CN211648187U - Underground passage small-section multi-pipe parallel jacking system - Google Patents
Underground passage small-section multi-pipe parallel jacking system Download PDFInfo
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- CN211648187U CN211648187U CN202020265898.6U CN202020265898U CN211648187U CN 211648187 U CN211648187 U CN 211648187U CN 202020265898 U CN202020265898 U CN 202020265898U CN 211648187 U CN211648187 U CN 211648187U
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Abstract
The utility model provides a parallel jacking system of underground passage small cross section multitube. The system comprises a small-section pipe jacking pipe joint used for forming a basic space of an underground passage and bearing stratum pressure, a cast-in-place replacement beam column structure used for replacing a small-section pipe jacking pipe joint side wall, an auxiliary gallery pipe jacking structure used for providing an operation space for cast-in-place construction of the cast-in-place replacement beam column structure, and a temporary support system used for temporarily bearing the top load of the small-section pipe jacking pipe joint when the small-section pipe jacking pipe joint side wall is dismantled and before the stress of the cast-in-place replacement beam column structure. The utility model discloses in, the replacement beam column adopts cast-in-place mode to execute the work, and the wholeness is good, and establishes the mode of supplementary gallery push pipe structure through the top, provides effectual operation face, not only can ensure cast-in-place concrete structure's the quality of pouring, can avoid the side wall to demolish the back in addition, and small cross section push pipe tube coupling top soil erosion and water loss, and then avoids inducing the too big deformation of overlying strata or sink, has improved the security of construction.
Description
Technical Field
The utility model relates to a pipe jacking method construction tunnel and underground works equip technical field, concretely relates to parallel jacking system of little section multitube of underground passage.
Background
The pipe jacking technique is a construction technique used for crossing various obstacles such as railways, roads, rivers, buildings and the like in underground pipe construction, and has been widely used in recent years for construction of urban traffic pedestrian roadways and underground common ditches. In the traditional large-section rectangular pipe jacking tunnel construction, a large pipe jacking machine with the same size as the excavated section is adopted for jacking construction, so that the problems that the pipe jacking construction technology is complex, the ground settlement is difficult to control, pipe joints are difficult to manufacture and transport, large reaction wall facilities are needed and the like are faced, and the construction is often difficult to implement especially in peripheral sensitive building dense areas. Therefore, in the actual design and construction process, in order to solve the above problems, a large-span channel space is usually divided into a plurality of small-span spaces for respective jacking construction, so as to form a multi-pipe parallel underground space type. Although the method can effectively avoid the related technical problems brought by the traditional large-section rectangular pipe jacking construction and improve the applicability of the pipe jacking method, the constructed underground passage has narrow space and poor visual effect due to the independent space systems of the pipe jacking structures, so that strong psychological depression is brought to people, and the large equipment and facilities are inconvenient to enter and exit during operation. Therefore, it is a further problem in the field to expand a small space into a large space to solve the problem of visual space effect.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a parallel jacking system of underground passage little section multitube has solved in the big section underground passage work progress, because of adopting the parallel difficult problem that the visual space effect that a plurality of little section push pipes formed is poor.
In order to realize the aim, the utility model provides an underground passage small-section multi-pipe parallel jacking system, which comprises a small-section jacking pipe joint, a cast-in-situ replacement beam column structure, an auxiliary gallery jacking pipe structure and a temporary support system; the small-section pipe jacking joint is used for forming a basic space of an underground passage and bearing external loads such as stratum pressure and the like; the cast-in-place replacement beam column structure straddles the side walls of two adjacent small-section jacking pipe joints; the device is used for replacing the side wall of the small-section jacking pipe joint and expanding the visual space; the auxiliary tunnel pipe jacking structure straddles above the side walls of the two adjacent small-section pipe jacking pipe joints; the construction method is used for providing an operation space for cast-in-place construction of a cast-in-place replacement beam column structure; the temporary support system is arranged inside the small-section jacking pipe joint and used for temporarily bearing the top load of the small-section jacking pipe joint during the dismantling of the side wall of the small-section jacking pipe joint and before the stress of the cast-in-place replacement beam column structure.
Preferably, the small-section top pipe joints are of round-angle frame type steel-concrete assembled structures, each section is 1.5m long, and each section comprises a reinforced concrete prefabricated part with a C-shaped section and a section steel component part for closing a C-shaped opening of the reinforced concrete prefabricated part; the reinforced concrete prefabricated part and the section steel component part are detachably connected through the connecting component.
Preferably, the section steel component part comprises 3 vertical rods and a back plate, the 3 vertical rods are arranged at intervals, the side faces of the vertical rods are detachably connected with the plate face of the back plate through bolts, and the side walls of the small-section jacking pipe joints are formed.
Preferably, the vertical upright posts are processed by I-shaped steel and are longitudinally distributed along the small-section jacking pipe joints at intervals of 0.5 m/root; the back plate is a rectangular plate made of a 1cm thick steel plate;
preferably, the connection assembly comprises a sleeve and a connector; the sleeves are made of customized steel pipes with internal threads and 30cm in length, are arranged in a double-layer mode at intervals of 20cm in the longitudinal direction, and are uniformly embedded in the small-section jacking pipe joints adjacent to the part of the section steel component; the connecting piece is including installing 1cm thick square steel backing plate and the bolt in pole setting tip, the bolt passes the backing plate and twists with the sleeve, the quantity and the sleeve one-to-one of bolt. Foundation bolts are selected as the bolts, and the number of the bolts is four; the number of the backing plates is two, the backing plates are respectively arranged at the joint of the reinforced concrete prefabricated part and the section steel component part and are detachably connected through the foundation bolts.
Preferably, the cast-in-place replacement beam column structure consists of a cast-in-place replacement top beam, a cast-in-place replacement column and a cast-in-place replacement ground beam, and is of a reinforced concrete structure; the cast-in-place replacement top beam is positioned at the upper part of the side wall, is combined and connected with two adjacent small-section top pipe joint top plates in a rib planting mode and is arranged in the longitudinal direction of the underground passage in a through-length mode; the cast-in-place replacement columns are positioned in the middle of the side wall, are uniformly arranged at intervals along the longitudinal direction of the underground passage at intervals of 4.5m, and are formed by combining the upper end and the lower end with the cast-in-place replacement top beam and the cast-in-place replacement ground beam in a cast-in-place mode respectively; the cast-in-place replacement ground beam is positioned on the lower part of the side wall, is connected with the two adjacent small-section jacking pipe joint bottom plates in a rib planting mode and is arranged in the longitudinal direction of the underground passage in a through-length mode.
Preferably, the auxiliary tunnel pipe jacking structure is a reinforced concrete pipe joint structure with a rectangular cross section; the bottom plate of the auxiliary gallery jacking pipe structure is uniformly provided with a plurality of openings, so that an operation surface is provided for cast-in-place construction of the cast-in-place replacement beam column structure.
Preferably, the side length of the cross section of the auxiliary gallery pipe jacking structure is 1-2 m, and the length of a pipe joint is 3-4.5 m; the open pore is of a rectangular structure with the side length of 0.5-1 m.
Preferably, the temporary support system comprises a section steel combined longitudinal beam and a steel pipe upright post; the section steel combined longitudinal beam is arranged at the upper end of the steel pipe upright post, is detachably connected through a bolt and is installed along the longitudinal length of the underground passage; the steel pipe upright posts are erected on the bottom plate of the small-section jacking pipe joint and evenly arranged at intervals along the longitudinal direction of the underground passage at intervals of 3 m.
Use the technical scheme of the utility model, following beneficial effect has:
(1) in the utility model, the large-span underground passage is divided into multi-pipe parallel small-span pipe jacking construction, the single excavation section is small, a large-scale jacking counterforce wall is not needed, the disturbance to the surrounding environment is small, and the stratum settlement deformation can be well controlled;
(2) in the utility model, the small-section pipe jacking pipe joints are arranged in parallel, the weight of the single small-section pipe jacking pipe joint is relatively light, and the hoisting and transportation are convenient;
(3) the utility model discloses in, adopt assembled shaped steel structure side wall, the dismouting of being convenient for, and reduced the tube coupling dead weight, shaped steel structure reuse simultaneously, material saving cost;
(4) the utility model discloses in, the replacement beam column adopts cast-in-place mode to execute the work, and the wholeness is good, and establishes the mode of supplementary gallery push pipe structure through the top, provides effectual operation face, not only can ensure cast-in-place concrete structure's the quality of pouring, can avoid the side wall to demolish the back in addition, and small cross section push pipe tube coupling top soil erosion and water loss, and then avoids inducing the too big deformation of overlying strata or sink, has improved the security of construction.
(5) The utility model discloses in, the combination of small cross section push pipe tube coupling forms big section push pipe, cuts apart in a flexible way, and the suitability is strong.
In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:
fig. 1 is a schematic view of the whole system of the present invention.
FIG. 2 is a structural diagram of the small-section pipe jacking pipe joint of the present invention.
Fig. 3 is the structure view of the cast-in-place replacement beam column of the utility model.
Fig. 4 is a structural diagram of the auxiliary tunnel pipe jacking structure of the utility model.
Fig. 5 is a structure diagram of the temporary support system of the present invention.
Fig. 6a to 6f are main construction process diagrams of the present invention.
The system comprises a small-section top pipe joint 1, a small-section top pipe joint 11, a reinforced concrete prefabricated part 12, a section steel component part 121, a vertical upright rod 122, a back plate 13, a sleeve 14, a connecting piece 141, a base plate 142, bolts 2, a cast-in-place replacement beam column structure 21, a cast-in-place replacement top beam 22, a cast-in-place replacement column 23, a cast-in-place replacement ground beam 3, an auxiliary gallery top pipe structure 31, a rectangular opening 4, a temporary support system 41, a section steel combined longitudinal beam 42 and a steel pipe column.
Detailed Description
The embodiments of the invention will be described in detail hereinafter with reference to the accompanying drawings, but the invention can be implemented in many different ways, which are defined and covered by the claims.
Example 1:
referring to fig. 1 to 6, a small-section multi-pipe parallel jacking system for an underground passage comprises a small-section jacking pipe joint 1, a cast-in-place replacement beam-column structure 2, an auxiliary gallery jacking pipe structure 3 and a temporary support system 4;
the small-section pipe jacking joint 1 is used for forming a basic space of an underground passage and bearing external loads such as stratum pressure and the like;
the cast-in-place replacement beam column structure 2 straddles the side walls of two adjacent small-section jacking pipe joints 1; the device is used for replacing the side wall of the small-section jacking pipe joint and expanding the visual space;
the auxiliary tunnel pipe jacking structure 3 straddles above the side walls of two adjacent small-section pipe jacking pipe joints 1; the construction method is used for providing an operation space for cast-in-place construction of a cast-in-place replacement beam column structure;
the temporary support system 4 is arranged inside the small-section jacking pipe joint 1 and used for temporarily bearing the top load of the small-section jacking pipe joint during the dismantling of the side wall of the small-section jacking pipe joint and before the stress of the cast-in-place replacement beam column structure.
As shown in fig. 1 and 2, the small-section top pipe joint 1 is a round-angle frame type steel-concrete fabricated structure, in this embodiment, three small-section top pipe joints are arranged in parallel, which are respectively named as a left pipe, a middle pipe and a right pipe, and each section is 1.5m long; the small-section top pipe joint 1 comprises a reinforced concrete prefabricated part 11 with a C-shaped section and a section steel component part 12 for closing a C-shaped opening of the reinforced concrete prefabricated part;
the reinforced concrete prefabricated part 11 and the section steel member part 12 are detachably connected through a connecting component;
the section steel component part 12 comprises 3 vertical rods 121 and a back plate 122, the 3 vertical rods 121 are arranged at intervals, the side faces of the vertical rods 121 are detachably connected with the plate face of the back plate 122 through bolts, and side walls of the small-section jacking pipe joint 1 are formed.
The vertical upright rods 121 are formed by processing I-shaped steel and are longitudinally distributed along the small-section jacking pipe joint 1 at intervals of 0.5 m/rod; the back plate 122 is a rectangular plate made of a 1cm thick steel plate;
the connecting assembly comprises a sleeve 13 and a connecting piece 14; the sleeve 13 is a customized steel pipe with internal threads and a length of 30cm, is arranged in a double-layer mode at a distance of 20cm along the longitudinal direction, and is uniformly embedded in the small-section jacking pipe joint 1 adjacent to the section steel component part 12;
the connecting piece 14 comprises a square steel backing plate 141 with the thickness of 1cm and bolts 142, wherein the square steel backing plate 141 is arranged at the end part of the vertical rod, the bolts 142 penetrate through the backing plate 141 and are screwed with the sleeves 13, and the number of the bolts 142 corresponds to that of the sleeves 13 one by one. Foundation bolts are selected as the bolts, and the number of the bolts is four; the number of the backing plates is two, the backing plates are respectively arranged at the joint of the reinforced concrete prefabricated part 11 and the section steel member part 12 and are detachably connected through the foundation bolts 142.
As shown in fig. 1 and 3, the cast-in-place replacement beam column structure 2 is composed of a cast-in-place replacement top beam 21, a cast-in-place replacement column 22 and a cast-in-place replacement ground beam 23, and is of a reinforced concrete structure;
the cast-in-place replacement top beam 21 is positioned at the upper part of the side wall, is combined and connected with the top plates of the two adjacent small-section top pipe joints 1 in a rib planting mode, and is arranged in the longitudinal direction of the underground channel;
the cast-in-place replacement columns 22 are positioned in the middle of the side wall, are uniformly arranged at intervals along the longitudinal direction of the underground passage at intervals of 4.5m, and are formed by combining and casting the upper end and the lower end with the cast-in-place replacement top beam 21 and the cast-in-place replacement ground beam 23 respectively;
the cast-in-place replacement ground beam 23 is positioned at the lower part of the side wall, is connected with the bottom plate combination of the two adjacent small-section jacking pipe joints 1 in a rib planting mode and is arranged in the longitudinal direction of the underground passage in a full-length mode.
As shown in fig. 1 and 4, the auxiliary gallery pipe jacking structure 3 is a reinforced concrete pipe joint structure with a rectangular cross section; the bottom plate of the auxiliary tunnel pipe jacking structure 3 is uniformly provided with a plurality of open holes 31, so that an operation surface is provided for cast-in-place construction of the cast-in-place replacement beam column structure 2.
The side length of the cross section of the auxiliary gallery pipe jacking structure 3 is 1-2 m, and the length of a pipe joint is 3-4.5 m; the opening 31 is of a rectangular structure with the side length of 0.5-1 m.
As shown in fig. 1 and 5, the temporary support system 4 comprises a section steel combined longitudinal beam 41 and a steel pipe upright 42;
the section steel combined longitudinal beam 41 is arranged at the upper end of the steel pipe upright post 42, is detachably connected through a bolt and is installed along the longitudinal length of an underground passage;
the steel pipe upright posts 42 are erected on the bottom plate of the small-section jacking pipe joint 1 and are uniformly arranged at intervals along the longitudinal direction of the underground passage at intervals of 3 m.
The construction method of the underground passage small-section multi-pipe parallel jacking system is characterized by comprising the following steps of:
the method comprises the following steps: constructing the small-section jacking pipe joint 1 by jacking pipe one by one according to the sequence of the middle and the two sides to form a multi-pipe parallel but mutually independent channel space, as shown in FIG. 6 a;
step two: constructing the auxiliary tunnel pipe jacking structure 3 above the side walls of two adjacent small-section pipe jacking pipe joints 1 to be replaced, wherein the bottom surface of the auxiliary tunnel pipe jacking structure 3 is tightly attached to the upper top surface of the constructed small-section pipe jacking pipe joint 1 and straddles the thickness range of the side walls of the adjacent pipe jacking pipes, as shown in FIG. 6 b;
step three: erecting the temporary support system 4 in the constructed small-section pipe jacking joint 1 as shown in FIG. 6 c;
step four: removing the section steel component part 12 of the assembled side wall of the small-section top pipe joint 1 section by section, wherein the removal range is the distance between 22 columns of the cast-in-place displacement column each time, and removing the middle-clamped soil body, as shown in FIG. 6 d;
step five: finishing the processes of planting bars, binding a reinforcement cage and installing a template of the cast-in-place replacement beam column structure 2 within the range of removing the section steel component part 12 of the assembly type side wall, as shown in figure 6 e;
step six: performing concrete pouring construction on the cast-in-place replacement beam column structure 2 of the current section from the auxiliary tunnel pipe jacking structure 3, curing for a specified time, and dismantling the temporary support system 4, as shown in fig. 6 f;
step seven: and repeating the third step to the sixth step until all replacement work is finished.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A small-section multi-pipe parallel jacking system for an underground channel is characterized by comprising a small-section jacking pipe joint (1), a cast-in-place replacement beam column structure (2), an auxiliary gallery jacking pipe structure (3) and a temporary support system (4);
the small-section pipe jacking joint (1) is used for forming a basic space of an underground passage and bearing formation pressure;
the cast-in-place replacement beam column structure (2) straddles the side walls of two adjacent small-section jacking pipe joints (1); the device is used for replacing the side wall of the small-section jacking pipe joint and expanding the visual space;
the auxiliary tunnel pipe jacking structure (3) straddles above the side walls of two adjacent small-section pipe jacking pipe joints (1); the construction method is used for providing an operation space for cast-in-place construction of a cast-in-place replacement beam column structure;
the temporary support system (4) is arranged inside the small-section jacking pipe joint (1) and used for temporarily bearing the top load of the small-section jacking pipe joint during the dismantling of the side wall of the small-section jacking pipe joint and before the stress of the cast-in-place replacement beam column structure.
2. A underground passage small-section multi-pipe parallel jacking system as claimed in claim 1, wherein said small-section jacking pipe section (1) comprises a reinforced concrete prefabricated part (11) with a C-shaped section and a section steel member part (12) for closing the C-shaped opening of the reinforced concrete prefabricated part;
the reinforced concrete prefabricated part (11) and the section steel component part (12) are detachably connected through a connecting component.
3. The underground passage small-section multi-pipe parallel jacking system as claimed in claim 2, wherein the section steel component part (12) comprises a plurality of vertical uprights (121) and a back plate (122), the vertical uprights (121) are arranged at intervals, and the side surfaces of the vertical uprights (121) are detachably connected with the plate surface of the back plate (122) to form the side walls of the small-section jacking pipe joint (1).
4. The underground passage small-section multi-pipe parallel jacking system according to claim 3, wherein the vertical uprights (121) are machined from I-steel and are distributed at equal intervals longitudinally along the small-section jacking pipe joints (1); the back plate (122) is a rectangular plate made of a steel plate.
5. A low profile multiple tubular parallel jacking system according to any one of claims 2 to 4 wherein said connecting assembly includes a sleeve (13) and a connector (14); the sleeve (13) is a steel pipe with internal threads and is embedded in the small-section jacking pipe joint (1) adjacent to the section steel component part (12);
the connecting piece (14) comprises a base plate (141) and bolts (142), the base plate (141) and the bolts (142) are mounted at the end of the vertical rod, the bolts (142) penetrate through the base plate (141) and are screwed with the sleeves (13), and the number of the bolts (142) corresponds to that of the sleeves (13) one by one.
6. The underground passage small-section multi-pipe parallel jacking system according to claim 1, wherein the cast-in-place displacement beam-column structure (2) consists of a cast-in-place displacement top beam (21), a cast-in-place displacement column (22) and a cast-in-place displacement ground beam (23), and is of a reinforced concrete structure;
the cast-in-place replacement top beam (21) is positioned at the upper part of the side wall, is combined and connected with the top plates of two adjacent small-section top pipe joints (1) in a rib planting mode and is arranged in a through-length mode along the longitudinal direction of an underground passage;
the cast-in-place replacement columns (22) are positioned in the middle of the side wall and are uniformly arranged at intervals along the longitudinal direction of the underground channel, and the upper end and the lower end of each cast-in-place replacement column are respectively combined with the cast-in-place replacement top beam (21) and the cast-in-place replacement ground beam (23) to form a cast-in-place structure;
the cast-in-place replacement ground beam (23) is positioned at the lower part of the side wall, is combined and connected with the bottom plates of the two adjacent small-section jacking pipe joints (1) in a rib planting mode, and is arranged in a through-length mode along the longitudinal direction of an underground passage.
7. The underground passage small-section multi-pipe parallel jacking system according to claim 1, wherein the auxiliary gallery jacking pipe structure (3) is a reinforced concrete pipe joint structure with a rectangular section;
the bottom plate of the auxiliary tunnel pipe jacking structure (3) is uniformly provided with a plurality of open holes (31), so that an operation surface is provided for cast-in-place construction of the cast-in-place replacement beam column structure (2).
8. The underground passage small-section multi-pipe parallel jacking system according to claim 7, wherein the side length of the section of the auxiliary gallery jacking pipe structure (3) is 1-2 m, and the length of a pipe joint is 3-4.5 m; the open pore (31) is of a rectangular structure with the side length of 0.5-1 m.
9. A small-section multi-pipe parallel jacking system for underground channels according to claim 1, wherein said temporary support system (4) comprises a steel section combined longitudinal beam (41) and a steel pipe upright column (42);
the section steel combined longitudinal beam (41) is arranged at the upper end of the steel pipe upright post (42), is detachably connected through a bolt and is installed along the longitudinal length of an underground passage;
the steel pipe upright posts (42) are erected on the bottom plate of the small-section jacking pipe joint (1) and are uniformly arranged at intervals along the longitudinal direction of the underground passage.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020265898.6U CN211648187U (en) | 2020-03-06 | 2020-03-06 | Underground passage small-section multi-pipe parallel jacking system |
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| CN202020265898.6U CN211648187U (en) | 2020-03-06 | 2020-03-06 | Underground passage small-section multi-pipe parallel jacking system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111236972A (en) * | 2020-03-06 | 2020-06-05 | 中南大学 | Underground channel small-section multi-pipe parallel jacking system and construction method |
| CN111236972B (en) * | 2020-03-06 | 2024-06-21 | 中南大学 | Multi-pipe parallel jacking system for small section of underground passage and construction method |
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2020
- 2020-03-06 CN CN202020265898.6U patent/CN211648187U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111236972A (en) * | 2020-03-06 | 2020-06-05 | 中南大学 | Underground channel small-section multi-pipe parallel jacking system and construction method |
| CN111236972B (en) * | 2020-03-06 | 2024-06-21 | 中南大学 | Multi-pipe parallel jacking system for small section of underground passage and construction method |
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