CN215979399U - Middle hole method mid-partition wall lining construction rack - Google Patents
Middle hole method mid-partition wall lining construction rack Download PDFInfo
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- CN215979399U CN215979399U CN202121761329.1U CN202121761329U CN215979399U CN 215979399 U CN215979399 U CN 215979399U CN 202121761329 U CN202121761329 U CN 202121761329U CN 215979399 U CN215979399 U CN 215979399U
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Abstract
A mid-tunnel method mid-partition lining construction rack comprises a bottom longitudinal beam formwork support and a mid-wall and top longitudinal beam formwork support. So both formed an overall system, can the segmentation piecemeal construction again simultaneously, segmentation equipment and dismantlement, be convenient for transport and assemble in little space, the material waste has also been reduced, whole form an annular system, the atress system is simple clear and definite, utilize the pull rod to form interior system of drawing, the rigidity and the first intensity of utilizing the rack form a whole, construction safety has been guaranteed, and end longeron is pour and is accomplished and can carry out straight wall and top longeron construction at once, construction progress has been accelerated, in time make the two lining structures of intermediate wall of well cave can earlier support, reduce ground subsides. Meanwhile, the flow process of the mid-partition wall is completed quickly, and effective solid support is provided for quick excavation of subsequent side pilot tunnels. The construction progress is accelerated, and the construction cost is saved.
Description
Technical Field
The utility model belongs to the technical field of tunnel construction, and particularly relates to a mid-hole method mid-partition wall lining construction rack.
Background
With the rapid development of national economy and social productivity since the 21 st century, the urbanization process of developing China is continuously accelerated, and the contradiction between urban population gathering and urban ground traffic infrastructure laggard is increasingly prominent in order to alleviate the contradiction. Modern city construction gradually starts to develop three-dimensional traffic, so that the development and utilization of urban underground space are more and more concerned and valued by people. Nowadays, the 19 th century is the century of bridges, the 20 th century is the century of high-rise buildings, and the 21 st century is the century of underground spaces in the field of civil and architectural engineering. Especially, the development and utilization of urban underground space will be unprecedented. And the problem of small soil and gold in cities can be solved by underground excavation.
The middle-tunnel method has the advantages of large applicable section, multiple driving operation faces, high speed, small influence on surrounding environment, relatively high construction safety and the like, and is widely applied to the construction process of underground tunnels of urban subways, municipal administration, electric power and the like. In a long period of time in future, tunnel projects such as domestic urban subway tunnels, hydraulic tunnels, river crossing tunnels, railway tunnels, municipal pipelines and the like need a large amount of tunnel underground excavation construction. Therefore, the development prospect of the tunnel underground excavation construction technology in China is very wide.
The middle tunnel method is particularly important for the construction of a second lining of a partition wall, wherein a middle pilot tunnel is firstly excavated, a tunnel top and a side wall support of a middle tunnel are made, and then a side tunnel is excavated. And the ground surface settlement is mainly caused by the fact that the vertical support is not in place, and the secondary lining structure of the intermediate wall of the middle hole can be supported earlier, so that the settlement is smaller. If the side cave method is used for firstly digging the side cave, making a side cave column beam and then digging the middle cave, because only lateral support is arranged in the early stage, the vertical direction mainly depends on the soil body for self-supporting, the settlement is easy, and the middle cave is dangerous when being dug.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model aims to provide the middle-hole method intermediate wall lining construction rack which has the advantages of high processing speed, simple mechanical structure and simplicity and convenience in operation, can reduce the assembling and adjusting preparation time of a trolley before two-lining pouring, reduces the number of operators, saves the working space in a hole, can repeatedly utilize the system rack and the like after one-section construction of the two-lining is finished, reduces the material waste, improves the labor productivity and reduces the construction cost.
In order to achieve the purpose, the utility model adopts the technical scheme that:
the utility model provides a middle hole method mid-board lining construction rack, includes that end longeron template supports and well wall and top longeron template support:
the bottom longitudinal beam formwork support is provided with a double-spliced 20b channel steel arch frame (9) and an 2015 steel mould (2); the channel steel arch frames (9) are lengthened and connected through connecting plate bolts, steel frames are connected through welding double-spliced steel pipes (4) in a welded mode, 2015 steel templates (2) and 3015 steel templates (7) are connected with double-spliced 20b channel steel arch frames (9) through hook head bolts, U-shaped cards are connected among the steel templates to form a whole, each channel steel arch frame is formed into a whole through a cross brace and an inclined brace (5), phi 16 arch frame tie bars (1) are pre-embedded before the 2015 steel templates (2) and the 3015 steel templates (7) are installed, main bars and distribution bars of a bottom longitudinal beam are welded, the part reserved with the templates is reinforced through a 3-shaped fastener and the welding double-spliced steel pipes (4), the vertical spacing between the phi 16 arch frame tie bars (1) is pre-embedded, and the longitudinal spacing is 0.7 m;
the middle wall and top longitudinal beam formwork support system is provided with 2015 steel moulds (2), double-spliced 20b channel steel back ridges (9) and H20I-steel stand columns (8); the middle partition wall template adopts a 3015 steel template (7), and the top longitudinal beam template adopts an 2015 steel template (2); one end of a channel steel of the double-spliced 20b channel steel arch frame (9) is connected with a reserved bottom longitudinal beam top formwork arch frame, the other end of the channel steel is connected with a primary support arch frame by using a connecting steel bar (11), and each channel steel is provided with a H-shaped 20 steel upright post (8);
the I-steel columns (8) of I-steel I-beam are lengthened and connected by connecting plate bolts, and the longitudinal connection of the back edges is welded by welding double-spliced steel pipes (4); 2015, connecting a steel template (2) with a back edge by using hook head bolts, and connecting steel moulds with an L-shaped bolt by using a U-shaped clamp; the formworks on the two sides of the intermediate wall and the top longitudinal beam are connected by a phi 16 pull rod (3), and the phi 16 pull rod (3) is reinforced by a 3-shaped fastener and a welded double-spliced steel pipe (4);
two I-steel cross braces (6) are arranged on the back edge of the middle partition wall, the vertical distance between the cross braces is 2.5m, one end of each cross brace is connected with the arch frame through a connecting bolt, and the other end of each cross brace is fixed on the primary support of the pilot tunnel; the top longitudinal beam side mold is a 18mm bamboo rubber plate (10) and is reinforced by adopting a welding double-spliced steel pipe (4), the middle partition wall end template adopts a shaping rigid template, the template reinforcement adopts the welding double-spliced steel pipe (4), the steel pipe is connected with an end I-steel arch frame back ridge, and I-steel inclined struts are adopted for reinforcement.
The bottom longitudinal beam formwork support and the middle wall and top longitudinal beam formwork support are constructed separately, the worker 20b cross braces (6) are symmetrically arranged to be propped against the pilot tunnel primary support and the double-spliced 20b channel steel arch centering (9), and the worker 20b cross braces (6) and the double-spliced 20b channel steel arch centering (9) are connected through connecting plates and bolts to form a closed arch centering ring.
The double-spliced 20b channel steel arch frame (9) is pre-bent in advance according to the line shape of a top longitudinal beam, and the longitudinal distance between channel steels is 1.5 m.
The phi 16 pull rods (3) are connected, and the vertical distance between the pull rods is 1.5m, and the longitudinal distance between the pull rods is 0.7m and 0.8 m.
The phi 16 pull rods (3) are connected, and the vertical distance between the pull rods is 1.5m, and the longitudinal distance between the pull rods is 0.7m and 0.8 m.
The utility model has the beneficial effects that:
the utility model relates to a mid-hole method mid-partition wall lining construction rack which comprises a bottom longitudinal beam formwork supporting system and a mid-wall and top longitudinal beam formwork supporting system. The whole system is formed, meanwhile, the segmented and block construction can be realized, the segmented and block assembly and disassembly are convenient to carry and assemble in a small space, the material waste is reduced, the whole annular system is formed integrally, the rigidity and the primary support strength of the rack form a whole, the construction safety is guaranteed, the bottom longitudinal beam is poured and finished, the construction of the vertical wall and the top longitudinal beam can be carried out at once, the construction progress is accelerated, the two lining structures of the middle partition wall of the middle hole can be supported earlier in time, and the ground settlement is reduced. Meanwhile, the flow process of the mid-partition wall is completed quickly, and effective solid support is provided for quick excavation of subsequent side pilot tunnels. The construction progress is accelerated, and the construction cost is saved.
Drawings
FIG. 1 is a bottom stringer template support architecture diagram of the present invention.
Fig. 2 is a diagram of the formwork support system for the middle wall and the top longitudinal beam of the present invention.
FIG. 3 is a side view of the middle hole method intermediate wall lining construction rack system of the present invention.
The steel truss structure comprises a phi 16 arch center embedded tie bar 1, an 2015 steel mould 2, a phi 16 pull rod 3, a welded double-spliced steel pipe 4, a cross brace 5, an inclined brace 6, an I-steel cross brace 7, a 3015 steel template 8, an I-steel stand column 8, a double-spliced 20b channel steel arch center 9, a 18mm bamboo plywood 10 and a connecting steel bar 11.
Detailed Description
The utility model will be further explained with reference to the accompanying drawings:
as shown in fig. 1, 2 and 3, a mid-hole method mid-partition lining construction rack comprises a bottom longitudinal beam formwork support, a middle wall and a top longitudinal beam formwork support, and is characterized in that:
the bottom longitudinal beam formwork support is provided with a double-spliced 20b channel steel arch frame (9) and an 2015 steel mould (2); the channel steel arch frames (9) are lengthened and connected through connecting plate bolts, the steel frames are connected through welding double-spliced steel pipes (4), 2015 steel templates (2) and 3015 steel templates (7) are connected with the double-spliced 20b channel steel arch frames (9) through hook head bolts, the steel templates are connected through U-shaped cards to form a whole, and each channel steel arch frame is formed into a whole through a transverse support and an inclined support (5);
the middle wall and top longitudinal beam formwork support system is provided with 2015 steel moulds (2), double-spliced 20b channel steel back ridges (9) and H20I-steel stand columns (8); the middle partition wall template adopts a 3015 steel template (7), and the top longitudinal beam template adopts an 2015 steel template (2); one end of a channel steel of the double-spliced 20b channel steel arch frame (9) is connected with a reserved bottom longitudinal beam top formwork arch frame, the other end of the channel steel is connected with a primary support arch frame by using a connecting steel bar (11), and each channel steel is provided with a H-shaped 20 steel upright post (8);
the I-steel columns (8) of I-steel I-beam are lengthened and connected by connecting plate bolts, and the longitudinal connection of the back edges is welded by welding double-spliced steel pipes (4); 2015, connecting a steel template (2) with a back edge by using hook head bolts, and connecting steel moulds with an L-shaped bolt by using a U-shaped clamp; the formworks on the two sides of the intermediate wall and the top longitudinal beam are connected by a phi 16 pull rod (3), and the phi 16 pull rod (3) is reinforced by a 3-shaped fastener and a double-spliced phi 48 steel pipe (4);
two I-steel cross braces (6) are arranged on the back edge of the middle partition wall, the vertical distance between the cross braces is 2.5m, one end of each cross brace is connected with the arch frame through a connecting bolt, and the other end of each cross brace is fixed on the primary support of the pilot tunnel; the side die of the top longitudinal beam is a 18mm bamboo rubber plate (10) and is reinforced by a steel pipe (4), the end die plate of the intermediate wall adopts a shaping rigid template, the die plate is reinforced by a double-spliced 48 steel pipe (4), the steel pipe is connected with the arch frame back edge of the end I-steel and is reinforced by an I-steel inclined strut.
The bottom longitudinal beam formwork support and the middle wall and top longitudinal beam formwork support are constructed separately, the worker 20b cross braces (6) are symmetrically arranged to be propped against the pilot tunnel primary support and the double-spliced 20b channel steel arch centering (9), and the worker 20b cross braces (6) and the double-spliced 20b channel steel arch centering (9) are connected through connecting plates and bolts to form a closed arch centering ring.
2015 steel form (2), 3015 steel form (7) and doublet 20b channel-section steel bow member (9) adopt the gib head bolted connection, use U type card between the steel mould to form a holistic stable system, pour and accomplish the back, the bow member is demolishd to layering segmentation, demolishs the template thereupon.
The intermediate wall and the top longitudinal beam two-side templates are connected through phi 16 pull rods (3), the vertical distance between the pull rods is 1.5m, the longitudinal distance between the pull rods is 0.7m and 0.8m, and the pull rods are reinforced through 3-shaped fasteners and double-spliced phi 48 steel pipes (4), so that the situation that the offset of a straight wall is influenced due to the over-shortage of a pilot tunnel is avoided in the pouring process.
Two I-steel cross braces (6) are installed on the back edge of the intermediate wall for ensuring the overall stability of the intermediate wall, the vertical distance between the cross braces is 2.5m, one end of each cross brace is connected with the arch frame through a connecting bolt, and the other end of each cross brace is fixed on the primary support of the pilot tunnel.
The side die of the top longitudinal beam is a 18mm bamboo plywood (10) which is reinforced by a steel pipe (4). The mid-partition end template adopts a shaping rigid template, the template reinforcement adopts a double-spliced 48 steel pipe (4), the steel pipe is connected with an end I-steel arch frame back ridge and is reinforced by an I-steel inclined strut, so that the single-side arch frame template forms a whole and is connected through a phi 16 pull rod (3), thereby forming a whole system by two side systems and ensuring the forming quality and safety in the pouring process.
The double-spliced 20b channel steel arch frame (9) is pre-bent in advance according to the line shape of a top longitudinal beam, and the longitudinal distance of channel steel is 1.5 m.
The phi 16 pull rods (3) are connected, and the vertical distance between the pull rods is 1.5m, and the longitudinal distance between the pull rods is 0.7m and 0.8 m.
The phi 16 arch tie bars (1) are welded with the main bars and the distribution bars of the bottom longitudinal beam, the part of the reserved template is reinforced by a 3-shaped fastener and a welded double-spliced steel pipe (4), the vertical spacing of the phi 16 arch tie bars (1) is embedded by 1.5m, and the longitudinal spacing is 0.7 m;
the working principle of the utility model is as follows:
the lining changing rack is formed by combining double-spliced 20b channel steel, welded double-spliced steel pipes, 2015 steel templates, 3015 steel templates and H20I-steel stand columns, and each channel steel arch frame is formed into a whole by adopting a cross brace and an inclined brace; one end of the supporting frame is connected with a primary supporting arch frame by using a connecting steel bar to form a closed arch frame ring, the closed arch frame ring is attached to the primary support of the pilot tunnel, and a counterforce is provided by the primary support of the pilot tunnel to support the system, so that the template support system is attached to the intermediate wall, a complete arch frame ring is locally formed, deformation does not occur in the construction process, and the supporting effect is achieved.
The steel arch frame has high integral rigidity and can provide high supporting rigidity so as to play a role in supporting the template and preventing the template from deforming in the concrete pouring process.
In this utility model, steel bow member can be fine combine together with steel pipe, template, pull rod, back of the body stupefied, I-steel stand etc. constitute and jointly strut, strengthen the validity that the system supported, and the atress condition evenly distributed.
The arch frame template system is convenient to mount and erect.
Claims (5)
1. The utility model provides a middle hole method mid-board lining construction rack, includes end longeron template support and well wall and top longeron template support, its characterized in that:
the bottom longitudinal beam formwork support is provided with a double-spliced 20b channel steel arch frame (9) and an 2015 steel mould (2); the double-spliced 20b channel steel arch frames (9) are lengthened by adopting connecting plate bolts, the steel frames are connected by welding double-spliced steel pipes (4), 2015 steel moulds (2) and 3015 steel templates (7) are connected with the double-spliced 20b channel steel arch frames (9) by hook head bolts, the steel moulds are connected by U-shaped cards to form a whole, each channel steel arch frame is formed into a whole by adopting a cross brace and an inclined brace (5), meanwhile, phi 16 arch frame tie bars (1) are pre-embedded before the 2015 steel moulds (2) and the 3015 steel templates (7) are installed and are welded with main bars and distribution bars of a bottom longitudinal beam, the part of a reserved template is reinforced by a '3' type fastener and the welded double-spliced steel pipes (4), the vertical spacing between the phi 16 arch frame tie bars (1) is pre-embedded, and the longitudinal spacing is 0.7 m;
the middle wall and top longitudinal beam formwork supporting system is provided with 2015 steel moulds (2), double-spliced 20b channel steel arch frames (9) and H20I-steel stand columns (8); the middle partition wall template adopts a 3015 steel template (7), and the top longitudinal beam template adopts an 2015 steel template (2); one end of a channel steel of the double-spliced 20b channel steel arch frame (9) is connected with a reserved bottom longitudinal beam top formwork arch frame, the other end of the channel steel is connected with a primary support arch frame by using a connecting steel bar (11), and each channel steel is provided with a H-shaped 20 steel upright post (8);
the I-steel columns (8) of I-steel I-beam are lengthened and connected by connecting plate bolts, and the longitudinal connection of the back edges is welded by welding double-spliced steel pipes (4); 2015 connecting a steel mould (2) with a back edge by hook bolt, and connecting the steel mould with an L-shaped bolt by using a U-shaped clamp; the formworks on the two sides of the intermediate wall and the top longitudinal beam are connected by a phi 16 pull rod (3), and the phi 16 pull rod (3) is reinforced by a 3-shaped fastener and a welded double-spliced steel pipe (4);
two I-steel cross braces (6) are arranged on the back edge of the middle partition wall, the vertical distance between the cross braces is 2.5m, one end of each cross brace is connected with the arch frame through a connecting bolt, and the other end of each cross brace is fixed on the primary support of the pilot tunnel; the top longitudinal beam side mold is a 18mm bamboo rubber plate (10) and is reinforced by adopting a welding double-spliced steel pipe (4), the middle partition wall end template adopts a shaping rigid template, the template reinforcement adopts the welding double-spliced steel pipe (4), the steel pipe is connected with an end I-steel arch frame back ridge, and I-steel inclined struts are adopted for reinforcement.
2. The mid-tunnel method mid-partition lining construction rack as claimed in claim 1, wherein the bottom longitudinal beam formwork support and the mid-wall and top longitudinal beam formwork support are constructed separately, the I-steel cross braces (6) are symmetrically arranged to be propped against the pilot tunnel primary support and the double-spliced 20b channel steel arch centering (9), and the I-steel cross braces (6) and the double-spliced 20b channel steel arch centering (9) are connected by connecting plate bolts to form a closed arch ring.
3. A mid-tunnel method mid-wall lining construction rack as claimed in claim 1, wherein said double-split 20b channel arches (9) are pre-bent in advance according to the line shape of the top longitudinal beam, and the longitudinal spacing of the channels is 1.5 m.
4. A mid-hole method mid-wall lining construction rack as claimed in claim 1, wherein the phi 16 tie rods (3) are connected with a vertical spacing of 1.5m and longitudinal spacing of 0.7m and 0.8 m.
5. A mid-hole method mid-wall lining construction rack as claimed in claim 1, wherein the phi 16 tie rods (3) are connected with a vertical spacing of 1.5m and longitudinal spacing of 0.7m and 0.8 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121761329.1U CN215979399U (en) | 2021-07-30 | 2021-07-30 | Middle hole method mid-partition wall lining construction rack |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121761329.1U CN215979399U (en) | 2021-07-30 | 2021-07-30 | Middle hole method mid-partition wall lining construction rack |
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| CN215979399U true CN215979399U (en) | 2022-03-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115045669A (en) * | 2022-08-11 | 2022-09-13 | 湖南省交通规划勘察设计院有限公司 | Construction method of super-large section double-arch tunnel in weak stratum |
-
2021
- 2021-07-30 CN CN202121761329.1U patent/CN215979399U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115045669A (en) * | 2022-08-11 | 2022-09-13 | 湖南省交通规划勘察设计院有限公司 | Construction method of super-large section double-arch tunnel in weak stratum |
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