Stand special-shaped A column and multi-curvature ring beam construction method

Abstract

The invention belongs to the technical field of building construction, and discloses a stand special-shaped A column and multi-curvature ring beam construction method.The special-shaped A column comprises a stand column, an inclined column and an upper structure, and the construction method comprises the following steps that S3, a supporting frame is erected in the area, located between the stand column and the inclined column, of a floor plate; comprising the steps that a plurality of first inclined struts are obliquely supported between a floor plate and an inclined column formwork; a plurality of first vertical rods are vertically supported between the floor plate and the inclined column formwork; and a plurality of second vertical rods are vertically supported between the floor plate and the special-shaped template. According to the supporting device, the first inclined struts, the second inclined struts, the first vertical rods and the second vertical rods are adopted, the supporting device can be stably supported between the stand column and the inclined column, stable supporting force can be provided, the cushion frame is supported, the second vertical rods are used for supporting the cushion frame so that the special-shaped formwork can be supported, and the supporting effect on the special-shaped formwork can be greatly improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of building construction, and particularly relates to a construction method for a special-shaped A-column and a multi-curvature ring beam of a grandstand. Background Technique

[0002] With the prosperous development of the economy, the construction of public buildings has entered a new stage. Especially, with the increasing demand for public buildings such as art galleries, museums, and large stadiums, the construction methods adopted in traditional residential projects have been severely challenged; the construction technology of A-columns and variable-section multi-curvature ring beams has been widely applied in fields such as bridges, high-rise buildings, and large public facilities. These structural forms not only improve the stability and load-bearing capacity of buildings but also meet the dual requirements of modern architecture for aesthetics and practicality; currently, the construction of special-shaped A-columns of grandstands mainly relies on the support of traditional steel pipe scaffolds. However, traditional steel pipe scaffolds are difficult to bear the huge loads generated by the pouring of large-volume concrete, there are potential safety hazards, and they cannot meet the pouring construction of local large-volume concrete; therefore, we propose a construction method for a special-shaped A-column and a multi-curvature ring beam of a grandstand to solve the above problems. Summary of the Invention

[0003] To solve the above problems, the present invention provides a construction method for a special-shaped A-column and a multi-curvature ring beam of a grandstand, which solves the problem that traditional steel pipe scaffolds are difficult to bear huge loads.

[0004] The present invention is realized through the following scheme: a construction method for a special-shaped A-column and a multi-curvature ring beam of a grandstand, the special-shaped A-column includes a vertical column, an inclined column, and an upper structure, and the construction method includes the following steps:

[0005] S1. Perform the positioning, setting out, steel bar, and formwork construction of the vertical column and the inclined column on the floor slab that has been constructed.

[0006] S2. Fix a special-shaped formwork at a set position at the upper ends of the vertical column formwork and the inclined column formwork, and make the two ends of the special-shaped formwork closely adhere to the upper parts of the vertical column formwork and the inclined column formwork respectively.

[0007] S3. Set up a support frame in the area of the floor slab between the vertical column and the inclined column, including the steps of: obliquely supporting a plurality of first diagonal braces between the floor slab and the inclined column formwork, and making the plurality of first diagonal braces arranged in parallel at intervals; vertically supporting a plurality of first vertical poles between the floor slab and the inclined column formwork, and making the plurality of first vertical poles arranged in parallel at intervals; vertically supporting a plurality of second vertical poles between the floor slab and the special-shaped formwork, and making the plurality of second vertical poles arranged in parallel at intervals.

[0008] S4. Perform the positioning, setting out, steel bar, and formwork construction of the upper structure at the upper parts of the vertical column steel bars and the inclined column steel bars.

[0009] S5. Position, set out the lines, and carry out the construction of steel bars and formwork for the ring beam at the upper structure;

[0010] S6. Carry out the concrete pouring construction for the columns, inclined columns, upper structure, and ring beam.

[0011] A further improvement of the construction method for the special-shaped A-column and multi-curved ring beam of the grandstand in the present invention lies in that the erection of the support frame further includes the steps of: obliquely supporting a plurality of second diagonal braces between the column formwork and the inclined column formwork, and arranging the plurality of second diagonal braces in parallel at intervals.

[0012] A further improvement of the construction method for the special-shaped A-column and multi-curved ring beam of the grandstand in the present invention lies in that when supporting a plurality of second vertical poles, a cushion frame is arranged at the top of the plurality of second vertical poles, and the cushion frame is supported by the second vertical poles, so that the cushion frame fits against the inner side of the special-shaped formwork, and then the second vertical poles are fixed to the floor slab.

[0013] A further improvement of the construction method for the special-shaped A-column and multi-curved ring beam of the grandstand in the present invention lies in that when arranging the cushion frame at the top of the plurality of second vertical poles, first provide a bottom plate, and arrange the bottom plate at the top of the plurality of second vertical poles, then fix a plurality of vertical rods on the top of the bottom plate and arrange the plurality of vertical rods in parallel at intervals, then fix a plurality of cross rods on the plurality of vertical rods and arrange the plurality of cross rods in parallel at intervals, and then support the bottom of the bottom plate by the plurality of second vertical poles, so that the outer contour formed by the plurality of vertical rods and the plurality of cross rods supports against the inner side of the special-shaped formwork.

[0014] A further improvement of the construction method for the special-shaped A-column and multi-curved ring beam of the grandstand in the present invention lies in that after supporting the bottom of the bottom plate by the plurality of second vertical poles and making the outer contour support against the inner side of the special-shaped formwork, provide a plurality of wooden beams, and respectively insert the plurality of wooden beams into the gaps between the outer contour and the special-shaped formwork to increase the contact area between the cushion frame and the special-shaped formwork.

[0015] A further improvement of the construction method for the special-shaped A-column and multi-curved ring beam of the grandstand in the present invention lies in that when constructing the floor slab, provide a plurality of embedded pipes, and embed the plurality of embedded pipes in the concrete poured for the floor slab;

[0016] When constructing a plurality of first diagonal braces, respectively fix the lower parts of the plurality of first diagonal braces to the plurality of embedded pipes.

[0017] A further improvement of the construction method for the special-shaped A-column and multi-curved ring beam of the grandstand in the present invention lies in that the special-shaped formwork adopts a wooden formwork, and the special-shaped formwork is provided with connecting bars;

[0018] When constructing the special-shaped formwork, fix the connecting bars to the column steel bars and / or the inclined column steel bars, so that the special-shaped formwork is fixed at the set position at the upper ends of the column formwork and the inclined column formwork.

[0019] A further improvement of the construction method for the special-shaped A-column and multi-curved ring beam of the grandstand in the present invention lies in that when constructing the formwork of the upper structure, the formwork in the top corner area of the upper structure adopts steel formwork.

[0020] A further improvement of the construction method for the special-shaped A-column and multi-curved ring beam of the grandstand in the present invention lies in that when constructing the formwork of the upper structure, the steel formwork is fixed to the steel bars of the upper structure, and the steel formwork is removed after the upper structure is poured and formed.

[0021] A further improvement of the construction method for the special-shaped A-column and multi-curved ring beam of the grandstand in the present invention lies in that the positioning construction of the columns, inclined columns, upper structures, and ring beams all adopts BIM modeling technology for positioning.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] By adopting a plurality of first diagonal braces, second diagonal braces, first vertical poles, and second vertical poles, the present invention can stably support between the columns and inclined columns, provide stable supporting force, and moreover, by arranging a cushion support at the bottom of the special-shaped formwork and using the second vertical pole to support the cushion support to support the special-shaped formwork, the supporting effect on the special-shaped formwork can be greatly improved, thereby ensuring that the supporting strength of the entire lower structure is good during concrete pouring; the special-shaped formwork adopts customized wooden formwork, which can accurately adapt to the special-shaped curved surface and ensure the forming quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Shows a schematic diagram of the overall structure of the present invention.

[0025] Figure 2 Shows the present invention Figure 1 Enlarged schematic diagram at location A in.

[0026] Figure 3 Shows a schematic diagram of the arrangement of the first diagonal brace and the second diagonal brace of the present invention.

[0027] Figure 4 Shows a schematic diagram of the cushion support structure of the present invention.

[0028] Figure 5 Shows a schematic diagram of the upper structure of the present invention.

[0029] In the figure: 1, floor slab; 2, column; 3, inclined column; 4, upper structure; 401, steel bars of the upper structure; 402, formwork of the upper structure; 5, steel formwork; 6, special-shaped formwork; 7, cushion support; 701, bottom plate; 702, vertical rod; 703, cross bar; 704, wooden lath; 8, support frame; 801, first diagonal brace; 802, first vertical pole; 803, second diagonal brace; 804, second vertical pole; 805, embedded pipe; 9, ring beam. DETAILED DESCRIPTION OF THE INVENTION

[0030] In order to solve the problem that traditional steel pipe scaffolds are difficult to bear huge loads, the present invention provides a construction method for a special-shaped A-column and multi-curvature ring beam of a grandstand. The following further describes the construction method for the special-shaped A-column and multi-curvature ring beam of the grandstand with specific embodiments in conjunction with the accompanying drawings.

[0031] Refer to Figures 1 to 5 As shown, a construction method for a special-shaped A-column and multi-curvature ring beam of a grandstand, the special-shaped A-column includes a vertical column 2, an inclined column 3 and an upper structure 4, and the construction method includes the following steps:

[0032] S1. Perform positioning, setting out, steel bar and formwork construction of the vertical column 2 and the inclined column 3 on the floor slab 1 that has been constructed.

[0033] S2. Fix a special-shaped formwork 6 at a set position at the upper ends of the vertical column formwork and the inclined column formwork, and make both ends of the special-shaped formwork 6 closely adhere to the upper parts of the vertical column formwork and the inclined column formwork respectively.

[0034] S3. Erect a support frame 8 in the area of the floor slab 1 between the vertical column 2 and the inclined column 3, including the steps of: obliquely supporting a plurality of first inclined braces 801 between the floor slab 1 and the inclined column formwork, and making the plurality of first inclined braces 801 arranged in parallel at intervals; vertically supporting a plurality of first vertical poles 802 between the floor slab 1 and the inclined column formwork, and making the plurality of first vertical poles 802 arranged in parallel at intervals; vertically supporting a plurality of second vertical poles 804 between the floor slab 1 and the special-shaped formwork 6, and making the plurality of second vertical poles 804 arranged in parallel at intervals.

[0035] S4. Perform positioning, setting out, steel bar and formwork construction of the upper structure 4 at the upper parts of the vertical column steel bars and the inclined column steel bars.

[0036] S5. Perform positioning, setting out, steel bar and formwork construction of the ring beam 9 at the upper structure 4.

[0037] S6. Perform concrete pouring construction on the vertical column 2, the inclined column 3, the upper structure 4 and the ring beam 9.

[0038] Specifically, in this embodiment, hoop fasteners are provided on the outsides of both the vertical column formwork and the inclined column formwork for strengthening the formwork, and the first inclined braces 801 are fixed to the inclined column formwork through the hoop fasteners.

[0039] Further, refer to Figure 3 As shown, the connection between the first vertical pole 802 and one or more of the first inclined braces 801 is fixed to strengthen the connection between the two, thereby improving the support strength of the entire support frame 8.

[0040] By adopting the above design, stable supporting force can be provided. Moreover, by arranging the supporting frame 7 at the bottom of the special-shaped formwork 6 and using the second vertical rod 804 to support the supporting frame 7 so as to support the special-shaped formwork 6, the supporting effect on the special-shaped formwork 6 can be greatly improved, thus ensuring that the supporting strength of the whole lower structure is good during concrete pouring; the special-shaped formwork 6 adopts a customized wooden formwork, which can accurately adapt to the special-shaped curved surface and ensure the forming quality.

[0041] Among them, referring to Figure 2 As shown, the steps for erecting the support frame 8 further include: obliquely supporting a plurality of second diagonal braces 803 between the column formwork and the inclined column formwork, and arranging the plurality of second diagonal braces 803 in parallel at intervals.

[0042] By arranging a plurality of second diagonal braces 803 between the column formwork and the inclined column formwork, the supporting strength for both of them can be greatly improved, so as to improve the supporting strength of the support frame 8.

[0043] Among them, referring to Figure 2 and Figure 4 As shown, when supporting a plurality of second vertical rods 804, a supporting frame 7 is arranged at the top of the plurality of second vertical rods 804, and the supporting frame 7 is supported by the second vertical rods 804 so that the supporting frame 7 fits against the inner side of the special-shaped formwork 6, and then the second vertical rods 804 are fixed to the floor slab 1;

[0044] When arranging the supporting frame 7 at the top of the plurality of second vertical rods 804, first provide a bottom plate 701, and arrange the bottom plate 701 at the top of the plurality of second vertical rods 804. Then, fix a plurality of vertical rods 702 on the top of the bottom plate 701 and arrange the plurality of vertical rods 702 in parallel at intervals. Then, fix a plurality of cross rods 703 on the plurality of vertical rods 702 and arrange the plurality of cross rods 703 in parallel at intervals. Then, support the bottom of the bottom plate 701 by the plurality of second vertical rods 804 so that the outer contour formed by the plurality of vertical rods 702 and the plurality of cross rods 703 supports against the inner side of the special-shaped formwork 6.

[0045] By arranging the supporting frame 7 between the special-shaped formwork 6 and the second vertical rods 804, the second vertical rods 804 can support the bottom plate 701, so that a plurality of cross rods 703 and a plurality of vertical rods 702 support a plurality of positions at the bottom of the special-shaped formwork 6, which can make the distribution of the supporting force balanced and can more effectively support the special-shaped formwork 6; the connection and fixation of the cross rods 703 and the vertical rods 702 can greatly improve the supporting strength of the supporting frame 7.

[0046] Among them, referring to Figure 4 As shown, after supporting the bottom of the bottom plate 701 by the plurality of second vertical rods 804 and making the outer contour support against the inner side of the special-shaped formwork 6, a plurality of wooden beams 704 are provided and inserted into the gaps between the outer contour and the special-shaped formwork 6 respectively to increase the contact area between the supporting frame 7 and the special-shaped formwork 6.

[0047] By setting the wooden joists 704, the contact area between the special-shaped formwork 6 and the vertical bars 702 and the horizontal bars 703 can be buffered to prevent concentrated loads and improve the support effect.

[0048] Among them, referring to Figure 3 As shown, when constructing the construction floor slab 1, a plurality of embedded pipes 805 are provided and buried in the concrete poured for the construction floor slab 1;

[0049] When constructing a plurality of first diagonal braces 801, the lower parts of the plurality of first diagonal braces 801 are respectively fixed to the plurality of embedded pipes 805.

[0050] By providing the embedded pipes 805 for the lower part of the first diagonal brace 801 to be fixed, it is convenient for the installation and construction of the first diagonal brace 801, and the use of the embedded pipes 805 can prevent the first diagonal brace 801 from shifting during support.

[0051] Among them, the special-shaped formwork 6 is made of wooden formwork, and the special-shaped formwork 6 is provided with connecting bars;

[0052] When constructing the special-shaped formwork 6, the connecting bars are fixed to the column steel bars and / or the inclined column steel bars so that the special-shaped formwork 6 is fixed at the set position at the upper end of the column formwork and the inclined column formwork.

[0053] By customizing the special-shaped formwork 6, the cross-sectional dimensions and forming effects are guaranteed, and the use of wooden formwork can accurately adapt to the special-shaped curved surface.

[0054] Among them, when constructing the formwork of the upper structure 4, the formwork in the top corner area of the upper structure 4 is made of steel formwork 5.

[0055] Specifically, in this embodiment, the top corner area of the upper structure 4 refers to the area with a radian design (easily deformed area) at the top of the special-shaped A column;

[0056] When constructing the formwork 402 of the upper structure, the steel formwork 5 is fixed to the steel bars 401 of the upper structure, and the steel formwork 5 is removed after the upper structure 4 is poured and formed.

[0057] By setting the steel formwork 5, the deformation probability of this area can be reduced, and the forming quality of this area can be guaranteed.

[0058] Among them, the positioning construction of the columns 2, the inclined columns 3, the upper structure 4, and the ring beam 9 all uses BIM modeling technology for positioning.

[0059] By adopting the above design, this construction method uses a three-dimensional laser scanner and BIM technology to achieve accurate positioning of components and ensure construction accuracy.

[0060] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variation thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0061] The present invention has been described in detail above in conjunction with the embodiments with reference to the drawings. Those of ordinary skill in the art can make various variations of the present invention based on the above description. Therefore, certain details in the embodiments should not constitute a limitation to the present invention, and the scope of the present invention will be defined by the scope defined in the appended claims.

Claims

1. A construction method for a special-shaped A-column of a grandstand and a multi-curvature ring beam, characterized in that, The special-shaped A-pillar includes a vertical column, an inclined column, and an upper structure. The construction method includes the following steps: S1. Position, lay out lines, construct steel bars and formworks for the vertical column and the inclined column on the floor slab that has been constructed; S2. Fix a special-shaped formwork at the set positions at the upper ends of the vertical column formwork and the inclined column formwork, and make the two ends of the special-shaped formwork closely adhere to the upper parts of the vertical column formwork and the inclined column formwork respectively; S3. Erect a support frame in the area of the floor slab between the vertical column and the inclined column, including the steps of: obliquely supporting a plurality of first diagonal braces between the floor slab and the inclined column formwork, and arranging the plurality of first diagonal braces in parallel at intervals; vertically supporting a plurality of first vertical poles between the floor slab and the inclined column formwork, and arranging the plurality of first vertical poles in parallel at intervals; vertically supporting a plurality of second vertical poles between the floor slab and the special-shaped formwork, and arranging the plurality of second vertical poles in parallel at intervals; S4. Position, lay out lines, construct steel bars and formworks for the upper structure at the upper parts of the vertical column steel bars and the inclined column steel bars; S5. Position, lay out lines, construct steel bars and formworks for the ring beam at the upper structure; S6. Carry out concrete pouring construction for the vertical column, the inclined column, the upper structure, and the ring beam.

2. The construction method of the special-shaped A column and multi-curvature ring beam of the grandstand according to claim 1, characterized in that, The erection of the support frame further includes the step of: obliquely supporting a plurality of second diagonal braces between the vertical column formwork and the inclined column formwork, and arranging the plurality of second diagonal braces in parallel at intervals.

3. The construction method of the special-shaped A column and multi-curvature ring beam of the grandstand according to claim 1, characterized in that, When supporting the plurality of second vertical poles, set a cushion frame at the tops of the plurality of second vertical poles, and use the second vertical poles to support the cushion frame from below, so that the cushion frame fits against the inner side of the special-shaped formwork, and then fix the second vertical poles to the floor slab.

4. The construction method of the special-shaped A column and multi-curvature ring beam of the grandstand according to claim 3, characterized in that When setting the cushion frame at the tops of the plurality of second vertical poles, first provide a bottom plate, and set the bottom plate at the tops of the plurality of second vertical poles. Then fix a plurality of vertical bars on the top of the bottom plate and arrange the plurality of vertical bars in parallel at intervals. Then fix a plurality of cross bars on the plurality of vertical bars and arrange the plurality of cross bars in parallel at intervals. Then use the plurality of second vertical poles to support the bottom of the bottom plate, so that the outer contour formed by the plurality of vertical bars and the plurality of cross bars supports against the inner side of the special-shaped formwork.

5. The construction method of the special-shaped A column and multi-curvature ring beam of the grandstand according to claim 4, characterized in that, After using the plurality of second vertical poles to support the bottom of the bottom plate and making the outer contour support against the inner side of the special-shaped formwork, provide a plurality of wooden battens and insert the plurality of wooden battens into the gaps between the outer contour and the special-shaped formwork respectively to increase the contact area between the cushion frame and the special-shaped formwork.

6. The construction method of the special-shaped A column and multi-curvature ring beam of the grandstand according to claim 1, wherein When constructing the floor slab, provide a plurality of embedded pipes and embed the plurality of embedded pipes in the concrete poured for the floor slab; When constructing the plurality of first diagonal braces, fix the lower parts of the plurality of first diagonal braces to the plurality of embedded pipes respectively.

7. The construction method of the special-shaped A column and multi-curvature ring beam of the grandstand according to claim 1, characterized in that The special-shaped formwork adopts a wooden formwork, and the special-shaped formwork is provided with connecting bars; When constructing the special-shaped formwork, fix the connecting bars to the vertical column steel bars and / or the inclined column steel bars, so that the special-shaped formwork is fixed at the set positions at the upper ends of the vertical column formwork and the inclined column formwork.

8. The construction method of the special-shaped A column and multi-curvature ring beam of the grandstand according to claim 1, characterized in that, When constructing the formwork for the upper structure, use steel formworks for the formworks in the top corner area of the upper structure.

9. The construction method of the special-shaped A column and multi-curvature ring beam of the grandstand according to claim 8, characterized in that, When constructing the formwork for the upper structure, fix the steel formworks to the steel bars of the upper structure, and remove the steel formworks after the upper structure is poured and formed.

10. The construction method of the special-shaped A column and multi-curvature ring beam of the grandstand according to claim 1, characterized in that The positioning construction of the vertical column, the inclined column, the upper structure, and the ring beam all adopts BIM modeling technology for positioning.

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