CN211817929U

CN211817929U - Concrete combined permanent formwork

Info

Publication number: CN211817929U
Application number: CN202020162800.4U
Authority: CN
Inventors: 杨万和; 衣智明; 王亚; 王伟
Original assignee: Sinohydro Bureau 8 Co Ltd
Current assignee: Sinohydro Bureau 8 Co Ltd
Priority date: 2020-02-12
Filing date: 2020-02-12
Publication date: 2020-10-30
Anticipated expiration: 2030-02-12

Abstract

The utility model provides a concrete combined permanent formwork. The concrete combined permanent template comprises a plurality of concrete plates, and the concrete plates are sequentially enclosed to form a hollow cavity; the concrete slab comprises a plurality of convex blocks arranged at one side end and a plurality of gaps arranged at the other side end, and the shape of each convex block is matched with the shape of each gap; the convex blocks of one concrete slab correspond to the notches of the other concrete slab one by one and are in mortise and tenon connection. Compared with the prior art, the utility model provides a combined permanent template of concrete need not the form removal, reduces the job site labour, obviously shortens construction cycle. By adopting the ultra-high performance concrete as the non-dismantling formwork, the invasion of the external environment to the concrete can be weakened or delayed, the service life of the structure is prolonged, and the durability of the structure is improved.

Description

Concrete combined permanent formwork

Technical Field

The utility model relates to a building engineering technical field especially relates to a combined permanent template of concrete.

Background

The traditional concrete formwork mostly adopts a wood formwork, a steel formwork and an aluminum alloy formwork. Before concrete is poured, the wood template can be cut on site according to the concrete section design, and the steel template and the aluminum alloy need to be customized in a factory in advance. And (4) after the templates are assembled and fixed, pouring concrete, and dismantling the templates when the strength of the concrete reaches the design requirement. The traditional formwork is labor-consuming in mounting and dismounting, the construction period is long, the turnover frequency of the wood formwork is limited, the environment is polluted, the steel formwork and the aluminum alloy formwork are mostly needed in one-time engineering, and the amortization cost is large.

As in the prior art such as patent publications: CN102962884A, patent name: a concrete formwork is required to be dismantled in the technical scheme.

Other prior art is disclosed in patent publications: CN101566004A, patent name: although the concrete formwork is a dismantling-free concrete formwork in the technical scheme, additional auxiliary tools (such as a triangular steel bar and a square pyramid mould) are required for assembling, the assembling is complex and the construction period is long. As another example, patent publication No.: CN107268847A, patent name: an assembly type disassembly-free concrete template and a manufacturing method thereof.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a need not the permanent template of concrete combination formula of form removal.

The technical scheme of the utility model is that: a concrete combined permanent formwork comprises a plurality of concrete plates, wherein the concrete plates are sequentially enclosed to form a hollow cavity;

the concrete slab comprises a plurality of convex blocks arranged at one side end and a plurality of gaps arranged at the other side end, and the shape of each convex block is matched with the shape of each gap; the convex blocks of one concrete slab correspond to the notches of the other concrete slab one by one and are in mortise and tenon connection.

According to the scheme, the concrete slab is used as the template, and the template does not need to be detached after the concrete is poured, so that a permanent template is formed, and the permanent template can be used as a part of a structure to bear force together after being formed. In addition, the templates are spliced in a tenon-and-mortise connection mode, so that rapid and quick template assembly can be realized, additional auxiliary tools are not needed, the field labor force is reduced, and the construction period is shortened.

In order to facilitate mortise and tenon nested connection, the convex blocks and the notches are in trapezoidal structures.

In order to realize firm structure after connection, the lug and the notch are both in inverted trapezoidal structures.

Preferably, the surface of the concrete slab facing the hollow cavity is rough, so that the combination of cast-in-place concrete and a demolition-free formwork (the concrete slab) can be enhanced.

In order to enable the concrete slab to bear better force, a steel bar net sheet or steel fibers are arranged inside the concrete slab.

Preferably, the concrete slab is an ultrahigh-performance concrete slab with the strength not lower than 150 MPa.

In order to facilitate manual on-site assembly, the weight of the concrete slab is not more than 70 kg.

Preferably, a liquid expanding agent layer is laid at the joint of the bump and the notch at the bottom of the concrete combined permanent formwork so as to ensure the integrity of the non-dismantling formwork.

Compared with the prior art, the beneficial effects of the utility model are that: the concrete combined permanent formwork does not need to be disassembled, the labor force of a construction site is reduced, and the construction period is obviously shortened. By adopting the ultra-high performance concrete as the non-dismantling formwork, the invasion of the external environment to the concrete can be weakened or delayed, the service life of the structure is prolonged, and the durability of the structure is improved.

Drawings

Fig. 1 is a schematic structural view of a concrete combined permanent formwork provided by the present invention;

fig. 2 is a schematic structural view of the concrete slab of fig. 1.

In the figure, 1-concrete plate, 2-hollow cavity, 3-lug and 4-notch.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. For convenience of description, the words "upper", "lower", "left" and "right" in the following description are used only to indicate the correspondence between the upper, lower, left and right directions of the drawings themselves, and do not limit the structure.

As shown in fig. 1 and 2, the concrete combined permanent formwork provided in this embodiment includes four concrete slabs 1 in sequence, the four concrete slabs 1 sequentially enclose to form a hollow cavity 2, concrete is poured into the hollow cavity 2, and the concrete slabs 1 and the hollow cavity form a structure such as a square beam and a square column in sequence, so as to achieve the dismantling-free function of the concrete combined permanent formwork.

The concrete slab 1 is an ultrahigh-performance concrete slab with the strength not lower than 150Mpa, and a reinforcing steel bar net sheet or steel fibers are arranged in the concrete slab. The weight of the concrete slab 1 is not more than 70kg, and manual assembly is facilitated. The concrete panels 1 may be prefabricated in batches in a prefabrication plant.

The concrete slab 1 comprises a plurality of projections 3 arranged at one side end and a plurality of gaps 4 arranged at the other side end, and the shape of the projections 3 is matched with the shape of the gaps 4. The convex blocks 3 of one concrete plate are in one-to-one correspondence with the notches 4 of the other concrete plate and are in mortise and tenon connection. Lug 3 and breach 4 are the trapezium structure, and preferred be the trapezoidal structure of falling, and trapezoidal waist limit is the slope limit, can be better form between board spacing each other. The inverted trapezoid means that the side length of the upper base is larger than that of the lower base.

After assembling, liquid micro-expansion agent is injected into the joint of the bottom bump 3 and the gap 4 of the concrete combined permanent formwork so as to ensure the mutual spacing between the plates and form the integrity of the non-dismantling formwork.

One surface of the concrete slab 1 is provided with a rough surface, and the rough surface on the side faces the hollow cavity during assembly, so that the combination of cast-in-place concrete and a non-dismantling formwork can be enhanced.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.

Claims

1. A concrete combined permanent formwork is characterized by comprising a plurality of concrete plates (1), wherein the concrete plates (1) are sequentially enclosed to form a hollow cavity (2);

the concrete slab (1) comprises a plurality of convex blocks (3) arranged at one side end and a plurality of gaps (4) arranged at the other side end, and the shapes of the convex blocks (3) are matched with the shapes of the gaps (4); the convex blocks (3) of one concrete slab (1) are in one-to-one correspondence with the notches (4) of the other concrete slab (1) and are in mortise and tenon connection.

2. A concrete composite permanent form according to claim 1, characterized in that the projections (3) and the indentations (4) are of trapezoidal configuration.

3. A concrete composite permanent form according to claim 1, characterized in that the projections (3) and the indentations (4) are of inverted trapezoidal configuration.

4. A concrete composite permanent form according to any one of claims 1 to 3, characterized in that the surface of the concrete slab (1) facing the hollow cavity (2) is rough.

5. A concrete combined permanent form according to any one of claims 1-3, characterized in that inside the concrete slab (1) there is a steel mesh or steel fibers.

6. A concrete composite permanent form according to any one of claims 1 to 3, characterised in that the concrete slab (1) is an ultra high performance concrete slab with a strength not lower than 150 Mpa.

7. A concrete composite permanent form according to any one of claims 1 to 3, characterised in that the weight of the concrete slab (1) is not more than 70 kg.

8. A concrete composite permanent form according to any one of claims 1 to 3, characterised in that a liquid expansion agent is applied to the junction of the projections (3) and the indentations (4).