CN109914244B - Weak bracket system suitable for high-tower reinforced concrete combined beam steel structure installation and bottom and top plate concrete pouring and operation method thereof - Google Patents

Weak bracket system suitable for high-tower reinforced concrete combined beam steel structure installation and bottom and top plate concrete pouring and operation method thereof Download PDF

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Publication number
CN109914244B
CN109914244B CN201910342186.1A CN201910342186A CN109914244B CN 109914244 B CN109914244 B CN 109914244B CN 201910342186 A CN201910342186 A CN 201910342186A CN 109914244 B CN109914244 B CN 109914244B
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steel
bracket
installing
concrete
web
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CN109914244A (en
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徐国挺
唐中波
伏冠西
陈勉
胡盼
刘红成
魏圣
涂飞
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SICHUAN ROAD AND BRIDGE HUADONG CONSTRUCTION CO Ltd
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SICHUAN ROAD AND BRIDGE HUADONG CONSTRUCTION CO Ltd
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Abstract

The invention discloses a weak bracket system suitable for high tower reinforced concrete combined beam steel structure installation and bottom and top plate concrete pouring and an operation method thereof; the implementation method comprises the following steps: the method comprises the steps of (1) mounting a beam steel web bracket; (2) mounting a steel web of the cross beam; (3) bearer system switching; (4) pouring bottom plate concrete; (5) installing and removing the outer support in the top plate; (6) roof concrete pouring; (7) inner bracket disassembly; compared with the traditional high tower reinforced concrete combined beam support system, the support system has the advantages that: 1) The construction loads such as concrete dead weight are borne by the steel web plates of the cross beam, and the outer support only considers the dead weight load of the steel web plates of the cross beam and the crowd construction load, so that the steel consumption of the support system is greatly reduced. 2) The work load of the bracket is greatly reduced, the labor is saved, and the construction period is shortened.

Description

Weak bracket system suitable for high-tower reinforced concrete combined beam steel structure installation and bottom and top plate concrete pouring and operation method thereof
Technical Field
The invention relates to the field of construction of high-tower reinforced concrete combined beams, in particular to a weak bracket system suitable for installation of a high-tower reinforced concrete combined beam steel structure and concrete pouring of a bottom plate and a top plate and an operation method thereof.
Background
At present, the bracket system in the conventional construction of the domestic high-tower reinforced concrete combined beam usually considers the load such as the dead weight of the beam steel web and the dead weight of concrete, and the outer bracket of the weak bracket system only considers the dead weight of the beam steel web and the crowd construction load, and the load such as the concrete is borne by the beam steel web. Compared with the traditional construction support system, the support system has the advantages of material saving, simple working procedure, short construction period and the like.
Disclosure of Invention
Therefore, in order to solve the above-mentioned shortcomings, the present invention provides a weak bracket system suitable for the installation of steel structures of high tower reinforced concrete combined beams and the concrete pouring of bottom and top plates and an operation method thereof. Compared with the traditional high tower reinforced concrete combined beam support system, the support system has the advantages that: 1) The construction loads such as concrete dead weight are borne by the steel web plates of the cross beam, and the outer support only considers the dead weight load of the steel web plates of the cross beam and the crowd construction load, so that the steel consumption of the support system is greatly reduced. 2) The work load of the bracket is greatly reduced, the labor is saved, and the construction period is shortened.
The invention is realized in this way, construct a kind of weak support system suitable for the steel structure installation of the steel-concrete combined crossbeam of the high tower and concrete pouring of the bottom and top plates, characterized by that: the bracket system comprises a beam steel web bracket and a bottom plate suspension bracket;
the beam steel web support comprises a steel pipe column, a column horizontal cross-connection, a transverse I-steel, an unloading sand barrel, a support pad steel box A, a longitudinal I-steel, an I-steel beam, an I-steel longitudinal distribution beam, an I-steel transverse distribution beam and a steel plate bottom die;
the steel pipe columns are vertically connected by adopting flange plates, all the steel pipe columns are connected into a whole by using a column horizontal cross connection, transverse I-beams are arranged on the steel pipe columns, a sand unloading barrel and a supporting pad steel box A are arranged on the transverse I-beams, the sand unloading barrel and the supporting pad steel box A are used as unloading systems, longitudinal I-beams are arranged on the supporting pad steel box A, I-beam cross beams are arranged on the longitudinal I-beams, I-beam longitudinal distribution beams and I-beam transverse distribution beams are arranged on the I-beam cross beams, and steel plate bottom dies are paved on the I-beam transverse distribution beams;
the bottom plate suspension bracket comprises an I-steel cantilever beam, a support pad steel box B and finish rolling deformed steel bars; firstly, installing an I-steel cantilever beam at the top of a beam steel structure, installing a support pad steel box B on the I-steel cantilever beam, downwards penetrating finish rolling deformed steel bars from reserved holes corresponding to the I-steel cantilever beam and the support pad steel box B until the finish rolling deformed steel bars penetrate through an I-steel beam at the lower side of a steel plate bottom die and a support pad steel box A arranged below the beam, and installing a base plate, a nut and a lock nut at the support pad steel boxes at the top and the bottom of the finish rolling deformed steel bars so that the upper cantilever beam and the lower transverse I-steel form a whole;
the device also comprises a top plate inner bracket; after the bottom plate concrete has certain strength and the prestress construction is completed, a full-hall type bracket is erected on the bottom plate, the bracket adopts a buckling pipe type bracket or a bowl buckling type bracket, the erection is carried out according to the standard requirement, and a wood back and a wood template are arranged on the top according to the concrete elevation.
The operation method suitable for the installation of the steel structure of the high tower reinforced concrete combined beam and the concrete pouring of the bottom plate and the top plate is characterized in that; the method is implemented as follows;
step one: and (3) mounting a beam steel web bracket: designing a bracket according to the consideration of only the dead weight load of a beam steel web and the crowd construction load, wherein the bracket comprises a steel pipe column, a column horizontal cross-section, a transverse I-steel, an unloading sand barrel, a supporting pad steel box A, a longitudinal I-steel, an I-steel beam, an I-steel longitudinal distribution beam, an I-steel transverse distribution beam and a steel plate bottom die; all components are processed, manufactured and prepared in advance; firstly, installing steel pipe columns, vertically connecting the columns by adopting flange plates, connecting all the columns into a whole by using parallel connection, installing transverse I-steel after the construction of the columns is completed, installing and unloading sand barrels and supporting pad steel boxes on the steel columns as unloading systems, installing longitudinal I-steel, installing I-steel cross beams, installing longitudinal and transverse distribution beams, paving steel plate bottom dies;
step two: and (3) mounting a beam steel web: after the bracket is erected, hoisting the steel web of the beam in sections; firstly, measuring the plane position of a lofting beam steel web on a bottom die, then installing a beam steel web section by section according to the sequence of two sides and the middle, welding with the previous beam steel web section after the plane position and the verticality are adjusted, installing a diaphragm plate, and firstly installing the diaphragm plate, and circulating until all beam steel webs are installed;
step three: carrying system conversion: after the beam steel web is installed, the beam steel web has quite high rigidity, takes the beam steel web as a bearing structure, bears the dead weight load of the bottom plate concrete, and unloads an outer bracket (a beam steel web bracket) to convert the bracket bearing into a beam steel web bearing;
the bottom plate suspension bracket comprises an I-steel cantilever beam, a support pad steel box B and finish rolling screw steel;
firstly, installing an I-steel cantilever beam at the top of a beam, installing a supporting pad steel box on the I-steel cantilever beam, penetrating finish rolling deformed steel bars from the lower side of a preformed hole until penetrating through the I-steel beam at the lower side of a steel web and the supporting pad steel box installed below the beam, installing nuts and locking nuts at the positions of the supporting pad steel boxes at the top and the bottom, enabling the upper cantilever beam and the lower transverse I-steel to form a whole, and then applying prestress to the finish rolling deformed steel according to the load of a bottom plate, so that the load of an external bracket distribution beam system is borne on the cantilever beam and is transmitted to the steel structure beam, and meanwhile, separating a beam falling bracket from the steel web of the beam steel web bracket to finish the conversion of a bearing system;
step four: and (3) pouring bottom plate concrete: after the conversion of the bearing system is finished, installing a bottom plate steel bar and a prestressed pipeline according to the design and specification requirements, and pouring concrete;
step five: roof inner support installation and outer support removal: after the bottom plate concrete has certain strength and the prestress construction is completed, erecting a full-hall type bracket on the bottom plate, wherein the bracket can be a buckling pipe type bracket or a bowl buckling type bracket, is erected according to standard requirements, and is provided with a wood back and a wood template according to concrete elevation; simultaneously, the outer bracket (comprising a beam steel web bracket and a bottom plate suspension bracket) is disassembled;
step six: and (3) roof concrete pouring: after the inner bracket is installed, installing a roof steel bar and a prestressed pipeline, and pouring concrete;
step seven: and (3) inner support dismantling: and after the roof concrete has certain strength and the prestress construction is completed, the inner bracket is dismantled.
The invention has the following advantages: the invention discloses a weak bracket system suitable for high tower reinforced concrete combined beam steel structure installation and bottom and top plate concrete pouring and an operation method thereof; the implementation method comprises the following steps: the method comprises the steps of (1) mounting a beam steel web bracket; (2) mounting a steel web of the cross beam; (3) bearer system switching; (4) pouring bottom plate concrete; (5) installing and removing the outer support in the top plate; (6) roof concrete pouring; (7) inner bracket disassembly; compared with the traditional high tower reinforced concrete combined beam support system, the support system has the advantages that: 1) The construction loads such as concrete dead weight are borne by the steel web plates of the cross beam, and the outer support only considers the dead weight load of the steel web plates of the cross beam and the crowd construction load, so that the steel consumption of the support system is greatly reduced. 2) The work load of the bracket is greatly reduced, the labor is saved, and the construction period is shortened.
Drawings
FIG. 1 is a schematic elevational view of an overall implementation of a weak bracket system;
FIG. 2 is a schematic side view of an overall implementation of a weak stent system;
FIG. 3 is a schematic elevation view of a floor suspension bracket;
figure 4 is a schematic cross-sectional view of a floor suspension bracket.
Detailed Description
The following detailed description of the present invention will provide clear and complete description of the technical solutions of embodiments of the present invention, with reference to fig. 1-4, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides a weak bracket system suitable for high tower reinforced concrete combined beam steel structure installation and bottom and top plate concrete pouring by improving, which comprises a beam steel web bracket and a bottom plate suspension bracket;
the beam steel web bracket comprises a steel pipe upright post 1, an upright post horizontal transverse connection 2, a transverse I-shaped steel 3, an unloading sand barrel 4, a supporting pad steel box A5, a longitudinal I-shaped steel 6, an I-shaped steel beam 7, an I-shaped steel longitudinal distribution beam 8, an I-shaped steel transverse distribution beam 9 and a steel plate bottom die 10;
the steel pipe column 1 is vertically connected by adopting a flange plate, each steel pipe column 1 is connected into a whole by a column horizontal cross 2, a transverse I-steel 3 is arranged on the steel pipe column 1, a sand unloading barrel 4 and a supporting pad steel box A5 are arranged on the transverse I-steel 3, the sand unloading barrel 4 and the supporting pad steel box A5 are used as unloading systems, a longitudinal I-steel 6 is arranged on the supporting pad steel box A5, a I-steel beam 7 is arranged on the longitudinal I-steel 6, a I-steel longitudinal distribution beam 8 and a I-steel transverse distribution beam 9 are arranged on the I-steel beam 7, and a steel plate bottom die 10 is paved on the I-steel transverse distribution beam 9;
the bottom plate suspension bracket comprises an I-steel cantilever beam 11, a supporting pad steel box B12 and finish rolling screw steel 13; firstly, installing an I-steel cantilever beam 11 at the top of a beam steel structure 14, installing a support pad steel box B12 on the I-steel cantilever beam 11, penetrating finish rolling threaded steel 13 downwards from reserved holes corresponding to the I-steel cantilever beam 11 and the support pad steel box B12 until penetrating through a support pad steel box A5 arranged below a beam and an I-steel beam at the lower side of a steel plate bottom die 10, and installing a base plate, a nut and a locking nut at the support pad steel boxes at the top and the bottom of the finish rolling threaded steel 13 to form a whole of the upper cantilever beam and the lower transverse I-steel.
The operation method suitable for the installation of the steel structure of the high tower reinforced concrete combined beam and the concrete pouring of the bottom plate and the top plate is implemented in the following manner;
step one: mounting a beam steel web bracket; designing a bracket according to the consideration of only the dead weight load of a beam steel web and the crowd construction load, wherein the bracket comprises a steel pipe upright post 1, an upright post horizontal transverse joint 2, a transverse I-steel 3, an unloading sand bucket 4, a supporting and cushioning steel box A5, a longitudinal I-steel 6, an I-steel beam 7, an I-steel longitudinal distribution beam 8, an I-steel transverse distribution beam 9 and a steel plate bottom die 10; all components are processed, manufactured and prepared in advance; firstly, installing steel pipe columns, vertically connecting the columns by adopting flange plates, connecting all the columns into a whole by using parallel connection, installing transverse I-steel after the construction of the columns is completed, installing and unloading sand barrels and supporting pad steel boxes on the steel columns as unloading systems, installing longitudinal I-steel, installing I-steel cross beams, installing longitudinal and transverse distribution beams, paving steel plate bottom dies;
step two: mounting a steel web plate of the cross beam; after the bracket is erected, hoisting the steel web of the beam in sections; firstly, measuring the plane position of a lofting beam steel web on a bottom die, then installing a beam steel web section by section according to the sequence of two sides and the middle, welding with the previous beam steel web section after the plane position and the verticality are adjusted, installing a diaphragm plate, and firstly installing the diaphragm plate, and circulating until all beam steel webs are installed;
step three: carrying system conversion; after the beam steel web is installed, the beam steel web has quite high rigidity, takes the beam steel web as a bearing structure, bears the dead weight load of the bottom plate concrete, and unloads an outer bracket (a beam steel web bracket) to convert the bracket bearing into a beam steel web bearing;
the bottom plate suspension bracket comprises an I-steel cantilever beam 11, a support pad steel box B12 and finish rolling deformed steel bars 13;
firstly, installing an I-steel cantilever beam at the top of a beam, installing a supporting pad steel box on the I-steel cantilever beam, penetrating finish rolling deformed steel bars from the lower side of a preformed hole until penetrating through the I-steel beam at the lower side of a steel web and the supporting pad steel box installed below the beam, installing nuts and locking nuts at the positions of the supporting pad steel boxes at the top and the bottom, enabling the upper cantilever beam and the lower transverse I-steel to form a whole, and then applying prestress to the finish rolling deformed steel according to the load of a bottom plate, so that the load of an external bracket distribution beam system is borne on the cantilever beam and is transmitted to the steel structure beam, and meanwhile, separating a beam falling bracket from the steel web of the beam steel web bracket to finish the conversion of a bearing system;
step four: and (3) pouring bottom plate concrete: after the conversion of the bearing system is finished, installing a bottom plate steel bar and a prestressed pipeline according to the design and specification requirements, and pouring concrete;
step five: roof inner support installation and outer support removal: after the bottom plate concrete has certain strength and the prestress construction is completed, erecting a full-hall type bracket on the bottom plate, wherein the bracket can be a buckling pipe type bracket or a bowl buckling type bracket, is erected according to standard requirements, and is provided with a wood back and a wood template according to concrete elevation; simultaneously, the outer bracket (comprising a beam steel web bracket and a bottom plate suspension bracket) is disassembled;
step six: and (3) roof concrete pouring: after the inner bracket is installed, installing a roof steel bar and a prestressed pipeline, and pouring concrete;
step seven: and (3) inner support dismantling: and after the roof concrete has certain strength and the prestress construction is completed, the inner bracket is dismantled.
The invention provides a weak bracket system suitable for steel structure installation of a high-tower reinforced concrete combined beam and concrete pouring of a bottom plate and a top plate. The weak bracket system has the advantages of material saving, simple working procedure and short construction period. Compared with the traditional process, the invention has the advantages that:
1) The concrete dead weight and the like are borne by the steel web plate of the cross beam, and the outer support only considers the dead weight load of the steel truss girder of the cross beam and the crowd construction load, so that the steel consumption of a support system is greatly reduced.
2) The work load of the bracket is greatly reduced, the labor is saved, and the construction period is shortened.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (2)

1. The utility model provides a weak bracket system suitable for high tower steel and concrete combines crossbeam steel construction installation and end, roof concrete placement which characterized in that: the bracket system comprises a beam steel web bracket and a bottom plate suspension bracket;
the beam steel web support comprises a steel pipe column (1), a column horizontal cross-piece (2), a horizontal I-steel (3), an unloading sand bucket (4), a supporting steel box A (5), a longitudinal I-steel (6), an I-steel beam (7), an I-steel longitudinal distribution beam (8), an I-steel horizontal distribution beam (9) and a steel plate bottom die (10);
the steel pipe column (1) is vertically connected by adopting a flange plate, each steel pipe column (1) is connected into a whole by a column horizontal crosstie (2), a transverse I-steel (3) is arranged on the steel pipe column (1), a sand unloading barrel (4) and a supporting pad steel box A (5) are arranged on the transverse I-steel (3), the sand unloading barrel (4) and the supporting pad steel box A (5) are used as unloading systems, a longitudinal I-steel (6) is arranged on the supporting pad steel box A (5), an I-steel cross beam (7) is arranged on the longitudinal I-steel (6), an I-steel longitudinal distribution beam (8) and an I-steel transverse distribution beam (9) are arranged on the I-steel cross beam (7), and a steel plate bottom die (10) is paved on the I-steel transverse distribution beam (9);
the bottom plate suspension bracket comprises an I-steel cantilever beam (11), a supporting pad steel box B (12) and finish rolling screw thread steel (13); firstly, installing an I-steel cantilever beam (11) at the top of a beam steel structure (14), installing a support pad steel box B (12) on the I-steel cantilever beam (11), penetrating finish rolling threaded steel (13) downwards from reserved holes corresponding to the I-steel cantilever beam (11) and the support pad steel box B (12) until penetrating through a steel plate bottom die (10) lower I-steel beam and a support pad steel box A (5) arranged below the beam, and installing a base plate, a nut and a locking nut at the support pad steel boxes at the top and the bottom of the finish rolling threaded steel (13) to form a whole of the upper cantilever beam and the lower transverse I-steel;
the device also comprises a top plate inner bracket; after the bottom plate concrete has certain strength and the prestress construction is completed, a full-hall type bracket is erected on the bottom plate, the bracket adopts a buckling pipe type bracket or a bowl buckling type bracket, the erection is carried out according to the standard requirement, and a wood back and a wood template are arranged on the top according to the concrete elevation.
2. The operation method suitable for the installation of the steel structure of the high tower reinforced concrete combined beam and the concrete pouring of the bottom plate and the top plate is characterized in that; the method is implemented as follows;
step one: mounting a beam steel web bracket; designing a bracket according to the consideration of only the dead weight load of a beam steel web and the crowd construction load, wherein the bracket comprises a steel pipe upright post (1), an upright post horizontal cross joint (2), a transverse I-steel (3), an unloading sand bucket (4), a supporting pad steel box A (5), a longitudinal I-steel (6), an I-steel cross beam (7), an I-steel longitudinal distribution beam (8), an I-steel transverse distribution beam (9) and a steel plate bottom die (10); all components are processed, manufactured and prepared in advance; firstly, installing steel pipe columns, vertically connecting the columns by adopting flange plates, connecting all the columns into a whole by using parallel connection, installing transverse I-steel after the construction of the columns is completed, installing and unloading sand barrels and supporting pad steel boxes on the steel columns as unloading systems, installing longitudinal I-steel, installing I-steel cross beams, installing longitudinal and transverse distribution beams, paving steel plate bottom dies;
step two: mounting a steel web plate of the cross beam; after the bracket is erected, hoisting the steel web of the beam in sections; firstly, measuring the plane position of a lofting beam steel web on a bottom die, then installing a beam steel web section by section according to the sequence of two sides and the middle, welding with the previous beam steel web section after the plane position and the verticality are adjusted, installing a diaphragm plate, and firstly installing the diaphragm plate, and circulating until all beam steel webs are installed;
step three: carrying system conversion; after the beam steel web is installed, the beam steel web has quite high rigidity, the beam steel web is used as a bearing structure to bear the dead weight load of the bottom plate concrete, and the beam steel web bracket is unloaded to convert the bracket bearing into the beam steel web bearing;
the bottom plate suspension bracket comprises an I-steel cantilever beam (11), a supporting pad steel box B (12) and finish rolling screw thread steel (13);
firstly, installing an I-steel cantilever beam at the top of a beam, installing a supporting pad steel box on the I-steel cantilever beam, penetrating finish rolling deformed steel bars from the lower side of a preformed hole until penetrating through the I-steel beam at the lower side of a steel web and the supporting pad steel box installed below the beam, installing nuts and locking nuts at the positions of the supporting pad steel boxes at the top and the bottom, enabling the upper cantilever beam and the lower transverse I-steel to form a whole, and then applying prestress to the finish rolling deformed steel according to the load of a bottom plate, so that the load of an external bracket distribution beam system is borne on the cantilever beam and is transmitted to the steel structure beam, and meanwhile, separating a beam falling bracket from the steel web of the beam steel web bracket to finish the conversion of a bearing system;
step four: pouring bottom plate concrete; after the conversion of the bearing system is finished, installing a bottom plate steel bar and a prestressed pipeline according to the design and specification requirements, and pouring concrete;
step five: the inner support of the top plate is installed and the outer support is removed; after the bottom plate concrete has certain strength and the prestress construction is completed, erecting a full-hall type bracket on the bottom plate, wherein the bracket can be a buckling pipe type bracket or a bowl buckling type bracket, is erected according to standard requirements, and is provided with a wood back and a wood template according to concrete elevation; simultaneously removing the steel web bracket and the bottom plate suspension bracket of the beam;
step six: pouring roof concrete; after the inner bracket is installed, installing a roof steel bar and a prestressed pipeline, and pouring concrete;
step seven: dismantling the inner bracket; and after the roof concrete has certain strength and the prestress construction is completed, the inner bracket is dismantled.
CN201910342186.1A 2019-04-26 2019-04-26 Weak bracket system suitable for high-tower reinforced concrete combined beam steel structure installation and bottom and top plate concrete pouring and operation method thereof Active CN109914244B (en)

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CN111335166A (en) * 2020-03-09 2020-06-26 浙江交工集团股份有限公司 Construction method using self-bearing structure as temporary support
CN112323640B (en) * 2020-11-10 2023-11-07 中交二公局第三工程有限公司 Construction method for temporary cable-stayed corrugated steel web bridge advanced closure web
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