CN216239364U

CN216239364U - Assembly type UHPC disassembly-free template

Info

Publication number: CN216239364U
Application number: CN202120782582.9U
Authority: CN
Inventors: 郭永昌; 卓柯先; 冯昶; 肖淑华
Original assignee: Guangdong University of Technology
Current assignee: Guangdong University of Technology
Priority date: 2021-04-16
Filing date: 2021-04-16
Publication date: 2022-04-08
Anticipated expiration: 2031-04-16

Abstract

The utility model relates to the technical field of concrete templates, in particular to an assembled UHPC (ultra high performance concrete) disassembly-free template. The utility model discloses an assembled UHPC (ultra high performance concrete) disassembly-free template, which is free from on-site cutting and assembly, and is free from template disassembly after concrete reaches the strength, so that the on-site workload and the working strength are reduced, building waste is reduced, and the template is more environment-friendly; the UHPC template does not need to be dismantled and can be used as a protective layer of reinforced concrete, so that the durability of a concrete structure is improved; the surface smoothness of the prefabricated template is increased, the construction of a leveling layer is reduced in the decoration process, and the cost is reduced; the self weight of the template is low, so that the construction difficulty is reduced; through draw-in groove and protruding joint between the template for easily install between the template, and connect closely, difficult emergence displacement avoids producing and leaks thick liquid, influences the roughness and the construction quality of post.

Description

Assembly type UHPC disassembly-free template

Technical Field

The utility model relates to the technical field of concrete templates, in particular to an assembled UHPC (ultra high performance concrete) disassembly-free template.

Background

The reinforced concrete column refers to a column made of reinforced concrete material. The bearing member is the most basic bearing member in various engineering structures such as houses, bridges, hydraulic engineering and the like, and is commonly used as a strut, a pier, a foundation column, a tower and a compression bar of a truss. In the process of reinforced concrete construction, at present, in the construction technology of concrete columns, a plurality of wood templates or steel templates are mostly adopted to enclose a cavity for pouring concrete, then the concrete column is poured in situ, and the wood templates or the steel templates are removed after the concrete column is solidified and reaches the form removal strength.

When the wood template is adopted, the following defects exist: 1) the construction process is complicated and tedious, and the time cost is high. 2) When the wooden template is dismantled, the wooden template easily destroys the surface of the concrete column, and a large amount of building rubbish is generated after the wooden template is dismantled. 3) After the wooden templates are used for multiple times, the splicing seams among the wooden templates are obvious, the surface of the concrete column is rough, and the flatness is reduced to some extent. When a steel form is used, there are disadvantages in that 1) the size or shape is limited. 2) The self weight is large, and the installation and the removal need to be carried out by large equipment. 3) Compared with a wood template, the cost of the steel template is higher.

SUMMERY OF THE UTILITY MODEL

The utility model provides an assembly type UHPC (ultra high performance polycarbonate) disassembly-free template, which solves the problems that a wood template or a steel template needs to be disassembled after being installed and the cost is high.

The specific technical scheme is as follows:

the utility model provides a UHPC disassembly-free template, which comprises: the lower-layer template assembly and at least one group of upper-layer template assemblies arranged on the lower-layer template assembly;

the lower-layer template assembly and the upper-layer template assembly are both in rectangular frame structures;

the lower-layer template assembly comprises four first templates, and the upper-layer template assembly comprises four second templates;

a first clamping groove is formed in the side edge of each first template, so that four first templates are sequentially clamped to form a lower-layer template assembly;

a second clamping groove is formed in the side edge of each second template, so that the four second templates are sequentially clamped to form an upper-layer template assembly;

and a protrusion is arranged on the bottom edge of the second template contacted with the first template, a third clamping groove is arranged on the top edge of the first template corresponding to the protrusion, and a third clamping groove is also arranged on the top edge of the second template.

Preferably, the first formwork and the second formwork are both made of UHPC material and steel mesh.

Preferably, the surface of the mesh reinforcement is provided with anchor bolts.

Preferably, the anchor is fixed at the intersection of the transverse reinforcement and the longitudinal reinforcement of the mesh reinforcement.

Preferably, the anchor is formed by welding a steel disc and a steel bar;

the thickness of steel disc is 4mm, the radius of steel disc is 12mm, the diameter of reinforcing bar is 4 mm.

Preferably, the thickness of the first template is 20-30 mm, and the thickness of the second template is 20-30 mm.

Preferably, one end of the third clamping groove is open.

Preferably, the length and the width of the first clamping groove are the same as those of the side edge of the first template to be clamped;

and the length and the width of the second clamping groove are the same as those of the side edge of the second template to be clamped.

Preferably, the UHPC material consists of the following raw materials:

cement, silica fume, quartz powder, fine sand, steel fiber, a water reducing agent and water;

the ratio of water to gelled material in the UHPC material was 0.2.

Preferably, said UHPC material comprises per cubic meter: 800kg of cement, 250kg of silica fume, 120kg of quartz powder, 820kg of fine sand, 150kg of steel fiber, 25kg of water reducing agent and 210kg of water.

According to the technical scheme, the utility model has the following advantages:

the utility model provides an assembled UHPC non-dismantling template which is made of UHPC materials. Compared with a wood template, the assembled UHPC non-dismantling template does not need to be cut and assembled on site, and after the concrete reaches the strength, the template does not need to be dismantled, so that the site workload and the working strength are reduced, the construction waste is reduced, and the assembled UHPC non-dismantling template is more green and environment-friendly; the UHPC template does not need to be dismantled and can be used as a protective layer of reinforced concrete, so that the durability of a concrete structure is improved; the prefabricated template is additionally provided with a smooth surface, the construction of a leveling layer is reduced in the decoration process, and the cost is reduced. Compared with a steel template, the assembled UHPC non-dismantling template does not need to hoist and dismantle the template, and the self weight of the template is lower, so that the construction difficulty is reduced; the assembled UHPC disassembly-free template is used once, and is not required to be used circularly, so that the use cost is reduced. In addition, the first template/the second template in the assembled UHPC non-dismantling template are clamped and connected through the clamping groove and the protrusion, so that the templates are easy to install and are tightly connected, displacement is not easy to occur, and the phenomenon that slurry leakage occurs to affect the flatness and the construction quality of the column is avoided.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a 3D schematic diagram of a first template in an embodiment of the utility model;

FIG. 2 is a top view of a first template in an embodiment of the utility model;

FIG. 3 is a cross-sectional view of a first template in an embodiment of the utility model;

FIG. 4 is a 3D schematic of a second template in accordance with an embodiment of the present invention; FIG. 5 is another 3D representation of a second template in accordance with an embodiment of the present invention;

FIG. 6 is a schematic view of the installation of a lower deck template assembly in an embodiment of the present invention;

FIG. 7 is a schematic illustration of the installation of a first template and a second template in an embodiment of the utility model;

FIG. 8 is a top view of an assembled UHPC non-stripping die plate in an embodiment of the present invention;

FIG. 9 is a schematic view of an anchor configuration in accordance with an embodiment of the present invention;

fig. 10 is a schematic structural view of a mesh reinforcement according to an embodiment of the present invention;

wherein the illustration is as follows:

1. anchoring the bolts; 2. a steel disc; 3. reinforcing steel bars; 4. a reinforcing mesh; 5. a first card slot; 6. a third card slot; 7. a first template; 8. a second template; 9. a protrusion; 10. and a second card slot.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the embodiments of the present invention will be described in detail and fully hereinafter, and it should be understood that the embodiments described hereinafter are only a part of the embodiments of the present invention, but 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 3D schematic diagram of a first template 7 according to an embodiment of the utility model is shown.

Referring to fig. 2, a top view of the first template 7 in the embodiment of the present invention is shown.

Referring to fig. 3, a cross-sectional view of the first template 7 according to the embodiment of the present invention is shown.

Referring to fig. 4 and 5, two schematic diagrams of the second template 8 according to the embodiment of the utility model are shown.

Referring to fig. 6, an installation diagram of a lower template assembly according to an embodiment of the present invention is shown.

Referring to fig. 7, an installation diagram of the first form 7 and the second form 8 according to the embodiment of the present invention is shown.

Referring to fig. 8, a top view of an assembled UHPC disassembly-free template in an embodiment of the present invention is shown.

Referring to fig. 9, a schematic structural diagram of an anchor 1 according to an embodiment of the present invention is shown.

Referring to fig. 10, a schematic structural diagram of a mesh reinforcement 4 according to an embodiment of the present invention is shown.

The utility model provides an embodiment of an assembled UHPC non-dismantling template, which comprises the following components: the lower-layer template assembly and at least one group of upper-layer template assemblies arranged on the lower-layer template assembly.

The lower template component and the upper template component are both rectangular frame structures.

The lower layer formwork assembly comprises four first formworks 7 and the upper layer formwork assembly comprises four second formworks 8.

In this embodiment, the first template 7 and the second template 8 are both made of UHPC material.

In this embodiment, the first template 7 and the second template 8 are the same size.

As shown in fig. 1 to 3 and fig. 6, a first clamping groove 5 is formed in a side edge of each first formwork 7, so that the four first formworks 7 are sequentially clamped to form a lower formwork assembly. Specifically, the side edge of each first template 7 is clamped in the first clamping groove 5 of the adjacent first template 7 and sequentially clamped to form a rectangular frame; or a convex block is arranged on the side edge of each first template 7, and the convex blocks are clamped in the first grooves 5 and sequentially clamped to form a rectangular frame.

As shown in fig. 4 and 5, a second clamping groove 10 is formed in a side edge of each second formwork 8, so that the four second formworks 8 are sequentially clamped to form an upper formwork assembly. Specifically, the side edge of each second template 8 is clamped in a second clamping groove 10 of an adjacent second template 8, and the side edges are sequentially clamped to form a rectangular frame; or a convex block is arranged on the side edge of each second template 8, and the convex blocks are clamped in the second clamping grooves 10 and sequentially clamped to form a rectangular frame.

In fig. 3, the side of the first template 7 and the side of the second template 8 are both provided with a bump, the first template 7 and the second template 8 are both square, and the side length is 850 mm.

The bottom edge of the second template 8 which is contacted with the first template 7 is provided with a bulge 9, the top edge of the first template 7 corresponding to the bulge 9 is provided with a third clamping groove 6, and the top edge of the second template 8 is also provided with the third clamping groove 6.

In this embodiment, as shown in fig. 7, the protrusions 9 on the bottom edge of the second template 8 are engaged with the third engaging grooves 6 of the first template 7, so that the first set of upper and lower template assemblies are connected to form a non-detachable UHPC template.

In this embodiment, the number of the upper template assemblies may be increased according to the engineering requirements. Therefore, the top edge of the second form 8 of the present application is also provided with a third clamping groove 6 for clamping the second form 8 of the second set of upper form assemblies.

In another embodiment of the assembled UHPC non-dismantling formwork provided by the utility model, the thickness of the first formwork 7 is 20-30 mm, and the thickness of the second formwork 8 is 20-30 mm.

In another embodiment of the non-removable assembled UHPC template provided by the utility model, one end of the third clamping groove 6 is open.

In this embodiment, the opening at one end of the third slot 6 can facilitate the protrusion 9 of the second template 8 to enter the third slot 6 from the opening end.

In this embodiment, both ends of the third slot 6 are preferably opened, and the protrusion 9 of the second template 8 enters from any end of the third slot 6.

In this embodiment, the length of the protrusion 9 of the second template 8 is preferably the same as the length of the third card slot 6.

In another embodiment of the assembled UHPC non-dismantling template provided by the utility model, the length and the width of the first clamping groove 5 are the same as those of the side edge of the first template 7 to be clamped;

the length and width of the second clamping groove 10 are the same as those of the side edge of the second template 8 to be clamped.

In this embodiment, both ends of the first and second engaging

grooves

5 and 10 are preferably open, so that the side of the first/

second forms

7 and 8 can enter the first/second

engaging grooves

5 and 10.

In the utility model, the first clamping groove 5, the second clamping groove 10 and the third clamping groove 6 are long clamping grooves, and the first template 7 and the second template 8 are connected by adopting the long clamping grooves, so that the connection stability between the templates is improved, the risks of template deviation and slurry leakage in the construction process are reduced, and the construction quality is ensured.

The shapes of the first clamping groove 5, the second clamping groove 10 and the third clamping groove 6 are not particularly limited, the clamping grooves can be semicircular, triangular and the like, and the clamping grooves are completely matched with the side edges or the protrusions 9 of the corresponding templates.

In another embodiment of the assembled UHPC disassembly-free formwork of the present invention, the first formwork 7 and the second formwork 8 are both made of UHPC material and steel mesh 4.

Reinforcing meshes 4 are arranged in the first formwork 7 and the second formwork 8, so that self-contraction cracks of the first formwork 7 and the second formwork 8 can be reduced; the holes are not generated in the concrete due to the pull rod, so that the surface of the concrete is more attractive, and the construction quality of the concrete is improved.

The length and width of the mesh reinforcement 4 and the diameter of the steel bars can be adjusted according to the engineering requirement, and the embodiment is not particularly limited. Preferably, the mesh reinforcement 4 has a size of 700mm x 700mm, and the diameter of the steel bars in the mesh reinforcement 4 is 4 mm.

In another embodiment of the fabricated UHPC detachment-free template provided by the present invention, the surface of the reinforcing mesh 4 is provided with the anchor bolts 1.

In this embodiment, the arrangement of the anchor 1 of the first template 7/the second template 8 reduces the concrete pull rod, increases the connection between the templates and the cast-in-place concrete, and makes the concrete have no holes generated by the pull rod, so that the surface of the concrete is more beautiful, and the construction quality of the concrete is improved.

In another embodiment of the UHPC demolition-free formwork according to the present invention, the anchor bolts 1 are welded to the intersections of the transverse bars and the longitudinal bars of the reinforcing mesh 4 (as shown in fig. 10).

The distribution of the anchor studs 1 on the mesh reinforcement 4 is not particularly limited in this embodiment, and it is preferable that adjacent anchor studs 1 are spaced apart by 150 mm.

In this embodiment, the level of the welding seam between the anchor 1 and the mesh reinforcement 4 is three.

In another embodiment of the UHPC detachment-free form provided by the present invention, the anchor 1 is formed by welding a steel disc 2 and a steel bar (as shown in fig. 9);

the thickness of steel disc 2 is 4mm, and the radius of steel disc 2 is 12mm, and the diameter of reinforcing bar is 4mm, and the height of reinforcing bar is 50 mm.

In this embodiment, the weld level between the steel disc 2 and the mesh of the steel bars is three levels.

In another embodiment of the assembled UHPC non-dismantling template provided by the utility model, the UHPC material consists of the following raw materials:

the mass ratio of water to the gelled material in the UHPC material is 0.2-0.3, and preferably 0.2.

In this embodiment, the cementing material is formed by transforming cement and silica fume in the UHPC raw material from slurry into a solid stone-like body through a series of physical and chemical actions, and cementing other solid materials into a whole.

In the embodiment, the cement is P.II 52.5-grade ordinary portland cement, the silica fume is powdery silica fume with the silicon dioxide content of more than 98%, the fine sand and the quartz powder are cleaned continuous graded fine sand and quartz powder, the water reducing agent is a high-efficiency polycarboxylic acid water reducing agent, and the fibers are copper-plated round and straight steel fibers.

In another embodiment of the present invention, the UHPC non-dismantling template comprises per cubic meter UHPC material: 800kg of cement, 250kg of silica fume, 120kg of quartz powder, 820kg of fine sand, 150kg of steel fiber, 25kg of water reducing agent and 210kg of water.

In another embodiment of the assembled UHPC disassembly-free template provided by the utility model, the preparation method of the UHPC material comprises the following steps:

mixing the fine sand and water under the condition of stirring, then adding the cementing material and the quartz powder for stirring, adding the water reducing agent and the water under the condition of stirring for mixing, and finally adding the steel fiber for mixing to obtain the UHPC material.

In this embodiment, the mixing and stirring time of the fine sand and the water is preferably 2 min; adding the cementing material and the quartz powder, and stirring for 3min preferably; adding the water reducing agent and the water, and preferably stirring and mixing for 8 min; the time for adding the steel fiber and stirring and mixing is preferably 8min totally.

The UHPC material obtained by the preparation method of the UHPC material provided by the embodiment has excellent performances.

In another embodiment of the non-dismantling template for the assembled UHPC provided by the present invention, the preparation of the first template 7 or the second template 8 specifically comprises:

placing UHPC cushion blocks on the formworks, then placing the reinforcing mesh 4 in the center of the formworks, then pouring UHPC materials, curing for 7 days by high-temperature steam, and then removing the formworks to obtain a first formwork 7/a second formwork 8. In another embodiment of the UHPC demolition-free formwork according to the present invention, the anchor bolts 1 are fixed to the intersections of the transverse reinforcement bars and the longitudinal reinforcement bars of the reinforcement mat 4.

In the present embodiment, the shape of the steel disk 2 is not particularly limited, but is preferably circular, oval or square.

The erection of the column template supporting system comprises the following specific steps: and binding a reinforcement cage on site, installing the assembled UHPC non-dismantling formwork provided by the embodiment of the utility model, erecting a formwork support system, then checking the perpendicularity of the formwork and the support system, pouring concrete, maintaining for 7-14 d, and dismantling the formwork support system.

The erection of the column template support system is a method known in the art, and the utility model is not described in detail.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. An assembled UHPC disassembly-free template, comprising: the lower-layer template assembly and at least one group of upper-layer template assemblies arranged on the lower-layer template assembly;

2. The fabricated UHPC disassembly-free template of claim 1,

a reinforcing mesh is arranged in the first formwork, and a reinforcing mesh is arranged in the second formwork;

the surface of the reinforcing mesh is provided with an anchor.

3. The fabricated UHPC break-free form of claim 2, wherein the anchor bolts are fixed to the mesh reinforcement at the intersections of the transverse reinforcement and the longitudinal reinforcement.

4. The fabricated UHPC disassembly-free template of claim 2, wherein the anchor is formed by welding a steel disc and a steel bar;

5. The assembled UHPC disassembly-free template of claim 1, wherein the thickness of the first template is 20-30 mm, and the thickness of the second template is 20-30 mm.

6. The fabricated UHPC break-free form of claim 1, wherein the third slot is open at one end.

7. The fabricated UHPC disassembly-free template of claim 1, wherein the length and width of the first clamping groove are the same as the length and width of the side edge of the first template to be clamped;