Molded steel reinforcement framework column integrated with UHPC (Ultra High Performance Concrete) formwork

Abstract

The utility model provides a formed steel reinforcement framework column integrated with a UHPC formwork. The formed steel reinforcement framework column comprises a steel reinforcement framework and the formwork. The formwork is arranged around the edge of the steel reinforcement framework to form a hollow cavity, and the cavity is used for cast-in-place concrete pouring; the steel reinforcement framework is formed by sequentially connecting longitudinal bars and stirrups, the longitudinal bars and the stirrups are arranged at an angle, the longitudinal bars are arranged on the inner edges of the stirrups, and the formwork wraps the edges of the stirrups and a part of the longitudinal bars; the other parts of the longitudinal bars extend out of the formwork and are used for being connected with other steel bar frameworks. The formwork is formed by pouring ultra-high performance concrete. According to the configuration, the formwork formed by pouring the ultra-high-performance concrete is additionally arranged, and the edge of the steel reinforcement framework is wrapped with the formwork, so that the formwork and the steel reinforcement framework can be prefabricated in a factory, and pouring in a construction site is not needed; meanwhile, concrete can be directly poured into the hollow cavity formed by the formwork shell, and the problems that high formwork erecting difficulty is large, and formwork dismounting wastes time and labor are solved.

Description

Technical Field

[0001] The utility model relates to the field of civil engineering construction, in particular to a formed steel bar skeleton column integrated with a UHPC formwork Background Art

[0002] The traditional column construction process is to first bind the column steel bar support at the set column position on site, then formwork and pour concrete, and finally remove the formwork to form. All the processes of the traditional process need to be completed on site, with complicated processes, long cycles, high formwork erection difficulty and time-consuming and laborious formwork removal. If there is decoration on the column surface, secondary interior decoration is also required to complete.

[0003] Based on this, how to simplify the on-site construction process and reduce the on-site construction difficulty has become a technical problem that needs to be solved by those skilled in the art. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a formed steel bar skeleton column integrated with a UHPC formwork to solve the problems of many on-site construction processes, long cycle, high formwork erection difficulty and time-consuming and laborious formwork removal in the prior art.

[0005] To achieve the above purpose, the utility model provides a formed steel bar skeleton column integrated with a UHPC formwork, including: a steel bar skeleton and a formwork;

[0006] The formwork is arranged around the edge of the steel bar skeleton to form a hollow cavity for pouring concrete on site;

[0007] The steel bar skeleton is formed by sequentially connecting longitudinal bars and stirrups. The longitudinal bars and the stirrups are arranged at an angle, and the longitudinal bars are arranged on the inner edge of the stirrups. The formwork covers the edge of the stirrups and a part of the longitudinal bars; the other part of the longitudinal bars extends out of the formwork for connection with other steel bar skeletons;

[0008] The formwork is formed by pouring ultra-high performance concrete.

[0009] Optionally, the longitudinal bars are connected to the edge of the stirrups and are arranged at intervals along the inner edge of the stirrups.

[0010] Optionally, the longitudinal bars are welded to the inner edge of the stirrups.

[0011] Optionally, the steel bar skeleton includes a plurality of the stirrups, and the plurality of stirrups are arranged at intervals along the extension direction of the longitudinal bars.

[0012] Optionally, the stirrups are arranged at the part where the longitudinal bars are connected to the formwork.

[0013] Optionally, the formwork covers the edge of the stirrup, and the frame of the formwork is adapted to the enclosed shape of the stirrup.

[0014] Optionally, a protective layer is provided between the outer wall of the formwork and the outer skin of the stirrup, and the thickness of the protective layer is the minimum distance between the outer wall of the formwork and the outer skin of the stirrup.

[0015] Optionally, the longitudinal reinforcement extends from one end of the formwork, or the longitudinal reinforcement extends from both ends of the formwork respectively.

[0016] Compared with the existing column construction methods, the formed steel bar skeleton column with an integrated UHPC formwork provided in this application has the following advantages:

[0017] The formed steel bar skeleton column with an integrated UHPC formwork provided in this application is provided with a formwork formed by casting ultra-high performance concrete, and the formwork is covered on the edge of the steel bar skeleton, so that the formwork and the steel bar skeleton can be prefabricated in the factory without the need for on-site casting. Moreover, due to the relatively large stiffness of the ultra-high performance concrete formwork and its covering on the outside of the steel bar skeleton, it can protect the steel bar skeleton from being damaged during transportation; at the same time, the hollow cavity formed by the formwork can be directly filled with concrete, and the formwork can be directly used as a formwork, avoiding problems such as high formwork support difficulty and time-consuming and laborious formwork removal; in addition, part of the steel bar skeleton is buried in the formwork, which can strengthen the stiffness of the formwork, enable the formwork to bear the lateral pressure of the cast concrete, and avoid formwork bulging and damage. At the same time, the formwork can also be used as the protective layer of the formed steel bar skeleton column and jointly bear the force with the concrete column core; the outer wall of the formwork can also be processed into the designed shape or texture during the factory prefabrication process, reducing the workload of secondary interior decoration of the column. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the steel bar skeleton provided by an embodiment of the present utility model;

[0019] Figure 2 is a schematic structural diagram of the formed steel bar skeleton with an integrated UHPC formwork provided by an embodiment of the present utility model;

[0020] Figure 3 is Figure 2 the sectional view taken along line A-A in

[0021] Figure 4 is Figure 2 the sectional view taken along line B-B in

[0022] Figure 5 is a flowchart of the construction method of the formed steel bar skeleton column with an integrated UHPC formwork provided by an embodiment of the present utility model;

[0023] Among them, the descriptions of the respective reference numerals are as follows:

[0024] 1 - Steel bar framework; 10 - Stirrup; 11 - Longitudinal bar; 2 - Formwork shell. Specific implementation manners

[0025] To make the objectives, advantages and features of the present utility model clearer, the following further details the present utility model in conjunction with the accompanying drawings and specific embodiments. It should be noted that the accompanying drawings are all in a very simplified form and not drawn to scale, and are only used to conveniently and clearly assist in explaining the objectives of the embodiments of the present utility model. In addition, the structures shown in the accompanying drawings are often part of the actual structures. In particular, the accompanying drawings need to show different emphases and sometimes use different scales.

[0026] As used in this specification, the singular forms "a", "an" and "the" include plural objects, the term "or" is generally used in the sense of including "and / or", the term "several" is generally used in the sense of including "at least one", the term "at least two" is generally used in the sense of including "two or more", in addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third" may explicitly or implicitly include one or at least two of such features. "One end" and "the other end" and "proximal end" and "distal end" generally refer to two corresponding parts, which not only include the endpoints. The terms "mounted", "connected", "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. In addition, as used in this specification, an element being disposed on another element generally only means that there is a connection, coupling, cooperation or transmission relationship between the two elements, and the two elements may be directly or indirectly connected, coupled, cooperated or transmitted through an intermediate element, and cannot be understood as indicating or implying the spatial position relationship between the two elements, that is, an element may be inside, outside, above, below or on one side of another element in any orientation, unless otherwise clearly specified in the content. The terms "upper", "lower", "top", "bottom" are generally relative position relationships arranged in the direction of gravity; the terms "vertical, vertical direction" generally refer to the direction along the gravity direction, which is generally perpendicular to the ground, and the "horizontal, horizontal plane direction" is generally along the direction parallel to the ground; for those of ordinary skill in the art, the specific meanings of the above terms in this specification can be understood according to specific circumstances.

[0027] The purpose of the present utility model is to provide a formed steel bar framework column integrated with UHPC formwork, so as to solve the problems of many on-site construction processes, long cycle, high formwork support difficulty, and time-consuming and laborious formwork removal in the prior art.

[0028] Please refer to Figures 1 to 2 , the present utility model provides a formed steel bar framework column integrated with UHPC formwork, including: a steel bar framework 1 and a formwork 2; the formwork 2 is arranged around the edge of the steel bar framework 1 to form a hollow cavity for casting concrete on site; the steel bar framework 1 is formed by sequentially connecting longitudinal bars 11 and stirrups 10, the longitudinal bars 11 and the stirrups 10 are arranged at an angle, and the longitudinal bars 11 are arranged at the edge of the stirrups 10, and the formwork 2 covers the edge of the stirrups 10 and a part of the longitudinal bars 11; the other part of the longitudinal bars 11 extends out of the formwork 2 for connecting with other steel bar frameworks 1; the formwork 2 is cast and formed by ultra-high performance concrete. Those skilled in the art can understand that UHPC (Ultra-High Performance Concrete) is an ultra-high strength cement-based material with high strength, high toughness, and low porosity. By improving the fineness and activity of the components and not using coarse aggregates, the defects (pores and microcracks) inside the material are minimized to obtain ultra-high strength and high durability. Compared with the existing construction method of columns, which requires binding the steel bar framework 1, supporting formwork, casting concrete, and removing formwork on the construction site, in this embodiment, the formwork 2 cast and formed by ultra-high performance concrete is arranged to cover the edge of the steel bar framework 1, so that the steel bar framework 1 and the formwork 2 can be prefabricated in the factory, simplifying the on-site construction process, reducing the cycle of casting concrete, and because the ultra-high performance concrete formwork 2 has high stiffness, covering it outside the steel bar framework 1 can protect the steel bar framework 1 from being damaged during transportation. At the same time, the hollow cavity formed by enclosing the formwork 2 can be used for casting concrete on site, directly using the formwork 2 as a mold, saving the on-site construction processes of supporting formwork and removing formwork, and further simplifying the on-site construction process. In addition, part of the steel bar framework 1 is buried in the formwork 2, which can enhance the stiffness of the formwork 2, enable the formwork 2 to bear the lateral pressure of the cast concrete, avoid formwork bulging and damage, and at the same time, the formwork 2 can also be used as a protective layer for the formed steel bar framework 1 column and jointly bear the force with the concrete column core.

[0029] In Figures 1 to 2In the illustrated exemplary embodiment, the longitudinal bars 11 and the stirrups 10 are arranged perpendicular to each other, and the framework of the steel bar cage 1 is square. Correspondingly, the hollow cavity formed by enclosing the formwork 2 is also a cuboid, and the steel bar cage 1 column formed by casting concrete on site is also a square column. In some other embodiments, the longitudinal bars 11 and the stirrups 10 can also be arranged at other angles, and the framework of the steel bar cage 1 can also be circular, oval or some other irregular shapes. Correspondingly, the shape of the formwork 2 can also be adapted to the shape of the framework of the steel bar cage 1. At the same time, since the steel bar cage 1 and the formwork 2 in this embodiment can be prefabricated and formed in the factory, a formwork 2 with a shape can be designed and manufactured in combination, such as a formwork cross-section with a curvature, and a matching shape or texture can be designed on the outer wall of the formwork 2, thereby reducing the workload of indoor secondary decoration.

[0030] In an alternative embodiment, the steel bar cage 1 includes a plurality of stirrups 10, and the plurality of stirrups 10 are arranged at intervals along the extending direction of the longitudinal bars 11. It should be noted that Figure 3 and Figure 4 In the illustrated exemplary embodiment, the stirrup 10 is in a mesh structure. In this embodiment, the stirrup is rectangular, and the rectangular dimensions of the plurality of stirrups 10 are the same. In some other embodiments, the dimensions of the enclosing shapes of the plurality of stirrups 10 can also be different, so that the formed steel bar cage 1 column presents a variable diameter structure. At the same time, the shapes of the plurality of stirrups 10 can also be different, so that the steel bar cage 1 column can present a personalized design.

[0031] Please continue to refer to Figures 3 to 4 , the longitudinal bars 11 are connected to the edges of the stirrups 10 and are arranged at intervals along the inner edge of the stirrups 10. Further, the longitudinal bars 11 are located inside the stirrups 10 (i.e., the inner edge in the above text). It should be noted that in this embodiment, the stirrups 10 enclose a rectangle, and six longitudinal bars 11 are arranged on each side of the rectangle, and the longitudinal bars 11 are connected to the inner side of the rectangular stirrups. In some other embodiments, the stirrups 10 can also enclose other shapes, and the longitudinal bars 11 can be evenly arranged along the edges of the stirrups. Those skilled in the art can configure this according to the actual situation.

[0032] In an alternative embodiment, the stirrup 10 is provided at the portion where the longitudinal reinforcement 11 is connected to the formwork 2. Further, the formwork 2 covers the edge of the stirrup 10, and the frame of the formwork 2 is adapted to the shape of the edge of the stirrup 10. Furthermore, a protective layer is provided between the outer wall of the formwork 2 and the outer skin of the stirrup 10, and the thickness of the protective layer is the minimum distance between the outer wall of the formwork 2 and the outer skin of the stirrup 10. It should be noted that in this embodiment, the stirrup 10 is only provided at the portion where the formwork 2 covers the longitudinal reinforcement 11, and no stirrup 10 is provided at the portion where the longitudinal reinforcement 11 extends out of the formwork 2, so as to facilitate the connection of the reinforcement cage 1 through the longitudinal reinforcement 11; at the same time, by burying the edge of the stirrup 10 and the longitudinal reinforcement 11 into the formwork 2, on the one hand, the formwork 2 can protect the edge of the stirrup 10 and the longitudinal reinforcement 11 from being damaged during transportation, and on the other hand, the stirrup 10 and the longitudinal reinforcement 11 also further strengthen the stiffness of the formwork 2, so that the formwork 2 can bear the lateral pressure of the poured concrete and avoid formwork bulging damage.

[0033] Please refer to Figures 1 to 4 , the longitudinal reinforcement 11 extends out from one end of the formwork 2, or, the longitudinal reinforcement 11 extends out from both ends of the formwork 2 respectively. In Figures 1 to 4 , the longitudinal reinforcement 11 extends out from both ends of the formwork 2 respectively and is used to be connected to the reinforcement cages 1 of two integrated UHPC formworks 2 respectively. The formworks 2 of the two connected reinforcement cages 1 are spliced in sequence. The two longitudinal reinforcements 11 can be connected by welding, or by sleeve connection, or by lap connection. Those skilled in the art can configure this according to the actual situation.

[0034] In another embodiment, please refer to Figure 5 , the present utility model also provides a construction method for a formed reinforcement cage column of an integrated UHPC formwork, using the formed reinforcement cage column of the integrated UHPC formwork as above, including:

[0035] Step S1: Prefabricate the reinforcement cage 1;

[0036] Step S2: Pour the formwork 2 with ultra-high performance concrete, and during the pouring process, make the formwork 2 cover the edge of the reinforcement cage 1;

[0037] Step S3: Transport to the construction site, hoist the reinforcement cage 1 integrated with the formwork 2, and connect the extended longitudinal reinforcements 11 in sequence;

[0038] Step S4: Pour concrete into the hollow cavity formed by the formwork 2 until the concrete solidifies and forms.

[0039] It should be noted that in step S1, the operator can prefabricate the reinforcement cage 1 with the corresponding shape based on the design drawing, Figures 1 to 4The cuboid steel bar framework 1 shown is only for illustrative purposes and should not be construed as a limitation on the shape of the steel bar framework 1 in this embodiment. The steel bar framework 1 in this embodiment can be cylindrical, frustum-shaped, multi-prismatic or other irregular shapes. Those skilled in the art can understand that the shape of the formwork 2 is adapted to the frame shape of the steel bar framework 1, and the frame shape of the steel bar framework 1 is adapted to the enclosing shape of the stirrups 10. Therefore, the enclosing shape of the stirrups 10 (i.e., the edge shape of the stirrups 10) directly determines the shape of the steel bar framework 1, and the shape of the steel bar framework 1 will determine the shape of the cast UHPC formwork 2, thus determining the outer frame shape of the finally formed steel bar framework 1 column. At the same time, the outer wall of the formwork 2 can also be processed into the designed shape or texture during the factory prefabrication process, reducing the workload of secondary interior decoration of the column.

[0040] With such a configuration, by prefabricating the steel bar framework 1 and covering the formwork 2 on the edge of the steel bar framework 1 during the process of forming the formwork 2, the construction procedures on site are simplified, the construction efficiency is improved and the construction period is reduced at the same time. Moreover, due to the large stiffness of the ultra-high performance concrete formwork 2 and it covering the outside of the steel bar framework 1, it can protect the steel bar framework 1 from being damaged during transportation; at the same time, the hollow cavity formed by the formwork 2 can be directly poured with concrete, and the formwork 2 can be directly used as a formwork, avoiding problems such as high formwork support difficulty and time-consuming and laborious formwork removal; in addition, part of the steel bar framework 1 is buried in the formwork 2, which can strengthen the stiffness of the formwork 2, enable the formwork 2 to bear the lateral pressure of the poured concrete, avoid formwork bulging and damage, and at the same time the formwork 2 can also be used as a protective layer for the formed steel bar framework 1 column and jointly bear the force with the concrete column core.

[0041] As an alternative embodiment, during the pouring process, covering the formwork 2 on the edge of the steel bar framework 1 includes:

[0042] Step S21: Press the steel bar framework 1 into the ultra-high performance concrete before the ultra-high performance concrete solidifies;

[0043] Step S22: When the ultra-high performance concrete reaches the demoulding strength, lift the steel bar framework 1 and the formwork 2, so that the formwork 2 covers a part of the edge of the steel bar framework 1;

[0044] Step S23: Repeat the above steps until the formwork 2 covers the edge of the steel bar framework 1.

[0045] It should be noted that, in Figures 1 to 4In the demonstration example, the steel bar framework 1 is a cuboid component. Therefore, when pouring ultra-high performance concrete, the four sides are usually poured step by step. After pouring the ultra-high performance concrete into the mold, one side of the steel bar framework 1 is pressed into the unhardened ultra-high performance concrete until the demolding strength is reached. Then, the steel bar framework 1 and the formed mold shell 2 are lifted. At this time, one side of the steel bar framework 1 has been covered by the mold shell 2. Repeat the above steps three times to obtain the steel bar framework 1 of the integrated UHPC mold shell 2 shown in Figure 2 Of course, in some other embodiments, the steel bar framework 1 is a component of other shapes. At this time, the steel bar framework 1 can also be pressed into the unhardened ultra-high performance concrete step by step until the outer frame of the steel bar framework 1 is completely covered by the mold shell 2.

[0046] In summary, in the formed steel bar framework column of the integrated UHPC mold shell provided in the embodiment of the present invention, it includes: a steel bar framework and a mold shell; the mold shell is arranged around the edge of the steel bar framework to form a hollow cavity for pouring concrete on site; the steel bar framework is formed by sequentially connecting longitudinal bars and stirrups. The longitudinal bars and the stirrups are arranged at an angle, and the longitudinal bars are arranged on the inner edge of the stirrups. The mold shell covers the edge of the stirrups and a part of the longitudinal bars; the other part of the longitudinal bars extends out of the mold shell for connecting with other steel bar frameworks; the mold shell is formed by pouring ultra-high performance concrete.

[0047] With such a configuration, by adding a mold shell formed by pouring ultra-high performance concrete and covering the edge of the steel bar framework with the mold shell, the mold shell and the steel bar framework can be prefabricated in the factory without the need for on-site pouring. And because the ultra-high performance concrete mold shell has greater stiffness and is covered outside the steel bar framework, it can protect the steel bar framework from being damaged during transportation; at the same time, the hollow cavity formed by the mold shell can directly pour concrete and use the mold shell directly as a formwork, avoiding problems such as high formwork support difficulty and time-consuming and laborious formwork removal; in addition, part of the steel bar framework is buried in the mold shell, which can strengthen the stiffness of the mold shell, enable the mold shell to bear the lateral pressure of the poured concrete, avoid formwork bulging and damage, and at the same time the mold shell can also be used as a protective layer for the formed steel bar framework column and jointly bear the force with the concrete column core; the outer wall of the mold shell can also be processed into a designed shape or texture during the prefabrication process in the factory, reducing the workload of secondary indoor decoration of the column.

[0048] The above description is only a description of the preferred embodiments of the present invention, and does not limit the scope of the present invention in any way. Any changes and modifications made by those of ordinary skill in the field of the present invention according to the above disclosure are within the scope of protection of the claims.

Claims

1. A formed steel skeleton column with integrated UHPC formwork, characterized in that: include: Steel reinforcement skeleton and formwork; The formwork is arranged around the edge of the steel frame to form a hollow cavity, and the cavity is used for pouring concrete on site; The steel bar skeleton is formed by connecting longitudinal bars and stirrups in sequence, the longitudinal bars are arranged at an angle to the stirrups, and the longitudinal bars are arranged at the inner edge of the stirrups, and the formwork covers the edge of the stirrups and a part of the longitudinal bars; another part of the longitudinal bars extends out of the formwork for connection with other steel bar skeletons; The formwork is cast by ultra-high performance concrete.

2. The UHPC formwork-integrated steel bar skeleton column according to claim 1, characterized in that: The longitudinal reinforcements are connected to the edges of the stirrups and are arranged at intervals along the inner edges of the stirrups.

3. The formed steel skeleton column with integrated UHPC formwork as claimed in claim 2, characterized in that: The longitudinal reinforcement is connected to the inner edge of the stirrup by welding.

4. The formed steel bar skeleton column with integrated UHPC formwork as claimed in claim 1, characterized in that: The steel bar skeleton comprises a plurality of stirrups, and the plurality of stirrups are arranged at intervals along the extending direction of the longitudinal bars.

5. The UHPC formwork-integrated steel bar skeleton column according to claim 4, characterized in that: The stirrups are arranged at the portion where the longitudinal reinforcement is connected to the formwork.

6. The UHPC formwork-integrated steel bar skeleton column according to claim 1, characterized in that: The formwork covers the edge of the stirrup, and the shape of the formwork is adapted to the enclosed shape of the stirrup.

7. The UHPC formwork-integrated steel bar skeleton column according to claim 6, characterized in that: A protective layer is left between the outer wall of the formwork and the outer skin of the stirrups, and the thickness of the protective layer is the minimum distance between the outer wall of the formwork and the outer skin of the stirrups.

8. The UHPC formwork-integrated steel bar skeleton column according to claim 1, characterized in that: The longitudinal ribs extend from one end of the formwork, or the longitudinal ribs extend from both ends of the formwork.

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