Construction method for one-time forming of ultra-wide reinforced concrete stairs

Abstract

The invention discloses a construction method for one-time forming of an ultra-wide reinforced concrete stair, which comprises the following steps: step 1, preparation before construction: paying off the stair according to a design drawing; secondly, a stair bottom formwork and stair side formworks are installed; thirdly, binding of a reinforcing mesh is completed; fourthly, a kicking surface formwork is installed at the step section of the stair; fifthly, a supporting plate is installed on the outer side of each kicking face formwork; sixthly, a supporting base is installed at the bottom of the supporting plate; seventhly, a positioning clamp for limiting the supporting plate is installed; 8, a connecting plate is mounted at the top of the supporting plate; and ninthly, concrete is poured, the formwork is removed after the concrete meets the design requirement, and by means of the construction method, the straightness of step forming can be guaranteed, and the construction quality of stairs is guaranteed.

Description

A construction method for one-time molding of an ultra-wide reinforced concrete staircase Technical Field

[0001] This invention relates to the field of building engineering technology, and in particular to a construction method for one-time molding of an ultra-wide reinforced concrete staircase. Background Technology

[0002] Large public buildings such as shopping malls, stadiums, exhibition halls, and conference centers typically use extra-wide reinforced concrete staircases (generally wider than 10m) to accommodate large crowds and facilitate rapid evacuation, thus preventing overcrowding and stampedes. However, during construction, personnel need to step on the riser formwork during steel reinforcement inspection and concrete pouring. Conventional riser formwork, due to its excessive length, is prone to misalignment, making it impossible to guarantee the straightness of the steps during formation and severely impacting the construction quality of the staircase. Summary of the Invention

[0003] One of the objectives of this invention is, at least, to provide a construction method for one-time molding of an ultra-wide reinforced concrete staircase, which addresses the problems existing in the prior art and ensures the straightness of the treads and the construction quality of the staircase.

[0004] To achieve the above objectives, the technical solution adopted by the present invention includes the following aspects.

[0005] A construction method for a one-time forming of an ultra-wide reinforced concrete staircase includes the following steps: Step 1, pre-construction preparation, completing the staircase layout according to the design drawings; Step 2, installing the bottom formwork for each tread section, platform section, and stair beam, and connecting them to form the staircase bottom formwork; installing the side formwork for each tread section, platform section, and stair beam, and connecting them to form the staircase side formwork; Step 3, completing the binding of the reinforcing mesh, ensuring the reinforcing mesh is located on the staircase bottom formwork and between two staircase side formworks; Step 4, installing the riser formwork at each tread section, ensuring multiple riser formworks at each tread section are arranged side-by-side along the length of the tread section and above the reinforcing mesh; Step 5, installing the riser formwork on each of the aforementioned sections... Step 6: Install a support plate on the side of the riser template away from the step formed by the riser template, so that the bottom of the support plate is flush with the bottom of the riser template; Step 7: Install multiple support bases side by side on the bottom of the support plate along the length of the support plate; Step 8: Install multiple positioning clips for limiting the support plate side by side along the length of the support plate, with the positioning clips and support bases staggered; Step 9: Install multiple connecting plates side by side between the two side templates of each step segment, so that each connecting plate is installed on top of the support plate and connects the tread templates of the step segment to form a whole, with the connecting plates and positioning clips staggered; Step 10: Pour concrete and remove the formwork after the concrete reaches the design requirements.

[0006] Preferably, in step two, the bottom template of the step section is a step bottom template, the overall width of the step bottom template is adapted to the width of the staircase, and the step bottom template is installed according to a certain slope; the side template of the step section is a step side template, and two of the step side templates are respectively installed on both sides of the step bottom template, so that the bottom of the step side template is fixedly connected to the top of the step bottom template.

[0007] Preferably, in step three, the reinforcing mesh is formed by connecting horizontal and vertical reinforcing bars. The reinforcing mesh includes horizontal bars and vertical bars. Multiple horizontal bars at the step section are arranged side by side along the length of the bottom template of the step, and multiple vertical bars at the step section are arranged side by side between the two side templates of the step.

[0008] Preferably, in step four, multiple kick templates are installed side by side above the reinforcing mesh along the length of the bottom template of the step, so that the two ends of each kick template are fixedly connected to the sides of the two side templates of the step that are close to each other. Between two adjacent steps, the top of the kick template of the lower step is not lower than the bottom of the kick template of the higher step.

[0009] Preferably, in step five, the support plate is made of wood, and the support plate is tied to the kick plate template with steel wire so that one side of the support plate fits against the side of the kick plate template away from the step formed by the kick plate template.

[0010] Preferably, in step six, the support base includes vertical ribs and horizontal ribs. The first end of the vertical rib is vertically welded to the first end of the horizontal rib, so that the horizontal rib is located at the bottom of the support plate and the kick plate template. The two ends of the horizontal rib are far apart from each other. The first end of the horizontal rib extends beyond the side of the support plate away from the kick plate template, and the second end of the horizontal rib extends beyond the inner side of the kick plate template. The inner side of the kick plate template is the side close to the step formed by the kick plate template. The second end of the horizontal rib is welded to the longitudinal rib of the steel mesh, and the second end of the vertical rib is welded to the longitudinal rib of the steel mesh template.

[0011] Preferably, in step six, the support base is installed on the bottom of the support plate using a pad. The pad has a rectangular cross-section and is made of wood. The width of the pad is adapted to the overall width of the support plate and the kick plate. The pad is stably connected to the support plate and located at the bottom of the support plate, so that one side of the pad is flush with the inner side of the kick plate. The horizontal rib of the support base is located at the bottom of the pad.

[0012] Preferably, in step seven, the positioning clip is made of steel bars and includes a positioning part and a fixing part. The fixing part is in the shape of a right angle L. The first end of the positioning part is welded to the longitudinal bar of the steel mesh so that the positioning part is located on the side of the support plate away from the kick plate. The second end of the positioning part extends to the top of the support plate. The first end of the fixing part is welded to the second end of the positioning part so that the positioning part and the fixing part form an inverted U-shaped bayonet. The short side of the fixing part is located at the top of the support plate, and the long side of the fixing part is in contact with the inner side of the kick plate. The second end of the fixing part is welded to the longitudinal bar of the steel mesh so that the support plate and the kick plate are located in the bayonet of the positioning clip.

[0013] Preferably, in step seven, the opening formed by the short side and the long side of the fixing part is 120°-150°. The first end of the fixing part is welded to the second end of the positioning part, so that the short side of the fixing part is located at the top of the support plate, the long side of the fixing part is obliquely set to the kick template, the second end of the fixing part is away from the kick template, and the second end of the fixing part is welded to the longitudinal bar of the steel mesh.

[0014] Preferably, in step eight, the connecting plate is located between the two step side templates of the step section. The connecting plate is made of wood. The connecting plate and the support plate are fixed with iron nails. The connection part between the connecting plate and the support plate is the edge formed by the top of the support plate and the side of the support plate away from the kick template. The two ends of the connecting plate are far apart from each other and are located on the support plate at the bottom and top of the step section (1), respectively. Alternatively, a bevel is provided at the connection part between the support plate and the connecting plate. The bevel is located at the top of the support plate and away from the kick template. The bevel is formed by cutting the top of the support plate obliquely towards the side of the support plate away from the kick template.

[0015] In summary, by adopting the above technical solutions, the present invention has at least the following beneficial effects: This construction method improves the structural strength of the kick formwork by setting a support plate on the outside of the kick formwork and positions the kick formwork; by setting a support base at the bottom of the support plate, it provides support for the support plate and the kick formwork, preventing vertical displacement of the support plate and the kick formwork; by setting a positioning clip on the support plate, it limits the movement of the support plate, preventing horizontal displacement of the kick formwork; by setting a connecting plate on the top of the support plate, it connects the various tread formworks of the stair formwork system into a whole, further strengthening the overall stress on the tread formwork and allowing for local straightness adjustment of the tread formwork. Attached Figure Description

[0016] Figure 1 is a construction flowchart of an ultra-wide reinforced concrete staircase formed in one step according to an exemplary embodiment of the present invention.

[0017] Figure 2 is a plan view of an ultra-wide reinforced concrete staircase.

[0018] Figure 3 is a cross-sectional schematic diagram of an ultra-wide reinforced concrete staircase.

[0019] Figure 4 is a structural diagram showing the relative positions of the bottom template, side template, and riser template of the step.

[0020] Figure 5 is a structural diagram showing the relative positions of the support base, support plate, and kick plate.

[0021] Figure 6 is another structural diagram showing the relative positions of the support base, support plate, and kick plate.

[0022] Figure 7 is a schematic diagram of the positioning card.

[0023] Figure 8 shows another structural diagram of the positioning card.

[0024] Figure 9 is a structural diagram showing the relative positions of the positioning card, the support plate, and the kick plate.

[0025] Figure 10 is another structural schematic diagram showing the relative positions of the positioning card, the support plate, and the kick plate.

[0026] Figure 11 is a structural schematic diagram showing the relative positions of the connecting plate and the support plate.

[0027] Figure 12 is another structural schematic diagram showing the relative positions of the connecting plate and the support plate.

[0028] The diagram is labeled as follows: 1-Step section, 2-Platform section, 3-Stair beam, 31-Connecting stair beam, 32-Step stair beam, 33-Stair opening stair beam, 4-Ground, 5-Terrace, 6-Step bottom formwork, 7-Step side formwork, 8-Riser formwork, 9-Support plate, 10-Support base, 101-Vertical reinforcement, 102-Horizontal reinforcement, 11-Longitudinal reinforcement, 12-Positioning clip, 121-Positioning part, 122-Fixing part, 13-Connecting plate, 14-Padded block. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments, so that the objectives, technical solutions, and advantages of the present invention will be clearer. It should be understood that the specific embodiments described herein are only for explaining the present invention and are not intended to limit the present invention.

[0030] In the description of this invention, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances. Examples

[0031] This embodiment illustrates a construction method for a one-time molding of an ultra-wide reinforced concrete staircase. Figure 1 shows its construction flowchart. Referring to Figures 2 and 3, the ultra-wide reinforced concrete staircase includes tread sections 1, platform sections 2, and stair beams 3. The platform section 2 is located between two adjacent tread sections 1. The stair beams 3 include connecting beams 31, step beams 32, and top beams 33. The connecting beams 31 are located at the connection between the tread section 1 and the platform section 2. The step beams 32 are located at the bottom of the tread section 1 (the step beams 32 are optional). The two top beams 33 are respectively located at the lower and upper ends of the staircase. The top beam 33 at the lower end of the staircase connects the staircase to the ground 4, and the top beam 33 at the upper end of the staircase connects the staircase to the terrace 5. The one-time molding construction method for ultra-wide reinforced concrete staircases is suitable for staircases wider than 10m, especially outdoor staircases with a width of 20-30m. The method includes the following steps: Step 1, pre-construction preparation: Laying out the staircase according to the design drawings; Step 2, installing the bottom formwork for each of the tread section 1, platform section 2, and stair beam 3, and connecting them to form the staircase bottom formwork; installing the side formwork for each of the tread section 1, platform section 2, and stair beam 3, and connecting them to form the staircase side formwork; Referring to Figure 4, the bottom formwork for tread section 1 is the tread bottom formwork 6. The overall width of the tread bottom formwork 6 is adapted to the width of the staircase, and the tread bottom formwork 6 is installed with a certain slope (e.g., 1%); the side formwork for tread section 1... For the step side template 7, two step side templates 7 are respectively installed on both sides of the step bottom template 6, so that the bottom of the step side template 7 is fixedly connected to the top of the step bottom template 6 (when the step bottom template 6 and the step side template 7 are made of aluminum template or steel template, they can be welded together; when the step bottom template 6 and the step side template 7 are made of wooden template, they can be fixed with nails; when the step bottom template 6 is made of aluminum template or steel template and the step side template 7 is made of wooden template, they can be connected with special aluminum-wood or steel-wood connectors). The spacing between the two step side templates 7 is consistent with the width of the staircase. Step three, complete the binding of the reinforcing mesh, so that the reinforcing mesh is located on the stair bottom template and between the two stair side templates. The reinforcing mesh is formed by connecting horizontal and vertical reinforcing bars. The reinforcing mesh includes horizontal and vertical bars 11 (refer to Figure 5). Multiple horizontal bars at step 1 are arranged side by side along the length of the bottom template 6 of the step, and multiple vertical bars 11 at step 1 are arranged side by side between two side templates 7 of the step. Step four: Install the riser template 8 at step 1 of the staircase, so that multiple riser templates 8 at each step 1 are arranged side by side along the length of the step 1 and located above the reinforcing mesh. Along the length of the bottom template 6 of the step, install multiple riser templates 8 side by side above the reinforcing mesh, so that the two ends of each riser template 8 are fixedly connected to the side of the two side templates 7 that are close to each other (when the side templates 7 and riser templates 8 are made of aluminum templates or steel templates, they can be welded together).When the step side template 7 and the riser template 8 are made of wooden templates, they can be fixed with nails. Between two adjacent steps, the top of the riser template 8 of the lower step should not be lower than the bottom of the riser template 8 of the higher step. Step 5: Install a support plate 9 on the outside of each riser template 8, so that the bottom of the support plate 9 is flush with the bottom of the riser template 8. The outside of the riser template 8 is the side of the riser template 8 away from the step formed by that riser template 8. The support plate 9 is made of wood, and its length and width are adapted to the length and width of the riser template 8. The thickness of the support plate 9 is greater than the thickness of the riser template 8. The support plate 9 and the riser template 8 are tied with steel wire, so that one side of the support plate 9 is flush with the outside of the riser template 8. The support plate 9 is used to improve the structural strength of the kick plate 8 and to position the kick plate 8. Step six: Along the length of the support plate 9, multiple support bases 10 are installed side-by-side at the bottom of the support plate 9. The support base 10 is a stirrup made of steel bars according to the slope of the step bottom template 6. Referring to Figure 5, the support base 10 includes vertical bars 101 and horizontal bars 102. The vertical bars 101 and horizontal bars 102 are vertically connected. The first end of the vertical bar 101 is welded to the first end of the horizontal bar 102. When the support base 10 is installed at the bottom of the support plate 9, the horizontal bars 102 are located at the bottom of the support plate 9 and the kick plate 8, with the two ends of the horizontal bars 102 far apart from each other, and the first end of the horizontal bars 102 extending beyond the support plate. On the side away from the kick plate 8, the second end of the horizontal reinforcement 102 extends beyond the inner side of the kick plate 8. The inner side of the kick plate 8 is the side close to the step formed by the kick plate 8. The second end of the horizontal reinforcement 102 is welded to the longitudinal reinforcement 11 of the steel mesh, with the first and second ends of the horizontal reinforcement 102 facing each other. The second end of the vertical reinforcement 101 is welded to the longitudinal reinforcement 11 of the steel mesh, with the first and second ends of the vertical reinforcement 101 facing each other. The support base 10 is used to support the support plate 9 and the kick plate 8, preventing the support plate 9 and the kick plate 8 from shifting in the vertical direction. In actual use, referring to Figure 6, the support base 10 can also be installed at the bottom of the support plate 9 by means of a pad 14. The cross-section of the pad 14 is rectangular. Block 14 is made of wood (the thickness of block 14 is 10-15mm). The width of block 14 is adapted to the overall width of support plate 9 and kick plate 8. Block 14 is stably connected to support plate 9 (e.g., by nails) and located at the bottom of support plate 9. One side of block 14 is flush with the inner side of kick plate 8. The horizontal rib 102 of support base 10 is located at the bottom of block 14. The two ends of horizontal rib 102 are far apart from each other. The first end of horizontal rib 102 extends beyond the side of support plate 9 away from kick plate 8. The second end of horizontal rib 102 extends beyond the inner side of kick plate 8. The second end of horizontal rib 102 is welded to the longitudinal rib 11 of steel mesh. The second end of vertical rib 101 is welded to the longitudinal rib 11 of steel mesh.The support base 10 is installed at the bottom of the support plate 9 by means of the pad block 14. Compared with directly installing the support base 10 at the bottom of the support plate 9, this reduces the part of the support base 10 exposed outside the concrete (the process of later applying cement mortar to the surface of the stairs can prevent the exposed part from being exposed to the air). The distance between the part of the support base 10 located inside the concrete and the concrete surface is greater, reducing the risk of steel reinforcement corrosion later. Step seven: Along the length of the support plate 9, multiple positioning clips 12 for limiting the position of the support plate 9 are installed side by side. The positioning clips 12 are staggered with the support base 10. The positioning clips 12 are also staggered with the steel wires binding the support plate 9 and the riser template 8 (the steel wires can be removed after the positioning clips 12 are installed). Referring to Figures 7 and 9, the positioning clip 12 is made of steel reinforcement and includes a positioning part 121 and a fixing part 122. The fixing part 122 is in the shape of a right angle L. The first end of the positioning part 121 is welded to the longitudinal bar 11 of the steel mesh, so that the positioning part 121 is located on the side of the support plate 9 away from the kick plate 8. The second end of the positioning part 121 extends to the top of the support plate 9. The first end and the second end of the positioning part 121 are opposite each other. The first end of the fixing part 122 is welded to the second end of the positioning part 121, so that the positioning part 121 and the fixing part 122 form an inverted U-shaped bayonet. The short side of the fixing part 122 is located at the top of the support plate 9, and the long side of the fixing part 122 is attached to the inner side of the kick plate 8. The second end of the fixing part 122 is welded to the longitudinal bar 11 of the steel mesh. The longitudinal reinforcement 11 is welded together, and the first and second ends of the fixing part 122 are opposite to each other, so that the support plate 9 and the kick plate 8 are located in the slot of the positioning clip 12. The positioning clip 12 is used to limit the support plate 9 and prevent the support plate 9 from moving, thereby avoiding the horizontal displacement of the kick plate 8. As a preferred embodiment, referring to Figures 8 and 10, the opening formed by the short side and the long side of the fixing part 122 is 120°-150°. The first end of the positioning part 121 is welded to the longitudinal reinforcement 11 of the steel mesh, so that the positioning part 121 is located on the side of the support plate 9 away from the kick plate 8. The second end of the positioning part 121 extends to the top of the support plate 9. The first end of the fixing part 122 is welded to the second end of the positioning part 121, so that the fixing part 122 is positioned to the top of the support plate 9. The short side of part 122 is located at the top of the support plate 9, and the long side of fixed part 122 is obliquely set with the riser template 8. The second end of fixed part 122 is away from the riser template 8. The second end of fixed part 122 is welded to the longitudinal bar 11 of the steel mesh. In actual use, after demolding, the steel bars exposed outside the concrete of positioning card 12 will be cut. The process of applying cement mortar to the surface of the stairs can prevent the cut surface from being exposed to the air, thereby preventing the steel bars from being corroded. Step 8: Install multiple connecting plates 13 side by side between the two side templates of each step section 1, so that each connecting plate 13 is installed on the top of the support plate 9 and connects the tread templates 8 of the step section 1 to form a whole. The connecting plates 13 and positioning cards 12 are staggered.The connecting plate 13 is located between the two side templates 7 of the step section 1. The connecting plate 13 is made of wood and is fixed to the support plate 9 with nails. The connection between the connecting plate 13 and the support plate 9 is the edge formed by the top of the support plate 9 and the side of the support plate 9 away from the riser template 8 (refer to Figure 11). The two ends of the connecting plate 13 are far apart from each other and are located on the support plates 9 at the bottom and top of the step section 1, respectively. The connecting plate 13 is used to connect the various tread templates 8 of the step section 1 to form a whole, further strengthening the overall stress of the tread templates 8, and can also locally straighten the tread templates 8. Linear adjustment; In actual application, referring to Figure 12, a beveled cut is provided at the connection between the support plate 9 and the connecting plate 13. The beveled cut is located at the top of the support plate 9 and away from the riser template 8. The beveled cut is formed by cutting from the top of the support plate 9 diagonally towards the side of the support plate 9 away from the riser template 8. The beveled cut is used to increase the contact area between the connecting plate 13 and the support plate 9 and improve the stability of the connection between the connecting plate 13 and the support plate 9; Step nine, pour concrete, and remove the formwork after the concrete reaches the design requirements. When pouring the stairs, the horizontal plane where the bottom of the riser template 8 of the higher step is located is used as the pouring standard for the lower step.

[0032] The above description is merely a detailed illustration of specific embodiments of the present invention and is not intended to limit the invention. Various substitutions, modifications, and improvements made by those skilled in the art without departing from the principles and scope of the present invention should be included within the protection scope of the present invention.

Claims

1. A construction method for one-time molding of an ultra-wide reinforced concrete staircase, characterized in that, Includes the following steps: Step 1: Pre-construction preparation, complete the layout of the staircase according to the design drawings; Step 2: Install the bottom formwork of each of the tread section (1), platform section (2), and stair beam (3), and connect them to form the bottom formwork of the staircase; install the side formwork of each of the tread section (1), platform section (2), and stair beam (3), and connect them to form the side formwork of the staircase; Step 3: Complete the binding of the steel mesh, so that the steel mesh is located on the bottom formwork of the staircase and between the two side formworks of the staircase; Step 4: Install the riser formwork (8) at the tread section (1) of the staircase, so that multiple riser formworks (8) at each tread section (1) are arranged side by side along the length of the tread section (1) and located above the steel mesh; Step 5: Install the support plate (9) on the side of each riser formwork (8) away from the tread formed by the riser formwork (8). Step 6: Install multiple support bases (10) side by side at the bottom of the support plate (9) along the length of the support plate (9); Step 7: Install multiple positioning clips (12) for limiting the support plate (9) side by side along the length of the support plate (9), with the positioning clips (12) and the support bases (10) staggered; Step 8: Install multiple connecting plates (13) side by side between the two side templates of each step section (1), so that each connecting plate (13) is installed on the top of the support plate (9) and connects the step templates (8) of the step section (1) to form a whole, with the connecting plates (13) and the positioning clips (12) staggered; Step 9: Pour concrete and remove the formwork after the concrete reaches the design requirements.

2. The construction method for one-time molding of an ultra-wide reinforced concrete staircase according to claim 1, characterized in that, In step two, the bottom template of the step section (1) is the bottom template of the step (6), the overall width of the bottom template of the step (6) is adapted to the width of the staircase, and the bottom template of the step (6) is installed according to a certain slope; the side template of the step section (1) is the side template of the step (7), and the two side templates of the step (7) are installed on both sides of the bottom template of the step (6) respectively, so that the bottom of the side template of the step (7) is fixedly connected to the top of the bottom template of the step (6).

3. The construction method for one-time molding of an ultra-wide reinforced concrete staircase according to claim 2, characterized in that, In step three, the steel mesh is formed by connecting horizontal and vertical steel bars. The steel mesh includes horizontal bars and vertical bars (11). Multiple horizontal bars at the step section (1) are arranged side by side along the length of the bottom template (6) of the step. Multiple vertical bars (11) at the step section (1) are arranged side by side between the two side templates (7) of the step.

4. The construction method for one-time molding of an ultra-wide reinforced concrete staircase according to claim 3, characterized in that, In step four, multiple kick templates (8) are installed side by side above the steel mesh along the length of the bottom template (6) of the step, so that the two ends of each kick template (8) are fixedly connected to the side of the two side templates (7) of the step respectively. Between two adjacent steps, the top of the kick template (8) of the lower step is not lower than the bottom of the kick template (8) of the higher step.

5. The construction method for one-time molding of an ultra-wide reinforced concrete staircase according to claim 4, characterized in that, In step five, the support plate (9) is made of wood. The support plate (9) and the kick template (8) are tied together with steel wire so that one side of the support plate (9) fits against the side of the kick template (8) away from the step formed by the kick template (8).

6. The construction method for one-time molding of an ultra-wide reinforced concrete staircase according to claim 5, characterized in that, In step six, the support base (10) includes vertical ribs (101) and horizontal ribs (102). The first end of the vertical rib (101) is vertically welded to the first end of the horizontal rib (102), so that the horizontal rib (102) is located at the bottom of the support plate (9) and the kick plate (8). The two ends of the horizontal rib (102) are far apart from each other. The first end of the horizontal rib (102) extends beyond the side of the support plate (9) away from the kick plate (8). The second end of the horizontal rib (102) extends beyond the inner side of the kick plate (8). The inner side of the kick plate (8) is the side of the step formed near the kick plate (8). The second end of the horizontal rib (102) is welded to the longitudinal rib (11) of the steel mesh, and the second end of the vertical rib (101) is welded to the longitudinal rib (11) of the steel mesh.

7. The construction method for one-time molding of an ultra-wide reinforced concrete staircase according to claim 6, characterized in that, In step six, the support base (10) is installed at the bottom of the support plate (9) by means of a pad (14). The cross section of the pad (14) is rectangular. The pad (14) is made of wood. The width of the pad (14) is adapted to the overall width of the support plate (9) and the kick plate (8). The pad (14) is stably connected to the support plate (9) and located at the bottom of the support plate (9). One side of the pad (14) is flush with the inner side of the kick plate (8). The horizontal rib (102) of the support base (10) is located at the bottom of the pad (14).

8. The construction method for one-time molding of an ultra-wide reinforced concrete staircase according to claim 7, characterized in that, In step seven, the positioning clip (12) is made of steel bars. The positioning clip (12) includes a positioning part (121) and a fixing part (122). The fixing part (122) is in the shape of a right angle L. The first end of the positioning part (121) is welded to the longitudinal bar (11) of the steel mesh, so that the positioning part (121) is located on the side of the support plate (9) away from the kick plate (8). The second end of the positioning part (121) extends to the top of the support plate (9). The fixing part (122) is then welded to the longitudinal bar (11) of the steel mesh. The first end of 22) is welded to the second end of the positioning part (121), so that the positioning part (121) and the fixing part (122) form an inverted U-shaped bayonet. The short side of the fixing part (122) is located on the top of the support plate (9), and the long side of the fixing part (122) is attached to the inner side of the kick template (8). The second end of the fixing part (122) is welded to the longitudinal bar (11) of the steel mesh, so that the support plate (9) and the kick template (8) are located in the bayonet of the positioning card (12).

9. The construction method for one-time molding of an ultra-wide reinforced concrete staircase according to claim 8, characterized in that, In step seven, the opening formed by the short side and the long side of the fixing part (122) is 120°-150°. The first end of the fixing part (122) is welded to the second end of the positioning part (121), so that the short side of the fixing part (122) is located on the top of the support plate (9), the long side of the fixing part (122) is obliquely set to the kick template (8), and the second end of the fixing part (122) is far away from the kick template (8). The second end of the fixing part (122) is welded to the longitudinal bar (11) of the steel mesh.

10. The construction method for one-time molding of an ultra-wide reinforced concrete staircase according to claim 9, characterized in that, In step eight, the connecting plate (13) is located between the two step side templates (7) of the step section (1). The connecting plate (13) is made of wood. The connecting plate (13) and the support plate (9) are fixed with iron nails. The connection part between the connecting plate (13) and the support plate (9) is the edge formed by the top of the support plate (9) and the side of the support plate (9) away from the kick template (8). The two ends of the connecting plate (13) are far apart from each other and are located on the support plate (9) at the bottom and top of the step section (1), respectively. Alternatively, a bevel is provided at the connection part between the support plate (9) and the connecting plate (13). The bevel is located at the top of the support plate (9) and away from the kick template (8). The bevel is formed by cutting the top of the support plate (9) obliquely towards the side of the support plate (9) away from the kick template (8).

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