阅读说明：本技术 一种檐口及椽子的装配式构件 (Assembled component of eaves mouth and rafter ) 是由 孙茂军 张立彬 张永喆 于 2021-09-03 设计创作，主要内容包括：本发明公开了一种檐口及椽子的装配式构件包括：混凝土基体,其内预埋有纵向板钢筋组件和横向板钢筋；纵向板钢筋组件,其包括第一纵向板钢筋和第二纵向板钢筋,均沿椽子的长度方向设置；横向板钢筋,其与所述第一纵向板钢筋交叉叠放；椽子拉结钢筋,其与所述第一纵向板钢筋和所述第二纵向板钢筋固定连接；拉结梁钢筋,其与所述横向板钢筋固定连接；其中,所述第二纵向板钢筋设置在椽子内。本发明通过设置可装配式的构件可以工厂化生产,减少雨季影响主体施工,同时脚手架用量减少,缩短施工周期,降低施工成本；混凝土基体的原料中加入蒙脱土、合成纤维能够加快装配式构件凝固以及增强构件的结构稳定性。(The invention discloses an assembled component of cornice and rafter, comprising: the concrete matrix is internally embedded with a longitudinal plate steel bar assembly and a transverse plate steel bar; the longitudinal plate steel bar assembly comprises a first longitudinal plate steel bar and a second longitudinal plate steel bar which are arranged along the length direction of the rafter; the transverse plate steel bars are crossly stacked with the first longitudinal plate steel bars; the rafter tie steel bars are fixedly connected with the first longitudinal plate steel bars and the second longitudinal plate steel bars; the tie beam steel bars are fixedly connected with the transverse plate steel bars; wherein the second longitudinal plate reinforcing steel bar is arranged in the rafter. The invention can be produced in a factory by arranging the assembly type components, reduces the influence on main body construction in rainy season, reduces the using amount of scaffolds, shortens the construction period and reduces the construction cost; montmorillonite and synthetic fiber are added into the raw materials of the concrete matrix, so that the solidification of the assembled member can be accelerated, and the structural stability of the member can be enhanced.)

1. The utility model provides an assembled component of eaves mouth and rafter which characterized in that includes:

the concrete matrix is internally embedded with a longitudinal plate steel bar assembly and a transverse plate steel bar;

the longitudinal plate steel bar assembly comprises a first longitudinal plate steel bar and a second longitudinal plate steel bar which are arranged along the length direction of the rafter;

the transverse plate steel bars are crossly stacked with the first longitudinal plate steel bars;

the rafter tie steel bars are fixedly connected with the first longitudinal plate steel bars and the second longitudinal plate steel bars;

the tie beam steel bars are fixedly connected with the transverse plate steel bars;

wherein the second longitudinal plate reinforcing steel bar is arranged in the rafter.

2. A fabricated structural member for cornice and rafters as claimed in claim 1 wherein said rafter connecting bars are of S-shaped configuration with one end thereof being attached to said first longitudinal plate bar and the other end thereof being attached to said second longitudinal plate bar.

3. The assembled component of eaves mouth and rafter of claim 1, characterized in that, the drawknot beam reinforcing bar includes first pre-buried portion and second pre-buried portion, first pre-buried portion and horizontal slab reinforcement fixed connection, second pre-buried portion and roof beam fixed connection.

4. An assembly of cornice and rafters as claimed in claim 1 further comprising lifting U-bars fixed in the concrete matrix no more than 500mm from the cornice.

5. An assembly type member of cornice and rafters according to claim 1, wherein the concrete base layer comprises the following raw materials in parts by weight:

100 portions of base material, 20 to 50 portions of water, 5 to 10 portions of montmorillonite, 1 to 3 portions of early strength agent, 2 to 5 portions of expanding agent and 8 to 16 portions of synthetic coarse fiber.

6. An assembly type member of cornice and rafters according to claim 5, wherein the concrete base layer comprises the following raw materials in parts by weight:

400 portions of base material 200-one, 30-40 portions of water, 7-9 portions of montmorillonite, 1.5-2.5 portions of early strength agent, 3-4 portions of expanding agent and 10-14 portions of synthetic coarse fiber.

7. An assembly type member of cornice and rafters according to claim 5, wherein the concrete base layer comprises the following raw materials in parts by weight:

300 parts of base material, 35 parts of water, 8 parts of montmorillonite, 2 parts of early strength agent, 3.5 parts of expanding agent and 12 parts of synthetic coarse fiber.

8. An eaves mouth and rafter fabricated member according to claim 5 wherein the early strength agent comprises one or more of triethanolamine, sodium chloride, sodium nitrite, potassium bitartrate, sodium sulfate, calcium chloride and potassium aluminum sulfate.

9. An assembled cornice and rafter member as defined in claim 5 wherein the expansion agent comprises one of a calcium sulfoaluminate, calcium oxide-sulfoaluminate or UEA expansion agent.

10. An eaves mouth and rafter fabricated member according to claim 5 wherein the synthetic coarse fibres comprise one or more of polypropylene fibres (PPF), polyethylene fibres (PEF), polyvinyl alcohol fibres (PVAF), polyester fibres (PETF) or polyamide fibres (PAF).

Technical Field

The invention relates to the technical field of buildings, in particular to an assembled component of a cornice and a rafter.

Background

Archaize building is generally for wooden or reinforced concrete frame construction, in order to save timber, now mostly adopts reinforced concrete frame construction, members such as bracket adopt the timber component form, and the reinforced concrete maintenance phase of eaves mouth generally need reach the design strength requirement in 28 days, just can demolish the template, and construction cycle receives natural environment influence factor great, consequently adopts assembled component form to the eaves mouth, shortens construction cycle, and follow-up paint and wooden construction process can go on in advance.

In summary, there is a need to design an assembled member for cornice and rafters to solve the problem of long production period of cornice in the prior art.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides the assembled member of the cornice and the rafter, which is simple to install, reliable in stress, capable of shortening the construction period, capable of realizing industrial production and capable of improving the construction efficiency.

In order to achieve the purpose, the invention adopts the following technical scheme:

a fabricated component of cornice and rafters, comprising:

the concrete matrix is internally embedded with a longitudinal plate steel bar assembly and a transverse plate steel bar;

the longitudinal plate steel bar assembly comprises a first longitudinal plate steel bar and a second longitudinal plate steel bar which are arranged along the length direction of the rafter;

the transverse plate steel bars are crossly stacked with the first longitudinal plate steel bars;

the rafter tie steel bars are fixedly connected with the first longitudinal plate steel bars and the second longitudinal plate steel bars;

the tie beam steel bars are fixedly connected with the transverse plate steel bars;

wherein the second longitudinal plate reinforcing steel bar is arranged in the rafter.

In some embodiments of the present invention, the rafter connecting steel bar is of an S-shaped structure, and one end of the rafter connecting steel bar is hung on the first longitudinal plate steel bar, and the other end of the rafter connecting steel bar is hung on the second longitudinal plate steel bar.

In some embodiments of the present invention, the tie beam reinforcing bars include a first embedded portion and a second embedded portion, the first embedded portion is fixedly connected to the transverse plate reinforcing bars, and the second embedded portion is fixedly connected to the beam.

In some embodiments of the invention, the fabricated member further comprises a lifting U-shaped steel bar fixed in the concrete matrix, not more than 500mm from the cornice.

In some embodiments of the present invention, the concrete base layer comprises the following raw materials in parts by weight:

100 portions of base material, 20 to 50 portions of water, 5 to 10 portions of montmorillonite, 1 to 3 portions of early strength agent, 2 to 5 portions of expanding agent and 8 to 16 portions of synthetic coarse fiber.

In some embodiments of the present invention, the concrete base layer comprises the following raw materials in parts by weight:

400 portions of base material 200-one, 30-40 portions of water, 7-9 portions of montmorillonite, 1.5-2.5 portions of early strength agent, 3-4 portions of expanding agent and 10-14 portions of synthetic coarse fiber.

In some embodiments of the present invention, the concrete base layer comprises the following raw materials in parts by weight:

300 parts of base material, 35 parts of water, 8 parts of montmorillonite, 2 parts of early strength agent, 3.5 parts of expanding agent and 12 parts of synthetic coarse fiber.

In some embodiments of the invention, the early strength agent comprises one or more of triethanolamine, sodium chloride, sodium nitrite, potassium bitartrate, sodium sulfate, calcium chloride, and potassium aluminum sulfate.

In some embodiments of the invention, the swelling agent comprises one of a calcium sulfoaluminate-based swelling agent, a calcium oxide-calcium sulfoaluminate-based swelling agent, or a UEA swelling agent.

In some embodiments of the invention, the synthetic coarse fibers comprise one or more of polypropylene fibers (PPF), polyethylene fibers (PEF), polyvinyl alcohol fibers (PVAF), polyester fibers (PETF), or polyamide fibers (PAF).

Compared with the prior art, the technical scheme of the invention has the following technical effects:

the invention solves the problem that the maintenance period of the reinforced concrete of the cornice generally needs to meet the requirement that the formwork can be dismantled in 28 days to reach the design strength by arranging the assembly type component, the subsequent painting and wood working construction procedures can be carried out in advance, the factory production can be realized, the influence on the main body construction in rainy season is reduced, meanwhile, the use amount of scaffolds is reduced, the construction period is shortened, and the construction cost is reduced; montmorillonite and synthetic fiber are added into the raw materials of the concrete matrix, so that the solidification of the assembled member can be accelerated, and the structural stability of the member can be enhanced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a front view of the structure of a fabricated member for cornice and rafters.

Fig. 2 is a side cross-sectional view of the structure of a fabricated member of a cornice and rafters.

Fig. 3 is a plan view of a structure of a fabricated member of cornice and rafters.

Fig. 4 is a cross-sectional view of the structure of the rafter.

Reference numerals: 1-column; 2-beam; 3-concrete matrix; 4-tying the beam steel bars; 5-transverse plate steel bars; 6-rafter; 7-plate joint; 8-longitudinal plate reinforcement assembly; 81-first longitudinal plate rebar; 82-second longitudinal plate rebar; 9-rafter tie bars; and 10-hoisting the U-shaped steel bars.

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.

In the description of the present invention, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless otherwise explicitly stated or limited. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

Example 1

Referring to fig. 1, a fabricated member for cornice and rafters, comprising:

the concrete matrix 3 is internally embedded with longitudinal plate steel bar assemblies 8 and transverse plate steel bars 5;

the longitudinal plate steel bar assembly 8 comprises a first longitudinal plate steel bar 81 and a second longitudinal plate steel bar 82 which are arranged along the length direction of the rafter 6;

referring to fig. 3, the transversal plate reinforcement 5 is cross-stacked with the first longitudinal plate reinforcement 81;

rafter tie bars 9 fixedly connected with the first longitudinal plate bars 81 and the second longitudinal plate bars 82;

the tie beam steel bars 4 are fixedly connected with the transverse plate steel bars 5;

wherein said second longitudinal plate reinforcement 82 is arranged in the rafter 6.

In some embodiments of the present invention, referring to fig. 4, the rafter connecting bars 9 are S-shaped structures, one end of which is hung on the first longitudinal plate bars 81, and the other end of which is hung on the second longitudinal plate bars 82.

In some embodiments of the present invention, referring to fig. 2, the tie beam reinforcing bars 4 include a first embedded portion and a second embedded portion, the first embedded portion is fixedly connected to the transverse plate reinforcing bars 5, and the second embedded portion is fixedly connected to the beam 2.

In some embodiments of the present invention, the concrete base layer comprises the following raw materials in parts by weight:

100 parts of base material, 50 parts of water, 10 parts of montmorillonite, 1 part of early strength agent, 2 parts of expanding agent and 8 parts of synthetic group fiber;

the synthetic coarse fibers include polypropylene fibers (PPF) and polyethylene fibers (PEF).

The early strength agent comprises sodium chloride and calcium chloride in equal parts by weight.

The expanding agent is calcium oxide-calcium sulphoaluminate expanding agent.

The preparation process of the assembly type component comprises the following steps:

s1, placing the transverse plate steel bars 5, the longitudinal plate steel bar assemblies and the rafter tie steel bars 9 at equal intervals according to the positions shown in the figure 1;

s2, pre-embedding the tie beam reinforcing steel bars 4 and the hoisting U-shaped reinforcing steel bars 10, wherein the distance between the hoisting U-shaped reinforcing steel bars 10 and the cornice is 500 mm;

s3, pouring after the concrete base layer raw materials are mixed, and finishing the fabricated member;

s4, erecting a cornice scaffold to ensure the support firmness and simultaneously perform wood work and paint construction;

s5, referring to fig. 3, the horizontal plate steel bars 5 at the plate joint 7 are bound, a formwork is erected, and concrete is poured.

And S6, performing drawknot on the drawknot beam steel bars 4 exposed out of the assembly type component and the beam 2 to reach the depth required by the design, pouring concrete, and forming the beam plate into a whole.

Example 2

Compared with the embodiment 1, in the embodiment, the concrete base layer comprises the following raw materials in parts by weight:

200 parts of base material, 40 parts of water, 7 parts of montmorillonite, 1.5 parts of early strength agent, 3 parts of expanding agent and 10 parts of synthetic coarse fiber;

the synthetic coarse fibers include polypropylene fibers (PPF) and polyvinyl alcohol fibers (PVAF).

The early strength agent comprises sodium nitrite and sodium sulfate in equal parts by weight.

The swelling agent adopts UEA swelling agent.

Example 3

Compared with the embodiment 1, in the embodiment, the concrete base layer comprises the following raw materials in parts by weight:

300 parts of base material, 35 parts of water, 8 parts of montmorillonite, 2 parts of early strength agent, 3.5 parts of expanding agent and 12 parts of synthetic coarse fiber;

the synthetic coarse fibers include polypropylene fibers (PPF), polyvinyl alcohol fibers (PVAF), and polyester fibers (PETF).

The early strength agent comprises sodium sulfate and aluminum potassium sulfate in equal parts by weight.

The swelling agent adopts UEA swelling agent.

Example 4

Compared with the embodiment 1, in the embodiment, the concrete base layer comprises the following raw materials in parts by weight:

400 parts of base material, 30 parts of water, 9 parts of montmorillonite, 2.5 parts of early strength agent, 4 parts of expanding agent and 14 parts of synthetic coarse fiber;

the synthetic coarse fibers include polyester fibers (PETF) and polyamide fibers (PAF).

The early strength agent comprises triethanolamine, potassium hydrogen tartrate and sodium sulfate in equal parts by weight.

The expanding agent is calcium sulphoaluminate expanding agent.

Example 5

Compared with the embodiment 1, in the embodiment, the concrete base layer comprises the following raw materials in parts by weight:

500 parts of base material, 20 parts of water, 10 parts of montmorillonite, 2.5 parts of early strength agent, 5 parts of expanding agent and 16 parts of synthetic coarse fiber;

the synthetic coarse fibers include polyvinyl alcohol fibers (PVAF).

The early strength agent comprises triethanolamine, sodium nitrite and potassium hydrogen tartrate in equal parts by weight.

The expanding agent is calcium sulphoaluminate expanding agent.

Comparative example 1

Compared to example 3, the synthetic coarse fibers were replaced with 0.5 parts of a hemp knife. Corresponding replacement is carried out in the preparation method.

Comparative example 2

In contrast to example 3, the synthetic coarse fibers were omitted from the concrete raw material. Corresponding replacement is carried out in the preparation method.

Comparative example 3

Compared with the concrete of the embodiment 3, montmorillonite is omitted from the concrete raw material. Corresponding replacement is carried out in the preparation method.

Test example 1

The fabricated structures prepared in examples 1 to 5 and comparative examples 1 to 3 were used as test samples, and after curing for 28 days, the compressive strength, the split tensile strength, and whether cracks were generated on the surface of each set of samples were measured, and the lengths of the cracks were recorded. The test specimens are cube standard specimens of 150mm by 150 mm. The compressive strength and the splitting compressive strength are tested according to GB/T50081-2002 'test method for mechanical properties of common concrete'. The compressive strength and crack resistance test results are shown in the following table:

	presence or absence of cracks	Crack length/cm	Initial cracking time/min	Grade of impermeability
					Example 1	Is free of	0	67	P10
Example 2	Is free of	0	68	P10
					Example 3	Is free of	0	78	P11
Example 4	Is free of	0	66	P9
					Example 5	Is free of	0	70	P10
Comparative example 1	Is provided with	4.1	41	P7
					Comparative example 2	Is provided with	4.8	34	P6
Comparative example 3	Is provided with	5.1	30	P6

As can be seen from the above table, the fabricated components prepared according to the embodiments of the present invention are excellent in performance, and among them, the technical effect of embodiment 3 is the best; fine cracks were visible in each comparative example, and the initial cracking time was shortened by nearly half; in comparative example 1, synthetic coarse fibers are replaced by a hemp knife, and the initial cracking time and the crack length of the fabricated component are different from those of other comparative examples; synthetic fibers are omitted in a comparative example 2, montmorillonite is omitted in a comparative example 3, the obtained fabricated component is large in crack length, short in initial cracking time and lowest in anti-permeability grade, and therefore the anti-cracking and anti-permeability strength of the fabricated component can be improved well by adding the montmorillonite and the synthetic fibers.

The invention solves the problem that the maintenance period of the reinforced concrete of the cornice generally needs to reach the requirement of designing strength to disassemble the template in 28 days by arranging the assembly type components, thereby greatly shortening the forming time, carrying out the subsequent paint and wood construction procedures in advance, realizing the industrial production, reducing the influence of rainy seasons on the main construction, reducing the using amount of scaffolds, shortening the construction period and reducing the construction cost; montmorillonite and synthetic fiber are added into the raw materials of the concrete matrix, so that the solidification of the assembled member can be accelerated, and the structural stability of the member can be enhanced.

In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.