CN211500660U - Urban comprehensive pipe gallery and underground shallow buried underground excavation tunnel combined supporting system - Google Patents
Urban comprehensive pipe gallery and underground shallow buried underground excavation tunnel combined supporting system Download PDFInfo
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- CN211500660U CN211500660U CN202020105486.6U CN202020105486U CN211500660U CN 211500660 U CN211500660 U CN 211500660U CN 202020105486 U CN202020105486 U CN 202020105486U CN 211500660 U CN211500660 U CN 211500660U
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Abstract
The invention relates to the technical field of underground space construction, in particular to a combined supporting system of a city comprehensive pipe gallery and an underground shallow-buried underground tunnel. The method has the advantages of simple steps, strong operability, construction space saving and remarkable economic and social benefits.
Description
Technical Field
The invention relates to the technical field of underground space construction, in particular to a combined supporting system of an urban comprehensive pipe gallery and an underground shallow-buried underground tunnel.
Background
As urban road traffic flow increases, existing road designs have been difficult to meet traffic requirements. Meanwhile, pipelines required by life and work of surrounding residents are increased gradually, and pipelines under roads are laid densely. How to effectively solve the problem of traffic jam of ground roads in the existing red line range of the roads and the problem of orderly arrangement of various underground pipelines is a great civil problem which is particularly important and urgently needed to be solved in the current urban road construction process.
Above-mentioned problem can be at present road red line within range construction utility tunnel and solve the underground pipeline and lay the problem, builds underground road simultaneously and solves the current problem of road. However, the problem that the construction process is complicated is how to solve the technical problem, especially how to arrange the comprehensive pipe gallery and the underground road in the limited red line of the road, quickly and efficiently finish the construction, so that the occupied time of the urban road is reduced as much as possible, the construction period is shortened, and the influence of the surrounding environment is reduced. In order to save the occupied space and reduce the engineering quantity, the section form of the underground shallow-buried underground excavation tunnel structure can adopt a flat-top straight wall structure form on the premise of meeting the requirement of a road boundary. The excavation section requires a strong supporting system, and is not like the structure form of horseshoe shape, circular shape and the like adopted by the conventional tunnel structure form. Not only the tunnel arch support but also the straight walls on the two sides of the tunnel need to be supported, and the upper side and the left and right sides need to be comprehensively supported. The most critical process of the structural form engineering is as follows: and (4) supporting, solving the problem of quick and efficient supporting, smoothly constructing and shortening the engineering construction period.
Disclosure of Invention
The invention provides a combined supporting system and a combined supporting process for an urban comprehensive pipe gallery and an underground shallow-buried underground tunnel, aiming at overcoming the defects in the prior art.
The invention is realized by the following technical scheme:
a combined supporting system of an urban comprehensive pipe gallery and an underground shallow-buried underground tunnel comprises a vertical supporting structure, an assembled type leading large pipe shed guide wall and a tunnel leading large pipe shed; the vertical supporting structure comprises three rows of steel pipe piles; a row of steel pipe piles outside the pipe gallery, a row of steel pipe piles between the tunnels and the pipe gallery and a row of steel pipe piles outside the tunnels; the assembled advanced large pipe shed guide wall is prefabricated, and is connected with the steel pipe pile to form a transverse advanced large pipe shed guide wall; the tunnel advanced large pipe shed starts from the pipe gallery foundation pit and is perpendicular to the axial direction of the tunnel.
Furthermore, the tunnel adopts a straight-wall flat-top structure.
Further, the steel pipe pile is a miniature steel pipe pile.
Furthermore, the assembled type leading large pipe shed guide wall is formed by prefabricating and processing double-spliced I-steel and leading pipe shed steel sleeves.
Furthermore, the assembled leading large pipe shed guide wall is welded or bolted with the steel pipe pile.
The construction method of the urban comprehensive pipe gallery and underground shallow-buried underground excavation tunnel combined supporting system comprises the following steps:
planning line pipeline arrangement according to the red line width of a road, designing the design limit sizes of a pipe gallery and a tunnel, and determining the support structure form and the vertical support structure setting position; wherein vertical supporting construction steel-pipe pile is beaten design position and is designed for three rows, is respectively: one row outside the pipe gallery; one row is arranged between the tunnel and the pipe gallery, and one row is arranged outside the tunnel; prefabricating and processing the assembled leading large pipe shed guide wall;
firstly, three rows of vertical steel pipe pile supports are arranged in one-step driving mode, a road is sealed in the range of a pipe gallery foundation pit, the road above a tunnel continues to keep the road to pass, after road traffic and guide change are completed, a pipe gallery is excavated, the elevation is measured, the driving elevation of a tunnel vault large pipe shed is positioned, a spliced type leading large pipe shed guide wall is installed on the steel pipe pile to form a transverse leading large pipe shed guide wall, and then the tunnel leading large pipe shed is arranged in the pipe gallery foundation pit in a mode of being perpendicular to the axial direction of the tunnel;
and (III) after the construction of the pipe gallery structure is finished and the backfilling is finished, performing tunnel construction.
As a preferable scheme:
and in the step (II), driving the steel pipe pile between the tunnel and the pipe gallery to the deepest depth.
In the step (II), the driving distance of the steel pipe piles is 50-100 cm.
And in the step (III), the tunnel is constructed by adopting a straight-wall flat-top structure.
And (C) in the step (III), backfilling the adjacent part of the pipe gallery and the vault of the tunnel by adopting a light concrete structure.
The invention reasonably builds the underground comprehensive pipe gallery and the underground road in the limited red line range of the road, meets the requirements of municipal engineering, improves the efficiency and minimizes the influence on the society as much as possible. The underground road of the invention adopts a straight wall flat top structure form, can save construction space and reduce workload, and in order to ensure the safety of structure construction, the invention adopts a support system consisting of three micro steel pipe piles for vertical support, a prefabricated assembled advanced large pipe shed guide wall and a transverse tunnel advanced large pipe shed, and has the following advantages: 1. the miniature steel pipe piles are used as vertical isolation support piles to carry out vertical isolation support on the comprehensive pipe gallery and the underground excavated road, the advantage of quick construction of the miniature steel pipe piles is fully utilized, the miniature steel pipe piles can be suitable for quick operation in narrow spaces of cities, and the miniature steel pipe piles are quick in hole forming and strong in rigidity; 2. the prefabricated assembled leading large pipe shed guide wall is connected with the vertically arranged miniature steel pipe piles on site, so that the transverse leading large pipe shed guide wall is quickly formed, the construction steps of erecting a template on site, embedding steel sleeves, pouring concrete, waiting for the strength of a structure and then performing construction and the like in conventional construction are avoided, and the construction is quick and efficient; 3. the method comprises the following steps of utilizing a pipe gallery foundation pit as a pipe shed building space of an underground excavation road, and horizontally building an advanced pipe shed perpendicular to the excavation axial direction of a tunnel, so that the defect that a large pipe shed is conventionally built in the tunnel along the axial direction of the tunnel is overcome, conventionally building the large pipe shed in the tunnel along the axial direction of the tunnel, setting a pipe shed working room according to the length of each cycle building of the pipe shed, wherein a tunnel face cannot be continuously excavated when the pipe shed is built, temporarily sealing the tunnel face, building the tunnel in a tunneling way and performing grouting operation, so that the influence on the normal cycle construction of the tunnel is large, a large number of advanced pipe shed supports are needed for the urban shallow excavation tunnel, if the method of building the advanced pipe shed in the conventional tunnel is adopted, the construction progress is seriously delayed, and the angle building and the quality in the tunnel are not easy to ensure; the method can effectively solve the problems by transversely arranging the advanced pipe shed in the pipe gallery foundation pit, can arrange the pipe shed orderly in advance, does not interfere with excavation of a tunnel face in the tunnel, has the function of transversely advancing a guide wall of the large pipe shed, and can ensure the arrangement angle; utilize the piping lane operating space who has excavated simultaneously to carry out the leading big pipe canopy of transverse tunnel and beat and establish, beat in the saving hole and establish the time, improved and beaten and establish efficiency, guaranteed to beat and establish the quality.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
In the picture, 1 leading big pipe shed guide wall of pin-connected panel, 2 leading big pipe sheds in tunnel, 3 steel-pipe piles, 4 piping lane, 5 tunnels, 6 road red lines.
Detailed Description
The following embodiments of the present invention are provided, and it should be noted that the present invention is not limited to the following embodiments, and all equivalent changes based on the technical solutions of the present invention are within the protection scope of the present invention.
The utility model provides a city utility tunnel buries secretly with secret tunnel joint support system, includes vertical supporting construction, the leading big pipe shed guide wall of pin-connected panel 1 and the leading big pipe shed 2 in tunnel, wherein the leading big pipe shed guide wall of pin-connected panel 1 is connected with vertical supporting construction and is formed the horizontal leading big pipe shed guide wall.
Above-mentioned vertical supporting construction includes three rows of steel-pipe piles 3, and steel-pipe pile 3 selects to be miniature steel-pipe pile in this embodiment, and the miniature steel-pipe pile of make full use of is under construction swiftly, can be adapted to the narrow and small space fast operation in city, the pore-forming is fast, rigidity advantage such as strong, utilizes miniature steel-pipe pile as vertical isolation fender pile, carries out vertical isolation to piping lane 4 and secret excavation road and struts. The three rows of steel pipe piles 3 are respectively; one row of steel-pipe piles 3 outside the pipe gallery 4, one row of steel-pipe piles 3 between the tunnel 5 and the pipe gallery 4, and one row of steel-pipe piles 3 outside the tunnel 5, as shown in figure 1.
The assembled leading big pipe shed guide wall 1 is prefabricated in advance in a factory, and the assembled leading big pipe shed guide wall 1 is formed by prefabricating and processing a leading pipe shed steel sleeve with the diameter of 158mm by adopting 28I-steel of a double-assembling tool. The steel assembled advanced large pipe shed guide wall 1 is processed in advance, the miniature steel pipe piles which are vertically arranged are welded or bolted on site, the transverse advanced large pipe shed guide wall is quickly formed, the construction defects that in conventional construction, templates are erected on site, steel sleeves are embedded in advance, concrete is poured, and construction is carried out after strength of the structure is increased are avoided, and construction is quick and efficient.
The tunnel advancing large pipe shed 2 is different from the conventional tunnel advancing large pipe shed in the arranging direction, the conventional tunnel advancing large pipe shed is arranged along the 5 axial directions of the tunnel, the tunnel face cannot be continuously excavated when the pipe shed is arranged by the conventional arranging method, the tunnel face needs to be temporarily sealed, the tunnel is arranged in the hole and grouting operation is carried out, the influence on the normal circulating tunneling construction of the tunnel 5 is large, the construction progress is seriously delayed, and the arrangement angle and the quality in the hole are not easy to guarantee. The tunnel advancing large pipe shed 2 is arranged from a foundation pit of a pipe gallery 4 in a mode of being perpendicular to the axial direction of a tunnel 5, the pipe shed can be arranged orderly in advance in the arranging mode, interference with excavation of a tunnel face in the tunnel is avoided, and the arranging angle can be guaranteed due to the effect of the transverse advancing large pipe shed guide wall.
Preferably, the tunnel 5 is of a straight-wall flat top structure, and the tunnel 5 is of a straight-wall flat top structure, so that the occupied space can be saved, and the engineering quantity can be reduced.
The assembly type leading large pipe shed guide wall 1 and the steel pipe piles 3 are connected in various ways, and preferably, the connection between the assembly type leading large pipe shed guide wall and the steel pipe piles is performed by welding or bolting.
The construction method of the urban comprehensive pipe gallery and underground shallow-buried underground excavation tunnel combined supporting system comprises the following steps:
planning line pipeline layout according to 6 width on the red line of road, designing the design limit size of utility tunnel 4 and tunnel 5, and clear and definite supporting construction form and fender pile are beaten and are established the position.
Vertical supporting construction adopts miniature steel-pipe pile, and miniature steel-pipe pile diameter generally is 108mm, beats 3 rows altogether, is one row in the 4 outsides of pipe gallery respectively, beats between tunnel 5 and the pipe gallery 4 and establishes one row, and one row is established to 5 opposite sides in tunnel. The driving length of each row is optimized and adjusted according to design calculation, and the driving depth of the middle row is deepest. The distance between the miniature steel pipe piles driven along the line direction is 50cm-100cm, and the vertical depth of the miniature steel pipe piles generally exceeds 3-5m below the structural bottom plate.
The design foundation pit bottom burial depth of the pipe gallery 4 is about 10m, and the burial depth of the tunnel 5 is about 8m generally.
In a steel member processing factory, double-spliced I-steel is adopted, the diameter of the steel sleeve of the advanced pipe shed is 158mm, and the steel assembled advanced large pipe shed guide wall 1 is processed in advance.
Firstly, three rows of vertical micro steel pipe piles are arranged at one time for supporting, and grouting is carried out on stratums in the pipes in time. Road sealing is carried out in the range of the pipe gallery 4 foundation pit, and the road above the tunnel 5 continues to keep the road to pass. After road traffic is led and is changed the completion, at first carry out piping lane 4 excavation, line production, the foundation ditch excavation, after excavating the basement, clear up the peripheral soil body of pipe pile, measure the elevation and fix the construction elevation of 5 vault large pipe sheds in tunnel, after fixing the elevation, install prefabricated good leading large pipe shed guide wall 1 of pin-connected panel on vertical miniature steel-pipe pile, with leading large pipe shed guide wall 1 scene of pin-connected panel and the miniature steel-pipe pile welding or the bolt joint of vertical construction, form horizontal leading large pipe shed guide wall fast.
Transversely beat in 4 foundation pits of piping lane and establish the leading big pipe canopy 2 in tunnel, beat promptly the leading big pipe canopy 2 in tunnel and establish 5 axial directions in the perpendicular tunnel of direction, beat and establish in time carry out the slip casting after accomplishing. And (5) carrying out construction of a bottom plate, a waterproof top plate and a side wall top plate of the pipe gallery 4 structure, backfilling a foundation pit, flow process and the like.
And (III) after the construction of the pipe gallery 4 structure is completed and backfilling is completed, constructing a tunnel 5, wherein the 5 tunnel face of the tunnel keeps a reasonable distance from the working face of the pipe gallery 4. The tunnel 5 adopts a straight-wall flat-top structure, and because the 5 arch parts of the tunnel and the side walls on the two sides are all subjected to advanced pipe shed supporting construction, partial advanced supporting measures can be optimized, and the construction time of advanced supporting can be saved. And a construction and excavation method is reasonably selected according to the surrounding rock conditions, so that the working efficiency is greatly improved. The part of the pipe gallery 4 adjacent to the vault of the tunnel 5 is backfilled by adopting a light concrete structure, so that the backfilling is compact, the backfilling quality is reduced, and the vault load is reduced.
The above-described embodiment is only one of the preferred embodiments of the present invention, and general changes and substitutions by those skilled in the art within the technical scope of the present invention are included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a system is strutted with shallow undercut tunnel joint that buries in underground to city utility tunnel which characterized in that: the tunnel advanced large pipe shed comprises a vertical supporting structure, an assembled advanced large pipe shed guide wall (1) and a tunnel advanced large pipe shed (2); the vertical supporting structure comprises three rows of steel pipe piles (3); a row of steel pipe piles (3) outside the pipe gallery (4), a row of steel pipe piles (3) between the tunnel (5) and the pipe gallery (4), and a row of steel pipe piles (3) outside the tunnel (5); the assembled type leading large pipe shed guide wall (1) is prefabricated, and the assembled type leading large pipe shed guide wall (1) is connected with the steel pipe pile (3) to form a transverse leading large pipe shed guide wall; the tunnel advanced large pipe shed (2) starts from a pipe gallery (4) foundation pit and is perpendicular to the axial direction of the tunnel (5).
2. The urban comprehensive pipe gallery and underground shallow-buried underground excavation tunnel combined supporting system according to claim 1, characterized in that: the tunnel (5) is of a straight-wall flat-top structure.
3. The urban comprehensive pipe gallery and underground shallow-buried underground excavation tunnel combined supporting system according to claim 1, characterized in that: the steel pipe pile (3) is a miniature steel pipe pile.
4. The urban comprehensive pipe gallery and underground shallow-buried underground excavation tunnel combined supporting system according to claim 1, characterized in that: the assembled type leading large pipe shed guide wall (1) is formed by prefabricating and processing double-spliced I-shaped steel and leading pipe shed steel sleeves.
5. The urban comprehensive pipe gallery and underground shallow-buried underground excavation tunnel combined supporting system according to claim 1, characterized in that: the assembled leading large pipe shed guide wall (1) is welded or bolted with the steel pipe pile (3).
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110985042A (en) * | 2020-01-17 | 2020-04-10 | 济南城建集团有限公司 | Urban comprehensive pipe gallery and underground shallow-buried underground tunnel combined supporting system and process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110985042A (en) * | 2020-01-17 | 2020-04-10 | 济南城建集团有限公司 | Urban comprehensive pipe gallery and underground shallow-buried underground tunnel combined supporting system and process |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Kun Inventor after: Zhang Hao Inventor after: Guo Ning Inventor after: Song Yuting Inventor after: Li Yuexing Inventor after: Zhu Jian Inventor after: Shao Guangbiao Inventor after: Li Haibin Inventor after: Jin Bao Inventor before: Zhang Kun Inventor before: Zhang Hao Inventor before: Guo Ning Inventor before: Song Yuting Inventor before: Li Yuexing Inventor before: Zhu Jian Inventor before: Shao Guangbiao Inventor before: Li Haibin Inventor before: Jin Bao |
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| CB03 | Change of inventor or designer information |