Construction method of sunken cup mouth column foundation platform

Abstract

The application provides a sinking cup mouth column foundation platform construction method, which comprises the following steps: installing a concrete support device on a platform concrete reinforcing bar to form an inner support formwork; pouring concrete to the top surface of the platform to complete the one-time pouring of the sinking cup mouth foundation platform; and disassembling the concrete support device to complete the pouring of the sinking cup mouth foundation platform. The concrete support device is installed on the platform concrete reinforcing bar to form the inner support formwork, which can cooperate with the platform formwork to pour the concrete, so that the sinking cup mouth foundation platform is poured once, that is, the pouring is realized in one stage. Compared with the two-stage pouring in the prior art, the construction period is saved, and the problem of the three-time pouring of the sinking cup mouth column foundation platform concrete in the prior art is solved, and the construction speed is improved.

Description

Technical Field

[0001] This invention relates to the field of industrial plant column foundation construction technology, and more specifically, to a method for constructing a sunken cup-shaped column foundation cap. Background Technology

[0002] With social development and continuous updates in building technology, steel structures have advantages such as high steel strength, small component area, good seismic performance, light weight, low cost, high degree of industrialization in production and manufacturing, and fast installation. Therefore, steel structure engineering is widely used in industrial plants, and the column foundations of industrial plants are usually set as cup-shaped foundations.

[0003] Cup-shaped foundations are commonly used in steel structure workshops. These foundations consist of a pile cap and a cup-shaped base. The depth of the cup-shaped base is determined by the insertion depth of the steel columns in the workshop. The minimum insertion depth of a solid-web steel column into the concrete foundation cup-shaped base is determined using a formula during design. Typically, the bottom elevation of the cup-shaped base and the top elevation of the pile cap are designed to be at the same elevation, i.e., on the same plane. However, special circumstances may arise in engineering design, such as design optimization, changes in geological conditions, and the depth of equipment foundations. Figure 1 As shown, the bottom elevation of the cup mouth 1' is lower than the top surface elevation of the foundation 2' (the distance is about 100mm-200mm), which will cause inconvenience to the construction of the foundation.

[0004] Currently, for sunken independent cup-shaped column foundations where the bottom elevation of the cup 1' is lower than the top elevation of the foundation 2', traditional construction requires three stages of concrete pouring. The first stage involves pouring concrete to the bottom elevation of the cup; once the concrete strength reaches the specified value, the formwork is adjusted; the second stage involves pouring concrete to the top surface of the foundation; once the concrete strength reaches the specified value, the cup formwork is installed; and the third stage involves pouring concrete to the top elevation of the cup, completing the construction. Compared to non-sunken cup-shaped foundations, this adds a second construction stage, slowing down the construction speed and hindering schedule control. Summary of the Invention

[0005] In view of this, the present invention proposes a construction method for a sunken cup-shaped column foundation cap, which aims to solve the problem that the existing sunken cup-shaped column foundation cap concrete pouring method, which involves three pours, reduces the construction speed.

[0006] This invention proposes a construction method for a sunken cup-shaped column foundation cap, which includes the following steps: installing a concrete support device on the concrete reinforcement of the cap to form an internal support formwork; pouring concrete up to the top surface of the cap, so that the sunken cup-shaped foundation cap is poured in one go; and disassembling the concrete support device to complete the pouring of the sunken cup-shaped foundation cap.

[0007] Furthermore, the above-mentioned construction method for the sunken cup-shaped column foundation includes the following steps before installing the concrete support device on the concrete reinforcement of the foundation: fabricating the concrete support device based on the inner wall of the outer cup and the sunken height of the cup.

[0008] Furthermore, in the above-mentioned construction method for the sunken cup-shaped column foundation, the fabrication of the concrete support device includes the following sub-steps: selecting a suitable angle steel based on the sunken height of the cup; cutting the selected angle steel to obtain four sunken support members that are compatible with the inner wall of the outer cup based on the inner wall of the outer cup; and connecting the four sunken support members end to end to form an inner support template.

[0009] Furthermore, in the above-mentioned construction method for the sunken cup-shaped column foundation, during the process of cutting the selected angle steel to obtain four sunken support members that are adapted to the inner wall of the outer cup, based on the inner wall of the outer cup, the angle steel is cut to obtain four reinforcement members; during the process of connecting the four sunken support members end to end to form an inner support template, the four reinforcement members are respectively installed at the four corners inside the inner support template, and the two ends of the reinforcement members are respectively connected to two sunken support members.

[0010] Furthermore, in the above-mentioned construction method for the sunken cup-shaped column foundation, the first side of the angle steel serves as the bottom support plate of the sunken support to control the bottom elevation of the cup, and the second side of the angle steel serves as the vertical control plate of the sunken support to control the sunken height of the cup.

[0011] Furthermore, in the above-mentioned construction method for the sunken cup-shaped column foundation, the concrete is poured in multiple stages during the process of pouring concrete to the top surface of the foundation, with one stage pouring to the bottom mark of the cup and the last stage pouring to the top surface of the foundation.

[0012] Furthermore, the above-mentioned construction method for the sunken cup-shaped column foundation cap includes the following steps after the sunken cup-shaped foundation cap is poured: after the concrete at the sunken cup-shaped foundation cap reaches the preset strength, the cup-shaped formwork is installed on the sunken cup-shaped foundation cap, and concrete is poured to carry out the pouring of concrete above the cap.

[0013] Furthermore, in the above-mentioned construction method for the sunken cup-shaped column foundation, in the step of installing the concrete support device on the concrete reinforcement of the foundation, the concrete support device is fixedly installed on the concrete reinforcement of the foundation by binding.

[0014] The present invention provides a construction method for a sunken cup-shaped column foundation cap. A concrete support device is installed on the concrete reinforcement of the cap to form an internal support formwork. This formwork, in conjunction with the cap formwork, allows for concrete pouring, enabling the sunken cup-shaped foundation cap to be poured in one stage. Compared to the existing two-stage pouring method, this saves construction time and solves the problem of reduced construction speed caused by the three-stage pouring method in existing sunken cup-shaped column foundation caps. Furthermore, the concrete support device, replacing the suspended formwork, ensures the construction quality of the cup-shaped foundation and reduces rework. In addition, the device is easy to implement, reusable, and has low construction costs. Attached Figure Description

[0015] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 A schematic diagram of a sunken, independent cup-shaped column foundation; Figure 2 A flowchart illustrating the construction method of the sunken cup-shaped column foundation cap provided in an embodiment of the present invention; Figure 3 This is a structural schematic diagram of a concrete support device for a sunken cup mouth provided in an embodiment of the present invention; Figure 4 A schematic diagram of the concrete support device for a sunken cup mouth provided in an embodiment of the present invention in use; Figure 5 This is another flowchart illustrating the construction method of the sunken cup-shaped column foundation cap provided in the embodiments of the present invention; Figure 6 This is a flowchart illustrating the fabrication of a concrete support device according to an embodiment of the present invention. Figure 7 This is another flowchart illustrating the construction method of the sunken cup-shaped column foundation cap provided in the embodiments of the present invention. Detailed Implementation

[0016] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0017] See Figure 2 This is a flowchart illustrating the construction method for a sunken cup-shaped column foundation cap provided in an embodiment of the present invention. As shown in the figure, the construction method includes the following steps: Step S1: Install the concrete support device on the concrete reinforcement of the foundation to form the internal support formwork.

[0018] Specifically, the concrete support device is fixed to the reinforced concrete of the foundation by tying and securing it, thus forming an internal support formwork. For example, Figure 3 As shown, the concrete support device may include: four sinking support members 1; wherein, the four sinking support members 1 are connected end to end to form an inner support template, which is used to control the sinking height of the cup mouth.

[0019] Specifically, four sinking support members 1 are connected end to end to form an inner support template. Concrete support is provided at the sinking position of the cup opening, so that concrete is poured between the inner support template and the outer template of the foundation platform to form a ring structure at the sinking height of the cup opening. In this embodiment, any two adjacent sinking support members 1 are perpendicular to each other to form a rectangular structure, which is adapted to the inner wall of the outer cup opening to form the sinking structure. Any two adjacent sinking support members 1 can be connected by welding; of course, other methods of fixation are also possible, and this embodiment does not impose any limitations on these methods.

[0020] See also Figure 3 To improve the stability of the connection between the sinking support members 1, preferably, a reinforcing member 2 is provided between any two adjacent sinking support members 1. Specifically, the reinforcing member 2 can be obliquely arranged between two adjacent sinking support members 1, with both ends connected to the two adjacent sinking support members 1 respectively, forming a diagonal bracing structure to reinforce the connection between the two adjacent sinking support members 1. The reinforcing member 2 can be an angle steel structure, or other structures, which are not limited in this embodiment. In this embodiment, the reinforcing member 2 and the sinking support member 1 can be connected by welding, or other methods of fixation, which are not limited in this embodiment.

[0021] See also Figures 3 to 4 Each sinking support 1 includes: a bottom support plate 11 and a vertical control plate 12; wherein, the bottom support plate 11 is used to control the bottom elevation of the cup mouth; the vertical control plate 12 is set at an angle to the bottom support plate 11, and the bottom wall of the vertical control plate 12 (relative to the bottom elevation of the cup mouth) is set at an angle to the bottom support plate 11. Figure 4The vertical control plate 12 (located as shown) is connected to the side of the bottom support plate 11 to control the sinking height of the cup rim. Specifically, the width of the vertical control plate 12 can be adapted to the sinking height of the cup rim to achieve control of the sinking height. The four bottom support plates 11 of the four sinking support members 1 form a ring structure, especially a rectangular ring structure; the four vertical control plates 12 of the four sinking support members 1 are arranged along the outer edge of the bottom support plate 11 to fit against the inner wall of the outer cup rim to achieve control of the sinking height of the cup rim. In this embodiment, the vertical control plate 12 is arranged perpendicularly to the bottom support plate 11. The sinking support member 1 can be an angle steel or other structures, and no limitation is made in this embodiment.

[0022] Step S2: Pour concrete up to the top surface of the foundation, so that the sunken cup-shaped foundation foundation is poured in one go.

[0023] Specifically, the concrete can be poured in multiple stages, with one stage reaching... Figure 4 The cup bottom elevation AA shown is the final pouring point. Figure 4 At point BB on the top surface of the foundation shown, the sunken cup-shaped foundation foundation is poured in one go, marking the end of construction. This "one-time pour" refers to a single stage of pouring, meaning no adjustments to formwork or other components are made in between. After each pour, a preset time interval is maintained before the next pour to allow the concrete to dry, ensuring that the next pour is placed on top of the previously dried concrete.

[0024] Step S3: Disassemble the concrete support device and complete the pouring of the sunken cup-shaped foundation platform.

[0025] Specifically, the entire concrete support structure is disassembled for the next foundation construction, allowing for reuse.

[0026] See Figure 5 This is another flowchart illustrating the construction method for the sunken cup-shaped column foundation cap provided in this embodiment of the invention. As shown in the figure, the construction method includes the following steps: Step S4: Based on the inner wall of the outer cup opening and the sinking height of the cup opening, construct a concrete support device.

[0027] Specifically, based on the gears on the inner wall of the outer cup opening and the sinking height of the cup opening, a concrete support device is made using angle steel.

[0028] Step S1: Install the concrete support device on the concrete reinforcement of the foundation to form the internal support formwork.

[0029] Step S2: Pour concrete up to the top surface of the foundation, so that the sunken cup-shaped foundation foundation is poured in one go.

[0030] Step S3: Disassemble the concrete support device and complete the pouring of the sunken cup-shaped foundation platform.

[0031] See Figure 6 This is a flowchart illustrating the fabrication of a concrete support device according to an embodiment of the present invention. As shown in the figure, step S2 includes the following sub-steps: Sub-step S21: Select a suitable angle steel based on the sinking height of the cup opening.

[0032] Specifically, based on the sinking height of the cup rim, an angle steel with a side plate width that matches the sinking height of the cup rim is selected. For example, if the sinking height H of the cup rim is 100 mm, the width of one side of the selected angle steel is 100 mm. This side serves as the second side of the angle steel and acts as the vertical control plate 12 of the sinking support 1 to control the sinking height of the cup rim.

[0033] In sub-step S22, based on the inner wall of the outer cup opening, the selected angle steel is cut to obtain four sinking support members that are adapted to the inner wall of the outer cup opening.

[0034] Specifically, based on the inner wall dimensions of the outer cup opening, for example, an inner wall of 900mm*600mm, the selected angle steel is cut to obtain four recessed support members 1 that fit the inner wall of the outer cup opening. That is, the angle steel selected in sub-step S21 is cut to obtain two recessed support members 1 with a length of 900mm and two recessed support members 1 with a length of 600mm. During the cutting process, the angle steel can also be cut to obtain four reinforcing members 2. The length of the reinforcing members 2 can be determined according to the actual situation, and no limitation is made on it in this embodiment.

[0035] Sub-step S23: Connect the four sinking support members end to end to form an inner support template.

[0036] Specifically, four recessed support members 1 are arranged to form a rectangular structure of 900mm*600mm, with a 100mm wide side vertically positioned. Four reinforcing members 2 can also be installed at the four internal corners of the inner support template, with both ends of the reinforcing members 2 connected to two recessed support members 1 respectively. Any two adjacent recessed support members 1 can be connected by welding, and the reinforcing members 2 can be connected to the recessed support members 1 by welding. Of course, other methods of fixation are also possible, and this embodiment does not impose any limitations on them.

[0037] See Figure 7 This is another flowchart illustrating the construction method for the sunken cup-shaped column foundation cap provided in this embodiment of the invention. As shown in the figure, the construction method includes the following steps: Step S4: Based on the inner wall of the outer cup opening and the sinking height of the cup opening, construct a concrete support device.

[0038] Step S1: Install the concrete support device on the concrete reinforcement of the foundation to form the internal support formwork.

[0039] Step S2: Pour concrete up to the top surface of the foundation, so that the sunken cup-shaped foundation foundation is poured in one go.

[0040] Step S3: Disassemble the concrete support device and complete the pouring of the sunken cup-shaped foundation platform.

[0041] Step S5: After the concrete at the sunken cup-shaped foundation platform reaches the preset strength, install the cup-shaped formwork on the sunken cup-shaped foundation platform and pour concrete to pour the concrete above the platform.

[0042] In summary, the construction method for the sunken cup-shaped column foundation provided in this embodiment uses a concrete support device installed on the concrete reinforcement of the foundation to form an internal support formwork. This formwork, in conjunction with the foundation formwork, allows for concrete pouring, enabling the sunken cup-shaped foundation to be poured in one stage. Compared to the existing two-stage pouring method, this saves construction time and solves the problem of reduced construction speed caused by the three-stage pouring method in existing sunken cup-shaped column foundations. Furthermore, the concrete support device, replacing the suspended formwork, ensures the construction quality of the cup-shaped foundation and reduces rework. In addition, the device is easy to implement, reusable, and has low construction costs.

[0043] It should be noted that in the description of this invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc., which indicate directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and is not intended to indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this invention.

[0044] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0045] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A construction method for a sunken cup-shaped column foundation cap, characterized in that, Includes the following steps: The concrete support device is installed on the concrete reinforcement of the foundation to form an internal support formwork; Pour concrete up to the top surface of the foundation, so that the sunken cup-shaped foundation foundation can be poured in one go. Dismantle the concrete support device and complete the pouring of the sunken cup-shaped foundation platform; Before installing the concrete support device onto the reinforced concrete foundation, the following steps are also included: Based on the inner wall of the outer cup opening and the sinking height of the cup opening, a concrete support device is constructed. The fabrication of the concrete support device includes the following sub-steps: Select the appropriate angle steel based on the depth of the cup opening; Based on the inner wall of the outer cup opening, the selected angle steel is cut to obtain four sinking support members that are adapted to the inner wall of the outer cup opening; Connect the four sinking support components end to end to form an inner support template; In the process of cutting the selected angle steel to obtain four sinking support members that are adapted to the inner wall of the outer cup, based on the inner wall of the outer cup, the angle steel is cut to obtain four reinforcement members; During the process of connecting the four sinking support members end to end to form the inner support template, the four reinforcing members are respectively installed at the four corners inside the inner support template, and the two ends of the reinforcing members are respectively connected to the two sinking support members. The first side of the angle steel serves as the bottom support plate of the sinking support to control the bottom elevation of the cup opening, and the second side of the angle steel serves as the vertical control plate of the sinking support to control the sinking height of the cup opening. During the process of pouring concrete to the top surface of the foundation, the concrete is poured in multiple stages, with one stage pouring to the bottom mark of the cup and the last stage pouring to the top surface of the foundation. After the casting of the sunken cup-shaped foundation cap is completed, the following steps are also included: After the concrete at the sunken cup-shaped foundation platform reaches the preset strength, the cup-shaped formwork is installed on the sunken cup-shaped foundation platform, and concrete is poured to carry out the pouring of concrete above the platform. In the process of installing the concrete support device on the concrete reinforcement of the foundation, the concrete support device is fixedly installed on the concrete reinforcement of the foundation by binding.

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