CN117627685B - Adjustable formwork structure of large-span non-column arc-shaped top plate of subway station - Google Patents
Adjustable formwork structure of large-span non-column arc-shaped top plate of subway station Download PDFInfo
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- CN117627685B CN117627685B CN202410103371.6A CN202410103371A CN117627685B CN 117627685 B CN117627685 B CN 117627685B CN 202410103371 A CN202410103371 A CN 202410103371A CN 117627685 B CN117627685 B CN 117627685B
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- 238000009415 formwork Methods 0.000 title claims abstract description 29
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 134
- 239000010959 steel Substances 0.000 claims abstract description 134
- 239000002023 wood Substances 0.000 claims abstract description 13
- 238000004804 winding Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 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
Abstract
The invention discloses an adjustable formwork structure of a large-span non-column arc top plate of a subway station, which comprises an arc wood formwork, square timber, arc I-steel main ribs, adjustable steel wedges, jacking and vertical rods which are sequentially arranged from top to bottom, wherein the square timber is longitudinally arranged and is arranged at intervals along the intrados of the arc wood formwork to support the arc wood formwork, the arc I-steel main ribs are longitudinally arranged at intervals to prop up each square timber, the arc I-steel main ribs are formed by splicing a plurality of arc I-steel sections, the adjustable steel wedges are arranged at the splicing positions of the adjacent arc I-steel sections to prop up, the jacking is fixed at the upper end part of the vertical rods, and the jacking is used as a supporting platform of the adjustable steel wedges. The invention has the advantages that: 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 an adjustable formwork structure of a large-span non-column arc-shaped top plate of a subway station.
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-shaped roof station has the advantages of stable structure, reasonable stress, high space utilization rate and attractive appearance.
The design and the installation of the formwork support system of the arc-shaped roof structure are important points for safety control of a large-span non-column arc-shaped roof station. 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 the adjustable formwork supporting structure of the large-span non-column arc-shaped top plate of the subway station, the adjustable formwork supporting structure is characterized in that an adjustable steel wedge is arranged between an arc-shaped I-steel main edge and a jacking, and a primary inclined supporting plate and a secondary inclined supporting plate which are hinged with the adjustable steel wedge are utilized to support the splicing seam of the arc-shaped I-steel main edge, so that the adjustable formwork supporting structure not only can adapt to the angle change of the arc-shaped I-steel main edge, but also can support multiple points of the arc-shaped I-steel main edge, and ensures the strength of the splicing seam; and meanwhile, 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:
the utility model provides a subway station is long to stride adjustable formwork structure of no post arc roof, its characterized in that adjustable formwork structure includes arc plank sheathing, square timber, arc I-steel owner stupefied, adjustable steel wedge, jacking and the pole setting that top-down set gradually, the square timber is along vertical setting and along the intrados interval arrangement of arc plank sheathing is in order to support the arc plank sheathing, arc I-steel owner stupefied in vertical interval arrangement is in order to prop up each square timber, arc I-steel owner stupefied comprises a plurality of arc I-steel sections concatenation, adjustable steel wedge sets up adjacent the concatenation department of arc I-steel section is propped up, the jacking is fixed in the upper end of pole setting, the jacking is as the supporting platform of adjustable steel wedge.
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 the connecting steel plate is fixedly connected with the right arch section or the left arch section through a second bolt.
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 invention has the advantages that: the adjustable steel wedge can realize the 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 an adjustable formwork structure of the present invention;
fig. 2 is a schematic view of an adjustable formwork structure tensioned with a wire cable according to 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. 1-2, the marks in the figures are respectively: the novel steel cable 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, a limiting convex tooth 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 cable 14 and a second steel cable 15.
Examples: as shown in fig. 1 and 2, the embodiment specifically relates to an adjustable formwork structure of a large-span non-column arc-shaped top plate of a subway station, which comprises an arc-shaped wood formwork 1, square timber 2, an arc-shaped i-steel main rib 3, an adjustable steel wedge, a jacking 10 and a vertical rod 11 which are sequentially arranged from top to bottom.
As shown in fig. 1 and 2, the jacking 10 is fixedly arranged at the top of the upright rod 11 and serves as a supporting platform of the adjustable steel wedge. The adjustable steel wedge is arranged between the jacking 10 and the arc-shaped I-steel main ridge 3, and the stable support of the arc-shaped I-steel main ridge 3 is realized by adjusting the angle. The arc I-steel main ridge 3 is arranged at intervals in the longitudinal direction of the large-span non-column arc roof station. Between the arc I-steel main ridge 3 and the arc wood template 1, a plurality of square timbers 2 which are longitudinally arranged in a large-span non-column arc roof station are arranged at intervals along the arc surface, the lower bottom surface of the square timbers 2 is at least supported by two arc I-steel main ridges 3, and the upper surface of the square timbers 2 supports the arc wood template 1.
As shown in fig. 1 and 2, based on the limited space of a construction site and the difficulty of integral hoisting and transportation, the arc-shaped i-steel main rib 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, the top arch section 3a and the left arch waist section are connected through a connecting piece, the top arch section 3a and the right arch waist section 3b are connected through a connecting piece, the left arch waist section and the left arch foot section are connected through a connecting piece, and the right arch waist section and the right arch foot section are connected through a connecting piece; 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.
As shown in fig. 1 and 2, in order to stably support and effectively protect the joint between the arc-shaped i-steel segments, an adjustable steel wedge is disposed at the joint between the top arch segment 3a and the right waisted arch segment 3b, and similarly, an adjustable steel wedge is disposed at the joint between the top arch segment 3a and the left waisted arch segment.
Taking an adjustable steel wedge between the top arch section 3a and the right arch section 3b as an example for explanation, 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 top support 10, the inclined supporting plate 6 comprises a first-stage inclined supporting plate 6a and a second-stage inclined supporting plate 6b, the right end of the first-stage inclined supporting plate 6a is hinged with the right end of the bottom plate 9, the right end of the second-stage inclined supporting plate 6b is hinged with the left 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 on the right part of the bottom plate 9 and the upper end of the corresponding limiting convex teeth 6c of the first-stage inclined supporting plate 6a so that the first-stage inclined supporting plate 6a is attached to the top support arc-shaped steel main edge 3, and the second supporting plate 8 is hinged on the left part of the bottom plate 9 and the upper end of the corresponding limiting convex teeth 6c of the second-stage inclined supporting plate 6b so that the second supporting plate 8 is attached on the left part of the corresponding limiting convex teeth 6 b.
When the adjustable steel wedge is arranged, the rightmost end of 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 cables 14 for connection are 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, the first steel wire cables 14 are symmetrically arranged by taking the vertical plane of the arc-shaped I-steel main rib 3 as a symmetrical plane, the second steel wire cables 15 for connection are wound between the end part of the second bolt 5b and the end part of the first rotating shaft 14, the number of the second steel wire cables 15 is two, the second steel wire cables 15 are symmetrically arranged by taking the vertical plane of the web plate of the arc-shaped I-steel main rib 3 as a symmetrical plane, and the tight connection of the adjustable steel wedge and the arc-shaped I-steel main rib 3 can be realized by the arrangement of the first steel wire cables 14 and the second steel wire cables 15, and the displacement of the adjustable steel wedge is prevented.
The beneficial effects of this embodiment are: the adjustable steel wedge can realize the 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 adjustable formwork structure of the large-span non-column arc top plate of the subway station is characterized by comprising an arc-shaped wood formwork, square timber, arc-shaped I-steel main ribs, adjustable steel wedges, jacking and vertical rods which are sequentially arranged from top to bottom, wherein the square timber is longitudinally arranged and is arranged at intervals along the intrados of the arc-shaped wood formwork to support the arc-shaped wood formwork, the arc-shaped I-steel main ribs are longitudinally arranged at intervals to prop up each square timber, the arc-shaped I-steel main ribs are formed by splicing a plurality of arc-shaped I-steel sections, the adjustable steel wedges are arranged at the splicing positions of the adjacent arc-shaped I-steel sections to prop up, and the jacking is fixed at the upper end part of the vertical rods and serves as a supporting platform of the adjustable steel wedges;
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 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.
2. An adjustable formwork structure for a large span pillarless roof of a subway station according to claim 1, wherein a splice seam between the top arch section and the right or left waisted arch section is supported by the secondary diagonal braces, the primary diagonal braces supporting the right or left waisted arch section.
3. The adjustable formwork structure of the large-span non-column arc-shaped top plate of the subway station, which is disclosed in claim 1, is characterized in that the first supporting plate is hinged with the bottom plate through a first rotating shaft, and the second supporting 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.
4. The adjustable formwork structure of the large-span non-column arc-shaped top plate of the subway station according to claim 1, wherein 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 jacking through the round boss and the limit groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410103371.6A CN117627685B (en) | 2024-01-25 | 2024-01-25 | Adjustable formwork structure of large-span non-column arc-shaped top plate of subway station |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410103371.6A CN117627685B (en) | 2024-01-25 | 2024-01-25 | Adjustable formwork structure of large-span non-column arc-shaped top plate of subway station |
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| Publication Number | Publication Date |
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| CN117627685A CN117627685A (en) | 2024-03-01 |
| CN117627685B true CN117627685B (en) | 2024-04-02 |
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| CN202410103371.6A Active CN117627685B (en) | 2024-01-25 | 2024-01-25 | Adjustable formwork structure of large-span non-column arc-shaped top plate of subway station |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105297630A (en) * | 2015-10-10 | 2016-02-03 | 正平路桥建设股份有限公司 | Construction method for double-component steel tubes of main arch arcs |
| CN109681239A (en) * | 2019-01-16 | 2019-04-26 | 北京市政建设集团有限责任公司 | A kind of unearthed tunnel mould bases construction method of shield |
| CN113482332A (en) * | 2021-06-01 | 2021-10-08 | 上海宝冶集团有限公司 | Method for processing supporting points of special-shaped curved plate |
| 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 |
| CN116480133A (en) * | 2023-04-28 | 2023-07-25 | 中建一局集团第三建筑有限公司 | Supporting system and method for Gaussian curved surface bare concrete construction formwork in sea environment |
-
2024
- 2024-01-25 CN CN202410103371.6A patent/CN117627685B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105297630A (en) * | 2015-10-10 | 2016-02-03 | 正平路桥建设股份有限公司 | Construction method for double-component steel tubes of main arch arcs |
| CN109681239A (en) * | 2019-01-16 | 2019-04-26 | 北京市政建设集团有限责任公司 | A kind of unearthed tunnel mould bases construction method of shield |
| CN113482332A (en) * | 2021-06-01 | 2021-10-08 | 上海宝冶集团有限公司 | Method for processing supporting points of special-shaped curved plate |
| 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 |
| CN116480133A (en) * | 2023-04-28 | 2023-07-25 | 中建一局集团第三建筑有限公司 | Supporting system and method for Gaussian curved surface bare concrete construction formwork in sea environment |
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