A formwork support sliding assembly and construction method for underground comprehensive pipe gallery construction

Abstract

The present invention relates to the field of building construction technology, and in particular to a formwork support sliding assembly and construction method for underground integrated pipe gallery construction. A formwork support sliding assembly for underground integrated pipe gallery construction includes an inner mold trolley, an outer mold trolley, a slide rail component and a formwork system. The bottoms of the inner mold trolley and the outer mold trolley are provided with walking wheels, and the formwork system includes an inner wall formwork, an outer wall formwork and a top surface formwork; the inner mold trolley includes a door frame and a hydraulic cylinder, and a top support rod is also provided between the inner wall formworks. A horizontal pull rod is provided between the outer mold trolleys on the left and right sides of the pipe gallery structure. The outer mold trolley includes a bearing frame and a plurality of anchoring screws. A fixed sleeve is provided at the bottom of the bearing frame, and a limit hole is provided at a position corresponding to the fixed sleeve on the bottom plate of the pipe gallery, and the limit hole is used for the anchoring screw to extend into. With this structural setting, screw holes can be avoided from being left on the side wall structure of the pipe gallery, effectively reducing the risk of leakage in the later use of the pipe gallery.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a formwork support sliding assembly and a construction method for underground comprehensive pipe gallery construction. Background Art

[0002] The formwork trolley refers to a movable formwork device used for reinforced concrete structures of the same cross section in narrow and long structures such as tunnels or pipe galleries. Its purpose is to replace the traditional formwork support method and use a fixed formwork construction device to support the formwork in place at one time for steel bar binding and concrete pouring. In the cast-in-place underground comprehensive pipe gallery concrete structure, steel or aluminum formwork is usually used as the formwork trolley structure system.

[0003] For example, the Chinese invention patent with application number CN202210916751.2 discloses a self-propelled steel formwork trolley for comprehensive pipe gallery construction, which includes an inner formwork trolley located in the pipe gallery and an outer formwork of the pipe gallery located outside the pipe gallery; the inner formwork trolley includes a portal frame, a walking mechanism supported at the foot of the portal frame, an inner formwork track arranged below the walking mechanism, an inner formwork assembly installed at the top and both sides of the portal frame, and an inner formwork screw support mechanism connected between the portal frame and the inner formwork assembly; the portal frame foot is respectively fixedly connected to the outer side of the portal frame longitudinal beam; a jack opposite to the inner formwork track is fixedly installed at the bottom of the portal frame, and a slot matching the inner formwork track is fixedly connected at the lower end of the jack; the outer formwork of the pipe gallery adopts a full-steel large formwork structure, a reaction frame is fixedly connected to the back of the outer formwork of the pipe gallery, and two reaction frames opposite to each other on both sides are connected by an external screw; the lower part of the outer formwork of the pipe gallery is connected to the side wall of the pipe gallery by an outer formwork support screw, and the outer formwork support screw passes through the side wall of the pipe gallery. The above technical solution is adopted, and the screw adjustment is used to realize the contraction and expansion of the formwork in the tunnel; when the gantry falls, the lower end slot of the jack can be against the inner mold track to improve stability; the formwork trolley is used for integral casting and overall transfer to realize rapid turnover of the formwork, which can be pushed forward in sequence at one time. The scheme adopts mechanized one-line flow operation for formwork placement, concrete pouring, and demolding, which saves the time of formwork handling, assembly and support compared with traditional combined formwork. Calculated as a standard section of 30 meters, the assembly of traditional combined steel formwork and scaffolding erection requires a total of 4 to 5 days, while the use of this scheme only takes half a day. The use of steel formwork trolleys has greatly shortened the construction time of scaffolding and supporting formwork. However, there are still some shortcomings, as described below:

[0004] In actual use, the formwork trolley of the above structure uses an external formwork support screw that penetrates the side wall of the corridor to fix the external formwork of the corridor, so as to prevent the expansion of the formwork during the concrete pouring process. However, with such a structural setting, screw holes will be formed on the side wall of the corridor after the concrete is formed. On the one hand, this will increase the workload of plugging the screw holes in the later stage; on the other hand, it will also destroy the overall integrity of the corridor, thereby affecting the waterproof performance of the corridor and increasing the risk of leakage in the later use of the corridor.

[0005] Therefore, when using a template trolley to construct a pipe gallery, how to avoid leaving screw holes on the side wall structure of the pipe gallery is a technical problem that needs to be solved urgently in the prior art. Summary of the invention

[0006] The purpose of the present invention is to fix the external formwork of the pipe gallery in the prior art by using an external formwork support screw rod that penetrates the side wall of the pipe gallery to prevent the phenomenon of mold expansion during concrete pouring. However, with such a structural setting, screw holes will be formed on the side wall of the pipe gallery after the concrete is formed. On the one hand, this will increase the workload of plugging the screw holes in the later stage; on the other hand, it will also destroy the integrity of the pipe gallery as a whole, thereby affecting the waterproof performance of the pipe gallery and increasing the risk of leakage in the later use of the pipe gallery. A formwork support sliding assembly and construction method for underground comprehensive pipe gallery construction are provided.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is:

[0008] A template support sliding assembly for underground comprehensive pipe gallery construction includes an inner mold trolley, an outer mold trolley, a slide rail component and a template system. The inner mold trolley is arranged in the cavity of the pipe gallery, and the outer mold trolley is arranged on the left and right sides of the pipe gallery.

[0009] The slide rail component is arranged on the bottom plate of the pipe gallery structure, and the slide rail component is arranged in the length direction corresponding to the extension of the pipe gallery. The slide rail component includes an inner slide rail and an outer slide rail. The inner slide rail is arranged in the area of ​​the pipe gallery bottom plate corresponding to the inner mold trolley, and the outer slide rail is arranged in the area of ​​the pipe gallery bottom plate corresponding to the outer mold trolley; the bottom of the inner mold trolley and the outer mold trolley are provided with running wheels, and the inner mold trolley and the outer mold trolley are moved along the slide rail component by applying a push / pull force on the inner mold trolley and the outer mold trolley;

[0010] The template system includes an inner wall template, an outer wall template and a top surface template. The outer wall template is arranged on the outer template trolley, and the outer wall template corresponds to the outer surface of the side wall of the pipe gallery; the inner wall template and the top surface template are arranged on the inner template trolley, and the inner wall template and the top surface template are an integrated structure. The inner wall template corresponds to the inner surface of the side wall of the pipe gallery, and the top surface template corresponds to the top surface of the pipe gallery structure. The inner wall template, the outer wall template and the top surface template cooperate with each other to form a casting cavity of the pipe gallery structure;

[0011] The inner mold trolley includes a gantry and a hydraulic cylinder, the travel wheel is arranged at the bottom of the gantry, the hydraulic cylinder is arranged at the top of the gantry, the top surface template is connected to the hydraulic cylinder, the hydraulic cylinder is used to adjust the spacing width between the top surface template and the top of the gantry, and a top support rod is also arranged between the inner wall templates, and the top support rod is used to maintain the spacing width between the inner wall templates;

[0012] A horizontal pull rod is arranged between the outer mold trolleys on the left and right sides of the pipe gallery structure, and the horizontal pull rod is connected to the top of the outer mold trolley, and the horizontal pull rod is used to maintain the spacing distance between the outer mold trolleys on the left and right sides of the pipe gallery; the outer mold trolley includes a bearing frame and a plurality of anchoring screws, the exterior wall formwork is connected to the bearing frame, and a fixing sleeve is arranged at the bottom of the bearing frame, and the fixing sleeve is arranged perpendicular to the bottom plate of the pipe gallery, and the inner diameter of the fixing sleeve matches the outer diameter of the anchoring screw, and the anchoring screw is inserted into the fixing sleeve, and the anchoring screw can slide in the fixing sleeve, and a limiting hole is also arranged at a position of the bottom plate of the pipe gallery corresponding to the fixing sleeve, and the diameter of the limiting hole matches the diameter of the anchoring screw, and the limiting hole is used for the anchoring screw to extend into, and after the anchoring screw extends into the limiting hole, the end of the anchoring screw away from the bottom plate of the pipe gallery exceeds the top of the fixing sleeve.

[0013] Preferably, an adjusting bolt is also provided on the anchoring screw, and the adjusting bolt and the anchoring screw are threadedly connected. The adjusting bolt is arranged corresponding to the two ends of the fixing sleeve, and the anchoring screw can be fixed by screwing the adjusting bolt to make it abut against the two ends of the fixing sleeve.

[0014] Preferably, an armpit corner template is provided between the top surface template and the inner wall template, and an obtuse angle is formed between the armpit corner template, the top surface template and the inner wall template.

[0015] Preferably, the inner wall formwork and the armpit corner formwork are rotatably connected, and the rotation direction of the inner wall formwork is toward one side of the door frame; a hydraulic diagonal brace is also provided between the inner wall formwork and the top surface formwork, and the hydraulic diagonal brace can be extended or shortened with the rotation of the inner wall formwork.

[0016] Preferably, a first fixing seat is provided on the inner wall formwork on one side, and a clamping groove is provided on the inner wall formwork on the other side, one end of the top support rod is connected to the first fixing seat, and the other end extends into the clamping groove, and a rubber friction head is also provided at the end of the top support rod corresponding to the clamping groove, the top support rod and the first fixing seat are rotatably connected, and the clamping groove limits the top support rod to rotate only within the width of its groove, and the clamping groove is divided into a first groove area and a second groove area along the vertical direction of the inner wall formwork, when the end of the top support rod is located in the first groove area, the rubber friction head abuts against the groove bottom of the first groove area; when the end of the top support rod is located in the second groove area, the rubber friction head forms a gap with the groove bottom of the second groove area.

[0017] Preferably, the second groove area is arranged below the first groove area.

[0018] Preferably, the top support rods are arranged in two rows, one of which is arranged on one side of the top surface template, and the other is arranged on the side of the bottom plate of the pipe gallery, and the first fixing seats for fixing the two top support rods are respectively arranged on the inner wall templates on the left and right sides.

[0019] Preferably, the inner slide rail includes a bearing plate and an inner track arranged on the bearing plate, the bearing plate is fixed on the bottom plate of the pipe gallery, and a second fixed seat is also provided at the bottom of the inner wall formwork, and a diagonal support rod is rotatably connected to the second fixed seat, and the length of the diagonal support rod is adjustable. A limiting groove is also provided on the bearing plate, and the limiting groove is used to accommodate the end of the diagonal support rod.

[0020] Preferably, the inner wall formwork is composed of a plurality of inner formwork units, and the adjacent inner formwork units are connected as a whole by pins and pin pieces. The inner formwork unit includes a first inner wall panel and a second inner wall panel. The first inner wall panel is connected to the armpit corner formwork, and the second inner wall panel is connected to the first inner wall panel. The connection part of the first inner wall panel and the second inner wall panel is located at the top area of ​​the guide wall integrally formed with the bottom plate of the pipe gallery, and the second fixing seat is arranged on the second inner wall panel.

[0021] A slider is provided at the end of the first inner wall panel, and a slide groove is provided at the end of the second inner wall panel. The central axis of the slide groove is perpendicular to the central axis of the top surface of the guide wall body formed integrally with the bottom plate of the pipe gallery, and a gap is provided between the two ends of the slide groove and the edge line of the cross section of the second inner wall panel. The slider is clamped in the slide groove.

[0022] Knock on the first inner wall panel so that the bottom edge of the first inner wall panel applies pressure to the edge of the top area of ​​the guide wall integrally formed with the bottom plate of the corridor. Under the action of pressure, the concrete in this area can be broken, and then the end of the first inner wall panel slides a distance into the side wall range of the corridor.

[0023] A construction method of a template support sliding assembly for underground comprehensive pipe gallery construction comprises the following steps:

[0024] A. Construction of pipe gallery bottom plate and guide wall: pour the bottom plate and guide wall of the pipe gallery to form the working plane of the template trolley;

[0025] B. Installing the template support sliding assembly: installing the inner mold trolley and the outer mold trolley on the base of the pipe gallery bottom plate and the guide wall formed in step A to form a casting cavity for the side wall and the top plate of the pipe gallery;

[0026] C. Adjust the fixed position of the inner wall formwork: After the formwork support sliding assembly is installed, adjust the fixed position of the inner wall formwork so that the concrete contact surface of the inner wall formwork coincides with the edge line of the side wall of the pipe gallery to be poured;

[0027] D. Casting the side walls and top slab of the pipe gallery: Casting the concrete of the side walls and top slab of the pipe gallery to make the pipe gallery structure closed and formed;

[0028] E. Demoulding and turnover of the formwork trolley: After the side walls and top plate of the tunnel reach the designed strength in step D, the inner and outer formwork trolleys are demolded and slid to the next construction section.

[0029] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0030] 1. The formwork support sliding assembly for underground comprehensive pipe gallery construction described in the present invention, wherein the top support rod is arranged between the inner wall formworks to maintain the spacing width between the inner wall formworks; the horizontal pull rod is arranged between the outer formwork trolleys on the left and right sides of the pipe gallery structure, and the anchor screw is arranged at the bottom of the bearing frame to cooperate with the limit hole, so as to maintain the spacing distance between the outer formwork trolleys on the left and right sides of the pipe gallery, so that the inner wall formwork and the outer wall formwork can be effectively prevented from expanding and displacing during the concrete pouring construction of the pipe gallery, thereby ensuring the molding quality of the pipe gallery concrete; further, adopting this structural setting can also avoid leaving screw holes on the side wall structure of the pipe gallery, thereby ensuring the integrity of the pipe gallery structure and effectively reducing the risk of leakage in the later use of the pipe gallery;

[0031] 2. A formwork support sliding assembly for underground integrated pipe gallery construction described in the present invention has a first fixed seat on the inner wall formwork on one side, and a clamping groove on the inner wall formwork on the other side. One end of the top support rod is connected to the first fixed seat, and the other end extends into the clamping groove. A rubber friction head is also provided at the end of the top support rod corresponding to the clamping groove. The top support rod and the first fixed seat are rotatably connected, and the clamping groove limits the top support rod to rotate only within the width of its groove. The clamping groove is divided into a first groove area and a second groove area along the vertical direction of the inner wall formwork. When the end of the top support rod is located in the first groove area, the rubber friction head and The groove bottoms of the first groove areas are in contact with each other; when the end of the top support rod is located in the second groove area, the rubber friction head forms a gap with the groove bottom of the second groove area; adopting this structural setting can make the installation and disassembly of the top support rod more convenient, thereby improving the convenience of the present invention in actual use; on the other hand, during the demoulding operation of the inner wall formwork, the end of the top support rod can be adjusted to the second groove area, and then the top support rod is rotated to make its end hit the side wall of the second groove area, so that the inner wall formwork can be more thoroughly separated from the concrete surface under the impact force generated by the collision between the two, thereby further improving the practicality of the present invention in actual construction use;

[0032] 3. A formwork support sliding assembly for underground integrated pipe gallery construction according to the present invention, wherein the inner wall formwork is composed of a plurality of inner formwork units, and the adjacent inner formwork units are connected as a whole by pins and pins, and the inner formwork unit includes a first inner wall panel and a second inner wall panel, the first inner wall panel is connected to the armpit corner formwork, the second inner wall panel is connected to the first inner wall panel, the connection portion of the first inner wall panel and the second inner wall panel is located at the top area of ​​the guide wall integrally formed with the pipe gallery bottom plate, the second fixing seat is arranged on the second inner wall panel, and the first inner wall panel A slider is provided at the end of the second inner wall panel body, and a slide groove is provided at the end of the second inner wall panel body. The central axis of the slide groove is perpendicular to the central axis of the top surface of the guide wall body integrally formed with the bottom plate of the pipe gallery, and a gap is provided between the two ends of the slide groove and the edge line of the cross-section of the second inner wall panel body. The slider is clamped in the slide groove and knocks the first inner wall panel body, so that the bottom edge of the first inner wall panel body applies pressure on the edge of the top area of ​​the guide wall body integrally formed with the bottom plate of the pipe gallery, and the concrete in this area can be broken under the action of pressure, and then the end of the first inner wall panel body slides a distance into the side wall range of the pipe gallery. This structural setting can ensure that the concrete contact surface of the first inner wall panel body always coincides with the edge line of the side wall of the tunnel to be cast after the formwork is set, thereby further ensuring the molding quality of the tunnel; further, in the operation of adjusting the fixed position of the first inner wall panel body to slide a certain distance into the side wall range of the tunnel, the concrete at the edge of the top area of ​​the guide wall body integrally formed with the tunnel bottom plate can be broken, so that the new and old concrete surfaces of the tunnel side wall can be more densely combined, thereby reducing the risk of leakage in this part; further, in the embodiment of the first inner wall panel body After the body slides a certain distance into the side wall range of the tunnel, a part of the end of the first inner wall panel body can abut against the formed tunnel side wall concrete, thereby improving the fit tightness between the end of the first inner wall panel body and the guide wall body integrally formed with the tunnel bottom plate, and further during the pouring construction, the total amount of concrete slurry leaking into the second inner wall panel body area can be effectively reduced, thereby effectively suppressing the leakage of concrete slurry into the slide groove, ensuring the smoothness of the sliding cooperation between the first inner wall panel body and the second inner wall panel body, thereby further improving the practicability of the present invention in actual construction use. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of a formwork support sliding assembly for underground comprehensive pipe gallery construction;

[0034] Figure 2 yes Figure 1 The structural diagram of A in the figure;

[0035] Figure 3 yes Figure 1 Schematic diagram of the structure of B;

[0036] Figure 4 is a structural schematic diagram of adjusting the concrete contact surface of the first inner wall panel to coincide with the edge line of the side wall of the pipe gallery;

[0037] Figure 5 is a schematic diagram of the cross-sectional structure of the joint between the first inner wall panel and the second inner wall panel;

[0038] Figure 6 The invention is a flow chart of a construction method of a formwork support sliding assembly for underground comprehensive pipe gallery construction.

[0039] Markings in the figure: 1-inner mold trolley, 2-outer mold trolley, 3-slide rail component, 4-formwork system, 5-inner wall formwork, 6-outer wall formwork, 7-top surface formwork, 8-gantry, 9-hydraulic cylinder, 10-top support rod, 11-horizontal pull rod, 12-anchor screw, 13-fixed sleeve, 14-limiting hole, 15-adjusting bolt, 16-axillary corner formwork, 17-hydraulic diagonal support, 18-first fixed seat, 19-clamping groove, 20-rubber friction head, 21-first groove area, 22-second groove area, 23-inner slide rail, 24-outer slide rail, 25-travel wheel, 26-bearing plate, 27-inner rail, 28-second fixed seat, 29-diagonal support rod, 30-limiting groove, 31-first inner wall panel, 32-second inner wall panel, 33-slider, 34-slide groove, 35-bearing frame. DETAILED DESCRIPTION

[0040] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0041] To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them.

[0042] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the invention claimed for protection, but merely represents some embodiments of the present invention. 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.

[0043] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0044] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0045] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invention product is usually placed when in use, or the orientation or positional relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0046] Example 1: Figure 1 and Figure 3 As shown, a formwork support sliding assembly for underground comprehensive pipe gallery construction according to the present invention comprises an inner mold trolley 1, an outer mold trolley 2, a slide rail component 3 and a formwork system 4. The inner mold trolley 1 is arranged in the cavity of the pipe gallery, and the outer mold trolley 2 is arranged on the left and right sides of the pipe gallery.

[0047] The slide rail component 3 is arranged on the bottom plate of the pipe gallery structure, and the slide rail component 3 is arranged in the length direction corresponding to the extension of the pipe gallery. The slide rail component 3 includes an inner slide rail 23 and an outer slide rail 24. The inner slide rail 23 is arranged in the area of ​​the pipe gallery bottom plate corresponding to the inner mold trolley 1, and the outer slide rail 24 is arranged in the area of ​​the pipe gallery bottom plate corresponding to the outer mold trolley 2; the bottom of the inner mold trolley 1 and the outer mold trolley 2 are provided with walking wheels 25, and the inner mold trolley 1 and the outer mold trolley 2 can be moved along the slide rail component 3 by applying a push / pull force on the inner mold trolley 1 and the outer mold trolley 2;

[0048] The template system 4 includes an inner wall template 5, an outer wall template 6 and a top surface template 7. The outer wall template 6 is arranged on the outer template trolley 2, and the outer wall template 6 corresponds to the outer surface of the side wall of the pipe gallery; the inner wall template 5 and the top surface template 7 are arranged on the inner template trolley 1, and the inner wall template 5 and the top surface template 7 are an integrated structure. The inner wall template 5 corresponds to the inner surface of the side wall of the pipe gallery, and the top surface template 7 corresponds to the top surface of the pipe gallery structure. The inner wall template 5, the outer wall template 6 and the top surface template 7 cooperate with each other to form a casting cavity of the pipe gallery structure;

[0049] The inner mold trolley 1 includes a gantry 8 and a hydraulic cylinder 9, the walking wheel 25 is arranged at the bottom of the gantry 8, the hydraulic cylinder 9 is arranged at the top of the gantry 8, the top surface template 7 is connected to the hydraulic cylinder 9, and the hydraulic cylinder 9 is used to adjust the spacing width between the top surface template 7 and the top of the gantry 8. A top support rod 10 is also arranged between the inner wall templates 5, and the top support rod 10 is used to maintain the spacing width between the inner wall templates 5;

[0050] A horizontal tie rod 11 is arranged between the outer mold trolleys 2 on the left and right sides of the pipe gallery structure, and the horizontal tie rod 11 is connected to the top of the outer mold trolley 2. The horizontal tie rod 11 is used to maintain the spacing distance between the outer mold trolleys 2 on the left and right sides of the pipe gallery; the outer mold trolley 2 includes a bearing frame 35 and a plurality of anchoring screws 12, the outer wall formwork 6 is connected to the bearing frame 35, and a fixed sleeve 13 is arranged at the bottom of the bearing frame 35, and the fixed sleeve 13 is arranged perpendicular to the bottom plate of the pipe gallery, and the inner diameter of the fixed sleeve 13 is the same as that of the outer mold trolley 2. The outer diameter of the anchor screw 12 is matched, the anchor screw 12 is inserted into the fixing sleeve 13, and the anchor screw 12 can slide in the fixing sleeve 13. A limiting hole 14 is also provided at a position of the pipe gallery floor corresponding to the fixing sleeve 13. The diameter of the limiting hole 14 matches the diameter of the anchor screw 12. The limiting hole 14 is used for the anchor screw 12 to extend therein, and after the anchor screw 12 extends into the limiting hole 14, the end of the anchor screw 12 away from the pipe gallery floor exceeds the top of the fixing sleeve 13.

[0051] By adopting the formwork support sliding assembly for underground comprehensive pipe gallery construction described in the present invention, the top support rod 10 is arranged between the inner wall formworks 5 to maintain the spacing width between the inner wall formworks 5; the horizontal pull rod 11 is arranged between the outer formwork trolleys 2 on the left and right sides of the pipe gallery structure, and the anchor screw 12 is arranged at the bottom of the supporting frame body 35 to cooperate with the limiting hole 14, which can maintain the spacing distance of the outer formwork trolleys 2 on the left and right sides of the pipe gallery. In this way, the inner wall formworks 5 and the outer wall formworks 6 can be effectively prevented from expanding and displacing during the concrete pouring construction of the pipe gallery, thereby ensuring the molding quality of the pipe gallery concrete; further, by adopting this structural setting, it is also possible to avoid leaving screw holes on the side wall structure of the pipe gallery, thereby ensuring the integrity of the pipe gallery structure and effectively reducing the risk of leakage in the later use of the pipe gallery.

[0052] Specifically, in actual construction and use, the present invention applies a pulling / pushing force to the inner mold trolley 1 and the outer mold trolley 2, so that the inner mold trolley 1 and the outer mold trolley 2 are moved along the slide rail component 3 to the pipe gallery section of the section to be cast, and then the top surface template 7 is lifted to the top surface elevation of the pipe gallery by using the hydraulic cylinder 9, and then the top support rod 10 is erected between the inner wall templates 5 on both sides, so as to complete the fixing of the top surface template 7 and the inner wall template 5; in this embodiment, a mounting seat is provided on the inner wall template 5, and the end of the top support rod 10 is clamped in the mounting seat to complete the installation;

[0053] When fixing the outer mold trolley 2, the drill bit of the impact drill is passed through the limiting hole 14, and the limiting hole 14 is opened on the bottom plate of the pipe gallery by using the impact drill. After the limiting hole 14 is opened, the anchor screw 12 is passed from the fixing sleeve 13 into the limiting hole 14. In this embodiment, the horizontal pull rod 11 and the outer mold trolley 2 are an integrated structure, so that the consistency of the movement of the outer mold trolley 2 on the left and right sides of the pipe gallery can be maintained, and the convenience of the movement of the outer mold trolley 2 is improved;

[0054] After the tunnel concrete is cast and formed, when the inner wall formwork 5 and the top surface formwork 7 in the cavity are demolded, the top support rod 10 is first removed, and then the hydraulic cylinder 9 is controlled to contract. Under the action of the downward pulling force applied by the hydraulic cylinder 9, the top surface formwork 7 and the inner wall formwork 5 are separated from the tunnel concrete surface, and then the inner formwork trolley 1 is pushed / pulled to move it to the next casting section; when the outer wall formwork 6 is demolded, the anchor screw 12 is pulled out, and the support frame 35 is vertically lifted by a jack, so that the outer wall formwork 6 can be separated from the tunnel concrete surface, and then the inner formwork trolley 1 is pushed / pulled to move it to the next casting section.

[0055] It should be noted that in this embodiment, the overall structure of the pipe gallery is cast in two steps: the first step is to cast the bottom plate structure of the pipe gallery and a portion of the side walls of the pipe gallery, and the second step is to cast the top plate of the pipe gallery and the remaining side walls of the pipe gallery.

[0056] As a preferred embodiment, on the basis of the above manner, further, the anchoring screw 12 is provided with an adjusting bolt 15, the adjusting bolt 15 and the anchoring screw 12 are threadedly connected, the adjusting bolt 15 is provided corresponding to the two ends of the fixing sleeve 13, and the adjusting bolt 15 is screwed to abut against the two ends of the fixing sleeve 13 to fix the anchoring screw 12. With this structural setting, the stability of the anchoring screw 12 connected to the bearing frame 35 can be improved, and the risk of the anchoring screw 12 accidentally coming out of the limiting hole 14 and the fixing sleeve 13 during construction can be reduced.

[0057] Example 2: Figures 1 to 3 As shown, the template support sliding assembly for underground comprehensive pipe corridor construction described in the present invention is based on the above method, and further, an armpit corner template 16 is arranged between the top surface template 7 and the inner wall template 5, and an obtuse angle is formed between the armpit corner template 16 and the top surface template 7 and the inner wall template 5.

[0058] In this embodiment, the armpit corner formwork 16 is provided to disperse the extrusion force acting on the angle area between the top surface formwork 7 and the inner wall formwork 5 when the concrete solidifies and expands, so that when the demolding operation is performed, the top surface formwork 7 and the inner wall formwork 5 located in the inner corner area of ​​the corridor can be more easily separated from the concrete, thereby improving the practicality of the present invention in construction use; further, the armpit corner formwork 16 can also strengthen the structural strength of the inner corner of the corridor.

[0059] As a preferred implementation scheme, based on the above method, further, the inner wall formwork 5 and the armpit corner formwork 16 are rotatably connected, and the rotation direction of the inner wall formwork 5 is toward one side of the door frame 8; a hydraulic diagonal brace 17 is also provided between the inner wall formwork 5 and the top surface formwork 7, and the hydraulic diagonal brace 17 can be extended or shortened with the rotation of the inner wall formwork 5.

[0060] Specifically, in the present embodiment, when the inner mold trolley 1 is moved, the inner wall formwork 5 can be rotated toward the side of the gantry 8, so as to increase the spacing width between the concrete contact surface of the inner wall formwork 5 and the side wall of the tunnel. In this way, on the one hand, the smoothness of the movement of the inner mold trolley 1 can be ensured; on the other hand, the friction between the concrete contact surface of the inner wall formwork 5 and the side wall of the tunnel is avoided during the movement of the inner mold trolley 1, which causes the concrete contact surface of the inner wall formwork 5 to wear and affect the forming quality of the tunnel; further, in the present embodiment, the hydraulic diagonal brace 17 is provided to enhance the structural strength of the junction area between the armpit corner formwork 16 and the inner wall formwork 5 and the top surface formwork 7, reduce the risk of deformation in this area during concrete pouring construction, and further ensure the forming quality of the tunnel.

[0061] As a preferred embodiment, on the basis of the above method, further, a first fixed seat 18 is provided on the inner wall formwork 5 on one side, and a clamping groove 19 is provided on the inner wall formwork 5 on the other side, one end of the top support rod 10 is connected to the first fixed seat 18, and the other end extends into the clamping groove 19, and a rubber friction head 20 is also provided at the end of the top support rod 10 corresponding to the clamping groove 19, the top support rod 10 and the first fixed seat 18 are rotatably connected, and the clamping groove 19 limits the top support rod 10 to rotate only within the width of its groove, and the clamping groove 19 is divided into a first groove area 21 and a second groove area 22 along the vertical direction of the inner wall formwork 5, when the end of the top support rod 10 is located in the first groove area 21, the rubber friction head 20 abuts against the groove bottom of the first groove area 21; when the end of the top support rod 10 is located in the second groove area 22, the rubber friction head 20 forms a gap with the groove bottom of the second groove area 22.

[0062] Specifically, in this embodiment, when the top support rod 10 is used to maintain the spacing width between the inner wall formworks 5, the end of the top support rod 10 needs to be adjusted to the first groove area 21; when the inner mold trolley 1 is moved, the end of the top support rod 10 needs to be adjusted to the second groove area 22; adopting this structural setting can make the installation and disassembly of the top support rod 10 more convenient, thereby improving the convenience of the present invention in actual use;

[0063] On the other hand, in the demolding operation of the interior wall formwork 5 of the present embodiment, the end of the top support rod 10 can be adjusted to the second groove area 22, and then the top support rod 10 is rotated so that its end hits the side wall of the second groove area 22. In this way, the interior wall formwork 5 can be more thoroughly separated from the concrete surface under the impact force generated by the collision between the two, thereby further improving the practicability of the present invention in actual construction use.

[0064] As a preferred embodiment, based on the above method, further, the second groove area 22 is arranged below the first groove area 21. With this structural arrangement, when the top support rod 10 hits the side wall of the second groove area 22, the weight of the top support rod 10 itself can be effectively superimposed, so that the impact force generated when the top support rod 10 hits the side wall of the second groove area 22 can be increased.

[0065] As a preferred embodiment, based on the above method, further, the top support rod 10 is set in two rows, one of which is set close to the side of the top surface formwork 7, and the other is set close to the bottom plate side of the pipe gallery, and the first fixing seat 18 for fixing the two top support rods 10 is respectively set on the left and right sides of the inner wall formwork 5. With this structural setting, the impact force generated by the top support rod 10 hitting the second groove area 22 can be more evenly distributed on the inner wall formwork 5 on both sides of the pipe gallery, and the two top support rods 10 can hit the inner wall formwork 5 on both sides of the pipe gallery respectively, so that the inner wall formwork 5 can be better separated from the concrete surface, further improving the practicality of the present invention in actual construction use.

[0066] As a preferred implementation scheme, based on the above method, further, the inner slide rail 23 includes a bearing plate 26 and an inner track 27 arranged on the bearing plate 26, the bearing plate 26 is fixed on the bottom plate of the pipe gallery, and a second fixed seat 28 is also provided at the bottom of the inner wall formwork 5, and a diagonal support rod 29 is rotatably connected to the second fixed seat 28, and the length of the diagonal support rod 29 is adjustable. A limiting groove 30 is also provided on the bearing plate 26, and the limiting groove 30 is used to accommodate the end of the diagonal support rod 29.

[0067] Specifically, in this embodiment, the diagonal support rod 29 is used to apply pressure to the bottom area of ​​the inner wall formwork 5, so that the bottom area of ​​the inner wall formwork 5 can be more closely fitted with the guide wall body formed integrally with the bottom plate of the pipe gallery, thereby reducing or even avoiding the seepage of cement slurry during concrete pouring construction, and further improving the practicality of the present invention in actual construction use; on the other hand, the diagonal support rod 29 can also enhance the reinforcement effect of the inner wall formwork 5, reduce the risk of deformation and displacement of the inner wall formwork 5 during concrete pouring construction, and further ensure the molding quality of the pipe gallery.

[0068] Example 3: Figure 1 , Figure 4 and Figure 5 As shown, the template support sliding assembly for underground comprehensive pipe gallery construction described in the present invention, based on the above method, further, the inner wall template 5 is composed of multiple inner template units, and the adjacent inner template units are connected as a whole by pins and pins, and the inner template unit includes a first inner wall panel 31 and a second inner wall panel 32, the first inner wall panel 31 is connected to the armpit corner template 16, and the second inner wall panel 32 is connected to the first inner wall panel 31. The connection part of the first inner wall panel 31 and the second inner wall panel 32 is located at the top area of ​​the guide wall integrally formed with the bottom plate of the pipe gallery, and the second fixing seat 28 is arranged on the second inner wall panel 32.

[0069] A slider 33 is provided at the end of the first inner wall panel 31, and a slide groove 34 is provided at the end of the second inner wall panel 32. The central axis of the slide groove 34 is perpendicular to the central axis of the top surface of the guide wall body formed integrally with the bottom plate of the pipe gallery, and a gap is provided between the two ends of the slide groove 34 and the edge line of the cross section of the second inner wall panel 32. The slider 33 is clamped in the slide groove 34.

[0070] The first inner wall panel 31 is struck so that the bottom edge of the first inner wall panel 31 applies pressure to the edge of the top area of ​​the guide wall integrally formed with the bottom plate of the corridor. The concrete in this area can be broken under the action of pressure, and then the end of the first inner wall panel 31 slides a distance into the side wall range of the corridor.

[0071] In the present embodiment, it is taken into consideration that during the pouring construction of the tunnel concrete, the guide wall formed integrally with the tunnel floor may be uneven, and as a result, during the template support process, the concrete contact surface of the inner wall template 5 may not coincide with the edge line of the tunnel side wall to be poured, resulting in an error between the actual size of the tunnel cavity and the designed size, thereby affecting the installation of equipment in the tunnel. Based on this, in this embodiment, a slidable connection is provided between the first inner wall panel 31 and the second inner wall panel 32. During the process of supporting the formwork, if the concrete contact surface of the inner wall formwork 5 is located outside the edge line of the side wall of the corridor, the second inner wall panel 32 is first fixed by the diagonal support rod 29, and then the inner formwork unit that needs to be adjusted is separated. After completion, the first inner wall panel 31 is struck with a hammer. Under the action of the impact force generated by the hammer, the concrete at the edge of the top area of ​​the guide wall integrally formed with the bottom plate of the corridor is broken, and then the end of the first inner wall panel 31 slides a distance into the side wall range of the corridor, so that the concrete contact surface of the first inner wall panel 31 can coincide with the edge line of the side wall of the corridor to be cast. This structural setting can ensure that the concrete contact surface of the first inner wall panel 31 always coincides with the edge line of the side wall of the tunnel to be cast after the formwork is set, thereby further ensuring the molding quality of the tunnel; further, in the present embodiment, when adjusting the fixed position of the first inner wall panel 31 to slide a certain distance into the side wall range of the tunnel, the concrete at the edge of the top area of ​​the guide wall integrally formed with the tunnel bottom plate can be broken, so that the new and old concrete surfaces of the side wall of the tunnel can be more densely combined, thereby reducing the risk of leakage in this area; further, in the present embodiment, the first inner wall panel 31 is moved toward the tunnel After sliding a certain distance within the side wall of the corridor, a portion of the end of the first inner wall panel 31 can abut against the formed concrete of the side wall of the corridor, thereby improving the fit between the end of the first inner wall panel 31 and the guide wall integrally formed with the bottom plate of the corridor, and further during the pouring construction, the total amount of concrete slurry leaking into the area of ​​the second inner wall panel 32 can be effectively reduced, thereby effectively suppressing the leakage of concrete slurry into the slide groove 34, ensuring the smoothness of the sliding fit between the first inner wall panel 31 and the second inner wall panel 32, thereby further improving the practicability of the present invention in actual construction use.

[0072] Example 4: Figures 1 to 6 As shown, the construction method of a formwork support sliding assembly for underground comprehensive pipe gallery construction according to the present invention comprises the following steps:

[0073] A. Construction of pipe gallery bottom plate and guide wall: pour the bottom plate and guide wall of the pipe gallery to form the working plane of the template trolley;

[0074] B. Installing the template support sliding assembly: Installing the inner mold trolley 1 and the outer mold trolley 2 on the base of the pipe gallery bottom plate and the guide wall formed in step A to form a casting cavity for the side wall and the top plate of the pipe gallery;

[0075] C. Adjust the fixed position of the inner wall formwork 5: After the formwork support sliding assembly is installed, adjust the fixed position of the inner wall formwork 5 so that the concrete contact surface of the inner wall formwork 5 coincides with the edge line of the side wall of the pipe gallery to be poured;

[0076] D. Casting the side walls and top slab of the pipe gallery: Casting the concrete of the side walls and top slab of the pipe gallery to make the pipe gallery structure closed and formed;

[0077] E. Demoulding and turnover of the formwork trolley: After the side walls and top plate of the pipe gallery reach the designed strength in step D, the inner mould trolley 1 and the outer mould trolley 2 are demoulded and slid to the next construction section.

[0078] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A formwork support sliding assembly for underground comprehensive pipe gallery construction, characterized in that: It includes an inner mold trolley, an outer mold trolley, a slide rail component and a template system. The inner mold trolley is arranged in the cavity of the pipe gallery, and the outer mold trolley is arranged on the left and right sides of the pipe gallery. The slide rail component is arranged on the bottom plate of the pipe gallery structure, and the slide rail component is arranged in the length direction corresponding to the extension of the pipe gallery. The slide rail component includes an inner slide rail and an outer slide rail. The inner slide rail is arranged in the area of ​​the pipe gallery bottom plate corresponding to the inner mold trolley, and the outer slide rail is arranged in the area of ​​the pipe gallery bottom plate corresponding to the outer mold trolley; the bottom of the inner mold trolley and the outer mold trolley are provided with running wheels, and the inner mold trolley and the outer mold trolley are moved along the slide rail component by applying a push / pull force on the inner mold trolley and the outer mold trolley; The template system includes an inner wall template, an outer wall template and a top surface template, wherein the outer wall template is arranged on the outer template trolley, and the outer wall template corresponds to the outer surface of the side wall of the pipe gallery; the inner wall template and the top surface template are arranged on the inner template trolley, and an armpit corner template is arranged between the top surface template and the inner wall template, the inner wall template corresponds to the inner surface of the side wall of the pipe gallery, and the top surface template corresponds to the top surface of the pipe gallery structure; The inner mold trolley includes a gantry and a hydraulic cylinder, the travel wheel is arranged at the bottom of the gantry, the hydraulic cylinder is arranged at the top of the gantry, the top surface template is connected to the hydraulic cylinder, the hydraulic cylinder is used to adjust the spacing width between the top surface template and the top of the gantry, and a top support rod is also arranged between the inner wall templates, and the top support rod is used to maintain the spacing width between the inner wall templates; A horizontal tie rod is provided between the outer mold trolleys on the left and right sides of the pipe gallery structure, and the horizontal tie rod is connected to the top of the outer mold trolley, and the horizontal tie rod is used to maintain the spacing distance between the outer mold trolleys on the left and right sides of the pipe gallery; the outer mold trolley includes a bearing frame and a plurality of anchoring screws, the outer wall formwork is connected to the bearing frame, and a fixing sleeve is provided at the bottom of the bearing frame, and the fixing sleeve is arranged perpendicular to the bottom plate of the pipe gallery, and the inner diameter of the fixing sleeve matches the outer diameter of the anchoring screw, and the anchoring screw is inserted into the fixing sleeve, and the anchoring screw can slide in the fixing sleeve, and a limiting hole is also provided at a position of the bottom plate of the pipe gallery corresponding to the fixing sleeve, and the diameter of the limiting hole matches the diameter of the anchoring screw, and the limiting hole is used for the anchoring screw to extend therein, and after the anchoring screw extends into the limiting hole, the end of the anchoring screw away from the bottom plate of the pipe gallery exceeds the top of the fixing sleeve; A first fixing seat is arranged on the inner wall formwork on one side, and a clamping groove is arranged on the inner wall formwork on the other side. One end of the top support rod is connected to the first fixing seat, and the other end extends into the clamping groove. A rubber friction head is also arranged at the end of the top support rod corresponding to the clamping groove. The top support rod and the first fixing seat are rotatably connected and matched, and the clamping groove limits the top support rod to rotate only within the width of its groove. The clamping groove is divided into a first groove area and a second groove area along the vertical direction of the inner wall formwork. When the end of the top support rod is located in the first groove area, the rubber friction head abuts against the groove bottom of the first groove area; when the end of the top support rod is located in the second groove area, the rubber friction head forms a gap with the groove bottom of the second groove area. The inner slide rail comprises a bearing plate and an inner track arranged on the bearing plate, the bearing plate is fixed on the bottom plate of the pipe gallery, a second fixing seat is also arranged at the bottom of the inner wall formwork, a diagonal brace is rotatably connected to the second fixing seat, the length of the diagonal brace is adjustable, and a limiting groove is also arranged on the bearing plate, the limiting groove is used to accommodate the end of the diagonal brace; The inner wall formwork is composed of a plurality of inner formwork units, and the adjacent inner formwork units are connected as a whole by pins and pin pieces. The inner formwork unit includes a first inner wall panel and a second inner wall panel. The first inner wall panel is connected to the armpit corner formwork, and the second inner wall panel is connected to the first inner wall panel. The connection part of the first inner wall panel and the second inner wall panel is located at the top area of ​​the guide wall integrally formed with the bottom plate of the pipe gallery, and the second fixing seat is arranged on the second inner wall panel. A slider is provided at the end of the first inner wall panel, and a slide groove is provided at the end of the second inner wall panel. The central axis of the slide groove is perpendicular to the central axis of the top surface of the guide wall body formed integrally with the bottom plate of the pipe gallery, and a gap is provided between the two ends of the slide groove and the edge line of the cross section of the second inner wall panel. The slider is clamped in the slide groove. Knock on the first inner wall panel so that the bottom edge of the first inner wall panel applies pressure to the edge of the top area of ​​the guide wall integrally formed with the bottom plate of the corridor. Under the action of pressure, the concrete in this area can be broken, and then the end of the first inner wall panel slides a distance into the side wall range of the corridor.

2. The formwork support sliding assembly for underground comprehensive pipe gallery construction according to claim 1 is characterized in that: The anchor screw is also provided with an adjusting bolt, which is threadedly connected with the anchor screw. The adjusting bolt is arranged corresponding to the two ends of the fixing sleeve. The anchor screw can be fixed by screwing the adjusting bolt to make it abut against the two ends of the fixing sleeve.

3. The formwork support sliding assembly for underground comprehensive pipe gallery construction according to claim 2 is characterized in that: The armpit corner template forms an obtuse angle with the top surface template and the inner wall template.

4. The formwork support sliding assembly for underground comprehensive pipe gallery construction according to claim 3 is characterized in that: The inner wall formwork and the armpit corner formwork are rotatably connected, and the rotation direction of the inner wall formwork is toward one side of the door frame; a hydraulic diagonal brace is also provided between the inner wall formwork and the top surface formwork, and the hydraulic diagonal brace can be extended or shortened with the rotation of the inner wall formwork.

5. The formwork support sliding assembly for underground comprehensive pipe gallery construction according to claim 4 is characterized in that: The second groove area is arranged below the first groove area.

6. The formwork support sliding assembly for underground comprehensive pipe gallery construction according to claim 5 is characterized in that: The top support rods are arranged in two rows, one of which is arranged on one side of the top surface formwork, and the other is arranged on one side of the bottom plate of the pipe gallery, and the first fixing seats for fixing the two top support rods are respectively arranged on the inner wall formworks on the left and right sides.

7. A construction method of a formwork support sliding assembly for underground comprehensive pipe gallery construction, characterized in that: The steps include: A. Construction of pipe gallery bottom plate and guide wall: Cast the bottom plate and guide wall of the pipe gallery to form the working plane of the template trolley; B. Install the formwork support sliding assembly as described in any one of claims 1 to 6: install the inner mold trolley and the outer mold trolley on the base of the pipe gallery bottom plate and the guide wall formed in step A to form a casting cavity for the side wall and the top plate of the pipe gallery; C. Adjust the fixed position of the inner wall formwork: After the formwork support sliding assembly is installed, adjust the fixed position of the inner wall formwork so that the concrete contact surface of the inner wall formwork coincides with the edge line of the side wall of the pipe gallery to be poured; D. Casting the side walls and top slab of the pipe gallery: Casting the concrete of the side walls and top slab of the pipe gallery to make the pipe gallery structure closed and formed; E. Demoulding and turnover of the formwork trolley: After the side walls and top plate of the pipe gallery reach the designed strength in step D, the inner and outer formwork trolleys are demolded and slid to the next construction section.

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