CN117627044A - Construction method of arc-shaped top plate of large-span non-column arc-shaped subway station in hard rock stratum - Google Patents
Construction method of arc-shaped top plate of large-span non-column arc-shaped subway station in hard rock stratum Download PDFInfo
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- CN117627044A CN117627044A CN202410103388.1A CN202410103388A CN117627044A CN 117627044 A CN117627044 A CN 117627044A CN 202410103388 A CN202410103388 A CN 202410103388A CN 117627044 A CN117627044 A CN 117627044A
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- 238000010276 construction Methods 0.000 title claims abstract description 17
- 239000011435 rock Substances 0.000 title claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 125
- 239000010959 steel Substances 0.000 claims abstract description 125
- 239000002023 wood Substances 0.000 claims abstract description 18
- 230000002787 reinforcement Effects 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 5
- 238000004804 winding Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000009415 formwork Methods 0.000 description 7
- 238000005266 casting Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011800 void material Substances 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
- E02D29/04—Making large underground spaces, e.g. for underground plants, e.g. stations of underground railways; Construction or layout thereof
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
- E04G11/48—Supporting structures for shutterings or frames for floors or roofs
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- Sustainable Development (AREA)
- Environmental & Geological Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention belongs to the technical field of subway station construction, and discloses a construction method of an arc-shaped top plate of a large-span non-column arch subway station in a hard rock stratum, which comprises the following steps: arranging a vertical rod supporting system on the foundation pit, and erecting a plurality of arc-shaped I-steel main ribs on the vertical rod supporting system at intervals along the longitudinal direction; arranging a plurality of square timber at intervals along the cambered surface above each cambered I-steel main ridge; assembling and arranging arc-shaped wood templates above the square timber, wherein the two side edges of the whole arc-shaped wood templates are connected to the poured side walls at the two sides of the foundation pit; and arranging reinforcement cages in the arc-shaped wood templates, the side walls of the foundation pit and the enclosure spaces of the poured side walls, and then pouring concrete to form the arc-shaped top plate. The invention has the advantages that: the adjustable steel wedge can realize the close-fitting stable support of the arc-shaped I-steel main ridge; the primary inclined supporting plate and the secondary inclined supporting plate which are mutually hinged are used for adapting to the radian change of the arc-shaped I-steel main edge, so that as many supporting points with the arc-shaped I-steel main edge as possible are formed.
Description
Technical Field
The invention belongs to the technical field of subway station construction, and particularly relates to a construction method of an arc-shaped top plate of a large-span non-column arch subway station in a hard rock stratum.
Background
Rail transit tunnels and stations in various cities are more and more in the prior art, and various construction technologies are more and more mature. In recent years, demands of people on subway stations are not limited to the types of stations such as riding, transfer, diversion and commercial complexes, and the demands on space, appearance and comfort of the subway stations are increasingly prominent. The large-span non-column arc roof station has the advantages of stable structure, reasonable stress, high space utilization rate and attractive appearance, such as a Jinan subway No. 3 line Long Ao station, a Chengdu subway No. 6 line Jinfu station, an Shanghai subway No. 15 line Wuzhong road station, an Shanghai Hainan station, a Guangzhou subway No. two line city two palace station and the like, and all adopts a large-span non-column arc roof structure.
The design and the installation of the template supporting system of the arc-shaped top plate structure are important safety control points of the engineering. The cast-in-situ large-span arc-shaped roof structure has higher requirements on linearity, waterproof performance, surface appearance and the like, and the arc-shaped roof is difficult to receive. In the formwork erection process, the arc-shaped wood formwork cannot be effectively supported by the upright rods below, and along with the change of radian, the wood wedges or the steel wedges with fixed angles cannot be effectively adapted, so that a formwork structure capable of adapting to angle adjustment is urgently needed by those skilled in the art so as to adapt to the arc-shaped wood formwork support with the change of radian.
Disclosure of Invention
According to the defects of the prior art, the invention provides a construction method of an arc-shaped top plate of a large-span non-column subway station of a hard rock stratum, which comprises the steps of arranging a vertical rod supporting system, sequentially arranging an arc-shaped I-steel main ridge, square timber and an arc-shaped wood template from bottom to top under the support of the vertical rod supporting system to perform the casting of the arc-shaped top plate in a divided manner, and simultaneously, arranging an adjustable steel wedge between the arc-shaped I-steel main ridge and a top support, and realizing the support of the splicing seam of the arc-shaped I-steel main ridge by utilizing a primary inclined supporting plate and a secondary inclined supporting plate which are hinged with the adjustable steel wedge, so that the construction method not only can adapt to the angle change of the arc-shaped I-steel main ridge, but also can realize the close adhesion of the arc-shaped I-steel main ridge to the multi-point support of the arc-shaped I-steel main ridge, and ensure the strength of the splicing seam; and the bolts of the connecting piece are fastened and connected with the rotating shaft on the bottom plate through the steel wire cable, so that an integral structure is formed, and deflection or void in the construction process is avoided.
The invention is realized by the following technical scheme:
a construction method of an arc-shaped top plate of a large-span column-free arc-shaped subway station of a hard rock stratum comprises the following steps:
s1: laying a vertical rod supporting system on the foundation pit, and then erecting a plurality of arc I-steel main ribs on the vertical rod supporting system at intervals along the longitudinal direction;
s2: arranging a plurality of square timber at intervals along the cambered surface above each cambered I-steel main ridge, wherein the square timber is erected at least across two cambered I-steel main ridges;
s3: an arc-shaped wood template is assembled and arranged above the square timber, and the two side edges of the whole arc-shaped wood template are connected to the poured side walls at the two sides of the foundation pit;
s4: and arranging reinforcement cages in the arc-shaped wood templates, the side walls of the foundation pit and the enclosure spaces of the poured side walls, and then pouring concrete to form the arc-shaped top plate.
The vertical rod supporting system comprises a plurality of rows of vertical rods which are arranged at intervals, each row of vertical rods supports one arc-shaped I-steel main edge, and the top of each vertical rod supports the arc-shaped I-steel main edge.
The arc-shaped I-steel main rib is formed by splicing a plurality of arc-shaped I-steel sections, each arc-shaped I-steel section comprises a top arch section, a left arch waist section, a right arch waist section, a left arch foot section and a right arch foot section, and adjacent arc-shaped I-steel sections are fixedly connected through connecting pieces; the connecting piece comprises two connecting steel plates which are respectively arranged at two sides of a web plate of the arc-shaped I-shaped steel section and are arranged across the splicing seam, and the connecting steel plates at two sides are fastened through penetrating bolts; the connecting steel plate is fixedly connected with the top arch section through a first bolt, and is fixedly connected with the right arch section or the left arch section through a second bolt; the top of the vertical rod at the position where the connecting piece is arranged is provided with a jacking, and an adjustable steel wedge is arranged between the jacking and the arc-shaped I-steel main ridge.
The adjustable steel wedge is arranged at a joint between the top arch segment and the left arched waist segment and a joint between the top arch segment and the right arched waist segment;
the adjustable steel wedge comprises a bottom plate, an inclined supporting plate, a first supporting plate and a second supporting plate, wherein the bottom plate is arranged on the jacking, the inclined supporting plate comprises a first-stage inclined supporting plate and a second-stage inclined supporting plate, the front end of the first-stage inclined supporting plate is hinged to the bottom plate, the front end of the second-stage inclined supporting plate is hinged to the rear end of the first-stage inclined supporting plate, a plurality of limiting convex teeth are respectively arranged on the lower surface of the first-stage inclined supporting plate and the lower surface of the second-stage inclined supporting plate, the first supporting plate is hinged to the front portion of the bottom plate and the upper end of the first-stage inclined supporting plate is connected to the corresponding limiting convex teeth so that the first-stage inclined supporting plate is connected to the main arc-shaped steel edge, and the second supporting plate is hinged to the rear portion of the bottom plate and the upper end of the second-stage inclined supporting plate is connected to the corresponding limiting convex teeth so that the second-stage inclined supporting plate is connected to the main arc-shaped steel edge.
The splice seam between the top arch segment and the right or left loin segment is supported by the secondary diagonal braces, and the primary diagonal braces support the right or left loin segment.
The first support plate is hinged with the bottom plate through a first rotating shaft, and the second support plate is hinged with the bottom plate through a second rotating shaft; the outer protruding end of the first rotating shaft and the outer protruding end of the second bolt are fixed in a tightening manner through a winding steel wire cable, and the outer protruding end of the second rotating shaft and the outer protruding end of the first bolt are fixed in a tightening manner through a winding steel wire cable.
The bottom surface rear end of bottom plate has seted up circular boss, set up on the jacking with circular boss assorted spacing recess, the bottom plate with between the roof through circular boss with spacing recess constitutes spacing assembly.
The method for pouring the arc-shaped top plate in a sectional manner comprises the following steps of: the arch foot parts on two sides of the arc-shaped top plate are poured for a plurality of times from bottom to top, and the pouring height of each pouring is not more than 500mm; after pouring of arch feet on two sides of the arc-shaped top plate is completed, pouring is carried out on the residual arch crown part of the arc-shaped top plate in a divided manner.
And during concrete pouring, two sides are symmetrically poured at the same time.
The invention has the advantages that:
the adjustable steel wedge can realize the close-fitting stable support of the arc-shaped I-steel main ridge; the primary inclined supporting plate and the secondary inclined supporting plate which are mutually hinged are used for adapting to the radian change of the arc-shaped I-steel main edge, so that as many supporting points with the arc-shaped I-steel main edge as possible are formed; the lateral limit support for the adjustable steel wedge can be formed by matching the circular boss with the limit groove; and the arrangement of the steel wire cable can connect the arc-shaped I-steel main ridge and the adjustable steel wedge into a whole, thereby ensuring that lateral movement can not occur and forming stable contact support.
Drawings
FIG. 1 is a schematic view of a portion of a formwork system of the present invention;
FIG. 2 is a schematic illustration of a portion of a formwork system with a tensioned wire cable according to the present invention;
FIG. 3 is a schematic illustration of a split casting of the arch springing portion of an arc roof of the present invention;
fig. 4 is a schematic illustration of a split casting of the remainder of an arcuate roof in accordance with the present invention.
Detailed Description
The features of the present invention and other related features are described in further detail below by way of example in conjunction with the following drawings, to facilitate understanding by those skilled in the art:
as shown in fig. 1-4, the labels in the figures are respectively: the novel steel plate comprises an arc-shaped wood formwork 1, square lumber 2, an arc-shaped I-shaped steel main rib 3, a top arch section 3a, a right arch waist section 3b, a connecting steel plate 4, bolts 5, a first bolt 5a, a second bolt 5b, an inclined support plate 6, a primary inclined support plate 6a, a secondary inclined support plate 6b, limiting convex teeth 6c, a first support plate 7, a second support plate 8, a bottom plate 9, a top support 10, a vertical rod 11, a second rotating shaft 12, a first rotating shaft 13, a first steel wire cable 14, a second steel wire cable 15, a poured side wall 16 and an arc-shaped top plate 17.
Examples: as shown in fig. 1, 2, 3 and 4, the embodiment specifically relates to a construction method of an arc-shaped top plate of a large-span non-column arc-shaped subway station in a hard rock stratum, which comprises the following steps:
(S1) erecting a vertical rod supporting system in a foundation pit, wherein the vertical rod supporting system comprises a plurality of rows of vertical rods 11 which are arranged at intervals, and in order to ensure the stability of the whole vertical rod supporting system, the adjacent vertical rods 11 are mutually connected through bracing beams to form a stable supporting system; a plurality of arc-shaped I-steel main ribs 3 are arranged above the upright support system at intervals in the longitudinal direction, and a row of upright 11 is correspondingly arranged below each arc-shaped I-steel main rib 3 for supporting.
Based on the limited space of construction site and the difficulty in integral hoisting transportation, the arc-shaped I-steel main beam 3 is formed by splicing a plurality of arc-shaped I-steel sections, each arc-shaped I-steel section comprises a top arch section 3a, a left arch waist section, a right arch waist section 3b, a left arch foot section and a right arch foot section, and the adjacent arc-shaped I-steel sections are fixedly connected through connecting pieces.
The height of the vertical rod 11 is correspondingly adjusted based on the radian change of the arc-shaped I-steel main ridge 3, so that the top of the vertical rod 11 can effectively prop the arc-shaped I-steel main ridge 3. In order to ensure that the splicing seam between the arc-shaped I-steel sections can be stably supported and effectively protected, a jacking 10 is arranged at the top of a vertical rod 11 at the splicing seam, an adjustable steel wedge is arranged between the jacking 10 and the arc-shaped I-steel main edge 3, and the jacking 10 is used as a supporting platform of the adjustable steel wedge to realize the close contact and stable support of the arc-shaped I-steel main edge 3 in an angle adjusting mode. Specifically, adjustable wedges are provided at the joints of the top arch segment 3a and the right waist segment 3b, and at the joints between the top arch segment 3a and the left waist segment.
The connecting piece comprises two connecting steel plates 4, wherein the connecting steel plates 4 are respectively arranged on two sides of a web plate of the arc-shaped I-steel section and are arranged across a splicing seam, and the connecting steel plates 4 on two sides are fastened through penetrating bolts 5, so that the two arc-shaped I-steel sections are spliced. Wherein, wear to be equipped with first bolt 5a between connection steel sheet 4 and the top arch section 3a and realize fastening connection, wear to be equipped with second bolt 5b between connection steel sheet 4 and right arch waist section 3b or the left arch waist section and realize fastening connection, be first bolt 5a or second bolt 5b, its both ends outwards protrusion to follow-up connection of being convenient for.
The adjustable steel wedge comprises a bottom plate 9, an inclined supporting plate 6, a first supporting plate 7 and a second supporting plate 8, wherein the bottom plate 9 is arranged on a jacking 10, the inclined supporting plate 6 comprises a first-stage inclined supporting plate 6a and a second-stage inclined supporting plate 6b, the front end of the first-stage inclined supporting plate 6a is hinged with the front end of the bottom plate 9, the front end of the second-stage inclined supporting plate 6b is hinged with the rear end of the first-stage inclined supporting plate 6a, a plurality of limiting convex teeth 6c are respectively arranged on the lower surface of the first-stage inclined supporting plate 6a and the lower surface of the second-stage inclined supporting plate 6b, the first supporting plate 7 is hinged to the front portion of the bottom plate 9, the upper end of the first supporting plate is connected onto the corresponding limiting convex teeth 6c of the first-stage inclined supporting plate 6a in a clamping mode, the second supporting plate 8 is hinged to the rear portion of the bottom plate 9, the upper end of the second supporting plate is connected onto the corresponding limiting convex teeth 6c of the second-stage inclined supporting plate 6b in a clamping mode, and the second-stage inclined supporting plate 6b is connected onto the corresponding limiting convex teeth 6c in a clamping mode, so that the second-stage inclined supporting plate 6b is connected onto the corresponding limiting convex teeth 6c in a clamping mode, and the upper end of the supporting plate is connected with the corresponding limiting convex steel plate 6c in a clamping mode.
It should be noted that, when the adjustable steel wedge is arranged, the bottom plate 9 is propped against the arc-shaped i-steel main ridge 3 to form a supporting point. The first-stage inclined pallet 6a supports the right loin section 3b, and the second-stage inclined pallet 6b supports the seam between the top arch section 3a and the right loin section 3b and both sides thereof. The primary inclined supporting plate 6a and the secondary inclined supporting plate 6b which are mutually hinged can adapt to the radian change of the arc-shaped I-steel main edge 3, and the supporting point positions are increased, so that the stable support for the arc-shaped I-steel main edge 3 is formed.
As shown in fig. 1 and 2, in order to prevent the adjustable steel wedge from sliding laterally or not being able to effectively support the main ridge 3 of the arc-shaped i-steel, a circular boss protruding downwards is arranged at the bottom of the bottom plate 9, and meanwhile, a limit groove matched with the circular boss is formed on the jacking 10, and when the adjustable steel wedge is installed, the circular boss on the bottom plate 9 and the limit groove on the jacking 10 can be assembled, so that the adjustable steel wedge can be prevented from sliding laterally. Meanwhile, a second steel wire cable 15 and a first steel wire cable 14 for connection are arranged between the adjustable steel wedge and the arc-shaped I-steel main rib 3, the first steel wire cable 14 for connection is wound between the protruding end part of the first bolt 5a and the protruding end part of the second rotating shaft 12, the number of the first steel wire cables 14 is two groups and symmetrically arranged, the second steel wire cable 15 for connection is wound between the end part of the second bolt 5b and the end part of the first rotating shaft 13, the number of the second steel wire cables 15 is two groups and symmetrically arranged, and the tight connection between the adjustable steel wedge and the arc-shaped I-steel main rib 3 can be realized through the arrangement of the first steel wire cable 14 and the second steel wire cable 15, so that the adjustable steel wedge is prevented from being displaced.
(S2) arranging a plurality of square timber 2 above each arc-shaped I-steel main ridge 3 at intervals along the arc surface, erecting the square timber 2 longitudinally at least across two arc-shaped I-steel main ridges 3 so as to support the square timber by the arc-shaped I-steel main ridges 3, wherein the size of the square timber 2 is 10cm multiplied by 10 cm.
And (S3) splicing and arranging arc-shaped wood templates 1 above the square wood 2, wherein the two side edges of the whole arc-shaped wood templates 1 are connected to the poured side walls 16 on the two sides of the foundation pit.
(S4) arranging reinforcement cages in the arc-shaped wood templates 1, the side walls of the foundation pit and the enclosure spaces where the side walls 16 are poured, and then pouring concrete to form an arc-shaped top plate 17. The method for casting the arc-shaped top plate 17 in a sectional manner comprises the following steps: the arch foot parts on two sides of the arc-shaped top plate 17 are poured for a plurality of times from bottom to top, and the pouring height of each pouring is not more than 500mm; after pouring of arch feet on two sides of the arc-shaped top plate 17 is completed, pouring is carried out on the residual arch crown part of the arc-shaped top plate 17 in a divided mode, and it is required to be noted that when concrete is poured, two sides are symmetrically poured at the same time.
The invention has the advantages that:
the adjustable steel wedge can realize the close-fitting stable support of the arc-shaped I-steel main ridge; the primary inclined supporting plate and the secondary inclined supporting plate which are mutually hinged are used for adapting to the radian change of the arc-shaped I-steel main edge, so that as many supporting points with the arc-shaped I-steel main edge as possible are formed; the lateral limit support for the adjustable steel wedge can be formed by matching the circular boss with the limit groove; and the arrangement of the steel wire cable can connect the arc-shaped I-steel main ridge and the adjustable steel wedge into a whole, thereby ensuring that lateral movement can not occur and forming stable contact support.
Claims (4)
1. The construction method of the arc-shaped top plate of the large-span column-free arc-shaped subway station of the hard rock stratum is characterized by comprising the following steps of:
s1: laying a vertical rod supporting system on the foundation pit, and then erecting a plurality of arc I-steel main ribs on the vertical rod supporting system at intervals along the longitudinal direction; the upright rod supporting system comprises a plurality of rows of upright rods which are arranged at intervals, each row of upright rods supports one arc-shaped I-steel main rib, and the top of each upright rod supports the arc-shaped I-steel main rib; the arc-shaped I-steel main rib is formed by splicing a plurality of arc-shaped I-steel sections, each arc-shaped I-steel section comprises a top arch section, a left arch waist section, a right arch waist section, a left arch foot section and a right arch foot section, and adjacent arc-shaped I-steel sections are fixedly connected through connecting pieces; the connecting piece comprises two connecting steel plates which are respectively arranged at two sides of a web plate of the arc-shaped I-shaped steel section and are arranged across the splicing seam, and the connecting steel plates at two sides are fastened through penetrating bolts; the connecting steel plate is fixedly connected with the top arch section through a first bolt, and is fixedly connected with the right arch section or the left arch section through a second bolt; a jacking is arranged at the top of the vertical rod at the position where the connecting piece is arranged, and an adjustable steel wedge is arranged between the jacking and the arc-shaped I-steel main ridge;
the adjustable steel wedge is arranged at a joint between the top arch segment and the left arched waist segment and a joint between the top arch segment and the right arched waist segment;
the adjustable steel wedge comprises a bottom plate, an inclined supporting plate, a first supporting plate and a second supporting plate, wherein the bottom plate is arranged on the jacking, the inclined supporting plate comprises a first-stage inclined supporting plate and a second-stage inclined supporting plate, the front end of the first-stage inclined supporting plate is hinged with the bottom plate, the front end of the second-stage inclined supporting plate is hinged with the rear end of the first-stage inclined supporting plate, a plurality of limiting convex teeth are respectively arranged on the lower surface of the first-stage inclined supporting plate and the lower surface of the second-stage inclined supporting plate, the first supporting plate is hinged to the front part of the bottom plate, the upper end of the first supporting plate is clamped on the corresponding limiting convex teeth of the first-stage inclined supporting plate so that the first-stage inclined supporting plate is in contact with and props the arc-shaped steel main edge, and the second supporting plate is hinged to the rear part of the bottom plate, the upper end of the second-stage inclined supporting plate is clamped on the corresponding limiting convex teeth so that the second-stage inclined supporting plate is in contact with and props the arc-shaped steel main edge;
a splice seam between the top arch segment and the right or left loin segment is supported by the secondary diagonal braces, the primary diagonal braces supporting the right or left loin segment;
the first support plate is hinged with the bottom plate through a first rotating shaft, and the second support plate is hinged with the bottom plate through a second rotating shaft; the outer protruding end of the first rotating shaft and the outer protruding end of the second bolt are fixed in a tensioning manner by winding a steel wire cable, and the outer protruding end of the second rotating shaft and the outer protruding end of the first bolt are fixed in a tensioning manner by winding a steel wire cable
S2: arranging a plurality of square timber at intervals along the cambered surface above each cambered I-steel main ridge, wherein the square timber is erected at least across two cambered I-steel main ridges;
s3: an arc-shaped wood template is assembled and arranged above the square timber, and the two side edges of the whole arc-shaped wood template are connected to the poured side walls at the two sides of the foundation pit;
s4: and arranging reinforcement cages in the arc-shaped wood templates, the side walls of the foundation pit and the enclosure spaces of the poured side walls, and then pouring concrete to form the arc-shaped top plate.
2. The construction method of the arc-shaped top plate of the large-span non-column arch subway station in the hard rock stratum is characterized in that a round boss is arranged at the rear end of the bottom surface of the bottom plate, a limit groove matched with the round boss is arranged on the jacking, and limit assembly is formed between the bottom plate and the top plate through the round boss and the limit groove.
3. The construction method of the arc-shaped top plate of the large-span non-column arc-shaped subway station of the hard rock stratum according to claim 1, which is characterized in that the arc-shaped top plate adopts a sectional pouring method and comprises the following steps: the arch foot parts on two sides of the arc-shaped top plate are poured for a plurality of times from bottom to top, and the pouring height of each pouring is not more than 500mm; after pouring of arch feet on two sides of the arc-shaped top plate is completed, pouring is carried out on the residual arch crown part of the arc-shaped top plate in a divided manner.
4. The construction method of the arc-shaped top plate of the large-span non-column arc-shaped subway station of the hard rock stratum is characterized in that two sides are symmetrically poured at the same time when concrete is poured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410103388.1A CN117627044B (en) | 2024-01-25 | 2024-01-25 | Construction method of arc-shaped top plate of large-span non-column arc-shaped subway station in hard rock stratum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410103388.1A CN117627044B (en) | 2024-01-25 | 2024-01-25 | Construction method of arc-shaped top plate of large-span non-column arc-shaped subway station in hard rock stratum |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117627044A true CN117627044A (en) | 2024-03-01 |
| CN117627044B CN117627044B (en) | 2024-04-02 |
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| CN202410103388.1A Active CN117627044B (en) | 2024-01-25 | 2024-01-25 | Construction method of arc-shaped top plate of large-span non-column arc-shaped subway station in hard rock stratum |
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| CN106120855A (en) * | 2016-08-23 | 2016-11-16 | 青岛城建集团有限公司 | A kind of subway open-cut station arch is without rod structure and construction thereof |
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| CN114075872A (en) * | 2020-08-17 | 2022-02-22 | 北京城建轨道交通建设工程有限公司 | Large-load column-free arc-shaped top plate formwork and construction method thereof |
| CN115749250A (en) * | 2022-11-30 | 2023-03-07 | 上海二十冶建设有限公司 | Straight wall circular arch cast-in-place structure template and installation method thereof |
| CN219034022U (en) * | 2022-12-07 | 2023-05-16 | 中国建筑第五工程局有限公司 | Light open cut arch support |
-
2024
- 2024-01-25 CN CN202410103388.1A patent/CN117627044B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106120855A (en) * | 2016-08-23 | 2016-11-16 | 青岛城建集团有限公司 | A kind of subway open-cut station arch is without rod structure and construction thereof |
| CN208039305U (en) * | 2018-01-31 | 2018-11-02 | 广东省基础工程集团有限公司 | A kind of modular unit and its template system of excavation and cast-in-place domes |
| CN114075872A (en) * | 2020-08-17 | 2022-02-22 | 北京城建轨道交通建设工程有限公司 | Large-load column-free arc-shaped top plate formwork and construction method thereof |
| CN115749250A (en) * | 2022-11-30 | 2023-03-07 | 上海二十冶建设有限公司 | Straight wall circular arch cast-in-place structure template and installation method thereof |
| CN219034022U (en) * | 2022-12-07 | 2023-05-16 | 中国建筑第五工程局有限公司 | Light open cut arch support |
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