CN114000541B - Cross-arrangement underground complex structure and split construction method thereof - Google Patents
Cross-arrangement underground complex structure and split construction method thereof Download PDFInfo
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- CN114000541B CN114000541B CN202111492734.2A CN202111492734A CN114000541B CN 114000541 B CN114000541 B CN 114000541B CN 202111492734 A CN202111492734 A CN 202111492734A CN 114000541 B CN114000541 B CN 114000541B
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- 238000010276 construction Methods 0.000 title claims abstract description 66
- 239000002356 single layer Substances 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 111
- 239000010959 steel Substances 0.000 claims description 111
- 239000010410 layer Substances 0.000 claims description 16
- 239000004576 sand Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 description 13
- 238000009412 basement excavation Methods 0.000 description 10
- 239000002689 soil Substances 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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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- 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
- E02D29/04—Making large underground spaces, e.g. for underground plants, e.g. stations of underground railways; Construction or layout thereof
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- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The invention discloses a cross-arrangement underground complex structure and a split construction method thereof, and relates to the technical field of underground building engineering. The invention discloses a split construction method of a cross-arranged underground comprehensive structure, which adopts open cut forward construction to construct an underground pedestrian passageway, an underground public transportation passageway and an underground corridor passageway, and adopts cover cut forward construction to construct a first underground business passageway and a single-layer section second underground business passageway communicated with the first underground business passageway under the underground pedestrian passageway, the underground public transportation passageway and the underground corridor passageway in the same period after the construction of the underground pedestrian passageway, the underground public transportation passageway and the underground corridor passageway is completed and put into operation. The split construction method can ensure that main matched settings affecting the operation of the high-speed railway such as underground pedestrian channels, underground public transportation channels, underground corridor channels and the like can be synchronously put into operation with the high-speed railway station, and provides a guarantee for the on-schedule put into operation of high-speed railway station matched facilities with a short construction period.
Description
Technical Field
The invention relates to the technical field of underground construction engineering, in particular to a cross-arrangement underground complex structure and a split construction method thereof.
Background
In the vicinity of a high-speed railway station, for intensive utilization of underground space resources, matched underground pedestrian passages, underground bus lanes, underground corridor passages for communicating the high-speed railway station and a station front square, underground business passages for communicating surrounding business facilities and the like are required to be intensively and alternately arranged, and construction is carried out by adopting an open cut method, so that an underground comprehensive structure with cross arrangement is formed.
According to the conventional open excavation procedure arrangement, after the construction of the negative two-layer structure is completed, the underground pedestrian passageway, the underground bus lane and the underground corridor passageway of the negative one-layer structure can be constructed, however, as the underground pedestrian passageway, the underground bus lane and the underground corridor passageway communicated with the high-speed railway station of the negative one-layer structure are required to be synchronously put into operation along with the opening operation of the high-speed railway station, in order to ensure the on-schedule completion of the negative one-layer structure, the split construction method of the cross-arrangement underground complex structure is necessary to be invented, so that the defects in the prior art are overcome.
Disclosure of Invention
The invention aims to provide a cross-arrangement underground comprehensive structure and a split construction method thereof, which solve the technical problem that the cross-arrangement underground comprehensive structure in the prior art cannot ensure that underground pedestrian passages, underground public transportation passages, underground corridor passages and high-speed railway stations are synchronously operated by adopting an open excavation method. The technical effects that can be produced by the preferred technical scheme of the present invention are described in detail below.
In order to achieve the above purpose, the present invention provides the following technical solutions:
The invention discloses a split construction method of a cross-arranged underground comprehensive structure, which adopts open cut forward construction to construct an underground pedestrian passageway, an underground public transportation passageway and an underground corridor passageway, and adopts cover excavation forward construction to construct a first underground business passageway and a single-layer section second underground business passageway communicated with the first underground business passageway under the underground pedestrian passageway, the underground public transportation passageway and the underground corridor passageway after the construction of the underground pedestrian passageway, the underground public transportation passageway and the underground corridor passageway is finished and put into operation.
According to a preferred embodiment, the construction of the underground pedestrian passageway, the underground bus passageway and the underground corridor passageway by adopting open cut forward construction comprises the following steps: constructing a first enclosure: the first enclosure structure adopts a bored pile with the diameter of 1000mm, and is arranged in a preset embedding depth; constructing a bearing pile of the steel pipe column, and hoisting the steel pipe column: the bearing pile is a bored pile with the diameter of 1200mm, a steel pile casing is adopted for supporting in the range of the steel pipe column, the steel pipe column is constructed in the steel pile casing, and fine sand is backfilled; digging downwards from the ground to the position of a top plate of the underground complex structure, constructing a pile crown beam, and erecting a first steel support structure; continuously excavating the foundation pit downwards to the position of the middle plate; constructing a middle plate and a side wall, finishing the structure pouring of the underground pedestrian passageway, the underground bus passageway and the underground corridor passageway, reserving an underground corridor interface at the outlet of the underground corridor passageway, and constructing a top plate; and removing the pile top support and recovering the pavement.
According to a preferred embodiment, constructing the first underground utility tunnel and the second underground utility tunnel using a top-down construction includes the steps of: constructing a second enclosure of the second subterranean business aisle; excavating a foundation pit of the second underground business channel to the bottom surface of the crown beam, and erecting a second steel support structure; excavating a foundation pit of the second underground business channel to a preset position, and erecting a third steel support structure; excavating residual earthwork of a foundation pit of a first underground business channel and a foundation pit of a second underground business channel, and erecting a fourth steel supporting structure; and constructing the first underground business channel and the second underground business channel, and reserving business interfaces at the outlet of the second underground business channel.
The cross-arrangement underground complex structure constructed by the split construction method comprises an underground pedestrian passageway, an underground public transportation passageway, an underground corridor passageway and an underground commercial passageway, wherein the underground pedestrian passageway, the underground public transportation passageway and the underground corridor passageway are arranged in a cross manner; the underground business channel comprises a first underground business channel and a second underground business channel, the first underground business channel is positioned below the underground pedestrian channel, the underground public transportation channel and the underground corridor channel, and the second underground business channel is of a single-layer section structure and is communicated with the first underground business channel.
According to a preferred embodiment, the height of the second subterranean business channel satisfies: h1 is less than or equal to H2 and less than or equal to H0+H2, wherein H0 is the height of the underground pedestrian passageway, or the height of the underground public transportation passageway, or the height of the underground corridor passageway; h1 is the height of the first subterranean business channel; h2 is the height of the second subterranean business channel.
According to a preferred embodiment, the cross-laid utility structure further comprises an underground corridor interface, and the underground corridor interface is disposed at an outlet of the underground corridor channel, and the underground corridor interface is used for communicating with a high-speed railway station or a station square.
According to a preferred embodiment, the cross-over underground utility structure further comprises a business interface, and the business interface is disposed at the outlet of the second underground utility tunnel, the business interface being for communication with a business district.
According to a preferred embodiment, the cross-over-laid underground complex structure further comprises a soil covering layer covering the underground pedestrian passageway, the underground bus passageway, the underground vestibule passageway, and the second underground business passageway, and a ground road above the soil covering layer.
According to a preferred embodiment, the underground pedestrian passageway, the underground public transportation passageway and the underground corridor passageway comprise a first enclosure structure, steel pipe columns, a first steel supporting structure, a middle plate, side walls and a top plate, wherein the first enclosure structure is positioned at the edges of the underground pedestrian passageway, the underground public transportation passageway and the underground corridor passageway area to be constructed and built; the steel pipe column is positioned in the area surrounded by the first enclosure structure, is fixed on the bearing pile and is sleeved with a steel protection cylinder; the first steel support structure is arranged at the top position of the steel pipe column; the middle plate is fixed at a preset position of the steel pipe column, the side wall is arranged in parallel with the first enclosure structure and/or the steel pipe column, and the top plate is fixed at the top end of the first enclosure structure and/or the steel pipe column; the first enclosure structure is a bored pile with the diameter of 1000 mm; the steel pipe column is a steel pipe with the diameter of 800mm and the wall thickness of 16 mm; the bearing pile is a bored pile with the diameter of 1200 mm.
According to a preferred embodiment, the first and second underground utility tunnel comprises a second enclosure, a second steel support structure, a third steel support structure, and a fourth steel support structure, wherein the second enclosure is located at an edge of the second underground utility tunnel region to be constructed; the second steel support structure is arranged at the bottom surface of the crown beam, and is positioned in the second underground business channel to be constructed; the third steel support structures are arranged below the second steel support structures at intervals, and the third steel support structures are positioned in the second underground business channel to be constructed and built; the fourth steel support structures are arranged below the third steel support structures at intervals, and the fourth steel support structures are located in the first underground business channel and the second underground business channel to be constructed and built.
The cross-arrangement underground complex structure and the split construction method thereof provided by the invention have at least the following beneficial technical effects:
The split construction method of the cross-arranged underground comprehensive structure adopts open cut forward construction to construct the underground pedestrian passageway, the underground public transportation passageway and the underground corridor passageway, and after the underground pedestrian passageway, the underground public transportation passageway and the underground corridor passageway are constructed and put into operation, the cover cut forward construction is adopted to construct a first underground commercial passageway positioned below the underground pedestrian passageway, the underground public transportation passageway and the underground corridor passageway and a single-layer section second underground commercial passageway communicated with the first underground commercial passageway in the same period, namely the split construction method is provided for the cross-arranged underground comprehensive structure, so that the main matched settings of the underground pedestrian passageway, the underground public transportation passageway and the underground corridor passageway and the like, which influence the operation of a high-speed railway station, can be synchronously put into operation with the high-speed railway station, and the guarantee is provided for the on-schedule input operation of the high-speed railway station matched facilities with a short construction period.
The cross-arranged underground comprehensive structure is built by adopting the split building method of any technical scheme, so that underground pedestrian channels, underground public transportation channels and underground corridor channels of the cross-arranged underground comprehensive structure can be synchronously put into operation with a high-speed railway station.
The cross-arranged underground comprehensive structure and the split construction method thereof solve the technical problem that the cross-arranged underground comprehensive structure in the prior art cannot ensure that underground pedestrian passages, underground public transportation passages, underground corridor passages and high-speed railway stations are synchronously operated by adopting an open excavation method.
In addition, the cross-arranged underground complex structure has the following advantages: (1) underground space resources can be utilized intensively; (2) The method is convenient for passengers to enter the station and enter the peripheral matched commercial facilities, so that a high-speed railway station, a station front square, a pedestrian passageway, a bus passageway, the peripheral commercial facilities and the like are formed into an interconnection and intercommunication underground hub, and great convenience is provided for passengers to enter the station, leave the station, relax, shop and the like.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic illustration of a preferred embodiment of a cross-over arranged underground complex structure of the present invention;
FIGS. 2-7 are schematic views of steps of constructing an underground pedestrian passageway 11, an underground bus passageway 12 and an underground gallery passageway 13 by adopting open cut forward construction;
Fig. 8-12 are schematic views of the steps of the present invention for constructing a first subterranean business channel 141 and a second subterranean business channel 142 using a top-down construction.
In the figure: 11. a pedestrian passageway; 12. an underground bus passage; 13. an underground corridor channel; 141. a first subterranean business channel; 142. a second subterranean business channel; 15. an underground gallery interface; 16. a business interface; 17. covering a soil layer; 18. ground roads; 101. a first enclosure; 102. a steel pipe column; 103. carrying piles; 104. a steel pile casing; 105. a first steel support structure; 106. a middle plate; 107. a side wall; 108. a top plate; 201. a second enclosure; 202. a second steel support structure; 203. a third steel support structure; 204. and a fourth steel supporting structure.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, based on the examples herein, which are within the scope of the invention as defined by the claims, will be within the scope of the invention as defined by the claims.
The cross-laid underground complex structure of the present invention and the split construction method thereof will be described in detail with reference to fig. 1 to 12 of the accompanying drawings and examples 1 and 2.
Example 1
The split construction method of the cross-laid underground complex structure of the present invention will be described in detail.
The split construction method of the underground utility structure of the present embodiment adopts open cut forward construction to construct the underground pedestrian passageway 11, the underground public transportation passageway 12 and the underground corridor passageway 13, and adopts cover cut forward construction to construct the first underground business passageway 141 and the single-layer section second underground business passageway 142 which are positioned below the underground pedestrian passageway 11, the underground public transportation passageway 12 and the underground corridor passageway 13 after the construction of the underground pedestrian passageway 11, the underground public transportation passageway 12 and the underground corridor passageway 13 is completed and put into operation. As shown in fig. 1, the underground pedestrian passageway 11, the underground public transportation passageway 12, and the underground utility passageway 13 are located at the negative first floor, the first underground utility passageway 141 is located at the negative second floor, and the second underground utility passageway 142 has a single-layer segment structure. The split construction method of this embodiment is to construct the structure of the negative first layer by adopting the open-cut forward construction, and to construct the second underground business channel 142 of the negative second layer structure and the single-layer section structure by adopting the cover-cut forward construction at the same time after the construction of the negative first layer is completed and put into operation.
Aiming at the cross-arrangement underground comprehensive structure, the embodiment provides a split construction method, which can ensure that main matched settings of the underground pedestrian passageway 11, the underground bus passageway 12, the underground corridor passageway 13 and the like which affect the operation of the high-speed railway can be synchronously put into operation with the high-speed railway station, and provides a guarantee for the on-schedule put into operation of high-speed railway station matched facilities with short construction period. The split construction method of the cross-arranged underground comprehensive structure solves the technical problem that the cross-arranged underground comprehensive structure in the prior art cannot ensure that underground pedestrian passages, underground public transportation passages, underground corridor passages and high-speed railway stations are synchronously operated by adopting an open excavation method.
According to a preferred embodiment, the construction of the underground pedestrian passageway 11, the underground bus passageway 12, and the underground gallery passageway 13 using open cut forward construction includes the steps of:
s101: the first enclosure 101 is constructed. Specifically, the first enclosure structure 101 adopts a bored pile with a diameter of 1000mm, and the first enclosure structure 101 is arranged in a preset embedding depth, as shown in fig. 2.
S102: and constructing a bearing pile 103 of the steel pipe column 102, and hoisting the steel pipe column 102. Specifically, the bearing pile 103 is a bored pile with the diameter of 1200mm, a steel pile casing 104 is used for supporting in the range of the steel pipe column 102, the steel pipe column 102 is applied in the steel pile casing 104, and fine sand is backfilled, as shown in fig. 3. The construction flow of the procedure is as follows: checking holes, placing pile foundation reinforcement cages, pouring pile foundation C35 super-retarding concrete, pressing in the steel pipe column 102, placing reinforcement cages and pouring C50 self-compacting micro-expansive concrete.
S103: from the ground, excavation is started down to the position of the top plate 108 of the underground complex structure, pile top crown beams are applied, and a first steel support structure 105 is erected, as shown in fig. 4.
S104: the excavation continues down to the location of the midplane 106 as shown in figure 5.
S105: the middle plate 106 and the side wall 107 are constructed, the structure pouring of the underground pedestrian passageway 11, the underground public transportation passageway 12 and the underground corridor passageway 13 is completed, the underground corridor interface 15 is reserved at the outlet of the underground corridor passageway 13, and the top plate 108 is constructed as shown in fig. 6.
S106: the pile top support is removed and the pavement is restored as shown in fig. 7.
According to a preferred embodiment, the construction of the first underground utility tunnel 141 and the second underground utility tunnel 142 using the top-down construction includes the steps of:
S201: a second enclosure 201 of the second subterranean business channel 142 is constructed as shown in fig. 8.
S202: excavation of the foundation pit of the second subterranean business channel 142 to the bottom of the crown beam and erection of the second steel support structure 202 is performed as shown in fig. 9.
S203: excavation of the pit of the second underground utility tunnel 142 to a predetermined position, and erection of a third steel support structure 203 is performed as shown in fig. 10.
S204: the foundation pit of the first underground business channel 141 and the residual earthwork of the foundation pit of the second underground business channel 142 are excavated, and a fourth steel support structure 204 is erected, as shown in fig. 11.
S205: the first underground utility tunnel 141 and the second underground utility tunnel 142 are constructed, and the utility interface 16 is reserved at the outlet of the second underground utility tunnel 142, as shown in fig. 12.
The preferred technical solution of this embodiment adopts the method of constructing the underground pedestrian passageway 11, the underground public transportation passageway 12 and the underground corridor passageway 13 by adopting the open cut forward construction method, and the first underground business passageway 141 and the second underground business passageway 142 by adopting the cover cut forward construction method, so that the main supporting settings of the underground pedestrian passageway 11, the underground public transportation passageway 12, the underground corridor passageway 13 and the like affecting the operation of the high-speed railway can be ensured to be synchronously put into operation with the high-speed railway station, and the guarantee is provided for the on-schedule put into operation of the supporting facilities of the high-speed railway station with a short construction period.
Example 2
This example describes the structure of the cross-deployed underground complex of the present invention in detail.
The cross-laid underground complex structure of this embodiment is built by the split construction method according to any one of the technical solutions of embodiment 1. Preferably, the underground utility structure of the cross arrangement of the embodiment comprises an underground pedestrian passageway 11, an underground public transportation passageway 12, an underground corridor passageway 13 and an underground commercial passageway, wherein the underground pedestrian passageway 11, the underground public transportation passageway 12 and the underground corridor passageway 13 are cross arranged; the underground business passageways include a first underground business passageway 141 and a second underground business passageway 142, the first underground business passageway 141 being located below the underground pedestrian passageway 11, the underground public transportation passageway 12, and the underground utility passageway 13, the second underground business passageway 142 being of a single-layer segment structure and communicating with the first underground business passageway 141, as shown in fig. 1. That is, the underground business channel is positioned at the negative two layers at the crossing section and is in an underground single-layer structure at the non-crossing section.
The underground comprehensive structure which is arranged in a crossing manner is built by adopting the split building method of any one of the technical schemes in the embodiment 1, so that the underground pedestrian passageway, the underground public transportation passageway and the underground corridor passageway of the underground comprehensive structure which are arranged in the crossing manner can be synchronously put into operation with the high-speed railway station. That is, the underground comprehensive structure which is arranged in a crossing manner solves the technical problem that the underground comprehensive structure which is arranged in a crossing manner in the prior art is constructed by adopting an open excavation method, and the underground pedestrian passageway, the underground public transportation passageway, the underground corridor passageway and the high-speed railway station cannot be ensured to be opened and operated synchronously.
In addition, the underground complex structure of the cross arrangement of the embodiment has the following advantages: (1) underground space resources can be utilized intensively; (2) The method is convenient for passengers to enter the station and enter the peripheral matched commercial facilities, so that a high-speed railway station, a station front square, a pedestrian passageway, a bus passageway, the peripheral commercial facilities and the like are formed into an interconnection and intercommunication underground hub, and great convenience is provided for passengers to enter the station, leave the station, relax, shop and the like.
According to a preferred embodiment, the height of the second subterranean business channel 142 satisfies: h1 is less than or equal to H2 and less than or equal to H0+H2, wherein H0 is the height of an underground pedestrian passageway 11, or the height of an underground bus passageway 12, or the height of an underground corridor passageway 13; h1 is the height of the first underground utility tunnel 141; h2 is the height of the second subterranean business channel 142. In this embodiment, the second underground business channel 142 is of a single-layer structure, which has a high height, so as to avoid the sense of depression caused by the underground complex structure being located underground, thereby improving the user experience.
According to a preferred embodiment, the cross-over arrangement of utility structures further includes a utility interface 15, as shown in FIG. 1. Preferably, the underground vestibule interface 15 is disposed at an outlet of the underground vestibule channel 13, and the underground vestibule interface 15 is used for communicating with a high-speed railway station or a station-front square. The utility model structure with the cross arrangement of the preferred technical scheme of the embodiment further comprises an underground corridor interface 15, the utility model structure can be communicated with a high-speed railway station or a station square through the underground corridor interface 15, passengers can enter the underground corridor channel 13 through the underground pedestrian channel 11 or the first underground business channel 141, and then enter the high-speed railway station or the station square through the underground corridor channel 13, so that great convenience is provided for the passengers.
According to a preferred embodiment, the cross-over arranged subsurface complex structure further includes a business interface 16, as shown in FIG. 1. Preferably, the business interface 16 is disposed at the outlet of the second subterranean business channel 142, the business interface 16 being for communication with a business district. The underground complex structure of the preferred embodiment of the cross arrangement further comprises a business interface 16, and the underground complex structure can be communicated with a business area near a station through the business interface 16, so that passengers can enter the second underground business channel 142 from the underground pedestrian passageway 11 or the first underground business channel 141, and then enter the business area from the second underground business channel 142, thereby providing great convenience for the passengers.
According to a preferred embodiment, the cross-laid subsurface complex structure further comprises a overburden 17 and a ground road 18, as shown in fig. 1. Preferably, the earth covering 17 covers the pedestrian passageway 11, the bus passageway 12, the gallery passageway 13, and the second gallery passageway 142, and the ground road 18 is located above the earth covering 17. According to the preferred technical scheme of the embodiment, through the soil covering layer 17, the upper part of the second underground business channel 142 is level with the upper parts of the underground pedestrian channel 11, the underground public transportation channel 12 and the underground corridor channel 13, then the ground road 18 is built on the soil covering layer 17, the ground road 18 can be kept in normal use, and the problem that the normal use of a ground road section is influenced due to the construction of an underground comprehensive structure is avoided.
According to a preferred embodiment, the underground pedestrian passageway 11, the underground bus passageway 12, and the underground utility passageway 13 include a first enclosure 101, a steel pipe column 102, a first steel support structure 105, a middle plate 106, side walls 107, and a roof 108, as shown in fig. 2-7. Preferably, the first enclosure 101 is located at the edges of the areas of the underground pedestrian passageway 11, the underground public transportation passageway 12, and the underground corridor passageway 13 to be constructed and built, as shown in fig. 2; the steel pipe column 102 is positioned in the area surrounded by the first enclosing structure 101, the steel pipe column 102 is fixed on the bearing pile 103, and the steel pipe column 102 is sleeved with the steel casing 104, as shown in fig. 3; the first steel support structure 105 is disposed at the top of the steel pipe column 102, as shown in fig. 4; the middle plate 106 is fixed at a preset position of the steel pipe column 102, the side wall 107 is arranged in parallel with the first enclosure 101 and/or the steel pipe column 102, and the top plate 108 is fixed at the top end of the first enclosure 101 and/or the steel pipe column 102, as shown in fig. 5 to 7. More preferably, the first enclosure 101 is a bored pile with a diameter of 1000 mm; the steel pipe column 102 is a steel pipe with a diameter of 800mm and a wall thickness of 16 mm; the load bearing pile 103 is a bored pile with a diameter of 1200 mm. According to the preferred technical scheme of the embodiment, the underground pedestrian passageway 11, the underground public transportation passageway 12 and the underground corridor passageway 13 comprise a first enclosure structure 101, a steel pipe column 102, a first steel supporting structure 105, a middle plate 106, side walls 107 and a top plate 108, so that the underground pedestrian passageway 11, the underground public transportation passageway 12 and the underground corridor passageway 13 can be conveniently constructed by adopting open-cut forward construction, and the constructed underground pedestrian passageway 11, underground public transportation passageway 12 and underground corridor passageway 13 are stable in structure and high in safety and reliability.
According to a preferred embodiment, first subterranean business channel 141 and second subterranean business channel 142 include a second enclosure 201, a second steel support structure 202, a third steel support structure 203, and a fourth steel support structure 204, as shown in fig. 8-12. Preferably, the second enclosure 201 is located at the edge of the second subterranean business channel 142 area to be constructed, as shown in fig. 8; a second steel support structure 202 is disposed at the crown floor location and the second steel support structure 202 is located within a second subterranean business channel 142 to be constructed and built, as shown in fig. 9; third steel support structure 203 is disposed below second steel support structure 202 at intervals, and third steel support structure 203 is located within second underground business passageway 142 to be constructed and built, as shown in fig. 10; fourth steel support structures 204 are disposed below third steel support structures 203 at intervals, and fourth steel support structures 204 are located within first underground business channel 141 and second underground business channel 142 to be constructed and built, as shown in fig. 11. In the preferred embodiment, the first underground business channel 141 and the second underground business channel 142 include the second enclosure structure 201, the second steel support structure 202, the third steel support structure 203 and the fourth steel support structure 204, which not only can facilitate the construction of the first underground business channel 141 and the second underground business channel 142 by adopting the cover-over-the-dig method, but also can ensure that the constructed first underground business channel 141 and second underground business channel 142 have stable structures and high safety and reliability.
In the description of the present invention, it is to be noted that, unless otherwise indicated, the meaning of "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention can be understood as appropriate by those of ordinary skill in the art.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (5)
1. A split construction method of a cross-arranged underground comprehensive structure is characterized in that an underground pedestrian passageway (11), an underground public transportation passageway (12) and an underground corridor passageway (13) are constructed by adopting open cut forward construction, after the underground pedestrian passageway (11), the underground public transportation passageway (12) and the underground corridor passageway (13) are constructed and put into operation, a first underground commercial passageway (141) positioned below the underground pedestrian passageway (11), the underground public transportation passageway (12) and the underground corridor passageway (13) and a single-layer section second underground commercial passageway (142) communicated with the first underground commercial passageway (141) are constructed by adopting cover cut forward construction at the same time,
The construction of the underground pedestrian passageway (11), the underground bus passageway (12) and the underground corridor passageway (13) by adopting open cut forward construction comprises the following steps:
Constructing a first enclosure structure (101): the first enclosure structure (101) adopts a bored pile with the diameter of 1000mm, and the first enclosure structure (101) is arranged in a preset embedding depth;
Constructing a bearing pile (103) of the steel pipe column (102), and hoisting the steel pipe column (102): the bearing pile (103) adopts a bored pile with the diameter of 1200mm, a steel pile casing (104) is adopted for supporting in the range of the steel pipe column (102), the steel pipe column (102) is constructed in the steel pile casing (104), and fine sand is backfilled;
Digging downwards from the ground to the position of a top plate (108) of the underground complex structure, constructing a pile crown beam, and erecting a first steel support structure (105);
continuing to excavate the foundation pit downwards to the position of the middle plate (106);
Constructing a middle plate (106) and side walls (107), finishing the structure pouring of the underground pedestrian passageway (11), the underground bus passageway (12) and the underground corridor passageway (13), reserving an underground corridor interface (15) at the outlet of the underground corridor passageway (13), and constructing a top plate (108);
removing the pile top support, recovering the road surface,
The construction of the first underground utility tunnel (141) and the second underground utility tunnel (142) using a top-down construction includes the steps of:
-a second enclosure (201) for the second underground utility tunnel (142);
excavating a foundation pit of the second underground business channel (142) to the bottom surface of the crown beam, and erecting a second steel support structure (202);
excavating a foundation pit of the second underground business channel (142) to a preset position, and erecting a third steel support structure (203);
Excavating residual earthwork of a foundation pit of a first underground business channel (141) and a foundation pit of a second underground business channel (142), and erecting a fourth steel support structure (204);
construction of the first underground utility tunnel (141) and the second underground utility tunnel (142) and reservation of a utility interface (16) at the outlet of the second underground utility tunnel (142).
2. A cross-laid underground complex structure constructed by the split construction method according to claim 1, comprising an underground pedestrian passageway (11), an underground bus passageway (12), an underground corridor passageway (13) and an underground commercial passageway, wherein,
The underground pedestrian passageway (11), the underground public transportation passageway (12) and the underground corridor passageway (13) are arranged in a crossing manner; the underground business channel comprises a first underground business channel (141) and a second underground business channel (142), wherein the first underground business channel (141) is positioned below the underground pedestrian channel (11), the underground public transportation channel (12) and the underground corridor channel (13), and the second underground business channel (142) is of a single-layer section structure and is communicated with the first underground business channel (141);
The underground comprehensive structure further comprises an earth covering layer (17) and a ground road (18), wherein the earth covering layer (17) covers the underground pedestrian passageway (11), the underground bus passageway (12), the underground corridor passageway (13) and the second underground business passageway (142), and the ground road (18) is positioned above the earth covering layer (17);
The underground pedestrian passageway (11), the underground public transportation passageway (12) and the underground corridor passageway (13) comprise a first enclosure structure (101), a steel pipe column (102), a first steel supporting structure (105), a middle plate (106), side walls (107) and a top plate (108), wherein,
The first enclosure structure (101) is positioned at the edges of the areas of the underground pedestrian passageway (11), the underground public transportation passageway (12) and the underground corridor passageway (13) to be constructed and built;
the steel pipe column (102) is positioned in the area surrounded by the first enclosing structure (101), the steel pipe column (102) is fixed on the bearing pile (103), and the steel pipe column (102) is sleeved with the steel casing (104);
The first steel support structure (105) is arranged at the top position of the steel pipe column (102);
The middle plate (106) is fixed at a preset position of the steel pipe column (102), the side wall (107) is arranged in parallel with the first enclosure structure (101) and/or the steel pipe column (102), and the top plate (108) is fixed at the top end of the first enclosure structure (101) and/or the steel pipe column (102); and
The first enclosure structure (101) is a bored pile with the diameter of 1000 mm; the steel pipe column (102) is a steel pipe with the diameter of 800mm and the wall thickness of 16 mm; the bearing pile (103) is a bored pile with the diameter of 1200 mm;
the first underground utility tunnel (141) and the second underground utility tunnel (142) include a second enclosure (201), a second steel support structure (202), a third steel support structure (203), and a fourth steel support structure (204), wherein,
The second enclosure (201) is located at an edge of the second underground business channel (142) region to be constructed;
The second steel support structure (202) is arranged at the bottom surface of the crown beam, and the second steel support structure (202) is positioned in the second underground business channel (142) to be constructed and built;
The third steel support structure (203) is arranged below the second steel support structure (202) at intervals, and the third steel support structure (203) is positioned in the second underground business channel (142) to be constructed and built;
The fourth steel support structures (204) are arranged below the third steel support structures (203) at intervals, and the fourth steel support structures (204) are located in the first underground business channel (141) and the second underground business channel (142) to be constructed and built.
3. The cross-over arranged underground utility structure of claim 2, wherein the height of the second underground utility channel (142) satisfies: h1 is more than or equal to H2 and more than or equal to H0+H21, wherein,
H0 is the height of the underground pedestrian passageway (11), or the height of the underground bus passageway (12), or the height of the underground corridor passageway (13); h1 is the height of the first subterranean business channel (141); h2 is the height of the second subterranean business channel (142).
4. The cross-over utility structure of claim 2, further comprising an underground utility interface (15), and wherein the underground utility interface (15) is disposed at an outlet of the underground utility tunnel (13), the underground utility interface (15) being for communication with a high-speed rail station or a pre-station square.
5. The cross-over arranged underground utility structure of claim 2, further comprising a business interface (16), and wherein the business interface (16) is disposed at an outlet of the second underground utility tunnel (142), the business interface (16) being for communication with a business district.
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