CN111677281A - Construction method of floor system with triangular truss easy to install - Google Patents
Construction method of floor system with triangular truss easy to install Download PDFInfo
- Publication number
- CN111677281A CN111677281A CN202010373518.5A CN202010373518A CN111677281A CN 111677281 A CN111677281 A CN 111677281A CN 202010373518 A CN202010373518 A CN 202010373518A CN 111677281 A CN111677281 A CN 111677281A
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- Prior art keywords
- steel bar
- floor
- triangular
- concrete
- truss
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
Abstract
The invention discloses a construction method of a triangular truss easy-installation floor system, which comprises construction preparation, including technical preparation, construction of an operation platform, erection of top plate supports, binding of top plate beams and installation of bottom dies, installation of triangular steel bar trusses, laying of high-strength extruded sheets, installation of water and electricity reserved holes and water and electricity reserved pipelines, laying and binding of steel bar meshes, concrete pouring of a top plate and installation of a gypsum rock suspended ceiling plate. The invention has the beneficial effects that: the prefabricated part is light in weight, and low-rise operation can artifical transport, and formwork speed is accelerated, has reduced the use amount of square timber and plywood, has reduced the quantity of reinforcing bar and concrete, can be in 3.4 meters span ranges, realizes not having the formwork can construct an overhead concrete floor. The span exceeds 3.4 meters, only simple support is needed, and a hidden beam or a post-tensioning prestressed tendon can be added according to the engineering practice condition to realize a large-span structure.
Description
Technical Field
The invention relates to a construction method of a floor system, in particular to a construction method of a floor system with a triangular truss easy to install, and belongs to the technical field of construction of multilayer brick-concrete structures or multilayer concrete shear wall structures.
Background
When the multi-layer full cast-in-place concrete structure floor construction and the concrete prefabricated floor construction are carried out, the existing construction method is that a triangular prefabricated support is prepared on site to form a floor self-supporting system, so that the construction progress is slow, meanwhile, the used prefabricated component has heavy self-weight, and a standard span needs to be supported by a formwork, so that the content of reinforcing steel bars and concrete of the structure is increased, the consumption of square timbers, plywood and labor is increased, and the construction cost is increased.
Disclosure of Invention
The invention aims to solve the problems and provide a construction method for a system of easily-installed floors of triangular trusses.
The invention realizes the purpose through the following technical scheme: a construction method of a triangular truss easy-to-install floor system comprises the following steps:
the construction method comprises the steps of firstly, construction preparation, including technical preparation, material preparation and site preparation, wherein the technical preparation is that before construction, a structural designer reviews a deepened drawing, a construction scheme and a branch technology of an easily-installed floor slab which is signed, in the construction drawing, the size and the position of a support component and a component list are marked on each floor plan, a support is marked by using a color code, the material preparation is that an easily-installed support is cut into a proper size, and corresponding color codes are marked at two ends of each support according to the color code on the drawing to ensure the correct transportation, lifting and installation positions and sequence of the support, and before the easily-installed support is lifted, an installer needs to mark a bearing wall so as to determine the position of a water and electricity reserved hole on a corresponding high-strength extruded sheet;
step two, constructing an operation platform, and selecting a movable scaffold construction platform or a double-row scaffold according to the specific engineering condition; when the scaffold is built, the maximum height of the scaffold can not exceed the floor elevation by 1.5M, and in the process of floor installation, water and electricians are required to install various pipelines and reserved holes immediately after the water and electricians are required to install the scaffold, so that the scaffold can be immediately poured after the floor installation is finished;
thirdly, roof support is erected, for a roof with the span exceeding 3M, the triangular truss supports are supported according to the detailed drawing of a structural designer, and the span can reach 5.8M through single-row support; two rows of struts are needed when the span reaches 5.8M to 6.5M;
fourthly, binding top plate beams and installing bottom dies, wherein when the span of the floor slab is large, a conversion hidden beam is designed in the floor slab or a conversion beam exceeding the thickness of the floor slab is designed in the floor slab, a reinforcing steel hidden beam is added to serve as a conversion beam, two ends of the reinforcing steel hidden beam are respectively bound and fixed with the top plate beams, and a foam polystyrene board serves as a bottom die to be clamped and laid between the adjacent floor slabs;
fifthly, mounting the triangular steel bar truss, pouring the bottom chord member of the triangular steel bar open-web truss in concrete, and fixedly connecting the steel bar top chord member of the triangular steel bar truss with the floor;
laying high-strength extruded sheets, and placing the strip-shaped high-strength extruded sheets on two wings of the triangular steel bar open-web truss concrete component;
seventhly, installing the hydropower reserved hole and the hydropower reserved pipeline, accurately positioning on the high-strength extruded sheet, pre-embedding the hole, and installing the hydropower reserved pipeline after concrete pouring is finished by penetrating the reserved hole;
laying and binding steel bar meshes, namely laying the steel bar meshes on the high-strength extruded sheet, wherein when the steel bar meshes are laid, 50mm is added to two cross lattices in an overlapping mode, steel bar stirrups are added if needed, the configuration rate of the stirrups is that one stirrup is placed in the width of each extruded sheet, and the distance between stirrups is not less than 1.0M;
and step nine, top plate concrete pouring, namely pouring concrete on the firmly bound reinforcing mesh sheets and pouring C25 concrete which exceeds the high-strength extruded sheet surface by 90mm to form a one-way floor with a T-shaped beam, wherein the beam rib is the base of the support
Step ten, installing a gypsum rock ceiling tile, directly fixing the gypsum rock ceiling tile below a beam of the triangular truss, fixing and pasting the gypsum board by adopting 40MM self-tapping screws and solvent-free glue, wherein the spacing between the self-tapping screws is 500 MM.
As a still further scheme of the invention: in the third step, the distance between vertical supporting vertical rods for supporting the top plate is 1800MM at most, the size of the square timber on the top support is 100x100MM at least, and the dismantling time of the top plate support is 28 days at least.
As a still further scheme of the invention: and fifthly, curing the concrete poured by the bottom chord member of the triangular steel bar hollow truss for not less than 3 days, so that the surface of the concrete is kept continuously moist, and a moisturizing measure needs to be taken for 7 days.
As a still further scheme of the invention: in the fifth step, when concrete is poured on the triangular steel bar hollow truss, nails are needed to fix the triangular steel bar hollow truss at every three supports to the wall, so that the triangular truss supports are prevented from moving laterally in the concrete pouring process.
As a still further scheme of the invention: in the step ten, wood laths or metal laths are used for edging the periphery of the bottom of the structural plate to support the suspended ceiling plate, so that the surface of the gypsum board is ensured to be flat.
The invention has the beneficial effects that: the construction method of the triangular truss floor system which is easy to install is reasonable in design:
1. the prefabricated part has light weight, and can be manually carried in low-rise operation;
2. the formwork supporting speed is accelerated;
3. the use amount of square wood and plywood is reduced;
4. the consumption of steel bars and concrete is reduced;
5. the construction of an overhead concrete floor can be realized within the span range of 3.4 meters without a support formwork, the span exceeds 3.4 meters, and only simple support is carried out;
6. according to the practical condition of engineering, a hidden beam or a post-tensioning prestressed tendon can be added to realize a large-span structure.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a construction method of a floor system with a triangular truss easy to install includes the following steps:
the construction method comprises the steps of firstly, construction preparation, including technical preparation, material preparation and site preparation, wherein the technical preparation is that before construction, a structural designer reviews a deepened drawing, a construction scheme and a branch technology of an easily-installed floor slab which is signed, in the construction drawing, the size and the position of a support component and a component list are marked on each floor plan, a support is marked by using a color code, the material preparation is that an easily-installed support is cut into a proper size, and corresponding color codes are marked at two ends of each support according to the color code on the drawing to ensure the correct transportation, lifting and installation positions and sequence of the support, and before the easily-installed support is lifted, an installer needs to mark a bearing wall so as to determine the position of a water and electricity reserved hole on a corresponding high-strength extruded sheet;
step two, constructing an operation platform, and selecting a movable scaffold construction platform or a double-row scaffold according to the specific engineering condition; when the scaffold is built, the maximum height of the scaffold can not exceed the floor elevation by 1.5M, and in the process of floor installation, water and electricians are required to install various pipelines and reserved holes immediately after the water and electricians are required to install the scaffold, so that the scaffold can be immediately poured after the floor installation is finished;
thirdly, roof support is erected, for a roof with the span exceeding 3M, the triangular truss supports are supported according to the detailed drawing of a structural designer, and the span can reach 5.8M through single-row support; two rows of struts are needed when the span reaches 5.8M to 6.5M;
fourthly, binding top plate beams and installing bottom dies, wherein when the span of the floor slab is large, a conversion hidden beam is designed in the floor slab or a conversion beam exceeding the thickness of the floor slab is designed in the floor slab, a reinforcing steel hidden beam is added to serve as a conversion beam, two ends of the reinforcing steel hidden beam are respectively bound and fixed with the top plate beams, and a foam polystyrene board serves as a bottom die to be clamped and laid between the adjacent floor slabs;
fifthly, mounting the triangular steel bar truss, pouring the bottom chord member of the triangular steel bar open-web truss in concrete, and fixedly connecting the steel bar top chord member of the triangular steel bar truss with the floor;
laying high-strength extruded sheets, and placing the strip-shaped high-strength extruded sheets on two wings of the triangular steel bar open-web truss concrete component;
seventhly, installing the hydropower reserved hole and the hydropower reserved pipeline, accurately positioning on the high-strength extruded sheet, pre-embedding the hole, and installing the hydropower reserved pipeline after concrete pouring is finished by penetrating the reserved hole;
laying and binding steel bar meshes, namely laying the steel bar meshes on the high-strength extruded sheet, wherein when the steel bar meshes are laid, 50mm is added to two cross lattices in an overlapping mode, steel bar stirrups are added if needed, the configuration rate of the stirrups is that one stirrup is placed in the width of each extruded sheet, and the distance between stirrups is not less than 1.0M;
and step nine, top plate concrete pouring, namely pouring concrete on the firmly bound reinforcing mesh sheets and pouring C25 concrete which exceeds the high-strength extruded sheet surface by 90mm to form a one-way floor with a T-shaped beam, wherein the beam rib is the base of the support
Step ten, installing a gypsum rock ceiling tile, directly fixing the gypsum rock ceiling tile below a beam of the triangular truss, fixing and pasting the gypsum board by adopting 40MM self-tapping screws and solvent-free glue, wherein the spacing between the self-tapping screws is 500 MM.
Further, in the third step of the present invention, the vertical supporting vertical rods for supporting the top plate have a distance of 1800MM at most, the square timber size of the top support is 100x100MM at least, and the removal time of the top plate support is 28 days at least.
Further, in the fifth step of the present invention, the concrete poured into the bottom chord of the triangular steel bar hollow truss is cured for not less than 3 days, so that the surface of the concrete is kept continuously moist, and a moisturizing measure needs to be taken for 7 days.
Further, in the fifth step of the present invention, when the triangular steel bar hollow truss is concreted, the triangular steel bar hollow truss at every three intervals needs to be fixed to the wall by using nails, so as to prevent the triangular truss brackets from moving laterally during concreting.
Further, in the embodiment of the invention, in the step ten, the ceiling plate is supported around the bottom of the structural plate by using a wood lath or a metal lath, so as to ensure that the surface of the gypsum board is flat.
The working principle is as follows: when the triangular truss 'easy-to-install' floor system construction method is used, a triangular truss is adopted to form a main body of a floor construction load support, bottom chords of the triangular steel bar open web truss are poured in concrete, strip-shaped high-strength extruded plates are placed on two wings of a triangular steel bar open web truss concrete component, 200 x 200 steel bar net sheets are laid above the steel bar chords at the top of the supports which are arranged in parallel and firmly bound, and C25 concrete which exceeds the extruded plate surface by 90mm is poured, so that a 'one-way' floor slab with a 'T-shaped beam' is formed, beam ribs of the floor slab are bases of the supports, and the inclined open web truss component in the supports is used as shear steel bars of the 'T-shaped beam'.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. A construction method of a triangular truss easy-to-install floor system is characterized by comprising the following steps: the method comprises the following steps:
the construction method comprises the steps of firstly, construction preparation, including technical preparation, material preparation and site preparation, wherein the technical preparation is that before construction, a structural designer reviews a deepened drawing, a construction scheme and a branch technology of an easily-installed floor slab which is signed, in the construction drawing, the size and the position of a support component and a component list are marked on each floor plan, a support is marked by using a color code, the material preparation is that an easily-installed support is cut into a proper size, and corresponding color codes are marked at two ends of each support according to the color code on the drawing to ensure the correct transportation, lifting and installation positions and sequence of the support, and before the easily-installed support is lifted, an installer needs to mark a bearing wall so as to determine the position of a water and electricity reserved hole on a corresponding high-strength extruded sheet;
step two, constructing an operation platform, and selecting a movable scaffold construction platform or a double-row scaffold according to the specific engineering condition; when the scaffold is built, the maximum height of the scaffold can not exceed the floor elevation by 1.5M, and in the process of floor installation, water and electricians are required to install various pipelines and reserved holes immediately after the water and electricians are required to install the scaffold, so that the scaffold can be immediately poured after the floor installation is finished;
thirdly, roof support is erected, for a roof with the span exceeding 3M, the triangular truss supports are supported according to the detailed drawing of a structural designer, and the span can reach 5.8M through single-row support; two rows of struts are needed when the span reaches 5.8M to 6.5M;
fourthly, binding top plate beams and installing bottom dies, wherein when the span of the floor slab is large, a conversion hidden beam is designed in the floor slab or a conversion beam exceeding the thickness of the floor slab is designed in the floor slab, a reinforcing steel hidden beam is added to serve as a conversion beam, two ends of the reinforcing steel hidden beam are respectively bound and fixed with the top plate beams, and a foam polystyrene board serves as a bottom die to be clamped and laid between the adjacent floor slabs;
fifthly, mounting the triangular steel bar truss, pouring the bottom chord member of the triangular steel bar open-web truss in concrete, and fixedly connecting the steel bar top chord member of the triangular steel bar truss with the floor;
laying high-strength extruded sheets, and placing the strip-shaped high-strength extruded sheets on two wings of the triangular steel bar open-web truss concrete component;
seventhly, installing the hydropower reserved hole and the hydropower reserved pipeline, accurately positioning on the high-strength extruded sheet, pre-embedding the hole, and installing the hydropower reserved pipeline after concrete pouring is finished by penetrating the reserved hole;
laying and binding steel bar meshes, namely laying the steel bar meshes on the high-strength extruded sheet, wherein when the steel bar meshes are laid, 50mm is added to two cross lattices in an overlapping mode, steel bar stirrups are added if needed, the configuration rate of the stirrups is that one stirrup is placed in the width of each extruded sheet, and the distance between stirrups is not less than 1.0M;
and step nine, top plate concrete pouring, namely pouring concrete on the firmly bound reinforcing mesh sheets and pouring C25 concrete which exceeds the high-strength extruded sheet surface by 90mm to form a one-way floor with a T-shaped beam, wherein the beam rib is the base of the support
Step ten, installing a gypsum rock ceiling tile, directly fixing the gypsum rock ceiling tile below a beam of the triangular truss, fixing and pasting the gypsum board by adopting 40MM self-tapping screws and solvent-free glue, wherein the spacing between the self-tapping screws is 500 MM.
2. The construction method of the triangular truss easy-installation floor system according to claim 1, characterized in that: in the third step, the distance between vertical supporting vertical rods for supporting the top plate is 1800mm at most, the size of the square timber on the top support is 100x100MM at least, and the dismantling time of the top plate support is 28 days at least.
3. The construction method of the triangular truss easy-installation floor system according to claim 1, characterized in that: and fifthly, curing the concrete poured by the bottom chord member of the triangular steel bar hollow truss for not less than 3 days, so that the surface of the concrete is kept continuously moist, and a moisturizing measure needs to be taken for 7 days.
4. The construction method of the triangular truss easy-installation floor system according to claim 1, characterized in that: in the fifth step, when concrete is poured into the triangular steel bar hollow truss, nails are needed to fix the triangular steel bar hollow truss every three supports to the wall.
5. The construction method of the triangular truss easy-installation floor system according to claim 1, characterized in that: in the step ten, a wood lath or a metal lath is used for edging the periphery of the bottom of the structural plate to support the ceiling plate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010373518.5A CN111677281A (en) | 2020-05-06 | 2020-05-06 | Construction method of floor system with triangular truss easy to install |
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| CN202010373518.5A CN111677281A (en) | 2020-05-06 | 2020-05-06 | Construction method of floor system with triangular truss easy to install |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113565346A (en) * | 2021-08-03 | 2021-10-29 | 山东天元建设机械有限公司 | Assembled floor landing-free adjustable supporting structure and construction method |
| CN116305504A (en) * | 2023-05-25 | 2023-06-23 | 山东高速德建集团有限公司 | Dynamo-based modular truss and modeling method for supporting mechanical model |
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2020
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| CN103628672A (en) * | 2013-12-04 | 2014-03-12 | 浙江城建建设集团有限公司 | Steel wire mesh and template combined type inclined reinforced concrete floor device and construction method thereof |
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Cited By (2)
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| CN113565346A (en) * | 2021-08-03 | 2021-10-29 | 山东天元建设机械有限公司 | Assembled floor landing-free adjustable supporting structure and construction method |
| CN116305504A (en) * | 2023-05-25 | 2023-06-23 | 山东高速德建集团有限公司 | Dynamo-based modular truss and modeling method for supporting mechanical model |
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Application publication date: 20200918 |