Fabricated concrete-filled steel tube arch frame with hollow interlayer and construction method of fabricated concrete-filled steel tube arch frame
By adopting prefabricated hollow sandwich structure and layered injection mortar in the steel pipe concrete arch frame, the problems of complex construction and hollowing are solved, and the quality and stability of the arch frame are improved.
Patent Information
- Application Number
- CN202510113569.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-24
- Publication Date
- 2025-04-11
AI Technical Summary
The existing steel pipe concrete arch frame is constructed in the support of deep rock tunnels, making it difficult to ensure full grouting in the steel pipe, and it is prone to hollowing, resulting in local stress concentration after the arch frame is subjected to stress and causing premature damage.
The prefabricated hollow interlayer steel pipe concrete arch frame is used. By placing arc interlayer steel pipes and vertical interlayer steel pipes in the middle arc body and the lower vertical body, and limiting the steel pipes are limited by using limit steel bars and partition plates, connecting and grouting with sealing doors and rotating parts, mortar is injected layered to reduce hollowing.
Through layered injection mortar and sealing design, the pouring hollowing situation is reduced, the finished product quality of the arch frame is improved, and the stability and long life of the arch frame are ensured.
Smart Images
Figure CN119801587A_ABST
Abstract
Description
Technical Field
[0001] The invention discloses an assembled hollow sandwich steel tube concrete arch frame and a construction method thereof, belonging to the field of concrete arch frames. Background Art
[0002] With the reduction of shallow resources in my country, the depth of coal mining has gradually increased. Traditional masonry support, steel support and anchor mesh spraying support can no longer meet the support requirements of deep, high-stress and complex rock masses. Steel tube concrete arches give full play to the advantages of both steel and concrete, and have the characteristics of high strength and high rigidity. They have been widely used in deep rock tunnel support and have achieved good support effects.
[0003] Although steel tube concrete arches have significant advantages in controlling the stability of surrounding rock in deep soft rock tunnels, their construction is complicated and requires overall grouting operations after underground assembly. The amount of underground grouting operations is large, and it is difficult to ensure that the grouting in the steel tube is full, which makes hollowing prone to occur. After the arch is subjected to force, local stress concentration occurs at the hollow position, resulting in premature failure. Therefore, the present application proposes an assembled hollow sandwich steel tube concrete arch that reduces the hollowing phenomenon and a construction method thereof. Summary of the invention
[0004] In view of the deficiencies in the prior art, the present invention aims to provide an assembled hollow sandwich steel tube concrete arch frame and a construction method thereof.
[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions: A prefabricated hollow sandwich steel tube concrete arch frame, comprising two adjacent arch frame bodies, the arch frame bodies comprising a symmetrical middle arc body and a symmetrical lower vertical body, an arc-shaped sandwich steel tube is placed in the middle arc body, a vertical sandwich steel tube is placed in the lower vertical body, one end of the middle arc body and the lower vertical body are both open, and a sealing door is installed with matching screws, the inner side surface of the middle arc body is evenly provided with limiting steel bars, and a plurality of arc-shaped partition plates are fixedly provided on the back of the inner wall of the middle arc body, the arc-shaped sandwich steel tube is limited between the limiting steel bars and the arc-shaped partition plates, a U-shaped arc-shaped sealing plate is matched on the arc-shaped partition plate, corresponding holes are opened on the arc-shaped partition plate, and pairs of corresponding holes are fixedly provided on the arc-shaped sealing plate The arc-shaped partition plate and the arc-shaped sealing plate form a seal, the interior of the middle arc-shaped body is divided into multiple injection spaces by the seal, a through opening is opened at the bottom end of the middle arc-shaped body, the inner side surface of the lower vertical body is evenly provided with auxiliary limiting steel bars, and a plurality of parallel partition plates are fixedly provided on the back of the inner wall of the lower vertical body, the vertical sandwich steel pipe is limited between the auxiliary limiting steel bars and the parallel partition plates, and the parallel partition plates are matched with U-shaped parallel sealing plates, the parallel partition plates are provided with auxiliary corresponding holes, and the parallel sealing plates are fixed with auxiliary corresponding insertion rods corresponding to the auxiliary corresponding holes, the parallel partition plates and the parallel sealing plates form a secondary seal, and the interior of the lower vertical body is divided into multiple auxiliary injection spaces by the secondary seal.
[0006] Furthermore, a plurality of groups of extension steel bars are fixedly provided on the inner side surface of the sealing door, and the extension steel bars extend into the corresponding injection space and the auxiliary injection space.
[0007] Furthermore, the symmetrical intermediate arc-shaped bodies are connected by a docking piece, and the docking piece includes two fixing plates fixed on one of the intermediate arc-shaped bodies, and a setting box is fixed on the other intermediate arc-shaped body, and the setting box is limited between the fixing plates.
[0008] Furthermore, the middle arc-shaped body and the lower vertical body on the same side are connected by a secondary docking piece, and the secondary docking piece includes a secondary setting box fixed to the bottom end of the middle arc-shaped body, and two secondary fixing plates are fixed to the top end of the lower vertical body. The secondary setting box is limited between the secondary fixing plates, and the secondary setting box is connected to the injection space at the bottom of the middle arc-shaped body through the through-hole.
[0009] Furthermore, a rotating part is provided inside the auxiliary setting box and the setting box, and the rotating part includes a rotating rod provided inside the auxiliary setting box and the setting box, and a plurality of toothed rings are fixedly provided on the outer surface of the rotating rod, and long racks are meshed on both sides of the toothed rings.
[0010] Furthermore, the auxiliary setting box and the setting box are both provided with a through-hole 1 for one end of the long rack to pass through, and the auxiliary fixing plate and the inner side surface of the fixing plate are both provided with a through-hole 2 corresponding to the through-hole 1.
[0011] Furthermore, the auxiliary setting box and the setting box are both provided with supporting members for supporting the long rack, and the supporting members are telescopic rods. One end of the rotating rod is rotatably embedded in the end faces of the auxiliary setting box and the setting box, and a plum blossom hole is provided on the embedded end face of the rotating rod. The other end of the rotating rod is connected to a bearing, and the bearing is fixed to the inner walls of the auxiliary setting box and the setting box.
[0012] Furthermore, corresponding grouting port 1 is opened on the upper fixed plate and the setting box, multiple grouting port 2 is opened on the middle arc-shaped body, and the grouting port 2 is connected to the corresponding injection space; multiple grouting port 3 is opened on the lower vertical body, and the grouting port 3 is connected to the corresponding auxiliary injection space.
[0013] Furthermore, a connecting steel bar is fixedly provided on the outer side surface of the sealing door on one of the arch frame bodies, and a through-hole three is provided on the back side of the other arch frame body for the connecting steel bar to pass through the injection space and the auxiliary injection space. The arc-shaped sandwich steel pipe and the vertical sandwich steel pipe are divided into an upper steel plate and a lower steel plate, and a sound insulation board is provided between the upper steel plate and the lower steel plate. A plurality of threaded rods are fixedly provided at the bottom end of the upper steel plate, and through-holes four corresponding to the threaded rods are provided on the sound insulation board and the lower steel plate, and a nut sleeve is provided on the bottom spiral sleeve of the threaded rod, and the sound insulation board is a multi-layer pressed honeycomb sound insulation board.
[0014] A method for constructing an assembled hollow sandwich steel tube concrete arch frame includes the following construction steps: Step 1: First, place the arc-shaped sandwich steel pipe into the middle arc-shaped body, cooperate with the limiting steel bar and the arc-shaped partition plate to limit the arc-shaped sandwich steel pipe, preliminarily fix the arc-shaped sandwich steel pipe, and then cooperate with the sealing door to seal the inside of the middle arc-shaped body to complete the setting and connection of the upper half of the arch frame body; Step 2: Then put the vertical sandwich steel pipe into the lower vertical body, cooperate with the auxiliary limiting steel bar and the parallel partition plate to limit the vertical sandwich steel pipe, preliminarily fix it inside the lower vertical body, and then cooperate with the sealing door to seal the interior of the lower vertical body, completing the setting and connection of the lower half of the arch frame body; Step three: When connecting the two middle arc-shaped bodies, limit the setting box between the fixed plates, rotate the rotating rod, drive the long rack to move, pass through the through-hole 1 thereon, and pass through the through-hole 2 of the fixed plate to complete the preliminary connection; Step 4: connect the middle arc-shaped body and the lower vertical body, limit the auxiliary setting box between the auxiliary fixing plates, rotate the rotating rod, drive the long rack to move, pass through the through-hole 1 on it, and pass through the through-hole 2 of the auxiliary fixing plate to complete the preliminary connection; Step 5: The connecting steel bar enters the injection space and the auxiliary injection space through the third hole. Mortar needs to be injected into the injection space and the auxiliary injection space later. Therefore, after hardening, the inserted connecting steel bar is fixed to ensure the adjacent arch frame body and assemble the arch frame body as needed; Step six: finally, discharge the mortar into the setting box through the grouting port one, thereby hardening the internal design components and achieving the purpose of fixing the internal components; discharge the mortar into the injection space through the grouting port two, thereby hardening the internal design components of the injection space; the mortar inside the injection space will also enter the auxiliary setting box to harden the internal design components of the auxiliary setting box; discharge the mortar into the auxiliary injection space through the grouting port three, thereby hardening the internal design components of the injection space and completing the final assembly arch frame hardening connection.
[0015] Beneficial effects of the present invention: By filling the arc-shaped sandwich steel pipe inside the middle arc body, limiting the arc-shaped sandwich steel pipe with limiting steel bars and arc-shaped partition plates, initially fixing the arc-shaped sandwich steel pipe, and then sealing the inside of the middle arc body with a sealing door, the setting and connection of the upper half of the arch frame are completed.
[0016] By filling the interior of the lower vertical body with vertical sandwich steel pipes, and cooperating with auxiliary limiting steel bars and parallel partition plates, the vertical sandwich steel pipes are limited and initially fixed inside the lower vertical body, and then the interior of the lower vertical body is sealed with a sealing door to complete the setting and connection of the lower half of the arch frame body.
[0017] The interior of the lower vertical body is divided into multiple auxiliary injection spaces, and the interior of the middle arc-shaped body is divided into multiple injection spaces. The mortar is injected in layers to reduce the space required for pouring, thereby reducing the pouring time, improving efficiency, and reducing the pouring space, thereby greatly reducing the occurrence of pouring hollows.
[0018] Then the adjacent middle arc body is installed, and the lower vertical body and the middle arc body are installed to assemble into a hollow sandwich steel tube concrete arch frame. The internal casting body improves the quality of the finished product, and the internal casting space is reduced, thereby greatly reducing the hollowing problem, once again ensuring the quality of the hollow sandwich steel tube concrete arch frame finished product. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. 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 paying creative work.
[0020] Figure 1 This is a front view of an assembled hollow sandwich steel tube concrete arch frame of the present invention; Figure 2 It is a schematic diagram of the connection between the middle arc-shaped body and the arc-shaped sandwich steel pipe of an assembled hollow sandwich steel tube concrete arch frame of the present invention; Figure 3 It is a schematic diagram of the interior of the middle arc-shaped body of an assembled hollow sandwich steel tube concrete arch frame of the present invention; Figure 4 This is a diagram of the connection between the arc-shaped partition plate and the arc-shaped sealing plate of an assembled hollow sandwich steel tube concrete arch frame of the present invention; Figure 5 It is a schematic diagram of the connection between the lower vertical body and the vertical sandwich steel pipe of an assembled hollow sandwich steel tube concrete arch frame of the present invention; Figure 6 It is a schematic diagram of the interior of the lower vertical body of an assembled hollow sandwich steel tube concrete arch frame of the present invention; Figure 7 It is a schematic diagram of the butt connection between the parallel partition plates and the parallel sealing plates of an assembled hollow sandwich steel tube concrete arch frame of the present invention; Figure 8 It is a schematic diagram of the connection between the middle arc-shaped body and the lower vertical body of an assembled hollow sandwich steel tube concrete arch frame of the present invention; Fig. 9 It is a schematic diagram of the interior of adjacent auxiliary setting boxes of an assembled hollow sandwich steel tube concrete arch frame of the present invention; Fig.10 It is a schematic diagram of a vertical sandwich steel tube of an assembled hollow sandwich steel tube concrete arch frame of the present invention; Fig.11 It is a schematic diagram of an arc-shaped sandwich steel tube of an assembled hollow sandwich steel tube concrete arch frame of the present invention.
[0021] In the figure: 1, middle arc body; 2, lower vertical body; 3, arc sandwich steel pipe; 4, vertical sandwich steel pipe; 5, sealing door; 6, limit steel bar; 7, arc partition plate; 8, arc sealing plate; 9, corresponding hole; 10, corresponding plug rod; 11, injection space; 12, through-hole; 13, auxiliary limit steel bar; 14, parallel partition plate; 15, parallel sealing plate; 16, auxiliary corresponding hole; 17, auxiliary corresponding plug rod; 18, auxiliary injection space; 19, extension steel bar; 20, fixed plate ; 21. Auxiliary setting box; 22. Auxiliary fixing plate; 23. Gear ring; 24. Long rack; 25. Through hole one; 26. Through hole two; 27. Telescopic rod; 28. Plum blossom hole; 29. Bearing; 30. Grouting port one; 31. Grouting port two; 32. Grouting port three; 33. Connecting steel bar; 34. Through hole three; 35. Upper steel plate; 36. Lower steel plate; 37. Sound insulation board; 38. Threaded rod; 39. Through hole four; 40. Nut sleeve; 41. Setting box; 42. Rotating rod. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0023] See also Figure 1-7The present invention provides a technical solution: an assembled hollow sandwich steel tube concrete arch frame, comprising two adjacent arch frame bodies, the arch frame body comprising a symmetrical middle arc body 1 and a symmetrical lower vertical body 2, an arc sandwich steel pipe 3 is placed in the middle arc body 1, and a vertical sandwich steel pipe 4 is placed in the lower vertical body 2, one end of the middle arc body 1 and the lower vertical body 2 are both open, and a sealing door 5 is installed with matching screws, the inner side surface of the middle arc body 1 is evenly provided with limiting steel bars 6, and the back of the inner wall of the middle arc body 1 is fixedly provided with a plurality of arc partition plates 7, the arc sandwich steel pipe 3 is limited between the limiting steel bars 6 and the arc partition plate 7, the arc partition plate 7 is matched with a U-shaped arc sealing plate 8, the arc partition plate 7 is opened with a corresponding hole 9, and the arc sealing plate 8 is fixedly provided with a corresponding plug rod corresponding to the corresponding hole 9 10. The arc-shaped partition plate 7 and the arc-shaped sealing plate 8 form a seal. The interior of the intermediate arc-shaped body 1 is divided into a plurality of injection spaces 11 by the seal. A through opening 12 is provided at the bottom end of the intermediate arc-shaped body 1. Auxiliary limiting steel bars 13 are evenly provided on the inner side surface of the lower vertical body 2. A plurality of parallel partition plates 14 are fixedly provided on the back of the inner wall of the lower vertical body 2. The vertical sandwich steel pipe 4 is limited between the auxiliary limiting steel bars 13 and the parallel partition plates 14. A U-shaped parallel sealing plate 15 is matched on the parallel partition plate 14. A auxiliary corresponding hole 16 is provided on the parallel partition plate 14. A auxiliary corresponding plug rod 17 corresponding to the auxiliary corresponding hole 16 is fixedly provided on the parallel sealing plate 15. The parallel partition plates 14 and the parallel sealing plates 15 form a secondary seal. The interior of the lower vertical body 2 is divided into a plurality of auxiliary injection spaces 18 by the secondary seal.
[0024] See Figure and Figure 5 A plurality of groups of extended steel bars 19 are fixedly provided on the inner side surface of the sealing door 5, and the extended steel bars 19 extend into the corresponding injection space 11 and the auxiliary injection space 18. The extended steel bars 19 of the sealing door 5 enter the injection space 11, and the mortar is poured inside. The mortar and the extended steel bars 19 harden, which further ensures the installation stability of the sealing door and improves the quality of the finished product.
[0025] See also Figure 1-9The symmetrical intermediate arcuate bodies 1 are connected by a butt joint, and the butt joint includes two fixing plates 20 fixed on one of the intermediate arcuate bodies 1, and a setting box 41 is fixed on the other intermediate arcuate body 1, and the setting box 41 is limited between the fixing plates 20. The symmetrical intermediate arcuate bodies 1 are connected by a butt joint, and the butt joint includes two fixing plates 20 fixed on one of the intermediate arcuate bodies 1, and a setting box 41 is fixed on the other intermediate arcuate body 1, and the setting box 41 is limited between the fixing plates 20. The intermediate arcuate body 1 and the lower vertical body 2 on the same side are connected by a secondary butt joint, and the secondary butt joint includes a fixing In the auxiliary setting box 21 at the bottom end of the middle arc-shaped body 1, two auxiliary fixing plates 22 are fixedly provided at the top of the lower vertical body 2, the auxiliary setting box 21 is limited between the auxiliary fixing plates 22, the auxiliary setting box 21 is connected with the injection space 11 at the bottom of the middle arc-shaped body 1 through the through-hole 12, and a rotating part is provided inside the auxiliary setting box 21 and the setting box 41, and the rotating part includes a rotating rod 42 arranged in the auxiliary setting box 21 and the setting box 41, and a plurality of toothed rings 23 are fixedly sleeved on the outer surface of the rotating rod 42, and long racks 24 are meshed on both sides of the toothed rings 23, and the auxiliary setting box 21 and the setting box 41 are provided with a plurality of toothed rings 23, and a plurality of toothed rings 23 are meshed on both sides of the toothed rings 23, and a plurality of toothed rings 23 are fixedly sleeved on the outer surface of the rotating rod 42 ... the outer surface of the rotating rod 42, and a plurality of toothed rings 23 are fixedly sleeved on the outer surface of the rotating rod 42, and a plurality of toothed rings 23 are meshed on the outer surface of the rotating rod 42, and a plurality of toothed rings 23 are fixedly sleeved on the outer surface of the rotating rod 42, and a plurality of toothed rings 23 are fixedly sleeved on the outer surface of the rotating rod 42, and a plurality of toothed rings 23 are fixedly sleeved on the outer surface of the rotating rod 42, and a plurality of toothed rings A through hole 25 is formed at one end of the long rack 24, and a through hole 26 corresponding to the through hole 25 is formed on the inner side of the auxiliary fixing plate 22 and the fixing plate 20. A supporting member for supporting the long rack 24 is provided inside the auxiliary setting box 21 and the setting box 41, and the supporting member is a telescopic rod 27. One end of the rotating rod 42 is rotatably embedded in the end faces of the auxiliary setting box 21 and the setting box 41, and a plum blossom hole 28 is formed on the embedded end face of the rotating rod 42. The other end of the rotating rod 42 is connected to a bearing 29, and the bearing 29 is fixed to the inner wall of the auxiliary setting box 21 and the setting box 41. When the two intermediate arc-shaped bodies 1 are connected, the setting box 41 is limited to the fixing plate 2 0, and then cooperate with the drill bit of the drilling rig to insert it into the plum blossom hole 28 of the rotating rod 42 on the setting box 41, so rotate the rotating rod 42, drive the long rack 24 to move, pass through the through-hole 1 25, and pass through the through-hole 26 of the fixed plate 20, and it is in a clamping state, completing the preliminary connection, the connection between the middle arc body 1 and the lower vertical body 2, limit the auxiliary setting box 21 between the auxiliary fixed plates 22, and then cooperate with the drill bit of the drilling rig to insert it into the plum blossom hole 28 of the rotating rod 42 on the auxiliary setting box 21, so rotate the rotating rod 42, drive the long rack 24 to move, pass through the through-hole 1 25, and pass through the through-hole 26 of the auxiliary fixed plate 22, and it is in a clamping state, completing the preliminary connection.
[0026] See also Figure 1-3 and Fig. 9 , the upper fixed plate 20 and the setting box 41 are provided with corresponding grouting ports 1 30, the middle arc-shaped body 1 is provided with a plurality of grouting ports 2 31, the grouting ports 2 31 are connected to the corresponding injection space 11, the lower vertical body 2 is provided with a plurality of grouting ports 32, the grouting ports 3 32 are connected to the corresponding auxiliary injection space 18, the grouting port 1 30 discharges mortar into the setting box 41, thereby hardening the internal design components, achieving the purpose of fixing the internal components and ensuring the connection stability, the grouting port 2 31 discharges mortar into the injection space 11, thereby hardening the internal design components of the injection space 11, the grouting port 3 32 discharges mortar into the auxiliary injection space 18, thereby hardening the internal design components of the auxiliary injection space 18, and finally ensuring the stability of the connection, and secondly the injection space 11 at the bottom is connected to the auxiliary setting box 21, so no grouting ports are required on the auxiliary setting box 21.
[0027] See also Figure 1 and Figure 6 A connecting steel bar 33 is fixedly arranged on the outer side of the sealing door 5 on one of the arch frame bodies, and a through hole 34 is opened on the back side of the other arch frame body for the connecting steel bar 33 to pass through the injection space 11 and the auxiliary injection space 18. The arc sandwich steel pipe 3 and the vertical sandwich steel pipe 4 are divided into an upper steel plate 35 and a lower steel plate 36, and a sound insulation board 37 is arranged between the upper steel plate 35 and the lower steel plate 36. A plurality of threaded rods 38 are fixedly arranged at the bottom end of the upper steel plate 35, and the sound insulation board 37 and the lower steel plate The plate 36 is provided with a through hole 49 corresponding to the threaded rod 38, and the bottom spiral sleeve of the threaded rod 38 is provided with a nut sleeve 40. The sound insulation board 37 is a multi-layer pressed honeycomb sound insulation board. The connecting steel bar 33 enters the injection space 11 and the auxiliary injection space 18 through the through hole 34. The injection space 11 and the auxiliary injection space 18 need to be injected with mortar later. Therefore, after hardening, the inserted connecting steel bar 33 is fixed to ensure the adjacent arch frame body. The arch frame body is assembled as needed. The design of the sound insulation board 37 ensures that the arch frame body has a certain sound-absorbing effect.
[0028] A method for constructing an assembled hollow sandwich steel tube concrete arch frame includes the following construction steps: Step 1: First, put the arc-shaped sandwich steel pipe 3 into the middle arc-shaped body 1, cooperate with the limiting steel bar 6 and the arc partition plate 7 to limit the arc-shaped sandwich steel pipe 3, preliminarily fix the arc-shaped sandwich steel pipe 3, and then cooperate with the sealing door 5 to seal the inside of the middle arc-shaped body 1, and complete the setting and connection of the upper half of the arch frame body; Step 2: Then put the vertical sandwich steel pipe 4 into the lower vertical body 2, cooperate with the auxiliary limiting steel bar 13 and the parallel partition plate 14, limit the vertical sandwich steel pipe 4, and initially fix it inside the lower vertical body 2, and then cooperate with the sealing door 5 to seal the lower vertical body 2, and complete the setting and connection of the lower half of the arch frame body; Step three: When connecting the two intermediate arc-shaped bodies 1, limit the setting box 41 between the fixed plates 20, rotate the rotating rod 42, drive the long rack 24 to move, pass through the through-hole 1 25 thereon, and pass through the through-hole 2 26 of the fixed plate 20, completing the preliminary connection; Step 4: connect the middle arc-shaped body 1 and the lower vertical body 2, limit the auxiliary setting box 21 between the auxiliary fixing plates 22, rotate the rotating rod 42, drive the long rack 24 to move, pass through the through-hole 1 25 thereon, and pass through the through-hole 2 26 of the auxiliary fixing plate 22, and complete the preliminary connection; Step five: the connecting steel bar 33 enters the injection space 11 and the auxiliary injection space 18 through the through hole 34. Mortar needs to be injected into the injection space 11 and the auxiliary injection space 18 later. Therefore, after hardening, the inserted connecting steel bar 33 is fixed to ensure the adjacent arch frame body and assemble the arch frame body as needed; Step six: Finally, the mortar is discharged into the setting box 41 through the grouting port 1 30 to harden the internal design components and achieve the purpose of fixing the internal components. The mortar is discharged into the injection space 11 through the grouting port 2 31 to harden the internal design components of the injection space 11. The mortar inside the injection space 11 will also enter the auxiliary setting box 21 to harden the internal design components of the auxiliary setting box 21. The mortar is discharged into the auxiliary injection space 18 through the grouting port 3 32 to harden the internal design components of the auxiliary injection space 18 and complete the final assembly arch frame hardening connection.
[0029] During the specific work, the arc-shaped sandwich steel pipe 3 is placed into the middle arc-shaped body 1, and the arc-shaped sandwich steel pipe 3 is limited by the limiting steel bars 6 and the arc-shaped partition plate 7, and initially fixed in the arc-shaped sandwich steel pipe 3, and then the sealing door 5 is used to seal the middle arc-shaped body 1 to complete the setting and connection of the upper half of the arch frame body, and the vertical sandwich steel pipe 4 is placed into the lower vertical body 2, and the auxiliary limiting steel bars 13 and the parallel partition plate 14 are used to limit the vertical sandwich steel pipe 4, and initially fixed in the lower vertical body 2, and then the sealing door 5 is used to seal the lower vertical body 2 to complete the setting and connection of the lower half of the arch frame body. Next, the interior of the lower vertical body 2 is divided into a plurality of auxiliary injection spaces 18, and the interior of the middle arc body 1 is divided into a plurality of injection spaces 11, and the mortar is injected in layers to reduce the space required for pouring, thereby reducing the pouring time, improving efficiency, and reducing the pouring space to greatly reduce the occurrence of pouring hollowing. Then, the adjacent middle arc body 1 is installed, and the lower vertical body 2 and the middle arc body 1 are installed to be assembled into a hollow sandwich steel tube concrete arch frame. The internal pouring body improves the quality of the finished product, and the internal pouring space is reduced, thereby greatly reducing the hollowing phenomenon, once again ensuring the quality of the hollow sandwich steel tube concrete arch frame finished product.
[0030] When the two middle arc-shaped bodies 1 are connected, the setting box 41 is limited between the fixed plates 20, and then the drill bit of the drilling rig is inserted into the plum blossom hole 28 of the rotating rod 42 on the setting box 41. Therefore, the rotating rod 42 is rotated to drive the long rack 24 to move, pass through the through-hole 1 25, and pass through the through-hole 2 26 of the fixed plate 20, and it is in a clamping state, completing the preliminary connection. When the middle arc-shaped body 1 and the lower vertical body 2 are connected, the auxiliary setting box 21 is limited between the auxiliary fixed plates 22, and then the drill bit of the drilling rig is inserted into the plum blossom hole 28 of the rotating rod 42 on the auxiliary setting box 21. Therefore, the rotating rod 42 is rotated to drive the long rack 24 to move, pass through the through-hole 1 25, and pass through the through-hole 2 26 of the auxiliary fixed plate 22, and it is in a clamping state, completing the preliminary connection. Grouting port one 30 discharges mortar into the setting box 41, thereby hardening the internal design components, achieving the purpose of fixing the internal components and ensuring the stability of the connection. Grouting port two 31 discharges mortar into the injection space 11, thereby hardening the internal design components of the injection space 11. Grouting port three 32 discharges mortar into the auxiliary injection space 18, thereby hardening the internal design components of the auxiliary injection space 18, and finally ensuring the stability of the connection. Secondly, the lowest injection space 11 is connected to the auxiliary setting box 21, so there is no need to open a grouting port on the auxiliary setting box 21. The connecting steel bar 33 enters the injection space 11 and the auxiliary injection space 18 through the through port three 34. The mortar needs to be injected into the injection space 11 and the auxiliary injection space 18 later. Therefore, after hardening, the inserted connecting steel bar 33 is fixed to ensure the adjacent arch frame body and assemble the arch frame body as needed.
[0031] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. An assembled hollow sandwich steel tube concrete arch frame, characterized in that: The invention comprises two adjacent arch frame bodies, wherein the arch frame bodies comprise a symmetrical middle arc-shaped body (1) and a symmetrical lower vertical body (2), wherein an arc-shaped sandwich steel pipe (3) is placed inside the middle arc-shaped body (1), and a vertical sandwich steel pipe (4) is placed inside the lower vertical body (2), wherein one end of the middle arc-shaped body (1) and the lower vertical body (2) are both open and are provided with a sealing door (5) by means of screws, wherein the inner side surface of the middle arc-shaped body (1) is evenly provided with limit steel bars (6), and the inner wall back surface of the middle arc-shaped body (1) is fixedly provided with a plurality of arc-shaped partition plates (7), wherein the arc-shaped sandwich steel pipe (3) is provided in the middle arc-shaped body (1), and the arc-shaped sandwich steel pipe (4) is provided in the middle arc-shaped body (1). The layer steel pipe (3) is limited between the limiting steel bar (6) and the arc-shaped partition plate (7); the arc-shaped partition plate (7) is matched with a U-shaped arc-shaped sealing plate (8); the arc-shaped partition plate (7) is provided with a corresponding hole (9); the arc-shaped sealing plate (8) is fixed with a corresponding plug rod (10) corresponding to the corresponding hole (9); the arc-shaped partition plate (7) and the arc-shaped sealing plate (8) form a sealing member; the interior of the middle arc-shaped body (1) is divided into a plurality of injection spaces (11) by the sealing member; and a through opening (12) is provided at the bottom end of the middle arc-shaped body (1); Auxiliary limiting steel bars (13) are evenly arranged on the inner side surface of the lower vertical body (2), and a plurality of parallel partition plates (14) are fixedly arranged on the back of the inner wall of the lower vertical body (2); the vertical sandwich steel pipe (4) is limited between the auxiliary limiting steel bars (13) and the parallel partition plates (14); a U-shaped parallel sealing plate (15) is matched on the parallel partition plates (14); a secondary corresponding hole (16) is opened on the parallel partition plates (14); a secondary corresponding plug rod (17) corresponding to the secondary corresponding hole (16) is fixedly arranged on the parallel sealing plate (15); the parallel partition plates (14) and the parallel sealing plates (15) constitute a secondary sealing member; the interior of the lower vertical body (2) is divided into a plurality of secondary injection spaces (18) by the secondary sealing member.
2. The assembled hollow sandwich steel tube concrete arch according to claim 1, characterized in that: A plurality of groups of extension steel bars (19) are fixedly provided on the inner side surface of the sealing door (5), and the extension steel bars (19) extend into the corresponding injection space (11) and the auxiliary injection space (18).
3. The assembled hollow sandwich steel tube concrete arch according to claim 2, characterized in that: The symmetrical intermediate arc-shaped bodies (1) are connected via a docking piece, wherein the docking piece comprises two fixing plates (20) fixed to one of the intermediate arc-shaped bodies (1), and a setting box (41) is fixed to the other intermediate arc-shaped body (1), wherein the setting box (41) is limited between the fixing plates (20).
4. The assembled hollow sandwich steel tube concrete arch frame according to claim 3, characterized in that: The middle arc-shaped body (1) and the lower vertical body (2) on the same side are connected via a secondary docking member, wherein the secondary docking member comprises a secondary setting box (21) fixed to the bottom end of the middle arc-shaped body (1), and two secondary fixing plates (22) are fixed to the top end of the lower vertical body (2). The secondary setting box (21) is limited between the secondary fixing plates (22), and the secondary setting box (21) is connected to the injection space (11) at the bottom of the middle arc-shaped body (1) via the through-hole (12).
5. The assembled hollow sandwich steel tube concrete arch frame according to claim 4, characterized in that: Rotating parts are provided inside the auxiliary setting box (21) and the setting box (41), and the rotating parts include rotating rods (42) provided inside the auxiliary setting box (21) and the setting box (41), and a plurality of toothed rings (23) are fixedly sleeved on the outer surface of the rotating rod (42), and long toothed racks (24) are meshed on both sides of the toothed rings (23).
6. The assembled hollow sandwich steel tube concrete arch frame according to claim 5, characterized in that: The auxiliary setting box (21) and the setting box (41) are both provided with a first through-hole (25) for one end of the elongated rack (24) to pass through, and the inner side surfaces of the auxiliary fixing plate (22) and the fixing plate (20) are both provided with a second through-hole (26) corresponding to the first through-hole (25).
7. The assembled hollow sandwich steel tube concrete arch frame according to claim 6, characterized in that: The auxiliary setting box (21) and the setting box (41) are both provided with a support member for supporting the long rack (24), the support member being a telescopic rod (27), one end of the rotating rod (42) being rotatably embedded in the end faces of the auxiliary setting box (21) and the setting box (41), a plum blossom hole (28) being provided on the embedded end face of the rotating rod (42), the other end of the rotating rod (42) being connected to a bearing (29), and the bearing (29) being fixed to the inner walls of the auxiliary setting box (21) and the setting box (41).
8. The assembled hollow sandwich steel tube concrete arch frame according to claim 7, characterized in that: The upper fixed plate (20) and the setting box (41) are provided with corresponding grouting ports one (30), the middle arc-shaped body (1) is provided with a plurality of grouting ports two (31), the grouting ports two (31) are connected to the corresponding injection space (11), and the lower vertical body (2) is provided with a plurality of grouting ports three (32), the grouting ports three (32) are connected to the corresponding auxiliary injection space (18).
9. The assembled hollow sandwich steel tube concrete arch frame according to claim 8, characterized in that: A connecting steel bar (33) is fixedly provided on the outer surface of the sealing door (5) on one of the arch frame bodies, and a through hole (34) is provided on the back of the other arch frame body for the connecting steel bar (33) to pass through the injection space (11) and the auxiliary injection space (18). The arc-shaped sandwich steel pipe (3) and the vertical sandwich steel pipe (4) are divided into an upper steel plate (35) and a lower steel plate (36). A sound insulation board (37) is provided between the upper steel plate (35) and the lower steel plate (36). A plurality of threaded rods (38) are fixedly provided at the bottom end of the upper steel plate (35). Four through holes (39) corresponding to the threaded rods (38) are provided on the sound insulation board (37) and the lower steel plate (36). A nut sleeve (40) is provided on the bottom spiral sleeve of the threaded rod (38). The sound insulation board (37) is a multi-layer pressed honeycomb sound insulation board.
10. A method for constructing an assembled hollow sandwich steel tube concrete arch frame, characterized in that: The construction steps include: Step 1: First, place the arc-shaped sandwich steel pipe (3) into the interior of the middle arc-shaped body (1), and use the limiting steel bars (6) and the arc-shaped partition plate (7) to limit the arc-shaped sandwich steel pipe (3), preliminarily fix the arc-shaped sandwich steel pipe (3), and then use the sealing door (5) to seal the interior of the middle arc-shaped body (1), thereby completing the setting and connection of the upper half of the arch frame body; Step 2: Then put the vertical sandwich steel pipe (4) into the lower vertical body (2), cooperate with the auxiliary limiting steel bar (13) and the parallel partition plate (14) to limit the vertical sandwich steel pipe (4), and initially fix it inside the lower vertical body (2), and then cooperate with the sealing door (5) to seal the interior of the lower vertical body (2), completing the setting and connection of the lower half of the arch frame body; Step three: When connecting the two intermediate arc-shaped bodies (1), the setting box (41) is limited between the fixed plates (20), and the rotating rod (42) is rotated to drive the elongated rack (24) to move, pass through the first through-hole (25) thereon, and pass through the second through-hole (26) of the fixed plate (20), thereby completing the preliminary connection; Step 4: connect the middle arc-shaped body (1) and the lower vertical body (2), limit the auxiliary setting box (21) between the auxiliary fixing plates (22), rotate the rotating rod (42), drive the long rack (24) to move, pass through the through-hole 1 (25) thereon, and pass through the through-hole 2 (26) of the auxiliary fixing plate (22), thereby completing the preliminary connection; Step 5: The connecting steel bar (33) enters the injection space (11) and the auxiliary injection space (18) through the third opening (34). Mortar needs to be injected into the injection space (11) and the auxiliary injection space (18) later. Therefore, after hardening, the inserted connecting steel bar (33) is fixed to ensure the adjacent arch frame bodies, and the arch frame bodies are assembled as needed. Step 6: Finally, the mortar is discharged into the setting box (41) through the grouting port 1 (30), thereby hardening the internal design components and achieving the purpose of fixing the internal components. The mortar is discharged into the injection space (11) through the grouting port 2 (31), thereby hardening the internal design components of the injection space (11). The mortar inside the injection space (11) will also enter the auxiliary setting box (21) to harden the internal design components of the auxiliary setting box (21). The mortar is discharged into the auxiliary injection space (18) through the grouting port 3 (32), thereby hardening the internal design components of the auxiliary injection space (18), and completing the final assembly arch frame hardening connection.