CN105672356A - Underground structure of municipal pipeline group spanning tunnel and construction method for underground structure - Google Patents
Underground structure of municipal pipeline group spanning tunnel and construction method for underground structure Download PDFInfo
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- CN105672356A CN105672356A CN201610175052.1A CN201610175052A CN105672356A CN 105672356 A CN105672356 A CN 105672356A CN 201610175052 A CN201610175052 A CN 201610175052A CN 105672356 A CN105672356 A CN 105672356A
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- type groove
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- cover plate
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/10—Tunnels or galleries specially adapted to house conduits, e.g. oil pipe-lines, sewer pipes ; Making conduits in situ, e.g. of concrete ; Casings, i.e. manhole shafts, access or inspection chambers or coverings of boreholes or narrow wells
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
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- General Engineering & Computer Science (AREA)
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- Oil, Petroleum & Natural Gas (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses an underground structure of a municipal pipeline group spanning tunnel and a construction method for the underground structure. The construction method is characterized in that the municipal pipeline group underground structure is excavated by adopting a construction method of strip-divided and block-divided pouring in a spacing manner, and a pipe section, which is assembled by a U-shaped slot prefabricated by reinforced concrete or a bottom plate and a cover plate, of a box-type structure is quickly hoisted, and bagged sand is piled up on the pipe section structure to compensate unloading caused by earth excavation, so that zero unloading during a pipeline mounting group construction period is realized, and heave deformation of an inferior subway tunnel is controlled. The specific construction of the construction method comprises the steps such as bracing of a foundation pit, earth excavation, pipeline mounting and the like. Compared with the prior art, the construction method controls the heave deformation of the pit bottom and the subway tunnel, has small influence on a surrounding environment, has high working efficiency and has low engineering risk, and is especially suitable for a soft soil area, so that environmental adverse effect caused by excavation of the foundation pit is reduced to be lowest, and the tunnel heave deformation caused by soil unloading is effectively controlled.
Description
Technical field
The present invention relates to public works underground space technical field, specifically a kind of underground structure and constructional method thereof crossing over tunnel for soft clay area municipal pipeline group.
Background technology
Along with the fast development of urban underground space and the perfect of track traffic networking, conflicting between built subway tunnel and newly-built engineering is day by day outstanding, the situation carrying out excavation of foundation pit above operation tactics constantly occurs, brings new problem to the design of underground works, construction. The off-load protuberance of soil mass of foundation pit can cause lower section strata deformation, will cause lower sleeping tunnel heaving and threaten metro operation safety time serious. The distortion protection of metro shield tunnel normal operation requires very strict, it is desired to its final absolute displacement can not more than 10mm, and distortion radius-of-curvature is not less than 15000m, and local inclination is not more than 1/2500, and this just proposes huge challenge to engineering construction. At present, cause the protuberance in tunnel to be out of shape for reducing tunnel upper soil body off-load, generally adopt gate-type foundation stabilization at tunnel perimeter, anti-grand stake is set in both sides, tunnel simultaneously, and form overall anti-floating system by cast-in-situ beam slab structure, the protuberance in subway tunnel is controlled.
Prior art also exists long construction period, and job schedule is slow, and simultaneously when carrying out foundation stabilization and pile foundation construction, tunnel is caused bigger impact by construction itself.
Summary of the invention
A kind of municipal pipeline group that it is an object of the invention to design for the deficiencies in the prior art crosses over underground structure and the constructional method thereof in tunnel, adopt interval and point bar, the underground pipe canal structure that the U-type groove prefabricated with fast hoisting or base plate and cover plate form jointly is excavated in the jumping storehouse of piecemeal, and utilize the structural sand pocket ballast of underground pipe canal, compensate the off-load because soil excavation causes, reach basic zero off-load of construction period, thus the protuberance in subway tunnel, control lower section is out of shape preferably, simultaneously, set up distortion early warning, the dual control standard in controlling alarm and every block and wall scroll tunnel instructs information-aided construction, ensure the subway tunnel operating safety between underground utilities group's installation period, surrounding environment influence is little, working efficiency height, engineering risk is low, it is particularly useful for soft clay area, the environment disadvantageous effect that excavation of foundation pit is brought is reduced to bottom line, the tunnel heaving distortion that effectively control soil body off-load causes.
The concrete technical scheme realizing the object of the invention is: the municipal pipeline group underground structure of a kind of spanning over subway tunnel, it is characterized in that this municipal pipeline underground structure is assembled by some U-type groove, base plate and cover plate, described U-type groove, base plate and cover plate are precast member for reinforcing bar concrete, U-type groove is that interval is arranged and bottom between each U-type groove is connected by base plate, and cover plate is shelved in U-type groove to form the underground pipe canal of some box-structures.
The municipal pipeline group underground construction method of a kind of spanning over subway tunnel, it is characterized in that this municipal pipeline group underground structure adopts interval and point bar, the jumping storehouse excavation of piecemeal and lifting jointly to form the pipeline section of box-structure by reinforced concrete prefabricated U-type groove or base plate and cover plate, and it is loaded on pipe segment structure with bagged sand heap, compensate the off-load that soil excavation causes, realize zero off-load during pipeline installation, the protuberance distortion in subway tunnel, control lower section, Specific construction carries out in the steps below:
(1), bracing of foundation pit
That determines to cross over tunnel by design requirements buries territory, area under control, and the territory, area under control of burying according to determining carries out bracing of foundation pit, and Ji Keng both sides vertical with subway tunnel adopt gravity dam to go along with sb. to guard him, and the Ji Keng both sides parallel with subway tunnel adopt castinplace pile cover to beat three axes agitating pile and go along with sb. to guard him.
(2), groove section divides
Section longitudinal along subway tunnel and vertical with burying pipe in the base gone along with sb. to guard him is cheated is divided into some groove sections by design requirements, and in described some groove sections, hoisting prefabricated U-type groove and base plate, U-type groove and base plate are that interval is arranged and both sides groove section is U-type groove respectively; Bottom between the described each U-type groove plate that closes the lid after connecting by base plate forms the underground pipe canal of some box-structures;
(3), soil excavation
Above-mentioned some groove sections are divided into some construction segmentations by along burying pipe direction, each construction segmentation is divided into again some prefabricated tube sections, adopt interval and divide the jumping storehouse earth excavation of bar, piecemeal, then fast hoisting is prefabricated U-type groove or base plate and cover plate form pipe segment structure jointly, and preloading bagged sand on the cover plate of pipe segment structure as early as possible, after the pipe segment structure rigging out of each groove section, the installation of municipal pipeline group is carried out in the pipe ditch of each box-structure, after pipeline group installs, segmentation offloading bagged sand also removes cover plate, completes the backfill in pipe ditch.
It is fast that the present invention compared with prior art has construction speed, control tunnel heaving is out of shape, pipeline is easy for installation, accelerate the linking between each working procedure and shorten the whole construction duration, bar and the lifting construction of piecemeal excavation and underground utilities structure are divided in interval, the effectively protuberance distortion in the control end, hole and subway tunnel, surrounding environment influence is little, working efficiency height, engineering risk is low, being particularly useful for soft clay area, the environment disadvantageous effect that excavation of foundation pit is brought is reduced to bottom line, the tunnel heaving distortion that effectively control soil body off-load causes.
Accompanying drawing explanation
Fig. 1 is floor plan schematic diagram of the present invention;
Fig. 2 is present configuration schematic diagram;
Fig. 3 is sequence of construction figure of the present invention;
Fig. 4 is pipeline group's scheme of installation;
Fig. 5 is the A-A cross-sectional view of Fig. 4.
Embodiment
For municipal pipeline group's engineering of certain spanning over subway tunnel, the present invention is further elaborated below:
Embodiment 1
Being the subway tunnel in operation immediately below the base hole of this municipal pipeline engineering, the box-structure of its distance spanning over subway tunnel municipal pipeline is less than 6m, and Specific construction step is as follows:
(1), bracing of foundation pit
Consult accompanying drawing 1, by design requirements determine cross over tunnel bury territory, area under control, territory, area under control of burying according to determining carries out bracing of foundation pit, base pit area is 804, line distribution width is 20m, and the excavation degree of depth is 2.875～3.10m, and the castinplace pile cover that south cheated by base, both sides, north are work well is beaten three axes agitating pile 8 and gone along with sb. to guard him, base hole east, both sides, west are that gravity dam 7 is gone along with sb. to guard him, and the municipal pipeline group underground structure of spanning over subway tunnel 2 is the assembled box-structure of some U-type groove 4, base plate 5 and cover plate 6.
(2), groove section divides
Consult accompanying drawing 2, the municipal pipeline group underground structure of this spanning over subway tunnel 2 is assembled by some U-type groove 4, base plate 5 and cover plate 6, described U-type groove 4, base plate 5 and cover plate 6 are precast member for reinforcing bar concrete, U-type groove 4 for interval arrange and each U-type groove 4 between bottom connect by base plate 5, cover plate 6 is shelved on the underground pipe canal forming some box-structures in U-type groove 4.
Section longitudinal along subway tunnel 2 and vertical with burying pipe in the base gone along with sb. to guard him is cheated is divided into 5 groove sections by design requirements, wherein both sides and middle groove section are reinforced concrete prefabricated U-type groove 4, other two groove sections are reinforced concrete prefabricated base plate 5, and prefabricated cover plate 6 is shelved on the underground pipe canal being assembled into five box-structures in U-type groove 4.
(3), soil excavation
Consult accompanying drawing 3, the disadvantageous effect to subway tunnel, lower section 2 is unloaded for reducing the soil excavation of Ji Keng, above-mentioned 5 groove sections are divided into 8 construction segmentations by along burying pipe direction, 8 construction segmentations are divided into again 17 prefabricated tube sections, the length of its prefabricated tube section is 1.8～2.4m, this scantlings of the structure should be determined according to the ability of the arrangement of municipal pipeline group and lifting rig, the width of each prefabricated tube section and length consider existing lifting capacity of equipment, and soil excavation and U-type groove 4 can be ensured, base plate 5, a series of working procedures such as cover plate 6 and bagged sand 3 preloading subway stop transport during in complete. each prefabricated tube section adopts interval and divides the jumping storehouse earth excavation of bar, piecemeal, after last layer soil body above subway tunnel 2 excavates, the U-type groove 4 that fast hoisting is reinforced concrete prefabricated or base plate 5 and cover plate 6 form the box-structure of each prefabricated tube section, and on the cover plate 6 of box-structure preloading bagged sand 3, the preloading height of bagged sand 3 carries out calculating according to " zero off-load " principle and determines.
Described interval and point bar, the order that the jumping storehouse earth excavation of piecemeal marks by accompanying drawing 3 carry out: namely I-1 → I-2 → I-3 → I-4 → II-1 → II-2 → II-3 → II-4 → III-1 → III-2 → III-3 → III-4 → IV-1 → IV-2 → IV-3 → IV-4 → V-1 → V-2 → V-3 → V-4.
Consult accompanying drawing 4～accompanying drawing 5, after the pipe segment structure rigging out of each groove section, in the underground pipe canal of box-structure, carry out the installation of pipeline group 1, install rear segmentation offloading bagged sand 3 and remove cover plate 6, finally complete the backfill in pipe ditch.
The present invention is combined into the pipeline section of box-structure by reinforced concrete prefabricated U-type groove 4, base plate 5 and cover plate 6, and the structural system of preloading composition " zero off-load " is carried out with bagged sand 3, compensate the off-load because soil excavation causes, zero off-load during realizing pipeline construction, thus reach the protuberance distortion in control subway tunnel 2, simultaneously, coordinate the dual control standard setting up distortion early warning, controlling alarm and every block and each tunnel to instruct information-aided construction, ensure the subway circulation safety of municipal pipeline group between the installation period of underground.
More than just the present invention is further illustrated, it does not mean to restriction this patent, and all is the present invention's equivalence enforcement, all should be contained within the right of this patent.
Claims (2)
1. the municipal pipeline group underground structure of a spanning over subway tunnel, it is characterized in that this municipal pipeline group underground structure is assembled by some U-type groove, base plate and cover plate, described U-type groove, base plate and cover plate are precast member for reinforcing bar concrete, U-type groove be interval arrange and each U-type groove between bottom connect by base plate, cover plate is shelved in U-type groove, forms the underground pipe canal of some box-structures.
2. the municipal pipeline group underground construction method of spanning over subway tunnel described in a claim 1, it is characterized in that adopting interval and point bar, the jumping storehouse excavation of piecemeal and lifting jointly to form the pipeline section of box-structure by reinforced concrete prefabricated U-type groove or base plate and cover plate, and it is loaded on pipe segment structure with bagged sand heap, compensate the off-load that soil excavation causes, realize zero off-load during pipeline group's installation, the protuberance distortion in subway tunnel, control lower section, Specific construction carries out in the steps below:
(1), bracing of foundation pit
That determines to cross over tunnel by design requirements buries territory, area under control, and the territory, area under control of burying according to determining carries out bracing of foundation pit, and Ji Keng both sides vertical with subway tunnel adopt gravity dam to go along with sb. to guard him, and the Ji Keng both sides parallel with subway tunnel adopt castinplace pile cover to beat three axes agitating pile and go along with sb. to guard him;
(2), groove section divides
Section longitudinal along subway tunnel and vertical with burying pipe in the base gone along with sb. to guard him is cheated is divided into some groove sections by design requirements, and in described some groove sections, hoisting prefabricated U-type groove and base plate, U-type groove and base plate are that interval is arranged and both sides groove section is U-type groove respectively; Bottom between the described each U-type groove plate that closes the lid after connecting by base plate forms the underground pipe canal of some box-structures;
(3), soil excavation
Above-mentioned some groove sections are divided into some construction segmentations by along burying pipe direction, each construction segmentation is divided into again some prefabricated tube sections, adopt interval and divide the jumping storehouse earth excavation of bar, piecemeal, then fast hoisting is prefabricated U-type groove or base plate and cover plate form pipe segment structure jointly, and preloading bagged sand on the cover plate of pipe segment structure as early as possible, after the pipe segment structure rigging out of each groove section, the installation of municipal pipeline group is carried out in the underground pipe canal of each box-structure, after pipeline group installs, segmentation offloading bagged sand also removes cover plate, completes the backfill in pipe ditch.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610175052.1A CN105672356B (en) | 2016-03-25 | 2016-03-25 | A kind of municipal pipeline group's Underground Construction method of spanning over subway tunnel |
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| CN201610175052.1A CN105672356B (en) | 2016-03-25 | 2016-03-25 | A kind of municipal pipeline group's Underground Construction method of spanning over subway tunnel |
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| CN105672356A true CN105672356A (en) | 2016-06-15 |
| CN105672356B CN105672356B (en) | 2017-06-06 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106245679A (en) * | 2016-08-30 | 2016-12-21 | 中建三局第三建设工程有限责任公司 | Common pipe trench construction method is unloaded across subway shallow embedding open cut zero |
| CN107119716A (en) * | 2017-06-08 | 2017-09-01 | 宁波市交通规划设计研究院有限公司 | Tidal land tidal bore area vcehicular tunnel builds structure and its method |
| CN108374421A (en) * | 2018-02-08 | 2018-08-07 | 合肥市市政设计研究总院有限公司 | Municipal road construction and pipelining subregion discharging method are used for above existing tunnel |
| CN109778904A (en) * | 2017-11-15 | 2019-05-21 | 北京建工路桥集团有限公司 | A kind of Multi-layer road frame structure jump storehouse construction method |
| CN110159296A (en) * | 2019-06-14 | 2019-08-23 | 中国建筑一局(集团)有限公司 | A kind of structural system and its construction method of the deformation of control Shield-bored tunnels |
| CN110593308A (en) * | 2019-08-16 | 2019-12-20 | 浙江交工集团股份有限公司 | Open excavation back pressure construction method for foundation pit of overhead operation subway underground comprehensive pipe gallery |
| CN110593306A (en) * | 2019-07-29 | 2019-12-20 | 中船第九设计研究院工程有限公司 | Large-area underground space structure spanning operation subway tunnel and construction method thereof |
| CN114718075A (en) * | 2022-04-21 | 2022-07-08 | 安徽省交通规划设计研究总院股份有限公司 | Existing tunnel uplift control method under upper foundation pit excavation unloading condition |
| CN115059086A (en) * | 2022-06-29 | 2022-09-16 | 中铁第六勘察设计院集团有限公司 | Method for controlling subway deformation by foundation pit vertically excavated in diagonal and block-dividing mode |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106245679B (en) * | 2016-08-30 | 2018-04-17 | 中建三局第三建设工程有限责任公司 | Across subway shallow embedding open cut zero unloads common pipe trench construction method |
| CN106245679A (en) * | 2016-08-30 | 2016-12-21 | 中建三局第三建设工程有限责任公司 | Common pipe trench construction method is unloaded across subway shallow embedding open cut zero |
| CN107119716A (en) * | 2017-06-08 | 2017-09-01 | 宁波市交通规划设计研究院有限公司 | Tidal land tidal bore area vcehicular tunnel builds structure and its method |
| CN109778904A (en) * | 2017-11-15 | 2019-05-21 | 北京建工路桥集团有限公司 | A kind of Multi-layer road frame structure jump storehouse construction method |
| CN108374421A (en) * | 2018-02-08 | 2018-08-07 | 合肥市市政设计研究总院有限公司 | Municipal road construction and pipelining subregion discharging method are used for above existing tunnel |
| CN110159296A (en) * | 2019-06-14 | 2019-08-23 | 中国建筑一局(集团)有限公司 | A kind of structural system and its construction method of the deformation of control Shield-bored tunnels |
| CN110593306A (en) * | 2019-07-29 | 2019-12-20 | 中船第九设计研究院工程有限公司 | Large-area underground space structure spanning operation subway tunnel and construction method thereof |
| CN110593308A (en) * | 2019-08-16 | 2019-12-20 | 浙江交工集团股份有限公司 | Open excavation back pressure construction method for foundation pit of overhead operation subway underground comprehensive pipe gallery |
| CN110593308B (en) * | 2019-08-16 | 2021-05-18 | 浙江交工集团股份有限公司 | Open excavation back pressure construction method for foundation pit of overhead operation subway underground comprehensive pipe gallery |
| CN114718075A (en) * | 2022-04-21 | 2022-07-08 | 安徽省交通规划设计研究总院股份有限公司 | Existing tunnel uplift control method under upper foundation pit excavation unloading condition |
| CN114718075B (en) * | 2022-04-21 | 2023-10-20 | 安徽省交通规划设计研究总院股份有限公司 | Existing tunnel uplift control method under upper foundation pit excavation unloading condition |
| CN115059086A (en) * | 2022-06-29 | 2022-09-16 | 中铁第六勘察设计院集团有限公司 | Method for controlling subway deformation by foundation pit vertically excavated in diagonal and block-dividing mode |
| CN115059086B (en) * | 2022-06-29 | 2023-05-16 | 中铁第六勘察设计院集团有限公司 | Method for controlling deformation of subway by foundation pit excavated obliquely and in block vertical manner with subway |
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