CN216947881U - Formwork support of I-shaped composite beam cast-in-situ bridge deck - Google Patents

Formwork support of I-shaped composite beam cast-in-situ bridge deck Download PDF

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Publication number
CN216947881U
CN216947881U CN202123195571.XU CN202123195571U CN216947881U CN 216947881 U CN216947881 U CN 216947881U CN 202123195571 U CN202123195571 U CN 202123195571U CN 216947881 U CN216947881 U CN 216947881U
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China
Prior art keywords
channel steel
bridge deck
steel
cast
shaped
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CN202123195571.XU
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Chinese (zh)
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徐英超
张俭
孙忠强
宿巳光
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China Third Metallurgical Group Co Ltd
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China Third Metallurgical Group Co Ltd
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Priority to CN202123195571.XU priority Critical patent/CN216947881U/en
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Abstract

The utility model relates to a formwork support of a cast-in-place bridge deck of an I-shaped composite beam. The beneficial effects are as follows: the device provided by the utility model utilizes the hanging erection of the I-shaped steel beam to install the construction platform for operations such as bridge deck template installation, steel bar binding and the like, and does not need to erect a scaffold from the ground, so that the erection and dismantling construction processes of the scaffold can be reduced, the labor intensity of constructors is reduced, the working efficiency is improved, the construction period is shortened, the lease cost of the scaffold is reduced, the construction labor cost for erection and dismantling of the scaffold is reduced, and the engineering construction cost is reduced.

Description

Formwork support of I-shaped composite beam cast-in-situ bridge deck
Technical Field
The utility model relates to the technical field of simply supported steel structure bridge erection, in particular to a formwork support for an I-shaped composite beam cast-in-place bridge deck.
Background
Compared with a reinforced concrete beam, the I-shaped composite beam has the advantages of effectively reducing the self weight of the structure, resisting the damage of earthquake, reducing the section size of the structure, reducing the construction difficulty and the like; compared with steel structure beams, the I-shaped composite beam has the advantages of reducing steel consumption, increasing rigidity, increasing stability and integrity, enhancing structure fire resistance and durability and the like. Therefore, i-shaped composite beams have been widely used in urban overpasses and building structures in recent years, and have gradually developed in a large-span direction.
The I-shaped composite beam generally comprises an I-shaped steel beam and a cast-in-place bridge deck slab, wherein the cast-in-place bridge deck slab is of a reinforced concrete structure, a bridge deck slab template needs to be installed before concrete is poured, reinforcing steel bars need to be bound, and finally concrete is poured. At present, scaffolds generally need to be erected in construction operations such as bridge deck formwork installation, reinforcement binding and the like. Because the height of the bridge is higher usually, the construction of erecting a scaffold for a cast-in-place bridge deck slab, installing a bridge deck slab template, binding reinforcing steel bars and the like is overhead operation, so that the workload is large, labor and time are wasted, potential safety hazards exist, and the safety risk is high. In addition, the scaffold is generally leased, the lease cost is high, the labor cost for mounting and dismounting the scaffold is high, and the construction cost is high.
SUMMERY OF THE UTILITY MODEL
In order to overcome the technical defects in the prior art, the technical problem to be solved by the utility model is to provide the formwork support for the I-shaped composite beam cast-in-place bridge deck, a construction platform for installing the bridge deck formwork, binding reinforcing steel bars and the like is erected in a suspended mode by utilizing I-shaped steel beams, a scaffold does not need to be erected from the ground, the erection and dismantling construction processes of the scaffold can be reduced, the labor intensity of constructors is reduced, the working efficiency is improved, the construction period is shortened, the lease cost of the scaffold is reduced, the construction labor cost for erecting and dismantling the scaffold is reduced, and the engineering construction cost is reduced.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a formwork support of an I-shaped composite beam cast-in-place bridge deck comprises a bolt, an upper channel steel, a lower channel steel, a rib plate, a gasket group, a nut, a base plate, an isolation sleeve and a formwork, and is characterized in that the rib plate is two triangular steel plates and is symmetrically welded on the inner sides of two I-shaped steel beam webs; the notch of the lower channel steel is downwards placed on the rib plate; the notch of the upper channel steel is upwards arranged above the I-shaped steel beam and corresponds to the lower channel steel; the isolation sleeves are N and are uniformly arranged between the upper channel steel and the lower channel steel, the bolts penetrate through the lower channel steel, the isolation sleeves and the upper channel steel, the base plate and the gasket group are sequentially sleeved on the bolts, and the nuts are screwed on the bolts to form a support frame;
the supporting frames are arranged along the I-shaped steel beam longitudinally at intervals of 600-800 mm;
the template is laid on the lower channel steel to form a template support.
The length of the isolation sleeve is the same as the thickness of the cast-in-place bridge deck to be poured.
The rib plates are arranged below the upper wing plate of the I-shaped steel beam and embedded in the cast-in-place bridge deck plate at the same depth with the upper wing plate of the I-shaped steel beam.
Compared with the prior art, the utility model has the beneficial effects that:
1) the existing I-shaped steel beam is used for hanging and erecting a construction platform for installing the bridge deck formwork, binding reinforcing steel bars and the like, and a scaffold does not need to be erected from the ground;
2) the scaffold erecting and dismantling construction procedures are reduced, the labor intensity of constructors is reduced, the working efficiency is improved, and the construction period is shortened;
3) the method has the advantages that the lease cost of the scaffold is reduced, the construction labor cost for erecting and dismantling the scaffold is reduced, and the construction cost of the project is saved.
Drawings
FIG. 1 is a schematic front view of the structural principle of the present invention;
FIG. 2 is a schematic top view of the structural principle of the present invention;
FIG. 3 is a schematic elevation view of the demolded casting of the present invention.
In the figure: 1-bolt 2-upper channel steel 3-lower channel steel 4-rib plate 5-shim plate group 6-nut 7-backing plate 8-I-shaped steel beam 9-isolation sleeve 10-template 11-concrete
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings:
as shown in fig. 1-3, the formwork support for the i-shaped composite beam cast-in-place bridge deck comprises a bolt 1, an upper channel steel 2, a lower channel steel 3, a rib plate 4, a gasket group 5, a nut 6, a base plate 7, an isolation sleeve 9 and a formwork 10, wherein the rib plate 4 is two triangular steel plates and is symmetrically welded on the inner sides of webs of two i-shaped steel beams 8 to play roles in supporting and longitudinal positioning; the notch of the lower channel steel 3 is downwards placed on the rib plate 4; the notch of the upper channel steel 2 is upwards arranged above the I-shaped steel beam 8 and corresponds to the lower channel steel 3; the isolation sleeves 9 are N and are uniformly arranged between the upper channel steel 2 and the lower channel steel 3, the bolts 1 penetrate through the lower channel steel 3, the isolation sleeves 9 and the upper channel steel 2, the base plate 7 and the gasket group 5 are sequentially sleeved on the bolts 1, and the nuts 6 are screwed on the bolts 1 to form a support frame;
the supporting frames are arranged along the I-shaped steel beam 8 at intervals of 600-800 mm in the longitudinal direction;
the formwork 10 is laid on the lower channel steel 3 to form a formwork support.
The length of the isolation sleeve 9 is the same as the thickness of a cast-in-place bridge deck to be poured.
The rib plates 4 are arranged below the upper wing plate of the I-shaped steel beam 8 and embedded in the cast-in-place bridge deck plate at the depth synchronous with the upper wing plate of the I-shaped steel beam 8.
Further, the distance sleeve 9 plays the dual role of supporting the upper channel steel 2 and facilitating the disassembly of the bolt 1.
A construction method for a formwork support of an I-shaped composite beam cast-in-place bridge deck slab comprises the following steps:
1) symmetrically welding the rib plates 4 on the inner side of the web plate of the I-shaped steel beam 8;
2) the notch of the lower channel steel 3 is lifted downwards and placed on the rib plate 4;
3) the notch of the upper channel steel 2 is lifted upwards and hung above the lower channel steel 3 and the I-shaped steel beam 8;
4) the method comprises the following steps that N isolation sleeves 9 are respectively and vertically arranged on a lower portion channel steel 3, a bolt 1 penetrates through the lower portion channel steel 3 and the isolation sleeves 9, an upper portion channel steel 2 is lowered to penetrate through the bolt 1 and seat on the isolation sleeves 9, a backing plate 7 and a gasket group 5 are sequentially sleeved on the bolt 1, and a nut 6 is screwed to form a support frame;
5) the steps 1) to 4) are repeated every 600-800 mm along the longitudinal direction of the I-shaped steel beam 8 to complete the installation of all the support frames;
6) the formwork 10 is laid on the lower channel 3 to form a formwork support.
Further, after the operations of binding the steel bars and pouring the concrete 11 are completed, the disassembly of the formwork support can be completed through reverse operation according to the steps, the disassembled bolt 1, the nut 6, the backing plate 7, the upper channel steel 2, the lower channel steel 3 and the like can be reused, and the isolation sleeve 9 is poured in the concrete 11 and cannot be reused.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims (3)

1. A formwork support of an I-shaped composite beam cast-in-place bridge deck comprises a bolt, an upper channel steel, a lower channel steel, a rib plate, a gasket group, a nut, a base plate, an isolation sleeve and a formwork, and is characterized in that the rib plate is two triangular steel plates and is symmetrically welded on the inner sides of two I-shaped steel beam webs; the notch of the lower channel steel is downwards placed on the rib plate; the notch of the upper channel steel is upwards arranged above the I-shaped steel beam and corresponds to the lower channel steel; the isolation sleeves are N and uniformly arranged between the upper channel steel and the lower channel steel, the bolts penetrate through the lower channel steel, the isolation sleeves and the upper channel steel, the base plate and the gasket set are sequentially sleeved on the bolts, and the nuts are screwed on the bolts to form a support frame;
the supporting frames are arranged along the I-shaped steel beam longitudinally at intervals of 600-800 mm;
the template is laid on the lower channel steel to form a template support.
2. The formwork support for the cast-in-place bridge deck of the I-shaped composite beam as claimed in claim 1, wherein the length of the isolation sleeve is the same as the thickness of the cast-in-place bridge deck to be poured.
3. The formwork support for the I-shaped composite beam cast-in-place bridge deck according to claim 1, wherein the rib plates are arranged below the upper wing plate of the I-shaped steel beam and are embedded in the cast-in-place bridge deck at the same depth as the upper wing plate of the I-shaped steel beam.
CN202123195571.XU 2021-12-17 2021-12-17 Formwork support of I-shaped composite beam cast-in-situ bridge deck Active CN216947881U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202123195571.XU CN216947881U (en) 2021-12-17 2021-12-17 Formwork support of I-shaped composite beam cast-in-situ bridge deck

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202123195571.XU CN216947881U (en) 2021-12-17 2021-12-17 Formwork support of I-shaped composite beam cast-in-situ bridge deck

Publications (1)

Publication Number Publication Date
CN216947881U true CN216947881U (en) 2022-07-12

Family

ID=82309735

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202123195571.XU Active CN216947881U (en) 2021-12-17 2021-12-17 Formwork support of I-shaped composite beam cast-in-situ bridge deck

Country Status (1)

Country Link
CN (1) CN216947881U (en)

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