A door frame wall rapid construction system and construction technology thereof

Abstract

A door frame wall rapid construction system and a construction process thereof, comprising a self-centering combined positioning ring, two of the self-centering combined positioning rings are fixed on the inner wall of a tunnel by a rapid construction machine, two splicing panels are arranged between the two self-centering combined positioning rings, the splicing panels are connected to the self-centering combined positioning rings by butt bolts, a prefabricated telescopic steel mesh is arranged between the two splicing panels, the prefabricated telescopic steel mesh and the splicing panels are fixedly connected by binding, and the prefabricated telescopic steel mesh is connected to a prestressed anchor rod, and then a rapid assembly door frame is installed at a reserved door opening of the prefabricated telescopic steel mesh, and then the self-centering combined positioning ring, the splicing panels, the prefabricated telescopic steel mesh and the prestressed anchor rod are all encapsulated in concrete; a large number of existing traffic tunnel projects are transformed into civil air defense projects that meet the requirements of protection standards, which has a significant effect on improving the protection timeliness of civil air defense projects and quickly repairing damaged protection project openings.

Description

Technical Field

[0001] The invention belongs to the technical field of protective engineering, and in particular relates to a door frame wall rapid construction system and a construction process thereof. Background Art

[0002] Civil air defense projects are of great significance to protecting the security of the country and the people. With the rapid development of tunnel technology in my country, especially the rapid development of shield technology, there are a large number of circular or quasi-circular tunnel projects that exist, are under construction or will be built in my country's civil transportation tunnel projects. These tunnel projects can be quickly constructed into civil air defense projects to meet protection needs. Mouth protection equipment is an important part of civil air defense projects and a key technology. Its performance directly affects the protection level of the project. Among them, the door frame wall is the key to quickly constructing the mouth of the protection project. The patent of this invention provides a door frame wall rapid construction system and its construction process that can be quickly constructed by assembling, which better solves the technical problem of quickly constructing the door frame wall of the protection project. Summary of the invention

[0003] The invention patent aims to provide a technical process for the construction of protective facilities for the entrances of a large number of existing civil transportation tunnel projects, which can be quickly transformed into national defense and civil air defense projects during wartime. The invention patent aims to provide a technical process for rapid repair and construction after the entrances of national defense and civil air defense projects are hit. This technology can also be used for rapid repair and construction after the entrances of national defense and civil air defense projects are hit.

[0004] In view of the deficiencies in the prior art, the present invention provides a door frame wall rapid construction system, comprising a self-centering combined positioning ring, a splicing panel, a quick-assembled door frame, a prefabricated telescopic steel mesh, a quick-build machine and a prestressed anchor rod, wherein two of the self-centering combined positioning rings are fixed to the inner wall of a tunnel by a quick-build machine, two splicing panels are arranged between the two self-centering combined positioning rings, the splicing panels are connected to the self-centering combined positioning rings by butt bolts, a prefabricated telescopic steel mesh is arranged between the two splicing panels, and the prefabricated telescopic steel mesh and the splicing panels are fixedly connected by binding, and then the quick-assembled door frame is installed at the reserved door opening of the prefabricated telescopic steel mesh, the quick-assembled door frame is connected to the prefabricated telescopic steel mesh by binding with an anchor hook, and then the self-centering combined positioning ring, the splicing panel, the prefabricated telescopic steel mesh and the prestressed anchor rod are all encapsulated in concrete;

[0005] The rapid construction tool comprises a three-jaw chuck, a chuck hand wheel is arranged in the adjustment hole of the outer cylindrical surface of the three-jaw chuck, the radial slide rail of the three-jaw chuck is slidably connected with the slide groove at one end of the expansion arm, the side wall of the expansion arm is rotatably connected with the claw of the three-jaw chuck through a pin, the three expansion arms are respectively connected with the corresponding ear seats on the shaft sleeve through a connecting rod and a pin shaft, the shaft sleeve is sleeved on the cylindrical guide rail, one end of the cylindrical guide rail is threadedly connected with the claw of the three-jaw chuck, the other end of the cylindrical guide rail and the three-jaw chuck are respectively fixed on two brackets, and the shaft A threaded sleeve is welded under the sleeve, and a lead screw is connected to the inner thread of the threaded sleeve. One end of the lead screw is connected to the bearing seat on the bracket of the fixed cylindrical guide rail, and the other end is connected to the inner circular surface of the three-jaw chuck through the bearing seat. The lead screw is located at one end of the three-jaw chuck and a lead screw handwheel is provided. The other end of the expansion arm is connected to one end of the moving arm, and the other end of the moving arm is connected to a top shoe through bolts. The rapid construction machine rests on the splicing part of the self-centering combined positioning ring through the top shoe, and the self-centering combined positioning ring is installed on the inner wall of the tunnel through the rapid construction machine.

[0006] The self-centering combined positioning ring is composed of three sections of positioning ring monomers, the cross-section of the positioning ring monomer is "L"-shaped, one end of the positioning ring monomer is provided with a barbed joint I with a limit plate, and the other end is provided with a barbed joint II, the barbed joint II of one of the connected positioning ring monomers is radially inserted into the barbed joint I of the other positioning ring monomer, so that the two connected positioning ring monomers can achieve circumferential sliding, a threaded hole is opened on the barbed joint II, a fastening screw is screwed in the threaded hole, the lower surface of the fastening screw is consistent with the surface shape of the barbed joint I slide rail, when the barbed joint I and the barbed joint II are adjusted, the relative position of the barbed joint I and the barbed joint II is fixed by tightening the fastening screw.

[0007] The spliced ​​panels are composed of panel No. 1, panel No. 2, panel No. 3, panel No. 4, panel No. 5, panel No. 6, panel No. 7, panel No. 8 and panel No. 9. Panel No. 1 is connected to panel No. 7 by mortise and tenon, panel No. 1 is connected to panel No. 2 by mortise and tenon, panel No. 2 is connected to panel No. 3 and panel No. 4 by mortise and tenon respectively, panel No. 3 and panel No. 4 are connected to panel No. 5 by mortise and tenon, panel No. 5 is connected to panel No. 6 by mortise and tenon, panel No. 6 is connected to panel No. 9 by mortise and tenon, panel No. 9 is connected to panel No. 8 by mortise and tenon, panel No. 8 is connected to panel No. 7 by mortise and tenon, and the tenon is made of elastic polymer material.

[0008] The quick-assemble door frame is composed of a frame, angle steel, rubber strip groove, anchor hook, and hinge fixing plate. An anchor hook is arranged circumferentially at one end of the frame panel, and an angle steel is arranged circumferentially at the other end. A rubber strip groove is arranged inside the angle steel, and hinge fixing plates are symmetrically arranged on the side wall of the frame. It is spliced ​​with 12.5 equilateral angle steel. To facilitate on-site assembly, the anchor hook is fastened with a quick-insert thread structure. The door frame wall and door opening all adopt a double-side door frame tension structure to increase the rigidity and stability of the structure.

[0009] A construction process for a door frame wall rapid construction system comprises the following steps:

[0010] Step 1: Select the door frame wall position and set the prestressed anchor rod; select the prestressed anchor rod hole layout position according to the design, and use the simple stand to drill holes according to the layout position; the drilling direction is 45° to the hole direction, and the hole is cleaned with high-pressure air after drilling; after the pre-prepared prestressed anchor rod is installed to the designed depth, cement slurry is injected into the hole with a water-cement ratio of 0.4 to 0.5;

[0011] Step 2: roughen the hole wall. According to the position of the door frame wall, roughen the hole wall within the door frame wall and clean the floating dust on the hole wall.

[0012] Step 3, set the self-centering combination positioning ring; according to the position of the door frame wall, set two self-centering combination positioning rings. After the self-centering combination positioning rings are spliced ​​into one, the distance from the inner ring hole wall is 600mm, and then the combination positioning ring is fixed by a rapid construction tool, so that the top shoe of the rapid construction tool contacts the spliced ​​part of the self-centering combination positioning ring, and then the top shoe is adjusted by turning the screw handwheel to tighten the spliced ​​part of the self-centering combination positioning ring, and the position of the top shoe is slightly adjusted by turning the chuck handwheel, and the self-centering combination positioning ring is made to fit tightly with the inner wall of the tunnel through the rapid construction mechanism, and then the fastening screws on the self-centering combination positioning ring are tightened to fix the self-centering combination positioning ring in the axial direction of the tunnel; then the rapid construction tool is removed;

[0013] Step 4: Install the prefabricated telescopic steel mesh. Place the prefabricated telescopic steel mesh between the self-centering combined positioning rings according to the position of the door frame wall, and tie and fasten it with the prestressed anchor rods and the splicing panel using wire;

[0014] Step 5: Install the quick-assemble door frame and place it in the door opening position reserved by the prefabricated telescopic steel mesh, so that the anchor hook on the quick-assemble door frame is tied to the prefabricated telescopic steel mesh, and the door opening of the door frame wall adopts a double-side door frame tension structure;

[0015] Step 6: Install the splicing panel on the side away from the mouth, and the splicing panel is connected on site in sequence through tenons and mortise grooves; fix the splicing panel to the prefabricated telescopic steel mesh and the self-centering combined positioning ring through tension bolts and steel bar binding;

[0016] Step 7, install the splicing panel located on the side close to the mouth, splice the splicing panel on site through the tenon and the mortise in turn, and then place it between the self-centering combined positioning ring and the prefabricated telescopic steel mesh located on the outside, and fix the splicing panel located on the outside to the prefabricated telescopic steel mesh and the self-centering combined positioning ring with tension bolts and wire binding;

[0017] Step 8, install other reserved hole components; install other reserved hole components according to the design;

[0018] Step 9: Cast on site by pouring quick-setting concrete, complete the pouring in one go, and then perform maintenance.

[0019] The beneficial effects of the present invention are:

[0020] 1. By quickly and efficiently constructing door frame walls at the entrances of existing circular tunnels, a large number of existing traffic tunnel projects can be transformed into civil air defense projects that meet the protection standards. This can effectively protect national property and people's lives in wartime, and has a significant effect on improving the timeliness of protection of civil air defense projects and quickly repairing damaged protective project entrances.

[0021] 2. By setting up a rapid construction machine, the self-centering combined positioning ring can be quickly propped up and closely attached to the tunnel wall, ensuring that the contact surface between the self-centering combined positioning ring and the tunnel wall is evenly stressed, while shortening the construction time and improving production efficiency.

[0022] 3. The spliced ​​panels are connected quickly on site through tenons and mortise grooves. Firstly, it avoids the space obstruction caused by the transportation of integral panels in the tunnel; secondly, the spliced ​​panels are in small blocks, which is convenient for loading and unloading. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of a rapid construction machine of a door frame wall rapid construction system according to the present invention from a first perspective;

[0024] Figure 2 A schematic diagram of a rapid construction machine of a door frame wall rapid construction system according to the present invention from a second viewing angle;

[0025] Figure 3 A schematic diagram of the first perspective of the cooperation between a rapid construction machine and a self-centering combined positioning ring of a door frame wall rapid construction system of the present invention;

[0026] Figure 4 A schematic diagram of the cooperation between a rapid construction machine and a self-centering combined positioning ring of a door frame wall rapid construction system according to the present invention from a second viewing angle;

[0027] Figure 5 A schematic diagram of a self-centering combined positioning ring structure of a door frame wall rapid construction system of the present invention;

[0028] Figure 6 A schematic diagram of a self-centering combined positioning ring monomer of a door frame wall rapid construction system of the present invention;

[0029] Figure 7 A schematic structural diagram of the barbed joint I of the self-centering combined positioning ring of the present invention;

[0030] Figure 8 A schematic diagram of the structure of the barbed joint II of the self-centering combined positioning ring of the present invention;

[0031] Fig. 9 A schematic diagram of a splicing panel of a door frame wall rapid construction system of the present invention;

[0032] Fig.10 Schematic diagram of the tenon and the mortise of the spliced ​​panel of the present invention not being connected;

[0033] Fig.11 A schematic diagram of the tenon and mortise connection of the spliced ​​panel of the present invention;

[0034] Fig.12 A schematic diagram of the tenon and the mortise of the spliced ​​panel of the present invention being connected;

[0035] Fig.13 A schematic diagram of a quick assembly door frame of a door frame wall quick construction system according to the present invention;

[0036] Fig.14 Schematic diagram of the installation of prefabricated telescopic steel mesh according to the present invention;

[0037] Fig.15 A side view of the installation of a prefabricated telescopic steel mesh according to the present invention;

[0038] Fig.16 Door frame wall anchoring design drawing of the present invention;

[0039] Fig.17 Schematic diagram of the overall structure of the door frame wall of the present invention;

[0040] 1-Self-centering combination positioning ring, 101-Positioning ring monomer, 102-Barbed splicing joint I, 103-Barbed splicing joint II, 2-Splicing panel, 201-Panel No. 1, 202-Panel No. 2, 203-Panel No. 3, 204-Panel No. 4, 205-Panel No. 5, 206-Panel No. 6, 207-Panel No. 7, 208-Panel No. 8, 209-Panel No. 9, 3-Quick construction machine, 301-Three claws Chuck, 302-chuck handwheel, 303-expansion arm, 304-sleeve, 305-cylindrical guide rail, 306-bracket, 307-connecting rod, 308-screw, 309-screw handwheel, 310-moving arm, 311-top shoe, 4-prefabricated telescopic steel mesh, 5-quick-assembled door frame, 501-frame, 502-angle steel, 503-rubber strip groove, 504-anchor hook, 505-hinge fixing plate, 6-prestressed anchor rod. DETAILED DESCRIPTION

[0041] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0042] like Figures 1 to 17 As shown, a door frame wall rapid construction system comprises a self-centering combined positioning ring 1, a splicing panel 2, a quick assembly door frame 5, a prefabricated telescopic steel mesh 4, a quick construction machine 3 and a prestressed anchor rod 6, wherein two of the self-centering combined positioning rings 1 are fixed to the inner wall of the tunnel by the quick construction machine 3, two splicing panels 2 are arranged between the two self-centering combined positioning rings 1, the splicing panels 2 are connected to the self-centering combined positioning rings 1 by butt bolts, a prefabricated telescopic steel mesh 4 is arranged between the two splicing panels 2, and the prefabricated telescopic steel mesh 4 and the splicing panels 2 are fixedly connected by binding, and the prefabricated telescopic steel mesh 4 is connected to the prestressed anchor rod 6, and then the quick assembly door frame 5 is installed at the reserved door opening of the prefabricated telescopic steel mesh 4, and the quick assembly door frame 5 is connected to the prefabricated telescopic steel mesh 4 by binding hooks 504, and then the self-centering combined positioning ring 1, the splicing panel 2, the prefabricated telescopic steel mesh 4 and the prestressed anchor rod 6 are all encapsulated in concrete;

[0043] The rapid construction tool 3 includes a three-jaw chuck 301, a chuck handwheel 302 is arranged in the adjustment hole of the outer cylindrical surface of the three-jaw chuck 301, the radial slide rail of the three-jaw chuck 301 is slidably connected with the slide groove at one end of the expansion arm 303, the side wall of the expansion arm 303 is rotatably connected with the claw of the three-jaw chuck 301 through a pin, the three expansion arms 303 are respectively connected with the corresponding ear seats on the sleeve 304 through a connecting rod 307 and a pin shaft, the sleeve 304 is sleeved on the cylindrical guide rail 305, one end of the cylindrical guide rail 305 is threadedly connected with the claw of the three-jaw chuck 301, and the other end of the cylindrical guide rail 305 and the three-jaw chuck 301 are respectively fixed to two brackets 306 A threaded sleeve is welded below the sleeve 304, and a lead screw 308 is connected to the inner thread of the threaded sleeve. One end of the lead screw 308 is connected to the bearing seat on the bracket 306 of the fixed cylindrical guide rail 305, and the other end is connected to the inner circumferential surface of the three-jaw chuck 301 through the bearing seat. The lead screw 308 is located at one end of the three-jaw chuck 301 and is provided with a lead screw handwheel 309. The other end of the tensioning arm 303 is connected to one end of the moving arm 310, and the other end of the moving arm 310 is connected to a top shoe 311 by bolts. The quick construction tool 3 is against the splicing part of the self-centering combined positioning ring 1 through the top shoe 311, and the self-centering combined positioning ring 1 is installed on the inner wall of the tunnel through the quick construction tool 3.

[0044] The self-centering combined positioning ring 1 is composed of three sections of positioning ring monomers 101. The cross section of the positioning ring monomer 101 is "L"-shaped. One end of the flange of the positioning ring monomer 101 that is not in contact with the tunnel is provided with a barbed joint I 102 with a limit plate, and the other end is provided with a barbed joint II 103. The other flange is tightly fitted with the tunnel wall. The barbed joint II 103 of one of the connected positioning ring monomers 101 is radially inserted into the barbed joint I 102 of the other positioning ring monomer 101, so that the two connected A positioning ring monomer 101 can achieve circumferential sliding, and a threaded hole is opened on the barbed joint II 103, and a fastening screw is screwed in the threaded hole. The lower surface of the fastening screw is consistent with the surface shape of the sliding rail of the barbed joint I 102. When the barbed joint I 102 and the barbed joint II 103 are adjusted, the relative positions of the barbed joint I 102 and the barbed joint II 103 are fixed by tightening the fastening screws, and the flange of the positioning ring monomer 101 that is not in contact with the tunnel is connected to the prefabricated telescopic steel mesh 4 through a wire.

[0045] The splicing panel 2 is composed of a first panel 201, a second panel 202, a third panel 203, a fourth panel 204, a fifth panel 205, a sixth panel 206, a seventh panel 207, an eighth panel 208 and a ninth panel 209. The first panel 201 is connected to the seventh panel 207 by a mortise and tenon joint, the first panel 201 is connected to the second panel 202 by a mortise and tenon joint, the second panel 202 is connected to the third panel 203 and the fourth panel 204 respectively. Panel No. 3 203 and panel No. 4 204 are connected to panel No. 5 205 through mortise and tenon, panel No. 5 205 is connected to panel No. 6 206 through mortise and tenon, panel No. 6 206 is connected to panel No. 9 209 through mortise and tenon, panel No. 9 209 and panel No. 8 208 are connected to panel No. 8 208 and panel No. 7 207 through mortise and tenon, and the tenon is made of elastic polymer material.

[0046] The quick assembly door frame 5 is composed of a frame 501, an angle steel 502, a rubber strip groove 503, an anchor hook 504, and a hinge fixing plate 505. An anchor hook 504 is circumferentially arranged at one end of the panel of the frame 501, and an angle steel 502 is circumferentially arranged at the other end. A rubber strip groove 503 is arranged inside the angle steel 502, and a hinge fixing plate 505 is symmetrically arranged on the side wall of the frame 501. It is spliced ​​with 12.5 equilateral angle steels 502. To facilitate on-site assembly, the anchor hook 504 is fastened with a quick-insert thread structure, and the door frame wall and door openings all adopt a double-side door frame tension structure to increase the rigidity and stability of the structure.

[0047] The prefabricated telescopic steel mesh 4 is arranged at equal intervals, with a spacing of 300×300mm. The retraction and extension of the prefabricated telescopic steel mesh 4 is achieved through a parallelogram mechanism. Prestressed anchor rods 6 are used for oblique anchoring to increase the friction between the door frame wall and the rock wall, and at the same time provide horizontal resistance along the direction of the tunnel shock wave to improve the resistance of the door frame wall. The door frame wall is 600mm thick and 3000mm in diameter. The prestressed anchor rods 6 have a diameter of 20mm, the depth of the prestressed anchor rods 6 into the surrounding rock is 1000mm, 45° oblique tension, the prestressed anchor rods 6 enter the wall 250mm, and two rows of prestressed anchor rods 6 are arranged along the rock wall. Each row of prestressed anchor rods 6 has 12 prestressed anchor rods 6, with an interval of 30°, and the spacing between the two rows of prestressed anchor rods 6 is 250mm.

[0048] A construction process for a door frame wall rapid construction system comprises the following steps:

[0049] Step 1, select the door frame wall position and set the prestressed anchor rod 6; select the hole layout position of the prestressed anchor rod 6 according to the design, use the simple stand to drill holes according to the hole layout position; the drilling direction is 45° with the hole direction, and the hole is cleaned with high-pressure air after the hole is formed; after the pre-prepared prestressed anchor rod 6 is installed to the designed depth, cement slurry is injected into the hole, and the water-cement ratio is 0.4-0.5;

[0050] Step 2: roughen the hole wall. According to the position of the door frame wall, roughen the hole wall within the door frame wall and clean the floating dust on the hole wall.

[0051] Step 3, set the self-centering combined positioning ring 1; according to the position of the door frame wall, set two self-centering combined positioning rings 1, after the self-centering combined positioning rings 1 are spliced ​​into one, the distance to the inner ring hole wall is 600mm, and then use the rapid construction tool 3 to fix the combined positioning ring, so that the top shoe 311 of the rapid construction tool 3 is in contact with the spliced ​​part of the self-centering combined positioning ring 1, and then adjust the top shoe 311 by rotating the screw handwheel 309 to tighten the spliced ​​part of the self-centering combined positioning ring 1, and fine-adjust the position of the top shoe 311 by rotating the chuck handwheel 302, and make the self-centering combined positioning ring 1 fit tightly with the inner wall of the tunnel through the rapid construction mechanism, and then tighten the fastening screws on the self-centering combined positioning ring 1 to fix the self-centering combined positioning ring 1 axially in the tunnel; then remove the rapid construction tool 3;

[0052] Step 4, install the prefabricated telescopic steel mesh 4, place the prefabricated telescopic steel mesh 4 between the self-centering combined positioning rings 1 according to the position of the door frame wall, and tie and fasten it with the prestressed anchor rods 6 and the splicing panel 2 using iron wire;

[0053] Step 5, install the quick assembly door frame 5, place the quick assembly door frame 5 at the reserved door opening position of the prefabricated telescopic steel mesh 4, tie the anchor hook 504 on the quick assembly door frame 5 with the prefabricated telescopic steel mesh 4, and the door frame wall door opening adopts a double-side door frame tension structure;

[0054] Step 6: Install the splicing panel 2 located on the side away from the mouth, and the splicing panel 2 is connected on site in sequence through the tenon and the mortise; fix the splicing panel 2 to the prefabricated telescopic steel mesh 4 and the self-centering combined positioning ring 1 through tension bolts and steel bar binding;

[0055] Step 7, install the splicing panel 2 located on the side close to the mouth, splice the splicing panel 2 on site through the tenon and the mortise in turn, and then place it between the self-centering combined positioning ring 1 and the prefabricated telescopic steel mesh 4 located on the outside, and fix the splicing panel 2 located on the outside to the prefabricated telescopic steel mesh 4 and the self-centering combined positioning ring 1 with tension bolts and wire binding;

[0056] Step 8, install other reserved hole components; install other reserved hole components according to the design;

[0057] Step 9: Cast on site by pouring quick-setting concrete, complete the pouring in one go, and then perform maintenance.

Claims

1. A door frame wall rapid construction system, characterized in that: It includes a self-centering combined positioning ring, a splicing panel, a quick-assembled door frame, a prefabricated telescopic steel mesh, a quick-construction machine and a prestressed anchor rod. Two of the self-centering combined positioning rings are fixed on the inner wall of the tunnel by a quick-construction machine. Two splicing panels are arranged between the two self-centering combined positioning rings. The splicing panels are connected to the self-centering combined positioning rings by butt bolts. The self-centering combined positioning ring is composed of three-section positioning ring monomers. A prefabricated telescopic steel mesh is arranged between the two splicing panels. The prefabricated telescopic steel mesh and the splicing panel are fixedly connected by binding. Then, the quick-assembled door frame is installed at the reserved door opening of the prefabricated telescopic steel mesh. The quick-assembled door frame is connected to the prefabricated telescopic steel mesh by binding with an anchor hook. Then, the self-centering combined positioning ring, the splicing panel, the prefabricated telescopic steel mesh and the prestressed anchor rod are all encapsulated in concrete. The rapid construction tool comprises a three-jaw chuck, a chuck hand wheel is arranged in the adjustment hole of the outer cylindrical surface of the three-jaw chuck, the radial slide rail of the three-jaw chuck is slidably connected with the slide groove at one end of the expansion arm, the side wall of the expansion arm is rotatably connected with the claw of the three-jaw chuck through a pin, the three expansion arms are respectively connected with the corresponding ear seats on the shaft sleeve through a connecting rod and a pin shaft, the shaft sleeve is sleeved on the cylindrical guide rail, one end of the cylindrical guide rail is threadedly connected with the claw of the three-jaw chuck, the other end of the cylindrical guide rail and the three-jaw chuck are respectively fixed on two brackets, and the shaft A threaded sleeve is welded under the sleeve, and a lead screw is connected to the inner thread of the threaded sleeve. One end of the lead screw is connected to the bearing seat on the bracket of the fixed cylindrical guide rail, and the other end is connected to the inner circular surface of the three-jaw chuck through the bearing seat. The lead screw is located at one end of the three-jaw chuck and a lead screw handwheel is provided. The other end of the expansion arm is connected to one end of the moving arm, and the other end of the moving arm is connected to a top shoe through bolts. The rapid construction machine rests on the splicing part of the self-centering combined positioning ring through the top shoe, and the self-centering combined positioning ring is installed on the inner wall of the tunnel through the rapid construction machine.

2. A door frame wall rapid construction system according to claim 1, characterized in that: The cross-section of the positioning ring monomer is "L"-shaped, and a barb splicing joint I with a limit plate is provided at one end of the positioning ring monomer, and a barb splicing joint II is provided at the other end. The barb splicing joint II of one of the connected positioning ring monomers is radially inserted into the barb splicing joint I of the other positioning ring monomer, so that the two connected positioning ring monomers can achieve circumferential sliding. A threaded hole is opened on the barb splicing joint II, and a fastening screw is screwed into the threaded hole. The lower surface of the fastening screw is consistent with the surface shape of the sliding rail of the barb splicing joint I. When the barb splicing joint I and the barb splicing joint II are adjusted, the relative position of the barb splicing joint I and the barb splicing joint II is fixed by tightening the fastening screw.

3. A door frame wall rapid construction system according to claim 1, characterized in that: The spliced ​​panels are composed of panel No. 1, panel No. 2, panel No. 3, panel No. 4, panel No. 5, panel No. 6, panel No. 7, panel No. 8 and panel No.

9. Panel No. 1 is connected to panel No. 7 by mortise and tenon, panel No. 1 is connected to panel No. 2 by mortise and tenon, panel No. 2 is connected to panel No. 3 and panel No. 4 by mortise and tenon respectively, panel No. 3 and panel No. 4 are connected to panel No. 5 by mortise and tenon, panel No. 5 is connected to panel No. 6 by mortise and tenon, panel No. 6 is connected to panel No. 9 by mortise and tenon, panel No. 9 is connected to panel No. 8 by mortise and tenon, panel No. 8 is connected to panel No. 7 by mortise and tenon, and the tenon is made of elastic polymer material.

4. A door frame wall rapid construction system according to claim 1, characterized in that: The quick-assembled door frame consists of a frame, angle steel, rubber strip grooves, anchor hooks, and hinge fixing plates. An anchor hook is circumferentially arranged at one end of the frame panel, and an angle steel is circumferentially arranged at the other end. A rubber strip groove is arranged on the inner side of the angle steel, and hinge fixing plates are symmetrically arranged on the side walls of the frame.

5. A construction process based on the door frame wall rapid construction system according to claim 2, characterized in that: The following steps are involved: Step 1: Select the door frame wall position and set the prestressed anchor rod; select the prestressed anchor rod hole layout position according to the design, and use the simple stand to drill holes according to the layout position; use high-pressure air to clean the hole after the hole is formed; install the pre-prepared prestressed anchor rod to the designed depth, and then inject cement slurry into the hole with a water-cement ratio of 0.4~0.5; Step 2: roughen the hole wall. According to the position of the door frame wall, roughen the hole wall within the door frame wall and clean the floating dust on the hole wall. Step 3, set the self-centering combination positioning ring; according to the position of the door frame wall, set two self-centering combination positioning rings, after the self-centering combination positioning rings are spliced ​​into one, as for the inner ring hole wall, and then use the rapid construction tool to fix the combination positioning ring, so that the top shoe of the rapid construction tool contacts the splicing part of the self-centering combination positioning ring, and then adjust the top shoe by turning the screw handwheel to tighten the splicing part of the self-centering combination positioning ring, and slightly adjust the position of the top shoe by turning the chuck handwheel, and make the self-centering combination positioning ring fit closely with the inner wall of the tunnel through the rapid construction tool, and then tighten the fastening screws on the self-centering combination positioning ring to fix the self-centering combination positioning ring in the axial direction of the tunnel; then remove the rapid construction tool; Step 4: Install the prefabricated telescopic steel mesh. Place the prefabricated telescopic steel mesh between the self-centering combined positioning rings according to the position of the door frame wall, and tie and fasten it with the prestressed anchor rods and the splicing panel using wire; Step 5: Install the quick-assemble door frame and place it in the door opening position reserved by the prefabricated telescopic steel mesh, so that the anchor hook on the quick-assemble door frame is tied to the prefabricated telescopic steel mesh, and the door opening of the door frame wall adopts a double-side door frame tension structure; Step 6: Install the splicing panel on the side away from the mouth, and the splicing panel is connected on site in sequence through tenons and mortise grooves; fix the splicing panel to the prefabricated telescopic steel mesh and the self-centering combined positioning ring through tension bolts and steel bar binding; Step 7, install the splicing panel located on the side close to the mouth, splice the splicing panel on site through the tenon and the mortise in turn, and then place it between the self-centering combined positioning ring and the prefabricated telescopic steel mesh located on the outside, and fix the splicing panel located on the outside to the prefabricated telescopic steel mesh and the self-centering combined positioning ring with tension bolts and wire binding; Step 8, install other reserved hole components; install other reserved hole components according to the design; Step 9: Cast on site by pouring quick-setting concrete, complete the pouring in one go, and then perform maintenance.

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