CN211038666U - Sleeve lining pouring construction structure based on assembled scaffold - Google Patents
Sleeve lining pouring construction structure based on assembled scaffold Download PDFInfo
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- CN211038666U CN211038666U CN201922161960.7U CN201922161960U CN211038666U CN 211038666 U CN211038666 U CN 211038666U CN 201922161960 U CN201922161960 U CN 201922161960U CN 211038666 U CN211038666 U CN 211038666U
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Abstract
The utility model discloses a construction structures is pour to cover lining based on pin-connected panel scaffold, include to the cover lining of being under construction carry out the arch template of shaping construction, carry out the vault pouring structure of concrete placement construction and set up the pin-connected panel scaffold in the tunnel segment that needs to be renovated to the cover lining arch portion of being under construction. The utility model has the advantages of reasonable structure design, simple construction and good use effect, adopts 7 sleeve lining forming templates to assemble and form an arch template for forming construction of the sleeve lining, adopts an assembled scaffold and carries out subsection pouring on the sleeve lining from bottom to top through the arch template, can effectively, simply and quickly complete the concrete pouring process of the sleeve lining in the secondary lining of the tunnel, and can ensure the forming quality of the sleeve lining; the assembled scaffold is easy to assemble and disassemble on site, and the lining construction efficiency can be effectively accelerated; meanwhile, the vault pouring section is poured through the vault pouring structure, and the concrete compactness and the forming quality of the vault pouring section are ensured.
Description
Technical Field
The utility model belongs to the technical field of the construction of tunnel bushing, especially, relate to a construction structures is pour to bushing based on pin-connected panel scaffold frame.
Background
With the continuous development and development of high-speed railways, single-hole double-track tunnels passing through complex geological conditions are more and more common, so that tunnel defects are also increased, the vault of the tunnel is extruded by concrete to cause the problems of block falling of lining surfaces, upper parts of two lining concrete to be hollow, steel frame distortion and deformation and the like, the collapse risk is further increased, and the driving safety is seriously threatened. Karst geology is mainly due to the fact that surface water and underground water are subjected to runoff, replenishment, permeation, circulation and other processes to carry out chemical dissolution treatment on a soluble rock stratum and products under the influence of mechanical damage. After the construction of the tunnel penetrating the karst stratum (namely the karst stratum tunnel), the tunnel needs to be cleared up, the tunnel is more damaged, particularly, the geology of the tunnel body penetrating area is complex, the stratum of the tunnel body penetrating area has the characteristics of water enrichment, karst cave, fault, high ground stress, dangerous rockfall, bedding bias and the like, and the tunnel secondary lining damage needs to be timely cleared up.
When the tunnel secondary lining diseases are actually remedied, a method of lining is generally adopted. The lining is mainly used for solving the problem of secondary lining of the tunnel (namely secondary lining of the tunnel), when the quality of the secondary lining of the tunnel is unqualified, the lining can be applied to the structural surface of the original secondary lining, and then the gap is filled by grouting. During actual construction, the lining is that concrete with a certain thickness is poured on the inner surface of the existing lining (particularly the tunnel secondary lining) and bears surrounding rock pressure together with the existing lining, and the lining can effectively prevent the existing lining from further cracking, damaging and deforming and can play a role of water prevention. Concrete pouring construction (also called concrete form construction) is an important process of bushing construction, and the concrete pouring quality directly influences the construction quality of the constructed forming bushing. However, at present, when concrete pouring construction is carried out on the bushing, particularly when the bushing in a large-section tunnel is constructed, a set of unified, standard and standardized construction method is not available for following, and various problems that construction operation is random, construction efficiency is low, the quality of the formed bushing cannot be guaranteed and the like inevitably exist in actual construction.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is to provide a lining pouring construction structure based on the assembled scaffold, which has reasonable structural design, simple construction and good use effect, adopts 7 lining forming templates to assemble and form an arch template for forming construction of the constructed lining, and simultaneously adopts the assembled scaffold to sectionally pour the constructed lining from bottom to top through the arch template, thereby effectively, simply and quickly completing the concrete pouring process of the lining in the secondary lining of the tunnel and ensuring the forming quality of the constructed lining; the assembled scaffold is easy to assemble and disassemble on site, and the lining construction efficiency can be effectively accelerated; meanwhile, the vault pouring section of the constructed lining is poured through the vault pouring structure, so that the concrete compactness and the forming quality of the vault pouring section are ensured, and a cavity between the constructed lining and the existing tunnel secondary lining can be effectively prevented.
In order to solve the technical problem, the utility model discloses a technical scheme is: the utility model provides a construction structures is pour to cover lining based on pin-connected panel scaffold frame which characterized in that: the construction method comprises the following steps of forming an arched template of a constructed lining, carrying out concrete pouring construction on an arch part of the constructed lining, and erecting a spliced scaffold which is arranged in a tunnel section to be renovated and is used for constructing the constructed lining, wherein the length of the arched template is not less than the longitudinal length of the constructed lining; the constructed sleeve lining is arranged in a tunnel secondary lining of the tunnel section needing to be renovated, and the excavation section of the tunnel section needing to be renovated is larger than 100m2；
The tunnel secondary lining is a full-section supporting structure for performing full-section supporting on a tunnel section to be renovated, and is a reinforced concrete lining; the tunnel secondary lining comprises an arch wall secondary lining for supporting an arch wall of the tunnel section to be renovated and a tunnel inverted arch arranged at the bottom of the tunnel section to be renovated, wherein the tunnel inverted arch is positioned right below the arch wall secondary lining and is connected with the arch wall secondary lining into a whole; the constructed bushing is of a reinforced concrete structure, the constructed bushing and the secondary lining of the arch wall arranged on the outer side of the constructed bushing are cast into a whole, and the shape of the cross section of the constructed bushing is the same as that of the cross section of the secondary lining of the arch wall; the cross section of the arched template is arched and the shape of the cross section of the arched template is the same as that of the cross section of the constructed bushing;
the constructed lining is divided into 7 lining pouring sections along the circumferential direction, and the 7 lining pouring sections are all distributed along the longitudinal extension direction of the tunnel; the 7 sleeve lining pouring sections comprise a vault pouring section, two upper arch waist pouring sections symmetrically arranged at the left and right sides, two lower arch waist pouring sections symmetrically arranged at the left and right sides and two side wall pouring sections symmetrically arranged at the left and right sides, the vault pouring section, the upper arch waist pouring section, the lower arch waist pouring section and the side wall pouring sections are arranged from top to bottom, the two upper arch waist pouring sections are symmetrically connected below the left and right sides of the vault pouring section, and each lower arch waist pouring section is connected between one vault pouring section and one side wall pouring section; each side wall pouring section is positioned inside a side wall of the tunnel section to be renovated, and the vertical height of each side wall pouring section is 3-3.5 m; the cross sections of the upper arch waist pouring section, the lower arch waist pouring section and the side wall pouring section are all arc-shaped;
the arch template is formed by assembling an arch crown forming template for forming a arch crown pouring section, an upper arch waist forming template which is symmetrically arranged at the left and right sides and is used for forming an upper arch waist pouring section, a lower arch waist forming template which is symmetrically arranged at the left and right sides and is used for forming a lower arch waist pouring section and a side wall forming template which is symmetrically arranged at the left and right sides and is used for forming a side wall pouring section, and the cross sections of the arch crown forming template, the upper arch waist forming template and the lower arch waist forming template are all arc-shaped; the cross section shape of the arch crown molding template is the same as that of the inner wall of the arch crown pouring section, the cross section shape of the upper arch waist molding template is the same as that of the inner wall of the upper arch waist pouring section, the cross section shape of the lower arch waist molding template is the same as that of the inner wall of the lower arch waist pouring section, and the cross section shape of the side wall molding template is the same as that of the inner wall of the side wall pouring section; the two upper arch waist forming templates are symmetrically arranged below the left side and the right side of the arch crown forming template, each lower arch waist forming template is positioned between one upper arch waist forming template and one side wall forming template, the bottom of each side wall forming template is supported on a ditch cable trough in a tunnel section to be renovated, and the ditch cable trough is a concrete trough;
the vault forming template, the upper arch waist forming template, the lower arch waist forming template and the side wall forming template are all lining forming templates; the sleeve lining forming template comprises a steel template, a plurality of template stiffening ribs distributed on the inner side of the steel template and a plurality of template counter-pull rods for fixing the steel template on the secondary lining of the arch wall, wherein the plurality of template stiffening ribs are distributed in parallel and distributed from front to back along the longitudinal extension direction of the tunnel, each template stiffening rib is uniformly distributed on the cross section of the tunnel section to be renovated, and the shape of each template stiffening rib is the same as the shape of the cross section of the steel template at the distributed position; each template counter pull rod is vertically arranged with the inner side wall of the arch wall secondary lining at the arrangement position, the inner end of each template counter pull rod is anchored on the arch wall secondary lining, the outer end of each template counter pull rod extends to the inner side of a steel template, and the steel template is provided with a plurality of through holes for the template counter pull rods to extend out;
the vault pouring structure comprises a plurality of vertical grouting pipes which are arranged from front to back along the longitudinal extension direction of the tunnel, the vertical grouting pipes are uniformly distributed on the same vertical surface and are all positioned under the vault of the tunnel section to be renovated, and the vertical grouting pipes are uniformly distributed; the upper end of each vertical grouting pipe extends into the upper part of the vault forming template, the bottom end of each vertical grouting pipe extends into the lower part of the vault forming template, and the middle part of the vault forming template is provided with a plurality of grouting holes for mounting the vertical grouting pipes from front to back;
the assembled scaffold is arranged on the inner side of the arch formwork and comprises a middle scaffold which is positioned in the middle of the inner side of the secondary lining of the tunnel and is used for constructing two upper arch waist pouring sections, an upper scaffold arranged on the middle scaffold and two side scaffolds symmetrically arranged on the left side and the right side of the middle scaffold, and the middle scaffold and the upper scaffold form the assembled scaffold for constructing the arch crown pouring sections;
each side scaffold comprises an outer side scaffold for constructing a side wall pouring section and a combined scaffold for constructing a lower arch pouring section, each combined scaffold comprises an inner side scaffold positioned at the inner side of the outer side scaffold and a middle scaffold connected between the outer side scaffold and the inner side scaffold, and the middle scaffold, the upper scaffold, the outer side scaffold, the inner side scaffold and the middle scaffold are vertically arranged; the upper part of the outer side scaffold is flush with the upper part of the inner wall of the side wall pouring section, the upper part of the middle scaffold is flush with the upper part of the inner wall of the lower arch waist pouring section, the upper part of the middle scaffold is flush with the upper part of the middle scaffold, the vertical distance between the upper part of the upper scaffold and the middle part of the arch crown pouring section is H1, and the value range of H1 is 35 cm-50 cm; the middle scaffold is positioned right below the vault pouring section.
Above-mentioned sleeve lining pouring construction structures based on pin-connected panel scaffold frame, characterized by: the middle scaffold and the left and right side scaffolds are both provided with a longitudinal channel, and the middle scaffold and the left and right side scaffolds are fastened and connected through a plurality of horizontal connecting rods arranged from front to back.
Above-mentioned sleeve lining pouring construction structures based on pin-connected panel scaffold frame, characterized by: the inner side scaffold and the middle scaffold are both positioned below the upper arch waist pouring section, and the outer side scaffold is positioned below the lower arch waist pouring section;
the middle scaffold is formed by splicing 5 middle door-type supports which are arranged on the same horizontal plane from left to right, and the 5 middle door-type supports have the same structure and size; the upper scaffold is formed by assembling 3 upper door-type supports which are arranged on the same horizontal plane from left to right, the 3 upper door-type supports have the same structure and size, and the transverse width of each upper door-type support is the same as that of the middle door-type support; the outer side scaffold, the inner side scaffold and the middle scaffold are all outer side door type supports, and the transverse widths of the outer side scaffold, the inner side scaffold and the middle scaffold are all the same as the transverse width of the middle door type support;
the transverse width of the middle door type support is 0.8-1 m.
Above-mentioned sleeve lining pouring construction structures based on pin-connected panel scaffold frame, characterized by: all the template counter-pull rods on each sleeve lining forming template are distributed in a plurality of rows from front to back, and each row of template counter-pull rods and one template stiffening rib are distributed on the same tunnel cross section of a tunnel section to be renovated; each row of template counter pull rods comprises a plurality of template counter pull rods distributed on the cross section of the same tunnel from top to bottom, and the outer end of each template counter pull rod extends out after passing through a steel template and a template stiffening rib; and a plurality of through holes for the extension of the opposite pull rods of the template are formed in each template stiffening rib.
Above-mentioned sleeve lining pouring construction structures based on pin-connected panel scaffold frame, characterized by: every the locating part is all installed to the template tie rod outer end, the locating part is located template stiffening rib inboard, fill up between locating part and the template stiffening rib and be equipped with the backing plate.
Above-mentioned sleeve lining pouring construction structures based on pin-connected panel scaffold frame, characterized by: the cross section of vertical slip casting pipe is circular and the diameter from top to bottom reduces gradually.
Above-mentioned sleeve lining pouring construction structures based on pin-connected panel scaffold frame, characterized by: the vertical grouting pipe is a PVC pipe.
Above-mentioned sleeve lining pouring construction structures based on pin-connected panel scaffold frame, characterized by: the template stiffening rib is a channel steel.
Above-mentioned sleeve lining pouring construction structures based on pin-connected panel scaffold frame, characterized by: the upper outer side of each upper arch waist pouring section is provided with a lower chiseling groove, each lower chiseling groove is a horizontal groove formed after chiseling concrete for secondary lining of the arch wall, the lower chiseling grooves are distributed along the longitudinal extension direction of the tunnel, the upper surfaces of the lower chiseling grooves are horizontal planes, and the two lower chiseling grooves are symmetrically distributed;
an upper chiseling groove is formed above the left side and the right side of the arch crown pouring section, the upper chiseling groove is a horizontal groove formed after chiseling concrete in the secondary lining of the arch wall, the upper chiseling groove is distributed along the longitudinal extension direction of the tunnel, and the upper surface of the upper chiseling groove is a horizontal plane; the upper chiseling grooves above the left side and the right side of the vault pouring section are symmetrically distributed.
Above-mentioned sleeve lining pouring construction structures based on pin-connected panel scaffold frame, characterized by: the arched template further comprises a front end template and a rear end template, the front end template and the rear end template are wood templates and are respectively arranged on the front side and the rear side of the arched template, and each end template is arched.
Compared with the prior art, the utility model has the following advantage:
1. structural design is reasonable and the input construction cost is lower.
2. The adopted sleeve lining forming die has the advantages of simple structure, reasonable design, simple and convenient fixation, good use effect, simple and convenient fixation on the secondary lining of the arch wall, and capability of ensuring the forming quality of the constructed sleeve lining pouring section.
3. The adopted arched template structure has reasonable design, simple and convenient assembly and disassembly, convenient construction and good use effect, the 7 sleeve lining forming templates are assembled to form the arched template for forming construction of the constructed sleeve lining, and the constructed sleeve lining is cast in sections from bottom to top through the arched template, so that the concrete casting process of the sleeve lining in the secondary tunnel lining can be effectively, simply and quickly completed, and the forming quality of the constructed sleeve lining can be ensured; meanwhile, the vault pouring section of the constructed lining is poured through the vault pouring structure, so that the concrete compactness and the forming quality of the vault pouring section are ensured, and a cavity between the constructed lining and the existing tunnel secondary lining can be effectively prevented. The constructed lining is divided into 7 lining pouring sections along the circumferential direction, the 7 lining pouring sections are reasonably divided, the lining concrete pouring construction process can be effectively simplified, and the pouring quality is easy to guarantee.
4. The assembled scaffold is practical and reasonable in structure, convenient to erect and simple and convenient to assemble and disassemble on site, can effectively accelerate the lining construction efficiency, can simply, conveniently and quickly complete the concrete pouring construction process of each lining pouring section, and ensures the concrete pouring quality and the construction efficiency of each lining pouring section.
5. The construction is simple and convenient and excellent in use effect, the arch formwork, the vault pouring structure and the assembled scaffold are matched to construct the lining, the concrete construction process of the lining can be effectively simplified, the lining construction can be simply, conveniently and quickly completed with high quality, the forming quality of the constructed lining can be ensured, the construction period is shortened, the adopted structure is a conventional structure, the installation is simple and convenient, the acquisition is easy, the material and equipment input cost can be effectively reduced, and the requirement on constructors is low.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
Fig. 1 is a reference diagram of the usage state of the present invention.
Fig. 2 is a schematic view of the installation state of the arch form of the present invention.
Fig. 3 is a schematic structural view of the bushing of the present invention.
Fig. 4 is a schematic structural view of the vault forming template of the present invention.
Fig. 5 is a schematic structural view of the upper arch forming template of the present invention.
Fig. 6 is a schematic structural view of the lower arch molding plate of the present invention.
Fig. 7 is a schematic structural view of the side wall forming formwork of the present invention.
Fig. 8 is the installation position schematic diagram of the vertical grouting pipe of the present invention.
Fig. 9 is a schematic view showing the arrangement positions of the upper chiseling grooves and the lower chiseling grooves according to the present invention.
Fig. 10 is a schematic structural view of the assembled scaffold of the present invention.
Fig. 11 is the construction state schematic diagram of the two side walls during the construction of the pouring section.
Fig. 12 is a schematic view of the construction state of two lower arch forming formworks according to the present invention.
Fig. 13 is a schematic view of the construction state of the two upper arch forming templates of the present invention.
Description of reference numerals:
1, secondary lining of a tunnel; 2-the tunnel section needs to be renovated;
5, a primary tunnel supporting structure; 7-ditch cable trough;
8, constructing a bushing; 8-1-vault pouring section; 8-2-upper arch waist pouring section;
8-3-lower arch waist pouring section; 8-4-side wall pouring section;
9-1-vault shaping template; 9-2-upper arch waist forming template;
9-3-lower arch waist forming template; 9-4-side wall forming template;
10, steel moulding plate; 11-form stiffeners; 12-template opposite pull rod;
13-a stop; 14-a backing plate; 15-vertical grouting pipe;
16-lower chiseling out the groove; 17-chiseling the groove; 18-longitudinal reinforcement plates;
19-cavity to be filled; 20-middle scaffolding; 21-upper scaffolding;
22-inside scaffold; 23-intermediate scaffolding; 24-outside scaffolding;
25-longitudinal channel; 26-diagonal brace; 27-a cross brace;
28-a bottom support structure; 29-tunnel inverted arch filling layer; 30-track plate.
Detailed Description
As shown in fig. 1 and 2, the utility model comprises an arch form for molding construction of the constructed lining 8, a vault pouring structure for concrete pouring construction of the arch of the constructed lining 8 and a splicing scaffold which is arranged in the tunnel section 2 needing to be renovated and is used for constructing the constructed lining 8, wherein the length of the arch form is not less than the longitudinal length of the constructed lining 8; the constructed lining 8 is arranged in the tunnel secondary lining 1 of the tunnel section 2 to be renovated, and the excavation section of the tunnel section 2 to be renovated is more than 100m2；
The tunnel secondary lining 1 is a full-section supporting structure for performing full-section supporting on the tunnel section 2 to be renovated, and the tunnel secondary lining 1 is a reinforced concrete lining; the tunnel secondary lining 1 comprises an arch wall secondary lining for supporting an arch wall of the tunnel section 2 to be renovated and a tunnel inverted arch arranged at the bottom of the tunnel section 2 to be renovated, wherein the tunnel inverted arch is positioned right below the arch wall secondary lining and is connected into a whole; the constructed bushing 8 is of a reinforced concrete structure, the constructed bushing 8 and the secondary lining of the arch wall arranged on the outer side of the constructed bushing are cast into a whole, and the shape of the cross section of the constructed bushing 8 is the same as that of the cross section of the secondary lining of the arch wall; the cross section of the arched template is arched and the shape of the cross section of the arched template is the same as that of the cross section of the constructed bushing 8;
as shown in fig. 3, the constructed lining 8 is divided into 7 lining casting sections along the circumferential direction, and the 7 lining casting sections are all arranged along the longitudinal extension direction of the tunnel; the 7 sleeve lining pouring sections comprise a vault pouring section 8-1, two upper arch waist pouring sections 8-2 which are symmetrically arranged at the left and right sides, two lower arch waist pouring sections 8-3 which are symmetrically arranged at the left and right sides and two side wall pouring sections 8-4 which are symmetrically arranged at the left and right sides, the vault pouring section 8-1, the upper arch waist pouring section 8-2, the lower arch waist pouring section 8-3 and the side wall pouring section 8-4 are arranged from top to bottom, the two upper arch waist pouring sections 8-2 are symmetrically connected below the left and right sides of the vault pouring section 8-1, and each lower arch waist pouring section 8-3 is connected between one vault pouring section 8-1 and one side wall pouring section 8-4; each side wall pouring section 8-4 is positioned inside one side wall of the tunnel section 2 to be renovated, and the vertical height of each side wall pouring section 8-4 is 3 m-3.5 m; the cross sections of the upper arch waist pouring section 8-2, the lower arch waist pouring section 8-3 and the side wall pouring section 8-4 are all arc-shaped;
with reference to fig. 4, 5, 6 and 7, the arch form is assembled by a vault forming form 9-1 for forming the vault pouring section 8-1, two upper arch forming forms 9-2 symmetrically arranged at left and right sides for forming the upper arch pouring section 8-2, two lower arch forming forms 9-3 symmetrically arranged at left and right sides for forming the lower arch pouring section 8-3, and two side wall forming forms 9-4 symmetrically arranged at left and right sides for forming the side wall pouring section 8-4, wherein the cross sections of the vault forming form 9-1, the upper arch forming form 9-2 and the lower arch forming form 9-3 are all arc-shaped; the cross section shape of the arch crown molding template 9-1 is the same as the cross section shape of the inner wall of the arch crown pouring section 8-1, the cross section shape of the upper arch waist molding template 9-2 is the same as the cross section shape of the inner wall of the upper arch waist pouring section 8-2, the cross section shape of the lower arch waist molding template 9-3 is the same as the cross section shape of the inner wall of the lower arch waist pouring section 8-3, and the cross section shape of the side wall molding template 9-4 is the same as the cross section shape of the inner wall of the side wall pouring section 8-4; the two upper arch forming templates 9-2 are symmetrically arranged below the left side and the right side of the arch crown forming template 9-1, each lower arch forming template 9-3 is positioned between one upper arch forming template 9-2 and one side wall forming template 9-4, the bottom of each side wall forming template 9-4 is supported on a ditch cable groove 7 in the tunnel section 2 to be renovated, and the ditch cable groove 7 is a concrete groove;
the vault forming template 9-1, the upper arch waist forming template 9-2, the lower arch waist forming template 9-3 and the side wall forming template 9-4 are all lining forming templates; the sleeve lining forming template comprises a steel template 10, a plurality of template stiffening ribs 11 arranged on the inner side of the steel template 10 and a plurality of template counter-pull rods 12 for fixing the steel template 10 on the secondary lining of the arch wall, wherein the plurality of template stiffening ribs 11 are arranged in parallel and are arranged from front to back along the longitudinal extension direction of the tunnel, each template stiffening rib 11 is uniformly distributed on the cross section of the tunnel section 2 to be rectified, and the shape of each template stiffening rib 11 is the same as the shape of the cross section of the steel template at the position where the template stiffening rib is arranged; each template counter-pull rod 12 is vertically arranged with the inner side wall of the arch wall secondary lining at the arrangement position, the inner end of each template counter-pull rod 12 is anchored on the arch wall secondary lining, the outer end of each template counter-pull rod 12 extends to the inner side of a steel template 10, and a plurality of through holes for the template counter-pull rods 12 to extend out are formed in the steel template 10;
as shown in fig. 8, the vault pouring structure includes a plurality of vertical grouting pipes 15 arranged from front to back along the longitudinal extension direction of the tunnel, the plurality of vertical grouting pipes 15 are uniformly distributed on the same vertical plane and are all located right below the vault of the tunnel section 2 to be renovated, and the plurality of vertical grouting pipes 15 are uniformly distributed; the upper end of each vertical grouting pipe 15 extends into the upper part of the vault forming template 9-1, the bottom end of each vertical grouting pipe 15 extends into the lower part of the vault forming template 9-1, and the middle part of the vault forming template 9-1 is provided with a plurality of grouting holes for mounting the vertical grouting pipes 15 from front to back;
the assembled scaffold is arranged on the inner side of the arch formwork and comprises a middle scaffold 20, an upper scaffold 21 and two side scaffolds, wherein the middle scaffold 20 is located in the middle of the inner side of the tunnel secondary lining 1 and is used for constructing two upper arch waist pouring sections 8-2, the upper scaffold 21 is arranged on the middle scaffold 20, the two side scaffolds are symmetrically arranged on the two sides of the middle scaffold 20, and the middle scaffold 20 and the upper scaffold 21 form the assembled scaffold for constructing the arch crown pouring section 8-1;
as shown in fig. 10, each of the side scaffolds includes an outer side scaffold 24 for constructing the side wall casting section 8-4 and a combined scaffold for constructing the lower arch casting section 8-3, the combined scaffold includes an inner side scaffold 22 positioned inside the outer side scaffold 24 and an intermediate scaffold 23 connected between the outer side scaffold 24 and the inner side scaffold 22, and the intermediate scaffold 20, the upper scaffold 21, the outer side scaffold 24, the inner side scaffold 22 and the intermediate scaffold 23 are vertically arranged; the upper part of the outer side scaffold 24 is flush with the upper part of the inner wall of the side wall pouring section 8-4, the upper part of the middle scaffold 23 is flush with the upper part of the inner wall of the lower arch waist pouring section 8-3, the upper part of the middle scaffold 20 is flush with the upper part of the middle scaffold 23, the vertical distance between the upper part of the upper scaffold 21 and the middle part of the arch crown pouring section 8-1 is H1, and the value range of H1 is 35 cm-50 cm; the middle scaffold 20 is located directly below the vault casting section 8-1.
The tunnel secondary lining 1 outside is provided with tunnel primary supporting structure 5 that carries out preliminary bracing to the tunnel section 2 that needs to be renovated, tunnel primary supporting structure 5 and tunnel secondary lining 1 constitute the tunnel supporting structure of the tunnel section 2 that needs to be renovated.
In this embodiment, the arch template still includes two front and back end templates, two the end template is the plank sheathing and the two is laid respectively the front and back both sides of arch template, every the end template is the arch. Each end formwork is located on a tunnel cross section of the tunnel section 2 to be renovated.
In order to ensure the supporting effect of the side wall forming template 9-4, a cover plate is arranged on the notch of the ditch cable trough 7.
During actual construction, the central angle of the upper arch waist pouring section 8-2 and the lower arch waist pouring section 8-3 is 25-35 degrees, and the central angle of the arch crown pouring section 8-1 is 30-45 degrees. In this embodiment, the vertical height of the side wall pouring section 8-4 is 3.3m, the vertical height of the lower arch waist pouring section 8-3 is 2.95m, and the vertical height of the upper arch waist pouring section 8-2 is 1.85 m. During actual construction, the vertical height of the side wall pouring section 8-4, the arc length and the vertical height of the upper arch waist pouring section 8-2, the lower arch waist pouring section 8-3 and the arch crown pouring section 8-1 can be respectively adjusted correspondingly according to specific requirements.
In this embodiment, the steel form 10 and the form stiffener 11 outside the steel form are all fixedly connected by welding.
For further right the cover lining shaping template consolidates, cover lining shaping template still includes the vertical gusset plate 18 that multichannel laid from top to bottom, multichannel vertical gusset plate 18 all is the level and lays and all it lays along the tunnel longitudinal direction of extension, every channel vertical gusset plate 18 all is perpendicular the laying rather than the lateral wall that lays position department steel form 10 and lays. Each of the template stiffeners 11 outside the lining forming template is divided into a plurality of stiffener segments by a plurality of longitudinal reinforcing plates 18. In this embodiment, the longitudinal reinforcing plate 18 and the steel form 10 are fixedly connected by welding. The longitudinal reinforcing plate 18 is an elongated steel plate.
And the tunnel section 2 needing to be renovated is a tunnel section which has diseases on the tunnel secondary lining 1 and needs to be renovated. In this embodiment, the excavation width of the tunnel section 2 to be renovated is 15m to 16m, and the excavation height of the tunnel section 2 to be renovated is 12.5m to 13.5 m.
For simple and convenient processing and convenient fixing, the template counter-pull rod 12 is a screw rod.
In this embodiment, the opposite pull rod 12 of the form is a twisted steel and has a diameter of phi 14 mm. When the template counter-pull rod 12 is installed, firstly, a hole is drilled in the secondary lining of the arch wall, and the template counter-pull rod 12 is anchored in the drilled hole in the secondary lining of the arch wall through an anchoring agent; the anchoring depth of the formwork to the pull rod 12 is not less than 20 cm. Before the concrete pouring is carried out on the constructed bushing 8, the drawing force of each formwork on the pull rod 12 is ensured to be not less than 20 kN.
In order to fix the sleeve lining forming template simply, conveniently and firmly, all template counter-pull rods 12 on each sleeve lining forming template are distributed in a plurality of rows from front to back, and each row of template counter-pull rods 12 and one template stiffening rib 11 are distributed on the same tunnel cross section of the tunnel section 2 to be renovated; each row of template counter-pull rods 12 comprises a plurality of template counter-pull rods 12 distributed on the cross section of the same tunnel from top to bottom, and the outer end of each template counter-pull rod 12 extends out after passing through a steel template 10 and a template stiffening rib 11; each template stiffening rib 11 is provided with a plurality of through holes for extending the template counter-pull rods 12.
And each limiting piece 13 is installed at the outer end of each template counter-pull rod 12, the limiting pieces 13 are located at the inner sides of the template stiffening ribs 11, and a backing plate 14 is padded between the limiting pieces 13 and the template stiffening ribs 11.
In this embodiment, the backing plate 14 is a cubic pad. And, the backing plate 14 is a wood block.
In this embodiment, the template stiffening rib 11 is a channel steel, and the channel steel can effectively reinforce the steel template 10.
The notch of the template stiffening rib 11 faces inwards, and a plurality of through holes for extending the template counter-pull rod 12 are formed in the web plate of the template stiffening rib 11. During actual construction, the tie plate 14 is disposed in the notch of the formwork stiffener 11.
In this embodiment, the plurality of vertical grouting pipes 15 have the same structure and size. The distance between two adjacent front and back vertical grouting pipes 15 is 1 m. During actual construction, the distance between the front vertical grouting pipe 15 and the rear vertical grouting pipe 15 can be correspondingly adjusted according to specific requirements.
As shown in fig. 8, in the present embodiment, the vertical grouting pipe 15 has a circular cross section and a diameter gradually decreasing from top to bottom. And, vertical slip casting pipe 15 is the PVC pipe, and the actual construction is very simple and convenient to the slip casting is convenient, excellent in use effect.
In this embodiment, the tunnel secondary lining 1 of the tunnel segment 2 to be remedied has the defects of dropping blocks of the lining surface, upper hollowing of the secondary lining concrete, distortion and deformation of a steel frame, and the like of the tunnel vault due to concrete extrusion, the upper end of the vertical grouting pipe 15 is flush with the vault of the constructed bushing 8, so that the concrete pouring compactness of the constructed bushing 8 can be effectively ensured, the concrete pouring quality of the constructed bushing 8 can be effectively ensured, the cavity 19 to be filled, which is formed between the vault of the tunnel secondary lining 1 and the vault of the constructed bushing 8 after the upper hollowing of the secondary lining concrete, can be poured, and the compactness of the concrete poured in the cavity 19 to be filled can be ensured.
As shown in fig. 9, in order to further increase the connection strength and connection quality between the constructed lining 8 and the secondary lining of the arch wall, a lower chiseling groove 16 is formed on the outer side above each upper arch waist pouring section 8-2, the lower chiseling groove 16 is a horizontal groove formed by chiseling concrete of the secondary lining of the arch wall, the lower chiseling grooves 16 are arranged along the longitudinal extension direction of the tunnel, the upper surface of each lower chiseling groove is a horizontal plane, and the two lower chiseling grooves 16 are symmetrically arranged;
an upper chiseling groove 17 is formed above the left side and the right side of the arch crown pouring section 8-1, the upper chiseling groove 17 is a horizontal groove formed after chiseling concrete in the secondary lining of the arch wall, the upper chiseling groove 17 is distributed along the longitudinal extension direction of the tunnel, and the upper surface of the upper chiseling groove 17 is a horizontal plane; the upper chiseling grooves 17 above the left side and the right side of the vault pouring section 8-1 are symmetrically distributed.
When concrete is actually poured into the upper arch upper pouring section 8-2, the lower chiseling groove 16 is poured. When concrete is poured into the arch top pouring section 8-1, the upper chiseled groove 17 is poured.
In this embodiment, the length of the tunnel segment 2 to be renovated is not more than 15 m.
In order to avoid influencing normal traffic in a tunnel section which needs to be rectified, a longitudinal channel 25 is arranged between the middle scaffold 20 and the left and right side scaffolds, and the middle scaffold 20 and the left and right side scaffolds are fixedly connected through a plurality of horizontal connecting rods arranged from front to back.
In this embodiment, in order to ensure the overall stability of the assembled scaffold, the middle scaffold 20 and the left and right side scaffolds are fastened and connected by a plurality of horizontal connecting rods arranged from front to back.
As shown in fig. 1, to meet the actual construction requirements, the inner scaffold 22 and the middle scaffold 23 are both located below the upper arch-waist casting section 8-2, and the outer scaffold 24 is located below the lower arch-waist casting section 8-3. The middle scaffold 20 has a lateral width greater than that of the upper scaffold 21, so that the middle scaffold 20 and the upper scaffold 21 form a stepped scaffold for facilitating concrete casting of the arch crown pouring section 8-1.
During actual construction, the middle scaffold 20 is formed by assembling 5 middle door-type supports distributed on the same horizontal plane from left to right, and the 5 middle door-type supports have the same structure and size; the upper scaffold 21 is formed by assembling 3 upper door-type supports which are arranged on the same horizontal plane from left to right, the 3 upper door-type supports have the same structure and size, and the transverse width of each upper door-type support is the same as that of the middle door-type support; the outer side scaffold 24, the inner side scaffold 22 and the middle scaffold 23 are all outer side door type supports, and the transverse widths of the outer side scaffold, the inner side scaffold 22 and the middle scaffold are all the same as the transverse width of the middle door type support;
the transverse width of the middle door type support is 0.8-1 m.
In this embodiment, the lateral width of the middle door-type support is 0.9 m. During actual construction, the transverse width of the middle door type support can be correspondingly adjusted according to specific requirements.
For setting up portably, every middle part portal trestle and every inboard scaffold 22 is assembled by four assembled portal trestles from top to bottom laid on same vertical face and forms, every outside scaffold 24 is laid by two from top to bottom on same vertical face assembled portal trestle is assembled and forms, every middle scaffold 23 is assembled by three assembled portal trestle from top to bottom laid on same vertical face and forms, every upper portion portal trestle is one assembled portal trestle.
The assembled type scaffold is characterized in that the transverse widths of all assembled type door type supports in the assembled type scaffold are the same, and the vertical heights of all assembled type door type supports arranged on the same horizontal plane in the assembled type scaffold are the same. During actual construction, the assembled door type supports in the assembled scaffold are assembled respectively, and then the assembled door type supports are assembled into the middle door type support, the inner side scaffold 22, the outer side scaffold 24, the middle scaffold 23 and the upper scaffold 21.
In this embodiment, the transverse widths of all the assembled portal supports in the assembled scaffold are 0.9m, and the vertical height of each assembled portal support is 1.6-1.8 m.
During actual construction, the transverse width and the vertical height of the assembled door type support can be correspondingly adjusted according to specific requirements.
In this embodiment, middle part portal frame upper portion portal frame with outside portal frame is door-type scaffold, door-type scaffold is the steel pipe scaffold who sets up by many steel pipes and form.
And the adjacent two steel pipes in the steel pipe scaffold are connected through a fastener.
In this embodiment, the lateral width of the middle scaffold 20 is 3.8m to 4.2m, and the lateral width of the upper scaffold 21 is 2.2m to 2.6 m.
Before the construction of the constructed sleeve liner 8, all the formwork pair tie rods 12 for fixing the arch crown forming formwork 9-1, the upper arch waist forming formwork 9-2, the lower arch waist forming formwork 9-3 and the side wall forming formwork 9-4 are respectively fixed on the secondary lining of the arch wall.
When the constructed bushing 8 is constructed, the formwork is erected for four times, and the process is as follows;
firstly, respectively installing two side wall forming templates 9-4, and simultaneously erecting two outer side scaffolds 24, wherein in order to ensure the stability of the two outer side scaffolds 24, an inclined strut 26 is arranged at the inner side of each outer side scaffold 24, and the outer side scaffolds 24 are further stably supported through the inclined struts 26, which is shown in detail in fig. 11; then, a constructor stands on the outside scaffold 24 to symmetrically pour the left side wall pouring section 8-4 and the right side wall pouring section 8-4 in a layered manner from top to bottom, and symmetrically pour the left side wall pouring section 8-4 and the right side wall pouring section 8-4 by using the two side wall forming templates 9-4, so that the actual operation is very simple and convenient;
secondly, after the right two side wall pouring sections 8-4 are poured, respectively installing two lower arch waist forming templates 9-3, and simultaneously erecting an inner side scaffold 22 and an intermediate scaffold 23 on the inner side of each outer side scaffold 24 to obtain the erected combined scaffold and the erected side scaffolds, wherein the vertical distance between the upper part of the intermediate scaffold 23 and the upper part of the outer side scaffold 24 is half of the vertical height of the lower arch waist pouring section 8-3; in order to ensure the stability of the side scaffolds, a cross brace 27 is arranged between the two side scaffolds, as shown in detail in fig. 12; then, a constructor stands on the combined scaffold to symmetrically pour the left lower arch waist pouring section 8-3 and the right lower arch waist pouring section 8-3 in a layered manner from top to bottom, and symmetrically pour the left lower arch waist pouring section 8-3 and the right lower arch waist pouring section 8-3 by using the two lower arch waist forming templates 9-3, so that the actual operation is very simple and convenient;
thirdly, after the left lower arch waist pouring section 8-3 and the right lower arch waist pouring section 8-3 are poured, the two upper arch waist forming templates 9-2 are respectively installed, meanwhile, a middle scaffold 20 is erected between the two side scaffolds, the middle scaffold 20 and the two side scaffolds are fixedly connected into a whole, a cross brace 27 is arranged on the middle scaffold 20, and the detailed description is shown in fig. 13; then, a constructor stands on the middle scaffold 20 to symmetrically pour the left upper arch waist pouring section 8-2 and the right upper arch waist pouring section 8-2 in a layered manner from top to bottom, and symmetrically pour the left upper arch waist pouring section 8-2 and the right upper arch waist pouring section 8-2 by using the two upper arch waist forming templates 9-2, so that the actual operation is very simple and convenient;
fourthly, after the left upper arch waist pouring section 8-2 and the right upper arch waist pouring section 8-2 are poured, installing an arch top forming template 9-1 and a plurality of vertical grouting pipes 15, and installing an upper scaffold 21 on a middle scaffold 20 to obtain the erected and formed assembled scaffold, which is shown in detail in fig. 1; and then, the constructor performs concrete pouring on the vault pouring section 8-1 by using the assembled scaffold and through the plurality of vertical grouting pipes 15 to complete the construction process of the constructed bushing 8.
In this embodiment, the outside scaffold 24 bottom sprag is on ditch cable duct 7, middle part scaffold 20, inboard scaffold 22 and middle scaffold 23 bottom all support on bottom sprag structure 28, bottom sprag structure 28 is piled up by the multilayer square timber of laying on tunnel invert filling layer 29 and track board 30 and forms.
In this embodiment, the square timber is a sleeper.
In the actual construction process, when concrete is poured on the side wall pouring section 8-4, the lower arch waist pouring section 8-3 and the upper arch waist pouring section 8-2, an inserted vibrating rod is adopted for tamping and layered pouring is carried out from bottom to top, and the layered thickness is 100 cm.
When concrete is poured on the vault pouring section 8-1, an insertion type vibrating rod is adopted and vibrated through vibrating holes formed in the end mold, and the concrete pouring quality is ensured.
In order to ensure the forming quality of the constructed bushing 8, the side wall forming template 9-4 is strictly forbidden to be dismantled when the lower arch waist pouring section 8-3 is poured; when the upper arch waist pouring section 8-2 is poured, the lower arch waist forming template 9-3 is strictly forbidden to be dismantled; correspondingly, when the arch top pouring section 8-1 is poured, the upper arch waist forming template 9-2 is strictly forbidden to be dismantled.
The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and the equivalent structure change of doing above embodiment the utility model discloses technical scheme's within the scope of protection.
Claims (10)
1. The utility model provides a construction structures is pour to cover lining based on pin-connected panel scaffold frame which characterized in that: the construction method comprises an arch template for molding construction of a constructed lining (8), an arch crown pouring structure for performing concrete pouring construction on an arch part of the constructed lining (8), and a spliced scaffold which is erected in a tunnel section (2) to be renovated and is used for constructing the constructed lining (8), wherein the length of the arch template is not less than the longitudinal length of the constructed lining (8); the constructed sleeve linings (8) are arranged in the secondary tunnel lining (1) of the tunnel section (2) to be renovated, and the excavation section of the tunnel section (2) to be renovated is larger than 100m2；
The tunnel secondary lining (1) is a full-section supporting structure for performing full-section supporting on the tunnel section (2) to be renovated, and the tunnel secondary lining (1) is a reinforced concrete lining; the tunnel secondary lining (1) comprises an arch wall secondary lining for supporting an arch wall of the tunnel section (2) to be renovated and a tunnel inverted arch arranged at the bottom of the tunnel section (2) to be renovated, wherein the tunnel inverted arch is positioned right below the arch wall secondary lining and is connected with the arch wall secondary lining into a whole; the construction sleeve lining (8) is of a reinforced concrete structure, the construction sleeve lining (8) and the secondary lining of the arch wall arranged on the outer side of the construction sleeve lining are poured into a whole, and the shape of the cross section of the construction sleeve lining (8) is the same as that of the cross section of the secondary lining of the arch wall; the cross section of the arched template is arched, and the shape of the cross section of the arched template is the same as that of the cross section of the constructed bushing (8);
the construction sleeve liner (8) is divided into 7 sleeve liner pouring sections along the circumferential direction, and the 7 sleeve liner pouring sections are all arranged along the longitudinal extension direction of the tunnel; the 7 sleeve lining pouring sections comprise a vault pouring section (8-1), two upper arch waist pouring sections (8-2) which are symmetrically arranged at the left and the right, two lower arch waist pouring sections (8-3) which are symmetrically arranged at the left and the right, and two side wall pouring sections (8-4) which are symmetrically arranged at the left and the right, the vault pouring section (8-1), the upper arch waist pouring section (8-2), the lower arch waist pouring section (8-3) and the side wall pouring section (8-4) are arranged from top to bottom, the two upper arch waist pouring sections (8-2) are symmetrically connected to the lower portions of the left side and the right side of the vault pouring section (8-1), and each lower arch waist pouring section (8-3) is connected between one vault pouring section (8-1) and one side wall pouring section (8-4); each side wall pouring section (8-4) is positioned inside one side wall of the tunnel section (2) to be renovated, and the vertical height of each side wall pouring section (8-4) is 3-3.5 m; the cross sections of the upper arch waist pouring section (8-2), the lower arch waist pouring section (8-3) and the side wall pouring section (8-4) are all arc-shaped;
the arch-shaped formwork is formed by assembling an arch top forming formwork (9-1) for forming and constructing an arch top pouring section (8-1), an upper arch waist forming formwork (9-2) which is symmetrically arranged at the left and right sides and is used for forming and constructing an upper arch waist pouring section (8-2), a lower arch waist forming formwork (9-3) which is symmetrically arranged at the left and right sides and is used for forming and constructing a lower arch waist pouring section (8-3), and a side wall forming formwork (9-4) which is symmetrically arranged at the left and right sides and is used for forming and constructing a side wall pouring section (8-4), wherein the cross sections of the arch top forming formwork (9-1), the upper arch waist forming formwork (9-2) and the lower arch waist forming formwork (9-3) are arc-shaped; the cross section shape of the arch crown molding template (9-1) is the same as that of the inner wall of the arch crown pouring section (8-1), the cross section shape of the upper arch waist molding template (9-2) is the same as that of the inner wall of the upper arch waist pouring section (8-2), the cross section shape of the lower arch waist molding template (9-3) is the same as that of the inner wall of the lower arch waist pouring section (8-3), and the cross section shape of the side wall molding template (9-4) is the same as that of the inner wall of the side wall pouring section (8-4); the two upper arch waist forming templates (9-2) are symmetrically arranged below the left side and the right side of the arch crown forming template (9-1), each lower arch waist forming template (9-3) is positioned between one upper arch waist forming template (9-2) and one side wall forming template (9-4), the bottom of each side wall forming template (9-4) is supported on a ditch cable trough (7) in the tunnel section (2) to be renovated, and the ditch cable trough (7) is a concrete trough;
the vault forming template (9-1), the upper arch waist forming template (9-2), the lower arch waist forming template (9-3) and the side wall forming template (9-4) are all lining forming templates; the sleeve lining forming template comprises a steel template (10), a plurality of template stiffening ribs (11) arranged on the inner side of the steel template (10) and a plurality of template counter-pull rods (12) for fixing the steel template (10) on the secondary lining of the arch wall, wherein the plurality of template stiffening ribs (11) are arranged in parallel and are arranged from front to back along the longitudinal extension direction of the tunnel, each template stiffening rib (11) is uniformly distributed on the cross section of the tunnel section (2) to be regulated, and the shape of each template stiffening rib (11) is the same as the shape of the cross section of the steel template at the position where the template stiffening rib is distributed; each template counter-pull rod (12) is vertically arranged with the inner side wall of the arch wall secondary lining at the arrangement position of the template counter-pull rod, the inner end of each template counter-pull rod (12) is anchored on the arch wall secondary lining, the outer end of each template counter-pull rod (12) extends to the inner side of a steel template (10), and the steel template (10) is provided with a plurality of through holes for the template counter-pull rods (12) to extend out;
the vault pouring structure comprises a plurality of vertical grouting pipes (15) which are arranged from front to back along the longitudinal extension direction of the tunnel, the vertical grouting pipes (15) are uniformly distributed on the same vertical surface and are positioned right below the vault of the tunnel section (2) to be renovated, and the vertical grouting pipes (15) are uniformly distributed; the upper end of each vertical grouting pipe (15) extends into the upper part of the vault forming template (9-1), the bottom end of each vertical grouting pipe (15) extends out of the lower part of the vault forming template (9-1), and the middle part of the vault forming template (9-1) is provided with a plurality of grouting holes for mounting the vertical grouting pipes (15) from front to back;
the assembled scaffold is arranged on the inner side of the arched formwork and comprises a middle scaffold (20) which is positioned in the middle of the inner side of the tunnel secondary lining (1) and used for constructing two upper arched waist pouring sections (8-2), an upper scaffold (21) arranged on the middle scaffold (20) and two side scaffolds symmetrically arranged on the left side and the right side of the middle scaffold (20), and the middle scaffold (20) and the upper scaffold (21) form the assembled scaffold for constructing the arch crown pouring section (8-1);
each side scaffold comprises an outer side scaffold (24) for constructing the side wall pouring section (8-4) and a combined scaffold for constructing the lower arch pouring section (8-3), the combined scaffold comprises an inner side scaffold (22) positioned at the inner side of the outer side scaffold (24) and a middle scaffold (23) connected between the outer side scaffold (24) and the inner side scaffold (22), and the middle scaffold (20), the upper scaffold (21), the outer side scaffold (24), the inner side scaffold (22) and the middle scaffold (23) are vertically arranged; the upper part of the outer side scaffold (24) is flush with the upper part of the inner wall of the side wall pouring section (8-4), the upper part of the middle scaffold (23) is flush with the upper part of the inner wall of the lower arch waist pouring section (8-3), the upper part of the middle scaffold (20) is flush with the upper part of the middle scaffold (23), the vertical distance between the upper part of the upper scaffold (21) and the middle part of the arch crown pouring section (8-1) is H1, and the value range of H1 is 35 cm-50 cm; the middle scaffold (20) is positioned right below the vault pouring section (8-1).
2. The lining pouring construction structure based on the assembled scaffold as claimed in claim 1, wherein: the middle scaffold (20) and the left and right side scaffolds are both provided with a longitudinal channel (25), and the middle scaffold (20) and the left and right side scaffolds are fixedly connected through a plurality of horizontal connecting rods arranged from front to back.
3. The lining pouring construction structure based on the assembled scaffold as claimed in claim 1 or 2, wherein: the inner side scaffold (22) and the middle scaffold (23) are both positioned below the upper arch waist pouring section (8-2), and the outer side scaffold (24) is positioned below the lower arch waist pouring section (8-3);
the middle scaffold (20) is formed by splicing 5 middle door-type supports which are arranged on the same horizontal plane from left to right, and the 5 middle door-type supports have the same structure and size; the upper scaffold (21) is formed by assembling 3 upper door-type supports distributed on the same horizontal plane from left to right, the 3 upper door-type supports are identical in structure and size, and the transverse width of each upper door-type support is identical to that of the middle door-type support; the outer side scaffold (24), the inner side scaffold (22) and the middle scaffold (23) are outer side door type supports, and the transverse widths of the outer side scaffold, the inner side scaffold and the middle scaffold are the same as the transverse width of the middle door type support;
the transverse width of the middle door type support is 0.8-1 m.
4. The lining pouring construction structure based on the assembled scaffold as claimed in claim 1 or 2, wherein: all the template counter-pull rods (12) on each bushing forming template are distributed in a plurality of rows from front to back, and each row of the template counter-pull rods (12) and one template stiffening rib (11) are distributed on the same tunnel cross section of the tunnel section (2) to be renovated; each row of template counter-pull rods (12) comprises a plurality of template counter-pull rods (12) distributed on the cross section of the same tunnel from top to bottom, and the outer end of each template counter-pull rod (12) extends out after passing through a steel template (10) and a template stiffening rib (11); each template stiffening rib (11) is provided with a plurality of through holes for the template counter-pull rods (12) to extend out.
5. The lining pouring construction structure based on the assembled scaffold as claimed in claim 4, wherein: every locating part (13) is all installed to template counter-pull rod (12) outer end, locating part (13) are located template stiffening rib (11) inboard, backing plate (14) are filled up between locating part (13) and template stiffening rib (11).
6. The lining pouring construction structure based on the assembled scaffold as claimed in claim 1 or 2, wherein: the cross section of the vertical grouting pipe (15) is circular and the diameter of the vertical grouting pipe is gradually reduced from top to bottom.
7. The lining pouring construction structure based on the assembled scaffold as claimed in claim 1 or 2, wherein: the vertical grouting pipe (15) is a PVC pipe.
8. The lining pouring construction structure based on the assembled scaffold as claimed in claim 1 or 2, wherein: the template stiffening ribs (11) are channel steel.
9. The lining pouring construction structure based on the assembled scaffold as claimed in claim 1 or 2, wherein: a lower chiseling groove (16) is formed in the outer side above each upper arch waist pouring section (8-2), the lower chiseling grooves (16) are horizontal grooves formed after chiseling concrete of the arch wall secondary lining, the lower chiseling grooves (16) are distributed along the longitudinal extension direction of the tunnel, the upper surface of each lower chiseling groove is a horizontal plane, and the two lower chiseling grooves (16) are symmetrically distributed;
an upper chiseling groove (17) is formed in the upper portion of the left side and the right side of the arch crown pouring section (8-1), the upper chiseling groove (17) is a horizontal groove formed after chiseling concrete in the arch wall secondary lining, the upper chiseling groove (17) is arranged along the longitudinal extension direction of the tunnel, and the upper surface of the upper chiseling groove is a horizontal plane; the upper chiseling grooves (17) above the left side and the right side of the vault pouring section (8-1) are symmetrically distributed.
10. The lining pouring construction structure based on the assembled scaffold as claimed in claim 1 or 2, wherein: the arched template further comprises a front end template and a rear end template, the front end template and the rear end template are wood templates and are respectively arranged on the front side and the rear side of the arched template, and each end template is arched.
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| CN201922161960.7U CN211038666U (en) | 2019-12-05 | 2019-12-05 | Sleeve lining pouring construction structure based on assembled scaffold |
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| CN201922161960.7U CN211038666U (en) | 2019-12-05 | 2019-12-05 | Sleeve lining pouring construction structure based on assembled scaffold |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116971798A (en) * | 2023-07-31 | 2023-10-31 | 中铁隧道集团二处有限公司 | Arch tunnel structure and arch tunnel construction method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116971798A (en) * | 2023-07-31 | 2023-10-31 | 中铁隧道集团二处有限公司 | Arch tunnel structure and arch tunnel construction method |
| CN116971798B (en) * | 2023-07-31 | 2024-05-10 | 中铁隧道集团二处有限公司 | Arch tunnel structure and arch tunnel construction method |
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