CN219137419U - Single-box multi-chamber suspension casting girder internal mold self-anchoring supporting system - Google Patents
Single-box multi-chamber suspension casting girder internal mold self-anchoring supporting system Download PDFInfo
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- CN219137419U CN219137419U CN202223347134.XU CN202223347134U CN219137419U CN 219137419 U CN219137419 U CN 219137419U CN 202223347134 U CN202223347134 U CN 202223347134U CN 219137419 U CN219137419 U CN 219137419U
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- 230000008093 supporting effect Effects 0.000 title claims abstract description 74
- 238000005266 casting Methods 0.000 title claims abstract description 21
- 238000004873 anchoring Methods 0.000 title claims abstract description 19
- 239000000725 suspension Substances 0.000 title claims description 12
- 239000004567 concrete Substances 0.000 claims abstract description 11
- 238000010276 construction Methods 0.000 claims description 10
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 3
- 235000014121 butter Nutrition 0.000 claims description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 2
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 2
- 241001330002 Bambuseae Species 0.000 claims description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 2
- 239000011425 bamboo Substances 0.000 claims description 2
- 239000011120 plywood Substances 0.000 claims description 2
- 239000003643 water by type Substances 0.000 claims 1
- 238000000034 method Methods 0.000 description 9
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 238000009415 formwork Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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Abstract
The utility model discloses a single-box multi-chamber cantilever casting girder inner mold self-anchoring supporting system which comprises at least two supporting units arranged side by side left and right, wherein each supporting unit comprises a main support and a secondary support positioned in front of the main support, space gaps for casting webs are reserved between every two adjacent supporting units and between the main support and the secondary support, two ends of each space gap are web casting templates, each main support comprises two first main longitudinal beams arranged side by side left and right, the first main longitudinal beams are arranged along a longitudinal bridge direction, the rear ends of the first main longitudinal beams are hung on a top plate of a concrete girder of a section, the front ends of the first main longitudinal beams are supported on a bottom plate template of a current section which is constructed by a first supporting upright rod, each secondary support comprises two second main longitudinal beams which are arranged side by side left and right, each second main longitudinal beam is supported above the bottom plate template, and special-shaped frames are paved between the two first main longitudinal beams. The utility model has the advantages of low cost, high erection efficiency, stability, reliability, good supporting effect and large reserved operable space in the main beam cavity.
Description
Technical Field
The utility model relates to the technical field of bridge superstructure girder suspension casting construction, in particular to a single-box multi-chamber suspension casting girder inner mould self-anchoring supporting system.
Background
Along with the rapid development of the construction industry of the domestic expressway, the prestressed concrete girder cable-stayed bridge is widely applied to the engineering of the bridge crossing the gully by virtue of the characteristics of large span, low cost and short construction period. The single-box multi-chamber main girder is used as an important upper structure of a cable-stayed bridge, a hanging basket suspension casting process is adopted, namely, a hanging basket is used as a bottom mould at the bottom of the girder, a cavity inner mould is erected, and main girder main body construction is carried out in sections. At present, a single-box multi-chamber suspended casting girder inner mould of a cable-stayed bridge is supported by a method of erecting a full-hall steel pipe support, namely, supporting rods such as a vertical rod, a parallel connection and an inclined stay rod are erected in a chamber. The method has the problems of dense supporting rod pieces, high mounting and dismounting difficulty, high material consumption, low erection efficiency, poor supporting effect, small reserved operable space in the main beam cavity and the like.
Disclosure of Invention
Aiming at the problems in the prior art, the utility model aims to provide a single-box multi-chamber suspended casting girder inner mould self-anchoring supporting system which has the advantages of less material consumption, low cost, high erection efficiency, stability, reliability, good supporting effect and large reserved operable space in a girder chamber.
In order to achieve the above purpose, the utility model provides a single-box multi-chamber cantilever casting girder internal mold self-anchoring supporting system, the construction of a concrete girder of the upper section and a bottom plate formwork of the current section is completed, the internal mold self-anchoring supporting system comprises at least two supporting units which are arranged side by side left and right, each supporting unit comprises a main support and an auxiliary support, the auxiliary support is positioned in front of the main support, a space gap for casting webs is reserved between the main support and the auxiliary support in the same supporting unit, web steel bars are arranged in the space gap, two ends of the space gap are web casting formworks, a plurality of pairs of pull rods are arranged between the corresponding two web casting formworks, the main support comprises two first main longitudinal beams which are arranged side by side left and right along the longitudinal bridge direction, anchor holes are preset on the top plate of the concrete girder of the upper section, the rear end of the first main longitudinal beam is fixed on the rear anchor rod, the front end of the first main longitudinal beam is supported on the bottom plate formwork through the first supporting vertical beam, the auxiliary support comprises two rectangular longitudinal beams which are arranged side by side, a plurality of pairs of pull rods are distributed between the two rectangular longitudinal beams which are distributed along the two second side vertical beams which are distributed along the two opposite sides of the second rectangular formwork, and the two special-shaped longitudinal beams are paved on the two side of the two side formworks.
In the scheme, the method comprises the following steps: vertical beams are respectively fixed below two ends of each special-shaped frame, and two ends of the opposite pull rod between two adjacent supporting units are respectively fixed on the vertical beams of the corresponding supporting units. The two adjacent supporting units are connected through the opposite pull rods, so that the whole supporting system is good in supporting effect, stable, reliable and strong in integrity.
In the scheme, the method comprises the following steps: the lower ends of the first support vertical rod and the second support vertical rod are coated with butter and covered with plastic tarpaulin, so that the first support vertical rod and the second support vertical rod can be conveniently pulled out after the concrete of the bottom plate is poured.
In the scheme, the method comprises the following steps: the adjustable jacking is arranged between the first main longitudinal beam and the first supporting vertical rod and between the second main longitudinal beam and the second supporting vertical rod and used for adjusting the overall height of the front end of the first main longitudinal beam and the height Cheng Huodi of the second main longitudinal beam, so that the height adjustment is more convenient and quick, and the quality problem of dislocation between construction sections is solved to a great extent.
In the scheme, the method comprises the following steps: the support device comprises a main support, wherein a first longitudinal beam and a corresponding first support upright rod are arranged in the main support, an inclined strut and a horizontal connecting rod are arranged between the two first support upright rods in the main support, and a horizontal connecting rod is arranged between the two second support upright rods which are opposite front and back or left and right in the auxiliary support.
In the scheme, the method comprises the following steps: the connecting lugs are arranged on the first main longitudinal beam, the second main longitudinal beam, the first supporting vertical rod and the second supporting vertical rod, the diagonal brace or the horizontal connecting rod is in pin joint with the corresponding connecting lugs, and the pin joint structure is more convenient to set on the connecting lugs.
In the scheme, the method comprises the following steps: the vertical beam top is pinned on the special-shaped frame, so that the installation and the disassembly are convenient, the turnover can be repeated, and the material waste is avoided.
The beneficial effects of the utility model are as follows: the rear end of the main longitudinal beam is anchored on the top plate of the poured upper section of concrete main beam, so that the use of supporting materials is reduced, and the cost is saved; the supporting system has simple structure, less component consumption compared with the method for erecting the full steel pipe bracket, and the supporting components are distributed at the edge of each supporting unit, so that the reserved space in the main beam cavity is large, and the working of operators is facilitated; the design of the main support and the auxiliary support facilitates the arrangement of web pouring templates between the main support and the auxiliary support, and the top plate at the top of the auxiliary support is a suspended section after pouring and forming, so that conditions are provided for the anchoring construction of the next construction section.
Drawings
Fig. 1 is a schematic side structural arrangement of the present utility model.
Fig. 2 is a schematic illustration of the cross-sectional structural arrangement of the anchoring point of the present utility model.
Fig. 3 is a schematic view of the cross-sectional structural arrangement of the first support pole of the present utility model.
Fig. 4 is a schematic plan view of the arrangement of the present utility model.
Fig. 5 is a schematic side view of the core structure of the present utility model.
Detailed Description
As shown in figures 1-5, the single-box multi-chamber suspension casting girder inner mould self-anchoring supporting system mainly comprises at least two supporting units A which are arranged side by side left and right, wherein the upper section of concrete girder and the bottom plate template of the current section are constructed.
Each supporting unit A comprises a main support B and an auxiliary support C, the auxiliary support C is located in front of the main support B, a space gap for pouring webs is reserved between every two adjacent supporting units A and between the main support B and the auxiliary support C in the same supporting unit A, web steel bars are arranged in the space gap, web pouring templates 7 are arranged at two ends of the space gap, and a plurality of pairs of pull rods 9 are arranged between the corresponding two web pouring templates 7.
The main support B comprises two first main longitudinal beams 2 which are arranged side by side left and right, the first main longitudinal beams 2 are arranged along the longitudinal bridge direction, anchor holes are preset on a top plate 5 of the concrete main beam of the upper section, downward rear anchor rods 1 are detachably fixed in the anchor holes, the rear ends of the first main longitudinal beams 2 are fixed on the rear anchor rods 1 (the rear anchor rods 1 are finish rolling screw thread steel, after anchor holes are reserved through the concrete main beam of the upper section, the rear ends of the first main longitudinal beams 2 are hung on the top plate through upper and lower nuts), and the front ends of the first main longitudinal beams are supported on a bottom plate template 6 through first supporting upright rods 3.
The auxiliary bracket C comprises two side-by-side second main longitudinal beams 10, and the two second main longitudinal beams 10 are supported above the bottom plate template 6 through four second supporting vertical rods 11 which are distributed in a rectangular shape.
A plurality of special-shaped frames 4 arranged along the transverse bridge direction are paved between the two first main longitudinal beams 2 and between the two second main longitudinal beams 10, and square timber and bamboo plywood templates are paved above the special-shaped frames 4.
It is noted that before each supporting unit A is installed, the bottom plate reinforcing steel bars and the web plate reinforcing steel bars in the internal mold self-anchoring supporting system are required to be applied in advance; moreover, each main longitudinal beam is of a double-spliced I-shaped section, each supporting upright rod is of a mouth-shaped section, the special-shaped frame 4, the inclined stay rod 13 and the horizontal connecting rod 14 are manufactured by adopting channel steel processing, and the vertical beam 8 is of a double-spliced groove steel section.
Preferably, vertical beams 8 are respectively fixed below two ends of each special-shaped frame 4, and two ends of a tie rod 9 between two adjacent supporting units A are respectively fixed on the vertical beams 8 of the corresponding supporting units A. The two adjacent supporting units A are connected through the opposite pull rod 9, so that the whole supporting system has good supporting effect, stability, reliability and stronger integrity.
Preferably, the lower ends of the first supporting upright 3 and the second supporting upright 11 are coated with butter and covered with plastic tarpaulin, so that the first supporting upright 3 and the second supporting upright 11 can be conveniently pulled out after the concrete of the bottom plate is poured.
Preferably, an adjustable jacking 12 is arranged between the first main longitudinal beam 2 and the first supporting vertical rod 3 and between the second main longitudinal beam 10 and the second supporting vertical rod 11, and is used for adjusting the overall height of the front end of the first main longitudinal beam 2 by Cheng Huodi and the second main longitudinal beam 10, so that the height adjustment is more convenient and quick, and the quality problem of dislocation between construction sections is solved to a great extent.
Preferably, an inclined strut 13 is arranged between the first main longitudinal beam 2 and the corresponding first supporting upright 3 in the main bracket B, an inclined strut 13 and a horizontal connecting rod 14 are arranged between the two first supporting upright 3 in the main bracket B, and a horizontal connecting rod 14 is arranged between the two second supporting upright 10 which are opposite front and back or opposite left and right in the auxiliary bracket C, which is beneficial to enhancing the overall stability of the supporting unit a.
Preferably, the first main girder 2, the second main girder 10, the first supporting upright 3 and the second supporting upright 11 are provided with connecting lugs 15, the diagonal braces 10 or the horizontal connecting rods 11 are pinned on the corresponding connecting lugs 15, and the pinning structure is more conveniently arranged on the connecting lugs 15.
And the top ends of the vertical beams 8 are in pin joint with the special-shaped frame 4, so that the special-shaped frame is convenient to install and detach, can be repeatedly recycled, and avoids material waste.
Claims (7)
1. The utility model provides a single case multichamber hangs and waters girder centre form self-anchoring braced system, last section concrete girder and current section's bottom plate template (6) all have been under construction and accomplish its characterized in that: the internal mold self-anchoring supporting system comprises at least two supporting units (A) which are arranged side by side left and right, each supporting unit (A) comprises a main support (B) and an auxiliary support (C), the auxiliary support (C) is positioned in front of the main support (B), an anchor hole is preset in a top plate (5) of an upper section of concrete girder, a downward rear anchor rod (1) is detachably fixed in the anchor hole, a space gap for pouring a web is reserved between the main support (B) and the auxiliary support (C) in the same supporting unit (A), web reinforcing steel bars are arranged in the space gap, two ends of the space gap are web pouring templates (7), a plurality of pairs of pull rods (9) are arranged between the corresponding two web pouring templates (7), the main support (B) comprises two first main stringers (2) which are arranged side by side left and right, the first main stringers (2) are arranged along a longitudinal bridge direction, a downward rear anchor rod (1) is detachably fixed in the anchor hole, the rear end of the first main stringers (2) is fixed in the rear anchor rod (1), the front end of the first main stringers (2) is supported by the first supporting bottom plate (3) on the second main stringers (6), the first main stringers (2) are distributed between the second main stringers (10) and the second main stringers (10) are distributed on the second main stringers (10) along the longitudinal direction A plurality of special-shaped frames (4) arranged along the transverse bridge direction are paved between the two second main longitudinal beams (10), and square timber and bamboo plywood templates are paved above the special-shaped frames (4).
2. The single-box multi-chamber suspension casting girder inner mold self-anchoring support system according to claim 1, wherein: vertical beams (8) are respectively fixed below two ends of each special-shaped frame (4), and two ends of a pair of pull rods (9) between two adjacent supporting units (A) are respectively fixed on the vertical beams (8) of the corresponding supporting units (A).
3. The single-box multi-chamber suspension casting girder inner mold self-anchoring support system according to claim 1, wherein: the lower ends of the first supporting vertical rod (3) and the second supporting vertical rod (11) are coated with butter and covered with plastic tarpaulin.
4. The single-box multi-chamber suspension casting girder inner mold self-anchoring support system according to claim 1, wherein: an adjustable jacking (12) is arranged between the first main longitudinal beam (2) and the first supporting vertical rod (3) and between the second main longitudinal beam (10) and the second supporting vertical rod (11).
5. The single-box multi-chamber suspension casting girder inner mold self-anchoring support system according to claim 1, wherein: an inclined support rod (13) is arranged between a first main longitudinal beam (2) in the main support (B) and a corresponding first support vertical rod (3), an inclined support rod (13) and a horizontal connecting rod (14) are arranged between two first support vertical rods (3) in the main support (B), and a horizontal connecting rod (14) is arranged between two second support vertical rods (11) which are opposite front and back or opposite left and right in the auxiliary support (C).
6. The single-box multi-chamber suspension casting girder inner mold self-anchoring support system according to claim 5, wherein: the connecting lugs (15) are arranged on the first main longitudinal beam (2), the second main longitudinal beam (10), the first supporting vertical rod (3) and the second supporting vertical rod (11), and the inclined supporting rods (13) or the horizontal connecting rods (14) are in pin joint with the corresponding connecting lugs (15).
7. The single-box multi-chamber suspension casting girder inner mold self-anchoring support system according to claim 2, wherein: the top ends of the vertical beams (8) are in pin joint with the special-shaped frame (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223347134.XU CN219137419U (en) | 2022-12-13 | 2022-12-13 | Single-box multi-chamber suspension casting girder internal mold self-anchoring supporting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223347134.XU CN219137419U (en) | 2022-12-13 | 2022-12-13 | Single-box multi-chamber suspension casting girder internal mold self-anchoring supporting system |
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| Publication Number | Publication Date |
|---|---|
| CN219137419U true CN219137419U (en) | 2023-06-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223347134.XU Active CN219137419U (en) | 2022-12-13 | 2022-12-13 | Single-box multi-chamber suspension casting girder internal mold self-anchoring supporting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219137419U (en) |
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2022
- 2022-12-13 CN CN202223347134.XU patent/CN219137419U/en active Active
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