement component 6 includes a connection seat 63 with an inner fastening member 61 fixedly provided at one end and a limiting member 62 fixedly provided at the other end. The connection seat 63 is fixedly installed on the base 2, and an outer fastening member 64 is slidably provided on the connection seat 63, and the outer fastening member 64 is located between the limiting member 62 and the inner fastening member 61. A unified control member 65 is slidably provided on the base 2, and a plurality of limiting members 66 are provided on the unified control member 65. The limiting members 66 correspond to the limiting members 62 one by one, and the limiting members 66 are tightly fitted with the limiting members 62 and the corresponding outer fastening members 64 at the same time. During the construction process, in the initial process of placing the prefabricated component 1, the outer fastening member 64 is slid, and the outer fastening member 64 is used to Part 64 limits the prefabricated part 1 from the end face, so that the prefabricated part 1 is placed quickly and accurately in the preset position, which is beneficial to improving the convenience of the subsequent assembly process. In the process of inserting the intermediate body 32, the outer fastening part 64 is moved to make it located on the outside of the outer sealing eaves 31. Then the unified control part 65 controls the movement of the limiting part 2 66 thereon, so that the limiting part 2 66 is tightly inserted between the limiting part 1 62 and the corresponding outer fastening part 64, thereby limiting the outer sealing eaves 31, the intermediate body 32 and the inner sealing eaves 33, thereby improving the stability of the overall structure. Among them, the unified control part 65 is a sliding rod rotatably provided with a threaded control end, the sliding rod is connected to the base body 2 by sliding back and forth, and the threaded control end is threadedly connected to the base body 2.

[0032] A construction method for a prestressed composite prefabricated arched roof comprises the following steps: S1: a prefabricated part 1 having an embedded part 4 on its end face is produced in a factory, and an adjustable stopper 5 is installed on the corresponding embedded part 4, and the adjustable stopper 5 maintains a preset distance with the end face of the corresponding prefabricated part 1; S2: the prefabricated part 1 in S1 is placed on a base 2 at a preset distance at the construction site; S3: an intermediate body 32 is inserted between adjacent prefabricated parts 1 in S2 in a vertically movable state, and an outer sealing eave 31 is simultaneously fitted with the outer side face of the adjacent prefabricated part 1 in S2; then, the corresponding inner sealing eave 33 is fixedly connected to the intermediate body 32 by fasteners (such as bolts), and the inner sealing eave 33 is simultaneously fitted with the inner side face of the adjacent prefabricated part 1 in S2; S4: the tight state of the prefabricated part 1 and the intermediate body 32 is adjusted by rotating the adjustable stopper 5 as needed, so that the end face of the prefabricated part 1 is tightly fitted with the intermediate body 32; S5: a heating device is used to heat the outer sealing eave 31 from both the inner and outer sides, respectively. The hot-melt sealing body 35 on the sealing eaves 31 and the inner sealing eaves 33 is heated so that the outer sealing eaves 31 is sealed and connected with the adjacent prefabricated parts 1 from the outside, and the inner sealing eaves 33 is sealed and connected with the adjacent prefabricated parts 1 from the inside. After several prefabricated parts 1 are tightly fitted with the corresponding intermediate bodies 32, the prefabricated parts 1 are fixedly installed on the base 2. Here, the connection between the prefabricated parts 1 and the base 2 can be selected according to the actual situation. For example, the prefabricated parts 1 and the base 2 are fixedly connected together by concrete pouring. Since the connection between the prefabricated parts 1 and the base 2 is a plane, the pouring difficulty is relatively low, which is conducive to reducing the construction difficulty and improving the firmness of the overall structure. Secondly, the inner sealing eaves 33 can be fixedly connected with the outer sealing eaves 31 and the base 2 by fasteners, so as to further improve the stability of the overall structure, and the overall sealing performance can be improved by setting seals between the inner sealing eaves 33, the outer sealing eaves 31 and the base 2.

[0033] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0034] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, an integral connection, or a sliding connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A prestressed composite prefabricated arched roof, characterized in that: It comprises a plurality of prefabricated parts (1) of an arched structure, wherein the plurality of prefabricated parts (1) are evenly distributed along the axial direction and are all mounted on a base (2); A detachable connection assembly (3) is provided between adjacent prefabricated parts (1), the connection assembly (3) comprising an intermediate body (32) provided with an outer sealing eave (31) and an inner sealing eave (33) detachably connected to the intermediate body (32), a plurality of bayonet holes (34) are provided on the intermediate body (32), and hot-melt sealing bodies (35) are provided on both the outer sealing eave (31) and the inner sealing eave (33), the hot-melt sealing bodies (35) enable the outer sealing eave (31) to be sealed and connected to the two corresponding adjacent prefabricated parts (1) from the outside, and the inner sealing eave (33) to be sealed and connected to the two corresponding adjacent prefabricated parts (1) from the inside; A plurality of embedded parts (4) are arranged on opposite end faces of adjacent prefabricated parts (1), the plurality of embedded parts (4) are distributed on the corresponding end faces along the circumference of the prefabricated parts (1), and the embedded parts (4) on the opposite end faces are staggered with each other, an adjustable stopper (5) is threadedly connected to the embedded parts (4), the bayonet (34) corresponds to the embedded parts (4) one by one, and the bayonet (34) is clamped on the corresponding embedded part (4) so ​​that the intermediate body (32) is filled between the adjustable stopper (5) and the corresponding end face; A reinforcement component (6) is arranged on the base (2). During the construction process, the reinforcement component (6) preliminarily limits the spacing between adjacent prefabricated parts (1). During the installation process of the intermediate body (32), the reinforcement component (6) releases the limit on the prefabricated parts (1) and uniformly limits and fixes the outer sealing eaves (31) and the inner sealing eaves (33) in the subsequent process. The reinforcing component (6) comprises a connecting seat (63) having an inner fastening member (61) fixedly arranged at one end and a limiting member (62) fixedly arranged at the other end; an outer fastening member (64) is slidably arranged on the connecting seat (63); the outer fastening member (64) is located between the limiting member (62) and the inner fastening member (61); a unified control member (65) is slidably arranged on the base (2); a plurality of limiting members (66) are arranged on the unified control member (65); the limiting members (66) correspond to the limiting members (62) one by one, and the limiting members (66) are tightly fitted with the limiting members (62) and the corresponding outer fastening members (64) at the same time.

2. The prestressed composite prefabricated arched roof according to claim 1, characterized in that: The embedded parts (4) are evenly distributed on the corresponding end faces along the circumference of the preform (1), and the embedded parts (4) on the opposite end faces are staggered in sequence. The inner side surfaces of the preform (1) are each provided with a receiving groove (7), the receiving groove (7) corresponds to the adjustable stopper (5) one by one, and the receiving groove (7) on the preform (1) is used to receive the adjustable stopper (5) on the adjacent preform (1).

3. The prestressed composite prefabricated arched roof according to claim 1, characterized in that: A plurality of accommodating cavities (8) are provided on the contact surface where the outer sealing eave (31) is tightly in contact with the preform (1), and the accommodating cavities (8) are distributed along the axial direction of the preform (1).

4. The prestressed composite prefabricated arched roof according to claim 3, characterized in that: A plurality of partition bodies (9) are arranged in the accommodating cavity (8), and the plurality of partition bodies (9) are distributed along the circumference of the preform (1) and divide the accommodating cavity (8) into a plurality of independent units, and the hot-melt sealing bodies (35) are respectively located in the independent units.

5. The prestressed composite prefabricated arched roof according to claim 2, characterized in that: A plurality of filling blocks (36) are fixedly connected to the inner sealing eave (33), and the filling blocks (36) correspond to the receiving grooves (7) one by one and fill the receiving grooves (7) receiving the adjustable limiter (5).

6. A prestressed composite prefabricated arched roof according to claim 2 or 5, characterized in that: The control end of the adjustable limiter (5) is an inner hexagonal or outer hexagonal structure.

7. A method for constructing a prestressed composite prefabricated arched roof, characterized in that: The method for processing a prestressed composite prefabricated arched roof as claimed in claim 1 comprises the following steps: S1: a prefabricated component (1) having an embedded component (4) on its end face is produced in a factory, and an adjustable stopper (5) is installed on the corresponding embedded component (4) so ​​that the adjustable stopper (5) and the end face of the corresponding prefabricated component (1) maintain a preset distance; S2: placing the prefabricated parts (1) in S1 on a base (2) at a preset interval at the construction site; S3: inserting the intermediate body (32) between adjacent prefabricated parts (1) in S2 in a vertically movable state, and the outer sealing eaves (31) are simultaneously in contact with the outer side surfaces of the adjacent prefabricated parts (1) in S2, and then fixing the corresponding inner sealing eaves (33) on the intermediate body (32), and the inner sealing eaves (33) are simultaneously in contact with the inner side surfaces of the adjacent prefabricated parts (1) in S2; S4: rotating the adjustable stopper (5) as required to adjust the tightness of the preform (1) and the intermediate body (32), so that the end surface of the preform (1) and the intermediate body (32) are tightly fitted together; S5: Using a heating device, the hot-melt sealing body (35) on the outer sealing eave (31) and the inner sealing eave (33) are heated from both inside and outside, so that the outer sealing eave (31) is sealed and connected to the adjacent prefabricated part (1) from the outside, and the inner sealing eave (33) is sealed and connected to the adjacent prefabricated part (1) from the inside.

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