CN114277843B - Underground passage structure and construction method - Google Patents
Underground passage structure and construction method Download PDFInfo
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- CN114277843B CN114277843B CN202210009622.5A CN202210009622A CN114277843B CN 114277843 B CN114277843 B CN 114277843B CN 202210009622 A CN202210009622 A CN 202210009622A CN 114277843 B CN114277843 B CN 114277843B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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- Y02A30/60—Planning or developing urban green infrastructure
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Abstract
The invention discloses an underground passage structure and a construction method, which solve the problems of large earthing load, large span at an intersection, narrow structure inner space, difficult connection with surrounding buildings and poor ventilation condition in the prior art, and have the beneficial effects of reducing the earthing load, reducing the span of a road intersection and increasing the structure inner space, and the concrete scheme is as follows: the utility model provides an underground passage structure, includes the first underground road that forms through frame construction, first pipeline passageway and first ventilation channel are set up to first underground road top, and the roof of first underground road is as the bottom plate of first pipeline passageway and first ventilation channel, and first underground road has the import and export intersection, and import and export intersection department is in the island region setting up a plurality of supporting walls in the lane boundary, and the top of each supporting wall is connected with the roof of first underground road, and the bottom is connected with the bottom plate of first underground road.
Description
Technical Field
The invention relates to the technical field of construction engineering, in particular to an underground passage structure and a construction method.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
With the expansion of urban scale and the acceleration of urban process, the contradiction between urban development and limited construction space is more and more strong, wherein the reasonable utilization of underground space becomes an important way for solving the contradiction. Development of underground space is not only a development trend in the world today, but also an index for measuring urban modernization. The underground passage structure has the advantages of good earthquake resistance, relatively constant temperature and the like. Underground roads are an emerging underground structure, and are increasingly used in areas with dense buildings, large traffic and more underground pipelines, such as urban core areas, central business areas and the like. The underground road generally adopts a reinforced concrete frame structure;
the inventor finds that the existing underground structure faces the technical problems of deep embedding, large earth covering load, large span at the intersection, narrow internal space of the structure, difficult connection with surrounding buildings, poor ventilation condition and the like.
Disclosure of Invention
Aiming at the defects of deep embedding, large earth covering load, large span at an intersection, narrow space in the structure, difficult connection with surrounding buildings and poor ventilation condition in the prior art, the invention aims to provide an underground passage structure and a construction method, which can solve the technical problems of large earth covering load of an underground road structure, large structural span at the intersection of the road, narrow space in the structure, difficult near-long-term combination, poor ventilation condition and the like to a certain extent.
In order to achieve the above object, the present invention is realized by the following technical scheme:
an underground passage structure comprises a first underground passage for traveling crane, wherein the first underground passage is formed by a frame structure, a first pipeline passage and a first ventilation passage are arranged above the first underground passage, and a top plate of the first underground passage is used as a bottom plate of the first pipeline passage and the first ventilation passage;
the underground passage structure further comprises a second underground passage connected with the first underground passage, the second underground passage is also used for driving, second pipeline passages and/or second ventilation passages are arranged on two sides of the second underground passage, a plurality of underground spaces are arranged above the second underground passage, the second pipeline passages and the second ventilation passages, the second pipeline passages are communicated with the first pipeline passages, and the second ventilation passages are communicated with the first ventilation passages;
the underground passage is provided with an inlet and outlet intersection which is a first intersection, a plurality of supporting walls are arranged in a central island area within the lane side line at the first intersection, the top end of each supporting wall is connected with the top plate of the first intersection, and the bottom end of each supporting wall is connected with the bottom plate of the first intersection.
In the underground passage structure, a plurality of supporting walls form a circle of continuous closed wall body so as to ensure reliable support of the top plate of the entrance and exit intersection, and the inner side of the supporting wall is provided with a partition plate for management rooms or tool rooms and the like.
In order to enhance structural integrity and effectively transfer roof load, the underground passage structure is provided with support columns at the intersection positions of two adjacent support walls, wherein the support columns are connected with the support walls, and the support columns are connected with the support walls in a mode of hidden columns;
and a first hidden beam is arranged at the first intersection, one end of the first hidden beam is connected with the supporting wall, and the other end of the first hidden beam is connected with the side wall of the lane boundary of the entrance and exit intersection.
In the underground passage structure, in order to improve the supporting force of the top plate at the first intersection, the thickness of the top plate at the first intersection is larger than that of the top plate at the non-import-export intersection of the underground passage.
In the underground passage structure, the top plate of the first intersection is internally provided with a plurality of cavities so as to ensure the bearing capacity of the top plate of the underground passage and reduce the dead weight.
The garage intersections are second intersections between the first underground passage, the second underground passage and the underground space.
According to the underground passage structure, the second intersection is diamond-shaped, each end part of the second intersection is provided with an opening, the second intersection is internally provided with the upturned beams, the upturned beams are connected with the side walls of the two adjacent sides of the second intersection, second hidden beams are respectively arranged between the upturned beams and the two adjacent sides of the second intersection, and the second hidden Liang Tongshang upturned beams are vertical;
and a third dark beam is arranged in the maximum span direction of the second intersection, the third dark Liang Tongdi and the second dark beam are parallel, the two ends of the third dark beam are also provided with fourth dark beams, and the two ends of the fourth dark beam are fixedly connected with the road side wall of the second intersection respectively.
The underground passage structure is characterized in that the upright post used for supporting the upturning beam is further arranged in the second intersection, the bottom end of the upright post is supported by the bottom plate of the second intersection, the top end of the upright post is connected with the upturning beam, the upright post is stressed greatly, and the bottom plate is subjected to local reinforcement treatment so as to meet the requirement of impact resistance, cutting and checking calculation.
According to the underground passage structure, the temporary plug is arranged at the second intersection, and the temporary plug is connected with the second intersection in a form of a settlement joint;
the subsidence seam is recently provided with an external-attached waterproof coiled material and a back-attached rubber water stop, and the water stop is pre-embedded at the second intersection and wrapped for protection; and removing the temporary plug when the underground space structure is built, and burying the other end of the water stop into the later-stage cast-in-situ structure.
In a second aspect, the present invention also provides a construction method of an underground passage structure, including the following contents:
excavating soil body, and forming a first underground road through a frame structure;
the first underground road is provided with an entrance and exit intersection, and a supporting wall is constructed at the entrance and exit intersection to support a top plate of the first underground road;
constructing a first pipeline channel and a first ventilation channel above a first underground road;
backfilling two sides and the top of a first underground road, backfilling the two sides by using lime soil, and backfilling the top plate by using light concrete;
and the top parts of the first pipeline channel and the first ventilation channel are backfilled, and the backfilling is carried out by adopting a light material, so that backfilling loads on the top plates of the first pipeline channel and the first ventilation channel are effectively reduced.
The beneficial effects of the invention are as follows:
1) According to the invention, the first pipeline channel and the first ventilation channel are arranged above the first underground road, so that the thickness and load of the covering soil above the top of the underground channel are reduced; the roof of first underground road is as the bottom plate of first pipeline passageway and first ventilation passageway, make full use of first underground road's structure, and effectively shorten construction cycle.
2) According to the invention, the structural span of the first intersection is considered to be large, and the supporting wall is arranged at the first intersection, so that the top plate of the first intersection can be effectively supported by the supporting wall; and a plurality of supports form a continuous closed wall body, so that the reliable support of the top plate of the first intersection is fully ensured.
3) According to the invention, the plurality of cavities are formed in the top plate of the first intersection, so that the bearing capacity is ensured, and the dead weight is reduced.
4) According to the invention, through the arrangement of the second intersection, the communication with the underground space can be realized, the problem that vehicles in surrounding land parcels arrive is solved, and the parking resource sharing is realized;
5) According to the invention, the hidden beams are arranged at the first intersection and the second intersection, so that the stability of the structure arrangement at the first intersection is further ensured, the bearing capacity of the structure is enhanced, and meanwhile, the clearance requirement of the underground passage is met; the upper turning beam is arranged at the first intersection, so that the arrangement of part of the second hidden beam is ensured, the upper turning beam can meet the structural stress requirement, and the inner space of the underground passage is not occupied.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.
FIG. 1 is a top plan view of a first intersection according to the present invention;
FIG. 2 is a plan view of a second intersection of the present invention;
FIG. 3 is a cross-sectional view of a first subterranean passageway according to the present invention;
FIG. 4 is a cross-sectional view of a second subterranean passageway according to the present invention;
FIG. 5 is a bottom plan view of the garage intersection of the present invention;
FIG. 6 is a view of the recent waterproofing of a garage intersection of the present invention;
FIG. 7 is a long-term waterproof design of the garage intersection of the present invention;
FIG. 8 is a top plate cavity design of the present invention;
FIG. 9 is a vent design of the present invention;
in the figure: the mutual spacing or dimensions are exaggerated for the purpose of showing the positions of the various parts, and the schematic illustration is only schematic.
Wherein: 1. the air bubble mixing light soil, 2, planting soil, 3, 2:8 gray soil, 4, a first pipeline channel, 5, a first ventilation channel, 6, an underground business space, 7, a hidden beam, 8, an upturned beam, 9, an upright post, 10, a local thickening layer, 11, temporary plugging, 12, an externally attached waterproof coiled material, 13, a back attached rubber water stop, 14, an embedded steel edge water stop, 15, a white iron sheet, 16, a supporting wall, 17, a door opening, 18, an emergency article storage area, 19, a cleaning tool storage area, 20, a supporting column, 21, a roof cavity, 22 and a first underground channel.
Detailed Description
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present invention. As used herein, the singular forms also are intended to include the plural forms unless the present invention clearly dictates otherwise, and furthermore, it should be understood that when the terms "comprise" and/or "include" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;
as described in the background art, the underground structure in the prior art faces the problems of deep embedding, large earth covering load, large span at the intersection, narrow internal space of the structure, difficult connection with surrounding buildings and poor ventilation condition.
Example 1
In an exemplary embodiment of the present invention, referring to fig. 3, an underground passage structure includes a first underground passage 22 formed by a frame structure, a first pipeline passage 4 and a first ventilation passage 5 are provided above the first underground passage 22, and a top plate of the first underground passage serves as a bottom plate of the first pipeline passage 4 and the first ventilation passage 5;
specifically, the first pipeline channel 4 is used for arranging an underground pipeline, the first ventilation channel 5 is used for ventilating the underground pipeline, the net size of the first pipeline channel 4 in the embodiment is 3x3.6m, the net size of the first ventilation channel 5 is 4.7x3.6m, the thickness of the side wall of the channel is 40cm, and the thickness of the top plate is 45cm;
referring to fig. 1 and 8, the first underground passage has a first intersection, which is a three-way entrance intersection for vehicles to travel, the intersection has a large structural span due to the turning radius of a main line and entrance ramps, a plurality of support walls 16 are arranged in a central island area of the first intersection within a lane boundary, the top ends of the support walls 16 are connected with the top plate of the first underground passage and share the same top plate with the first underground passage, the bottom ends of the support walls are connected with the bottom plate of the first underground passage, a plurality of support walls 16 form a circle of continuous closed wall bodies so as to ensure reliable support of the top plate of the first underground passage, and the inner sides of the support walls can be provided with partition plates to form independent partitions for use as management rooms or tool rooms.
Specifically, the door opening 17 can be additionally arranged on the supporting wall to serve as an emergency article storage area 18 and a cleaning tool storage area 19 of the underground road.
It will be appreciated that in order to solve the problem of large intersection span, the thickness of the roof within the range of the first intersection needs to be increased appropriately, from 1.0m to 1.5m in the standard section, and after the thickness of the roof is increased, a plurality of roof cavities 21 are provided inside the roof of the first intersection, so as to reduce the dead weight while ensuring the bearing capacity of the first underground road.
In some examples, a cylindrical cavity 21 with a diameter of 0.9m may be provided in the top plate, a clear space of 0.4m, a top and bottom thickness of 0.3m at the cavity location, and 22 circular cavities in the larger span region.
Referring to fig. 1, in order to enhance structural integrity and effectively transfer roof load, a support column 20 is arranged at the intersection position of two adjacent support walls, the support column 20 is connected with the support wall 16, a dark beam 7 is arranged at a position with larger span at the intersection position of an inlet and an outlet, the dark beam 7 comprises a first dark beam, a second dark beam, a third dark beam and a fourth dark beam according to different support positions, one end of the first dark beam is connected with the support wall 16, the other end of the first dark beam is connected with the side wall of the lane boundary line of the first intersection, and meanwhile, the first dark beam is also arranged at the first intersection and is connected with the side walls of the lane boundary lines at two sides; the thickness of the top plate at the first intersection is larger than that of the top plate at the non-entrance-exit intersection of the underground passage, so that the top plate supporting force at the entrance-exit intersection is improved.
In some examples, the support posts have a polygonal cross-section, with a cross-sectional area of about 5.9m 2 The position of the support column is set by a longitudinal main reinforcement and a stirrup.
Referring to fig. 2 and 4, the underground passage structure further includes a second underground road connected to the first underground passage, wherein a second pipeline passage and/or a second ventilation passage are provided at both sides of the second underground road, and have the same function as the second pipeline passage and/or the second ventilation passage, a plurality of underground spaces are provided above the second underground road, the second pipeline passage and the second ventilation passage, the second pipeline passage is communicated with the first pipeline passage, and the second ventilation passage is communicated with the first ventilation passage;
a garage intersection is arranged between the first underground road, the second underground road and the underground space, and particularly a garage intersection formed by connecting an underground road main line with an underground parking lot of a surrounding land block.
It will be appreciated that both the first and second subterranean roadways are for driving, except that the pipeline and ventilation channels around the two are provided differently.
The garage intersection is diamond-shaped, each end of the garage intersection is provided with an opening, an upturning beam 8 is arranged in the garage intersection according to the calculated force transmission path, the upturning beam 8 is used as a main stress member of the garage intersection, the beam height is 4.0m, the beam width is 1.6m, the upturning beam is connected with road side walls on two adjacent sides of the garage intersection, second hidden beams are respectively arranged between the upturning beams and between two adjacent sides of the garage intersection, and the second hidden Liang Tongshang turning beams are vertical;
a third hidden beam is arranged in the maximum span direction of the garage intersection, the third hidden beam Liang Tongdi and the second hidden beam are parallel, and the two ends of the third hidden beam are also provided with a fourth hidden beam, and the two ends of the fourth hidden beam are respectively fixedly connected with the road side wall of the garage intersection; in this embodiment, the third dark beam has the largest span and the longest length, and is also vertically disposed with the upturned beam, and the dark beam has a width of 1.0m, and the beam height is 1.0m consistent with the thickness of the top plate.
Referring to fig. 4, according to the overall plan of the underground space in the area, facilities such as an underground business space 6, an underground pedestrian passageway and the like are arranged above the second underground road, and are constructed in combination with the underground road, the pipeline passageway and the ventilation passageway structure, the underground business building is arranged above the underground road, the building net height is 4.5m, and the column network arrangement is adjusted according to the positions of the side walls of the underground road and the columns.
Referring to fig. 2 and 5, the garage intersection is further internally provided with a stand column 9 for supporting the upturning beam, the bottom end of the stand column 9 is supported by a bottom plate of the garage intersection, the top end of the stand column is connected with the upturning beam 8, the stand column is vertically arranged with the third hidden beam, the stability of the third hidden beam with the maximum span is effectively guaranteed, the stand column is used as a middle pivot of the upturning beam of a main stress member, bearing load is large, the bottom plate is obviously subjected to punching action of the stand column, the bottom plate is locally reinforced, and a local thickening layer 10 is arranged to meet the requirement of impact-resistant cutting checking calculation.
In some examples, the upright 9 is a reinforced concrete member with a radius of 1.0m, the thickness of the local thickened part of the bottom plate is 2.0m, the arrangement range is within 3m on both sides of the center of the upright, and the thickened section and the standard section are provided with 1m long transition sections.
Referring to fig. 3, in order to reduce the dead weight of the covering soil, backfilling is carried out at the top of the intersection structure by adopting bubble mixed light soil 1, and planting soil 2 with the thickness of 80cm and 2:8 gray soil 3 with the thickness of 40cm are paved from top to bottom between the top of the bubble mixed light soil and the design ground, and are compacted in layers.
Referring to fig. 6-7, the second intersection is connected with the surrounding land block garage, under the influence of the development time sequence of the land block, part of the underground garage is not yet constructed, in order to ensure the normal operation of the underground road, a reinforced concrete temporary plugging 11 is arranged at the end part of the intersection in recent time, the temporary plugging is connected with the garage intersection in a form of a settlement joint, the surrounding land block is removed when being constructed, and a waterproof roll and a water stop belt are adopted at the settlement joint.
The subsidence seam of the embodiment adopts an external-attached waterproof coiled material 12 and a back-attached rubber water stop 13 recently, a steel edge water stop 14 is embedded in a garage intersection, and a white iron sheet 15 is adopted for wrapping and protecting; and removing the temporary plugging when the underground garage structure is constructed, and burying the other end of the steel edge water stop 14 into the later-stage cast-in-situ structure.
Referring to fig. 9, the air passage of the underground road adopts a mode of combining natural ventilation and mechanical ventilation, and adopts a mechanical ventilation part, wherein the air passage is built together with surrounding buildings and shares a fan with the buildings. A reinforced concrete cast-in-situ structure is selected for the natural ventilation smoke outlet;
the net size of the air duct of the embodiment is 1.5x1.5m, the thickness of the side wall is 30cm, the structure is 1.0m higher than the ground, and the air duct is arranged in a green belt.
Example two
The embodiment also provides a construction method of the underground passage structure, which comprises the following steps:
firstly, excavating soil body, and forming a first underground road through a frame structure;
the first underground road is provided with an entrance and exit intersection, a supporting wall is constructed at the entrance and exit intersection to support the top plate of the first underground road, the supporting wall is continuously closed to form independent partitions, and the door opening 17 is additionally arranged to serve as an emergency object storage area 18 and a cleaning tool storage area 19 of the underground road.
Constructing a first pipeline channel and a first ventilation channel above a first underground road, backfilling the periphery and the top of the first underground road, backfilling the two sides with lime soil, backfilling the top plate with light concrete, and compacting the top plate in layers;
the top of the first pipeline channel and the top of the first ventilation channel are backfilled, and the backfilling is carried out by adopting a light material, so that backfilling load on the top plates of the first pipeline channel and the first ventilation channel is effectively reduced, the communication with an underground space is realized, the problem that vehicles of surrounding land parcels arrive is solved, and parking resource sharing is realized.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. An underground passage structure is characterized by comprising a first underground passage for driving, wherein the first underground passage is formed by a frame structure, a first pipeline passage and a first ventilation passage are arranged above the first underground passage, and a top plate of the first underground passage is used as a bottom plate of the first pipeline passage and the first ventilation passage;
the first underground road is provided with an inlet and outlet intersection, a plurality of supporting walls are arranged in a central island area within the lane boundary at the inlet and outlet intersection, the top end of each supporting wall is connected with the top plate of the first underground road, and the bottom end of each supporting wall is connected with the bottom plate of the first underground road;
the support walls form a circle of continuous closed wall body;
the system also comprises a second underground road connected with the first underground road, wherein second pipeline channels and/or second ventilation channels are arranged on two sides of the second underground road, a plurality of underground spaces are arranged above the second underground road, the second pipeline channels and the second ventilation channels, the second pipeline channels are communicated with the first pipeline channels, and the second ventilation channels are communicated with the first ventilation channels;
a garage intersection is arranged between the first underground road, the second underground road and the underground space;
the garage intersection is diamond-shaped, each end part of the garage intersection is provided with an opening, an upward turning beam is arranged in the garage intersection, the upward turning beam is connected with side walls on two adjacent sides of the garage intersection, second hidden beams are respectively arranged between the upward turning beams and between two adjacent sides of the garage intersection, and the second hidden Liang Tongshang turning beams are vertical;
the garage intersection is internally provided with an upright post for supporting the upturning beam, the bottom end of the upright post is supported by a bottom plate of the garage intersection, the bottom plate is provided with local reinforcement, and the top end of the upright post is connected with the upturning beam;
a third hidden beam is arranged in the maximum span direction of the garage intersection, the third hidden beam Liang Tongdi and the second hidden beam are parallel, and the two ends of the third hidden beam are also provided with a fourth hidden beam, and the two ends of the fourth hidden beam are respectively fixedly connected with the road side wall of the garage intersection;
the upright post used for supporting the upturning beam is further arranged in the garage intersection, the bottom end of the upright post is supported through the bottom plate of the garage intersection, the top end of the upright post is connected with the upturning beam, the upright post is perpendicular to the third hidden beam, and the stability of the third hidden beam with the maximum span is effectively guaranteed.
2. An underground passage structure according to claim 1, wherein,
the inner side of the supporting wall is provided with a partition plate.
3. The underground passage structure according to claim 2, wherein a support column is provided at the intersection of two adjacent support walls, the support column being connected to the support walls;
and a first hidden beam is arranged at the intersection of the inlet and the outlet, one end of the first hidden beam is connected with the supporting wall, and the other end of the first hidden beam is connected with the side wall of the lane boundary of the intersection of the inlet and the outlet.
4. The underground passage structure of claim 1, wherein the thickness of the roof at the entrance/exit intersection is greater than the thickness of the roof at the non-entrance/exit intersection of the first underground roadway.
5. The underground passage structure of claim 1, wherein the top plate of the entrance/exit intersection has cavities therein to reduce the dead weight while maintaining the load-bearing capacity of the first underground road.
6. The underground passage structure according to claim 1, wherein temporary plugs are arranged at the intersections of the garage, and the temporary plugs are connected with the intersections of the garage in the form of settlement joints.
7. The construction method of an underground passage structure according to any one of claims 1 to 6, comprising the following:
excavating soil body, and forming a first underground road through a frame structure;
the first underground road is provided with an entrance and exit intersection, and a supporting wall is constructed at the entrance and exit intersection to support a top plate of the first underground road;
constructing a first pipeline channel and a first ventilation channel above a first underground road;
backfilling two sides and the top of the first underground road;
and backfilling the tops of the first pipeline channel and the first ventilation channel, wherein the backfilling is performed by adopting a light material.
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| CN202210009622.5A CN114277843B (en) | 2022-01-05 | 2022-01-05 | Underground passage structure and construction method |
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| CN202210009622.5A CN114277843B (en) | 2022-01-05 | 2022-01-05 | Underground passage structure and construction method |
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| CN114277843B true CN114277843B (en) | 2023-09-05 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114808577B (en) * | 2022-05-09 | 2023-05-09 | 杭州金溢建设集团有限公司 | Building riding expansion method and equipment for adjacent building and limited road width |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1333411A (en) * | 2001-07-13 | 2002-01-30 | 武汉大学 | Natural lighting and ventilation underground car pass way |
| CN202181488U (en) * | 2011-04-08 | 2012-04-04 | 安维民 | Urban intelligent digital nervous traffic system |
| CN103147771A (en) * | 2013-03-24 | 2013-06-12 | 中铁二院工程集团有限责任公司 | Long-span high-backfill open cut tunnel structure |
| CN205894100U (en) * | 2016-06-29 | 2017-01-18 | 中冶长天国际工程有限责任公司 | Underground transfer passage |
| CN110042865A (en) * | 2019-05-22 | 2019-07-23 | 河南省交通规划设计研究院股份有限公司 | Box top board structure for large span city tunnel |
-
2022
- 2022-01-05 CN CN202210009622.5A patent/CN114277843B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1333411A (en) * | 2001-07-13 | 2002-01-30 | 武汉大学 | Natural lighting and ventilation underground car pass way |
| CN202181488U (en) * | 2011-04-08 | 2012-04-04 | 安维民 | Urban intelligent digital nervous traffic system |
| CN103147771A (en) * | 2013-03-24 | 2013-06-12 | 中铁二院工程集团有限责任公司 | Long-span high-backfill open cut tunnel structure |
| CN205894100U (en) * | 2016-06-29 | 2017-01-18 | 中冶长天国际工程有限责任公司 | Underground transfer passage |
| CN110042865A (en) * | 2019-05-22 | 2019-07-23 | 河南省交通规划设计研究院股份有限公司 | Box top board structure for large span city tunnel |
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