A tall arc column formwork structure and its construction method

Abstract

The present invention discloses a high and large arc column formwork structure and its construction method. The structure includes a plurality of column formwork components arranged vertically and closely. The column formwork component includes a first arc formwork and a second arc formwork fixedly connected by a tie rod; two adjacent column formwork components are connected by a plurality of adjusting components. The adjusting component includes an upper mounting base, a lower mounting base, a fastening screw and an adjusting bolt; horizontal support components are further arranged on both sides of the column formwork component. The horizontal support component includes a support base, a vertical support rod, a horizontal support rod and an extrusion member; the method includes bottom column formwork construction, column formwork component splicing and upper end column formwork construction. The structure can be used for the construction of high and large arc columns, which not only ensures the coaxiality of the whole column, but also effectively prevents the formwork bulging phenomenon, is convenient for construction operation, the overall structure is simple and compact, and has strong practicability.

Description

Technical Field

[0001] The present invention relates to the technical field of column formwork construction, and particularly relates to a tall arc column formwork structure and a construction method thereof. Background Art

[0002] In building construction, during the construction process of concrete pouring operation for vertical columns, a formwork system needs to be erected. The formwork system usually consists of multiple formwork panels and support members arranged around the formwork. The multiple formwork panels are spliced through the support framework and then the pouring operation is carried out. However, during the pouring process of columns with relatively large cross-sectional dimensions and heights, due to a large amount of concrete poured, the formwork at the bottom is prone to formwork bulging or bursting, which affects the construction. Currently, for the construction of such tall columns, segmented construction is usually carried out, that is, the vertical column to be constructed is divided into multiple segments vertically, and the construction is carried out successively from bottom to top. After the construction of one segment is completed, the formwork is removed, and then vertical and horizontal support structures are erected, and the upper formwork is erected on the support structure and on the column that has been constructed. The construction is carried out layer by layer. This method can prevent the formwork bulging phenomenon, but the erected support structure is time-consuming and laborious, and the coaxiality of the segmented poured columns is relatively poor, and the overall construction quality is poor. Summary of the Invention

[0003] The object of the present invention is to provide a tall arc column formwork structure and a construction method thereof. This structure can be used for the construction of tall arc columns, which not only ensures the coaxiality of the entire column, but also effectively prevents the formwork bulging phenomenon, is convenient for construction operation, and the overall structure is simple and compact, with strong practicability.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A tall arc column formwork structure includes a plurality of column formwork components arranged vertically and closely. The column formwork component includes a first arc formwork and a second arc formwork fixedly connected by a tie rod. After the first arc formwork and the second arc formwork are connected, a pouring space is formed; adjacent two column formwork components are connected by a plurality of adjusting components. The adjusting component includes an upper mounting base, a lower mounting base, a fastening screw, and an adjusting bolt. The upper mounting base and the lower mounting base are fixedly installed on two vertically adjacent first arc formworks or second arc formworks correspondingly. One end of the fastening screw is fixedly installed on the upper mounting base, and the other end of the fastening screw passes through the lower mounting base. The adjusting bolt is threadedly connected to the lower mounting base; horizontal support components are further arranged on both sides of the column formwork component. The horizontal support component includes a support base, vertical support rods arranged on both sides of the support base, horizontal support rods arranged between the vertical support rods, and a plurality of pressing members arranged between the vertical support rods. The inner sides of the plurality of pressing members are respectively pressed and installed on the first arc formwork and the second arc formwork.

[0006] Preferably, a seal is provided between two vertically connected column formwork assemblies.

[0007] Preferably, two sets of the adjusting assemblies are provided on the first arc-shaped formwork, and two sets of the adjusting assemblies are also provided on the second arc-shaped formwork.

[0008] Preferably, two vertical support rods are respectively provided on both sides of the support base, and a reinforcing support rod is fixedly provided between the two vertical support rods on one side in the width direction of the support base.

[0009] Preferably, an arc-shaped extrusion plate is provided at the inner end of the extrusion member, and the radian of the arc-shaped extrusion plate is adapted to the surface radian of the first arc-shaped formwork or the second arc-shaped formwork.

[0010] Preferably, the horizontal support rod is an adjusting screw rod, and both ends of the adjusting screw rod respectively pass through the vertical support rods on both sides, and the nut on the adjusting screw rod is adjusted to adjust the extrusion force of the extrusion member on the column formwork assembly.

[0011] A construction method for a tall arc-shaped column formwork structure, the construction method comprising the following steps:

[0012] Step 1, bottom column formwork construction: First, fix the bottom column formwork assembly according to the construction position, and then layer by layer splice upward. To prevent the formwork from bulging, the overall stiffness of the column formwork assembly does not exceed 5 m during each pouring. After the column formwork assembly is built, concrete is poured.

[0013] Step 2, column formwork assembly splicing: After the concrete poured in Step 1 reaches the preset value, remove the bottom column formwork assembly, but keep the top set of column formwork assembly for use as the vertical support for the column formwork assembly to be built on the upper layer. The bottom of the column formwork assembly to be built on the upper layer is adjusted and fixedly connected to the column formwork assembly not removed at the bottom layer through the adjusting assembly to ensure the coaxiality of the columns poured twice.

[0014] Step 3, upper column formwork construction: After Step 2 is completed, layer by layer splice the column formwork assembly upward, then build the horizontal support assembly, use the extrusion member in the horizontal support assembly to inwardly extrude the column formwork assembly to prevent the formwork from bulging, and finally pour concrete; after the concrete poured in this layer reaches the preset value, continue to construct upward in the order of Step 2 and Step 3 until the construction of the entire column is completed.

[0015] In the present invention, an adjusting component is provided between the column formwork components constructed in two successive vertical sections. On the one hand, the adjusting component can adjust the radial direction of the column formwork components constructed in two sections to ensure the coaxiality of the sectional construction. On the other hand, it can also vertically and firmly connect the two-layer column formwork components, improving the stability and safety of the overall structure and preventing the formwork bulging phenomenon. The provided horizontal support component can horizontally support the upper column formwork component, enhancing the safety during the pouring operation. During the construction process, the columns are constructed in sections to prevent the formwork from bursting due to excessive pressure caused by integral pouring. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 is an enlarged schematic diagram of a partial structure of the present invention;

[0018] In the figure: 1, column formwork component; 2, adjusting component; 3, horizontal support component; 10, tie rod; 11, first arc-shaped template; 12, second arc-shaped template; 20, upper mounting base; 21, lower mounting base; 22, fastening screw; 23, adjusting bolt; 30, support base; 31, vertical support rod; 32, horizontal support rod; 33, extrusion member; 34, strengthening support rod; 35, arc-shaped extrusion plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The present invention will be further described below with reference to the accompanying drawings:

[0020] As Figure 1 and Figure 2 shown, a tall arc-shaped column formwork structure includes a plurality of column formwork components 1 arranged vertically and closely. The column formwork component 1 includes a first arc-shaped template 11 and a second arc-shaped template 12 fixedly connected by a tie rod 10. After the first arc-shaped template 11 and the second arc-shaped template 12 are fixedly connected, a pouring space for the column is formed. In this embodiment, the first arc-shaped template 11 and the second arc-shaped template 12 are semi-circular structures with the same cross-sectional shape. The connection between the first arc-shaped template 11 and the second arc-shaped template 12 is fixedly connected by bolts. Both ends of the tie rod 10 pass through the first arc-shaped template 11 and the second arc-shaped template 12 respectively and are fastened by nuts. In one embodiment, a sealing member is provided between two vertically connected column formwork components 1, which can improve the tightness of the connection and prevent the slurry leakage phenomenon. In a preferred embodiment, stirrups can also be provided outside the column formwork component 1 to prevent the formwork bulging phenomenon.

[0021] Vertically arranged, two adjacent column formwork components 1 are connected by a plurality of adjusting components 2. The adjusting component 2 includes an upper mounting base 20, a lower mounting base 21, a fastening screw 22 and an adjusting bolt 23. The upper mounting base 20 and the lower mounting base 21 are fixedly installed on two vertically adjacent first arc-shaped templates 11 or second arc-shaped templates 12 correspondingly. One end of the fastening screw 22 is fixedly installed at the bottom of the upper mounting base 20 by welding. A waist-shaped groove is formed in the lower mounting base 21. The other end of the fastening screw 22 passes through the waist-shaped groove of the lower mounting base 21. Using nuts can improve the vertical connection force between two adjacent column formwork components 1. The adjusting bolt 23 is threadedly connected to the lower mounting base 21. The adjusting bolt 23 abuts against the first arc-shaped template 11 or the second arc-shaped template 12 of the upper layer to adjust the coaxiality of two layers of column formwork components 1. In one embodiment, two groups of adjusting components 2 are fixedly arranged on the first arc-shaped template 11, and two groups of adjusting components 2 are also fixedly arranged on the second arc-shaped template 12.

[0022] Horizontal support components 3 are also arranged on both sides of the column formwork component 1. The horizontal support component 3 includes a support base 30, vertical support rods 31 fixedly arranged on both sides of the support base 30, a horizontal support rod 32 arranged between the vertical support rods 31 and a plurality of pressing members 33 arranged between the vertical support rods 31. The inner sides of the plurality of pressing members 33 are respectively pressed and installed on the first arc-shaped template 11 and the second arc-shaped template 22. The support base 30 is fixedly installed on the ground. In one embodiment, two vertical support rods 31 are respectively arranged at both ends of both sides of the support base 30. A reinforcing support rod 34 is fixedly arranged between the two vertical support rods 31 on one side in the width direction of the support base 30. Specifically, the horizontal support rod 32 is an adjusting screw. The two ends of the adjusting screw respectively pass through the vertical support rods 31 on both sides. By adjusting the nuts on the adjusting screw, the pressing force of the pressing member 33 on the column formwork component 1 can be adjusted. In a preferred embodiment, an arc pressing plate 35 is fixedly arranged at the inner end of the pressing member 33. The radian of the arc pressing plate 35 is adapted to the radian of the outer surface of the first arc-shaped template 11 or the second arc-shaped template 12. Specifically, two or three pressing members 33 are arranged on one first arc-shaped template 11 or the second arc-shaped template 12.

[0023] As Figure 1 and Figure 2 shown, a construction method of a high and large arc column formwork structure, the construction method includes the following steps:

[0024] Step 1: Construction of the bottom column formwork. First, fix the column formwork components 1 at the bottom according to the construction position. Fasten and connect the two first arc-shaped templates 11 and the second arc-shaped template 12 with multiple tie bolts 10. After fixation, splice them layer by layer upward. To prevent formwork bulging, the overall stiffness of the vertically spliced column formwork components 1 does not exceed 5 m during each pouring. After the column formwork components 1 are erected, concrete pouring is carried out. In this embodiment, the overall height of the column to be poured is 9 m, and it is poured in two sections, with each pouring height being 4.5 m.

[0025] Step 2: Splicing of the column formwork components. After the concrete poured in Step 1 reaches the preset value, remove the bottom column formwork components 1, but keep the topmost set of column formwork components 1 erected in the first time as the vertical support for the column formwork components 1 to be erected on the upper layer. When removing, cut and remove the part of the tie bolt 10 located outside the column. The bottom of the column formwork components 1 to be erected on the upper layer is adjusted and fixedly connected to the column formwork components 1 not removed at the bottom through the adjusting components 2 to ensure the coaxiality of the columns at both ends of the two pourings. During adjustment, adjust the four groups of adjusting components 2 simultaneously to ensure the coaxiality of the columns at both ends of the two pourings.

[0026] Step 3: Construction of the upper column formwork. After Step 2 is completed, splice the column formwork components 1 layer by layer upward, and then erect the horizontal support components 3. Prevent formwork bulging by using the extrusion parts 33 in the horizontal support components 3 to extrude the column formwork components 1 inward. Specifically, adjust the horizontal support rods 32 to make the extrusion parts 33 extrude the column formwork components 1 inward to increase the extrusion force. After installation, concrete pouring is carried out. After the concrete strength of this layer reaches the preset value, continue the upward construction in the order of Step 2 and Step 3 until the construction of the entire column is completed. In this embodiment, the entire column is constructed in two sections. Of course, it can also be constructed in multiple sections according to the actual situation.

[0027] The above embodiments are only several descriptions of the concept and implementation of the present invention, and do not limit it. Under the concept of the present invention, the technical solutions without substantial transformation are still within the protection scope.

Claims

1. A tall arc-shaped column formwork structure, characterized in that: it includes a plurality of column formwork components (1) arranged vertically and closely. The column formwork component (1) includes a first arc-shaped formwork (11) and a second arc-shaped formwork (12) fixedly connected by a tie rod (10). After the first arc-shaped formwork (11) and the second arc-shaped formwork (12) are connected, a pouring space is formed; vertically arranged, two adjacent column formwork components (1) are connected by a plurality of adjusting components (2). The adjusting component (2) includes an upper mounting base (20), a lower mounting base (21), a fastening screw (22) and an adjusting bolt (23). The upper mounting base (20) and the lower mounting base (21) are correspondingly fixedly installed on two vertically adjacent first arc-shaped formworks (11) or second arc-shaped formworks (12). One end of the fastening screw (22) is fixedly installed at the bottom of the upper mounting base (20) by welding. A waist-shaped groove is formed in the lower mounting base (21). The other end of the fastening screw (22) passes through the waist-shaped groove of the lower mounting base (21). The adjusting bolt (23) is threadedly connected to the lower mounting base (21), and the adjusting bolt (23) abuts against the first arc-shaped formwork (11) or the second arc-shaped formwork (12) of the upper layer to adjust the coaxiality of the two layers of column formwork components (1); on both sides of the column formwork component (1), a horizontal support component (3) is further provided. The horizontal support component (3) includes a support base (30), vertical support rods (31) arranged on both sides of the support base (30), a horizontal support rod (32) arranged between the vertical support rods (31) and a plurality of pressing members (33) arranged between the vertical support rods (31). The inner sides of the plurality of pressing members (33) are respectively pressed and installed on the first arc-shaped formwork (11) and the second arc-shaped formwork (12); the horizontal support rod (32) is an adjusting screw. The two ends of the adjusting screw respectively pass through the vertical support rods (31) on both sides, and the nut located on the adjusting screw is adjusted to adjust the pressing force of the pressing member (33) on the column formwork component (1).

2. The tall arc-shaped column formwork structure according to claim 1, characterized in that: a sealing member is arranged between two vertically connected column formwork components (1).

3. The tall arc-shaped column formwork structure according to claim 1, characterized in that: two groups of the adjusting components (2) are arranged on the first arc-shaped formwork (11), and two groups of the adjusting components (2) are also arranged on the second arc-shaped formwork (12).

4. The tall arc-shaped column formwork structure according to claim 1, characterized in that: two vertical support rods (31) are respectively arranged on both sides of the support base (30), and a reinforcing support rod (34) is fixedly arranged between the two vertical support rods (31) on one side in the width direction of the support base (30).

5. The tall arc-shaped column formwork structure according to any one of claims 1 to 4, characterized in that: An arc-shaped extrusion plate (35) is provided at the inner end of the extrusion part (33), and the radian of the arc-shaped extrusion plate (35) is adapted to the surface radian of the first arc-shaped template (11) or the second arc-shaped template (12).

6. A construction method for the high and large arc-shaped column formwork structure according to any one of claims 1 to 5, characterized in that: the construction method comprises the following steps: Step 1, bottom column formwork construction. First, fix the bottom column formwork assembly (1) according to the construction position, and then splice layer by layer upward. To prevent formwork bulging, the overall height of the column formwork assembly (1) does not exceed 5 m during each pouring. After the column formwork assembly (1) is built, concrete pouring is carried out; Step 2, splicing of the column formwork assembly (1). After the concrete poured in Step 1 reaches the preset value, remove the bottom column formwork assembly (1), but keep the uppermost set of column formwork assemblies (1) for use as the vertical support of the column formwork assembly (1) to be built on the upper layer. The bottom of the column formwork assembly (1) to be built on the upper layer is adjusted and fixedly connected to the column formwork assembly (1) that is not removed at the bottom layer through the adjusting assembly (2) to ensure the coaxiality of the columns poured twice; Step 3, upper column formwork construction. After Step 2 is completed, splice the column formwork assembly (1) layer by layer upward, and then build the horizontal support assembly (3). Use the extrusion part (33) in the horizontal support assembly (3) to extrude the column formwork assembly (1) inward to prevent formwork bulging, and finally carry out concrete pouring; after the concrete poured in this layer reaches the preset value, continue to construct upward in the order of Step 2 and Step 3 until the construction of the entire column is completed.

Images