Parameterization design method for horizontal concrete prefabricated stair mold

Abstract

The invention discloses a parameterization design method for a horizontal concrete prefabricated stair mold based on NX three-dimensional parameterization software. According to the method, a three-layer structure (a component assembly layer, a component assembly layer and a feature part layer) is established, assignment expressions of stair geometric parameters and mold parameters are set on the component layer, the component layer automatically generates the size of each component according to the expressions, and the component layer associates the component features with the component size expressions. According to the method, new mold design can be quickly generated by modifying basic parameters, frequent switching between deepening drawings and design software is avoided, the design efficiency and precision are improved, and the method is suitable for batch production of various similar stair specifications.

Description

Technical Field

[0001] This application relates to the field of prefabricated building design technology, specifically to a parametric design method for horizontal precast concrete staircase molds. Background Technology

[0002] Precast stairs are one of the important precast components in assembled concrete buildings. The main parameters of precast stairs include stair slab width, stair height, stair thickness, tread height, width, and number, high and low platform width and thickness, and lug length. Precast component processing plants need to customize high-precision stair molds when manufacturing precast stairs. Because building forms vary, stair parameters also differ in the design; therefore, precast plants actually need to manufacture stair molds with various parameters. Stair molds are divided into vertical molds and horizontal molds. Horizontal molds are widely used due to their ease of operation and lower cost amortization.

[0003] Traditional staircase mold design cannot achieve parametric design of staircases and has been gradually abandoned by the market. At present, the production of prefabricated staircases first requires processing molds according to the detailed drawings of the staircases. The molds are mainly made of welded plates, and concrete is poured after the welding is completed.

[0004] However, prefabricated stair molds contain numerous design details during mass production. If the design method of detailed drawings is still used, designers need to frequently switch between detailed drawings and design software to constantly check the various design details of the prefabricated stair, resulting in low product conversion efficiency. Summary of the Invention

[0005] This application provides a parametric design method for horizontal precast concrete stair molds, which solves the problem of frequent switching between detailed drawings and design software during the design process of assembled staircases.

[0006] The technical solution of this application is as follows: A parametric design method for horizontal precast concrete staircase molds, implemented using NX 3D parametric software, specifically includes the following steps: Step 1: Based on the assembly relationship of the horizontal precast concrete staircase mold, the horizontal precast concrete staircase mold is divided into several components, each component including several parts; the components include high-end platform end mold, high-end platform top mold, low-end platform end mold, low-end platform top mold, side mold, step bottom mold, lifting lug compensation component, lifting lug mold, archway, and support; Step 2: In NX, create the first layer of component assembly, the second layer of component assembly, and the third layer of feature parts in sequence according to the hierarchical relationship; where all components correspond to one component assembly layer, each component corresponds to one component assembly layer, and each part under each component corresponds to one feature part layer. Step 3: Establish the assignment expressions for the prefabricated staircase parameters in the component assembly layer; Step 4: Link the assignment expressions of the prefabricated staircase parameters in the component assembly layer to each component assembly layer, and establish the dimension expressions for each component; Step 5: Based on the assembly relationship of the horizontal precast concrete staircase mold, link the part features of each component to the component's dimension expression.

[0007] Furthermore, in step three, the prefabricated stair parameters include stair width W, stair height H, stair thickness h, number of steps s, step width Tw, upper platform width Gw, upper platform thickness Gh, lower platform width Dw, ​​lower platform thickness Dh, and lug length Dl.

[0008] Furthermore, the parameters of the prefabricated staircase also include the riser height Th and the stair inclination angle, calculated based on the assignment expressions of the stair flight height H, the tread width Tw, and the number of treads s. ; in, ; .

[0009] Furthermore, the precast staircase mold parameters include the thickness of the high-end platform end mold Gdh, the thickness of the lug mold Deh, the thickness of the low-end platform mold Ddh, the width of the archway Yw, the height of the archway Yh, the thickness of the side mold Ch, the thickness of the bottom mold panel of the step tread tbm, and the thickness of the bottom mold support plate of the step tread tbz.

[0010] Furthermore, in step four: The high-end platform end mold has height and length, and its dimensional expression is as follows: ; ; In the formula, a1011, These represent the height and length of the high-end platform end mold, respectively. The top mold of the high-end platform has a width, and its dimension expression is as follows: ; In the formula, This indicates the width of the top mold of the high-end platform; The lifting lug mold has height and length, and its dimensional expression is as follows: a4011=Gh; a4012=Gw; In the formula, a4011 and a4012 represent the height and length of the lifting lug mold, respectively; The low-end platform end mold has height and length, and its dimensional expression is as follows: ; ; In the formula, , These represent the height and length of the low-end platform end mold, respectively. The top mold of the low-end platform has length and width, and its dimensional expression is as follows: ; ; In the formula, and These represent the length and width of the top mold of the low-end platform, respectively.

[0011] Furthermore, in step four, the side mold has a first height and a second height on the lower platform side that match the height of the lower platform end mold and the length of the lower platform top mold, and their dimensional expressions are as follows: ; ; In the formula, and These represent the first and second heights of the side mold on the lower platform side, respectively. The side mold has a top edge length and a bottom edge length between the low-end platform and the high-end platform, and its dimensional expression is as follows: ; ; In the formula, and These respectively indicate that the side mold has a top edge length and a bottom edge length between the low-end platform and the high-end platform; The side mold has a third height at the archway, and its dimensional expression is as follows: ; In the formula, This indicates the third height of the side mold at the archway; The side mold has a fourth height and a fifth height on the high-end platform side, which match the lifting lug mold and the high-end platform end mold. The dimensional expressions are as follows: ; ; In the formula, and These represent the fourth and fifth heights of the side mold on the high-end platform side, respectively; The side mold has a sixth height at the edge of the high-end platform side, and its dimensional expression is as follows: .

[0012] Furthermore, in step four, the bottom mold of the step has a first-order width, a second-order width, and a first and second-order height on the lower platform side, and its dimensional expression is as follows: ; ; ; In the formula, , , These represent the first-order width, second-order width, and first and second-order height of the step bottom mold on the lower platform side, respectively. The step base mold includes a step base mold panel and a step base mold support plate; The step bottom mold panel has an extended width and an extended height between the low-end platform and the high-end platform, and its dimensional expression is as follows: ; ; In the formula, , These represent the extended width and extended height of the step bottom mold, respectively; The step bottom mold has a top step width on the high-end platform side, and its dimension expression is as follows: ; In the formula, This indicates the width of the top step of the tread mold on the high-end platform; The step bottom formwork support plate has a first width, a second width, and a first-order height between the first width and the second width on the lower platform side, and its dimensional expression is as follows: ; ; ; In the formula, , , These represent the first width, second width, and first step height of the step bottom formwork support plate on the lower platform side, respectively. The step bottom formwork support plate has a top edge extension length and a bottom edge extension length between the low-end platform and the high-end platform, and its dimensional expression is as follows: ; ; In the formula, , These represent the top edge extension length and bottom edge extension length of the step bottom mold support plate, respectively. The step bottom formwork support plate has a third width on the high-end platform side, and its dimension is expressed as follows: ; In the formula, This indicates the third width of the step bottom formwork support plate; The step bottom formwork support plate has an edge height on the side edge of the high-end platform, and its dimensional expression is as follows: ; In the formula, This indicates the edge height of the step bottom formwork support plate on the high-end platform side.

[0013] Furthermore, the thickness of the lifting lug compensation component is... Dll It has a height and a width, expressed as follows: a3011=Gh; a3012=Gw; In the formula, a3011 and a3012 represent the height and width of the lifting lug compensator, respectively.

[0014] Furthermore, several stiffening ribs are provided at intervals on the outer side of the side mold, and weight-reducing holes are provided in the non-casting space corresponding to the side mold and the bottom mold support plate of the step.

[0015] Due to the adoption of the above technical solution, the beneficial effects of this application are as follows: 1. This application, based on staircase parameters, flexibly constructs a fully fitted mold for horizontal precast concrete stairs. Specifically, this application establishes three hierarchical levels. The first level is the component assembly layer, which contains assignment expressions for the precast staircase parameters, directly determining the staircase's geometric parameters. Since these are assignment expressions, only the basic parameters of different precast stairs need to be modified to generate the corresponding mold parameters. The component assembly layer also includes mold parameters, including the tread base plate, support plate, and side molds. These parameters do not determine the staircase's shape but are fundamental to ensuring the mold parameters; they determine the mold thickness, hoisting position, and archway position, and are core to ensuring mold quality.

[0016] 2. This application establishes a sub-layer of the first layer on the second layer according to the assembly relationship; this sub-layer is the component layer. In the component layer, each part of the template is individually distinguished, and expressions for each dimension in the component are established based on the parameters of the first layer, forming a linkage mechanism. That is, when the parameters of the first layer are modified, the parameters of the second layer adaptively change. However, it should be noted that only the expressions in the second layer change; the mold model itself does not change. This is to facilitate modification of the mold style, as one type of staircase can correspond to different mold parameters.

[0017] 3. This application links each edge or angle to the corresponding component in the third-level part layer, thus separating the formula from the numerical value. This linking method facilitates numerical error correction and modification, and also forms a hierarchy to avoid parameter omissions. Attached Figure Description

[0018] The accompanying drawings, which are provided to further illustrate this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application.

[0019] Figure 1 This is an assembly diagram of the horizontal precast concrete staircase and its mold in this application; Figure 2 The front view of a horizontal precast concrete staircase mold; Figure 3 A top view of a horizontal precast concrete staircase mold; Figure 4 Left view of a horizontal precast concrete staircase mold; Figure 5 This is a schematic diagram of a high-end platform terminal module; Figure 6 This is a schematic diagram of the end mold dimensions for a high-end platform. Figure 7 This is a schematic diagram of the top mold for a high-end platform. Figure 8 This is a schematic diagram showing the dimensions of the top mold for a high-end platform. Figure 9 This is a schematic diagram of a low-end platform terminal module; Figure 10 This is a schematic diagram of the end mold dimensions for a low-end platform. Figure 11 This is a schematic diagram of the top mold of a low-end platform; Figure 12 This is a schematic diagram of the top mold dimensions for a low-end platform. Figure 13 This is a schematic diagram of the side mold; Figure 14 This is a schematic diagram of the side mold dimensions; Figure 15 This is a schematic diagram of the bottom mold of the step; Figure 16 This is a schematic diagram showing the dimensions of the bottom mold panel of the step; Figure 17 This is a schematic diagram showing the dimensions of the step bottom formwork support plate; Figure 18 A schematic diagram of the assembly of the lifting lug mold and lifting lug compensation components; Figure 19 This is a schematic diagram of the support; Figure 20 This is a schematic diagram of the lug mold; Figure 21This is a schematic diagram showing the dimensions of the lifting lug mold; Figure 22 This is a schematic diagram of the lifting lug compensation component; Figure 23 This is a schematic diagram showing the dimensions of the lifting lug compensation component; Figure 24 A diagram showing the hierarchical relationships between each layer; In the attached drawings: 1. High-end platform end mold; 2. High-end platform top mold; 3. Lifting lug compensation component; 4. Lifting lug mold; 5. Low-end platform end mold; 6. Low-end platform top mold; 7. Side mold; 8. Archway; 9. Step bottom mold; 10. Support; 101. High-end platform end mold; 201. High-end platform top mold; 501. Low-end platform end mold; 601. Low-end platform top mold; 701. Side mold panel; 901. Step bottom mold panel; 902. Step bottom mold support plate. Detailed Implementation

[0020] Based on the background technology, this application provides a parametric design method for horizontal precast concrete staircase molds. This method is implemented based on NX 3D parametric software and specifically includes the following steps: Step 1: Refer to the appendix Figure 1 Based on the assembly relationship of the horizontal precast concrete staircase mold, the horizontal precast concrete staircase mold is divided into several components, each component including several parts; the components include high-end platform end mold, high-end platform top mold, low-end platform end mold, low-end platform top mold, side mold, step bottom mold, lifting lug compensation component, lifting lug mold, archway, and support.

[0021] See appendix Figures 18-20 The lug mold is used to form the lugs. It is assembled on the high-end platform side and, together with the lug compensation component, serves as the casting mold for the lugs. The lug compensation component is a detachable mold. The lugs of the precast staircase can be positioned on the left or right edge of the high-end platform by assembling the lug compensation component on the right or left side. When the staircase lug is on the left, the lug compensation component is placed on the right side of the high-end platform; when the staircase lug is on the right, the lug compensation component is placed on the left. Its thickness is [not specified]. Dl The archway is designed to facilitate mold disassembly. The support is a fixture that supports the entire mold, placed below the side mold and the bottom tread mold. The support's dimensions are the outer circumference of the mold's bottom, and it connects to the edges on the third layer. To ensure the flatness and stability of the stair mold's bottom, a support is installed on the bottom side of the bottom tread mold. The support is a frame welded from standard channel steel according to the overall dimensions of the stair mold.

[0022] Horizontal precast concrete staircase molds are assembled into a whole from components. Specifically, they can be divided into the high-end platform side, the low-end platform side, and the transition section between them. The high-end platform side is the upper level, and the low-end platform side is the lower level. Both the high-end and low-end platform sides include top molds and end molds. The top mold is the template at the top of the horizontal mold, and the end molds are the templates at both ends of the horizontal mold. After pouring, the top and end molds become the connecting components of the staircase platform. Side molds are set as the end molds on both sides of the mold, and lifting lugs are arranged at intervals on the side molds. The bottom tread mold is used to form the steps. The bottom tread mold includes a panel and support plates. The panel forms the step structure, and the support plates support the panel. It should be noted that to prevent deformation in the middle of the panel, an additional support plate is added between the support plates at both ends. These are the various components of the mold. During concrete pouring, the components are assembled to perform their shaping function, and the assembled dimensions need to be synchronized.

[0023] Step Two: Refer to Appendix Figure 24 In NX, the first layer is the component assembly layer, the second layer is the component assembly layer, and the third layer is the feature part layer, which are established in a hierarchical manner. All components correspond to one component assembly layer, each component corresponds to one component assembly layer, and each part under each component corresponds to one feature part layer.

[0024] In this step, the hierarchical relationship refers to the relationship between the main layer and sub-layers. The main layer is the first layer, and the second layer is a sub-layer of the first layer. One component corresponds to one sub-layer. For example, the bottom mold of a step includes a panel and a support plate, but the panel and support plate are not further subdivided; the bottom mold of the step is a separate sub-layer. The feature part layer refers to the component's constituent features, such as the component's length, height, width, and thickness. Establishing the hierarchical relationship is to achieve parametric hierarchical classification. In the first layer, assignment expressions are established to directly control the prefabricated stair parameters and template parameters. The second layer constructs the template shape based on the assignment expressions of the first layer. The third layer uses part features to link the template shape, achieving parameter independence. The subordinate relationship between the parameters of the three layers ensures that changes in the staircase, template shape, and template size are independent of each other. The main layer will affect the changes in the sub-layers, but the sub-layers will not disturb the main layer. Changes in the main layer correspond to changes in the dimensional parameters of similar staircases in actual production, while changes in the sub-layers correspond to dimensional errors and mold optimization in actual production.

[0025] It should be noted that the expressions listed in the second layer are the core expressions of the component. These core expressions determine the component's outline and are the most efficient parameters for describing the component. A component contains many parts; for example, in the appendix... Figure 6The diagram shows the height and width of the high-end platform end mold. These height and width are relative to the high-end platform end mold as a whole. However, when reflected in a part, they can refer to the height and width of the inner side plate. Other protective plates surrounding the inner side plate can be obtained by combining the thickness of the high-end platform end mold with its height and width. Other components follow the same rule. That is, each part of the component is a third-level module, where the dimensions of each part are linked to the expressions of the first two levels.

[0026] Step 3: Establish the assignment expressions for the prefabricated staircase parameters and the prefabricated staircase mold parameters in the component assembly layer.

[0027] In step three, the parameters of the prefabricated staircase include the width W of the stair section, the height H of the stair section, the thickness h of the stair section, the number of steps s, the width Tw of the step, the width Gw of the high-end platform, the thickness Gh of the high-end platform, the width Dw of the low-end platform, the thickness Dh of the low-end platform, and the length Dl of the hanging lug.

[0028] The parameters for prefabricated stairs also include the riser height Th and the stair inclination angle, calculated using the assignment expressions based on the stair flight height H, tread width Tw, and number of treads s. ; in, ; .

[0029] The precast staircase mold parameters include the thickness of the high-end platform end mold Gdh, the thickness of the hanging lug mold Deh, the thickness of the low-end platform mold Ddh, the width of the archway Yw, the height of the archway Yh, the thickness of the side mold Ch, the thickness of the bottom mold panel of the step tread tbm, and the thickness of the bottom mold support plate of the step tread tbz.

[0030] The parameters of the precast staircase determine the external dimensions of the mold. The parameters of the precast staircase mold are used to determine the mold shape and the basic parameters for mold installation, hoisting, and ensuring the quality of casting.

[0031] Step 4: Link the assignment expressions of the prefabricated staircase parameters in the component assembly layer to each component assembly layer, and establish the dimension expressions for each component; Step 5: Based on the assembly relationship of the horizontal precast concrete staircase mold, link the part features of each component to the component's dimension expression.

[0032] In step four: See appendix Figures 1-8 The high-end platform end mold has height and length, and its dimension expression is as follows: ; ; In the formula, a1011, These represent the height and length of the high-end platform end mold, respectively. The top mold of the high-end platform has a width, and its dimension expression is as follows: ; In the formula, This indicates the width of the top mold of the high-end platform; See appendix Figures 1-4 9~12, the low-end platform end mold has height and length, and its dimension expression is as follows: ; ; In the formula, , These represent the height and length of the low-end platform end mold, respectively. The top mold of the low-end platform has length and width, and its dimensional expression is as follows: ; ; In the formula, and These represent the length and width of the top mold of the low-end platform, respectively.

[0033] See appendix Figures 1-4 13, 14, In step four, the side mold has a first height and a second height on the low-end platform side that match the height of the low-end platform end mold and the length of the low-end platform top mold, and its dimensional expression is as follows: ; ; In the formula, and These represent the first and second heights of the side mold on the lower platform side, respectively. The side mold has a top edge length and a bottom edge length between the low-end platform and the high-end platform, and its dimensional expression is as follows: ; ; In the formula, and These respectively indicate that the side mold has a top edge length and a bottom edge length between the low-end platform and the high-end platform; The side mold has a third height at the archway, and its dimensional expression is as follows: ; In the formula, This indicates the third height of the side mold at the archway; The side mold has a fourth height and a fifth height on the high-end platform side, which match the lifting lug mold and the high-end platform end mold. The dimensional expressions are as follows: ; ; In the formula, and These represent the fourth and fifth heights of the side mold on the high-end platform side, respectively.

[0034] The fourth height is the step height corresponding to the bottom of the mountain pass leading to the high-end platform, that is, the height of the step preceding the high-end platform.

[0035] The side mold has a sixth height at the edge of the high-end platform side, and its dimensional expression is as follows: .

[0036] See appendix Figures 1-4 15~17, In step four, the bottom mold of the step has a first-order width, a second-order width, and a first and second-order height on the lower platform side, and its dimensional expression is as follows: ; ; ; In the formula, , , These represent the first-order width, second-order width, and first and second-order height of the step bottom mold on the lower platform side, respectively. The step base mold includes a step base mold panel and a step base mold support plate; The step bottom mold panel has an extended width and an extended height between the low-end platform and the high-end platform, and its dimensional expression is as follows: ; ; In the formula, , These represent the extended width and extended height of the step bottom mold, respectively; The step bottom mold has a top step width on the high-end platform side, and its dimension expression is as follows: ; In the formula, This indicates the width of the top step of the tread mold on the high-end platform; The step bottom formwork support plate has a first width, a second width, and a first-order height between the first width and the second width on the lower platform side, and its dimensional expression is as follows: ; ; ; In the formula, , , These represent the first width, second width, and first step height of the step bottom formwork support plate on the lower platform side, respectively. The step bottom formwork support plate has a top edge extension length and a bottom edge extension length between the low-end platform and the high-end platform, and its dimensional expression is as follows: ; ; In the formula, , These represent the top edge extension length and bottom edge extension length of the step bottom mold support plate, respectively. The step bottom formwork support plate has a third width on the high-end platform side, and its dimension is expressed as follows: ; In the formula, This indicates the third width of the step bottom formwork support plate; The step bottom formwork support plate has an edge height on the side edge of the high-end platform, and its dimensional expression is as follows: ; In the formula, This indicates the edge height of the step bottom formwork support plate on the high-end platform side.

[0037] See appendix Figures 1-4 22, 23, The thickness of the lifting lug compensator is the same as the length of the lifting lug, and the thickness of the lifting lug compensator is... Dll It has a height and a width, expressed as follows: a3011=Gh; a3012=Gw; In the formula, a3011 and a3012 represent the height and width of the lifting lug compensator, respectively.

[0038] See appendix Figures 1-4 Several stiffening ribs are provided at intervals on the outer side of the side mold, and weight reduction holes are provided in the non-casting space corresponding to the side mold and the bottom mold support plate of the step.

[0039] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0040] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A parametric design method for a horizontal precast concrete staircase mold, characterized in that, This method is implemented based on NX 3D parametric software and includes the following steps: Step 1: Based on the assembly relationship of the horizontal precast concrete staircase mold, the horizontal precast concrete staircase mold is divided into several components, each component including several parts; the components include high-end platform end mold, high-end platform top mold, low-end platform end mold, low-end platform top mold, side mold, step bottom mold, lifting lug compensation component, lifting lug mold, archway, and support; Step 2: In NX, create the first layer of component assembly, the second layer of component assembly, and the third layer of feature parts in sequence according to the hierarchical relationship; where all components correspond to one component assembly layer, each component corresponds to one component assembly layer, and each part under each component corresponds to one feature part layer. Step 3: Establish the assignment expressions for the prefabricated staircase parameters in the component assembly layer; Step 4: Link the assignment expressions of the prefabricated staircase parameters in the component assembly layer to each component assembly layer, and establish the dimension expressions for each component; Step 5: Based on the assembly relationship of the horizontal precast concrete staircase mold, link the part features of each component to the component's dimension expression.

2. The parametric design method for a horizontal precast concrete staircase mold according to claim 1, characterized in that, In step three, the prefabricated staircase parameters include staircase width W, staircase height H, staircase thickness h, number of steps s, step width Tw, upper landing width Gw, upper landing thickness Gh, lower landing width Dw, ​​lower landing thickness Dh, and lug length. Dl .

3. The parametric design method for a horizontal precast concrete staircase mold according to claim 2, characterized in that, The parameters for prefabricated stairs also include the riser height Th and the stair inclination angle, calculated using the assignment expressions based on the stair flight height H, tread width Tw, and number of treads s. ; in, ; 。 4. The parametric design method for a horizontal precast concrete staircase mold according to claim 2, characterized in that, The precast staircase mold parameters include the thickness of the high-end platform end mold Gdh, the thickness of the hanging lug mold Deh, the thickness of the low-end platform mold Ddh, the width of the archway Yw, the height of the archway Yh, the thickness of the side mold Ch, the thickness of the bottom mold panel of the step tread tbm, and the thickness of the bottom mold support plate of the step tread tbz.

5. The parametric design method for a horizontal precast concrete staircase mold according to claim 4, characterized in that, In step four: The high-end platform end mold has height and length, and its dimensional expression is as follows: ； ； In the formula, a1011, These represent the height and length of the high-end platform end mold, respectively. The top mold of the high-end platform has a width, and its dimension expression is as follows: ； In the formula, This indicates the width of the top mold of the high-end platform; The lifting lug mold has height and length, and its dimensional expression is as follows: a4011=Gh; a4012=Gw; In the formula, a4011 and a4012 represent the height and length of the lifting lug mold, respectively; The low-end platform end mold has height and length, and its dimensional expression is as follows: ； ； In the formula, , These represent the height and length of the low-end platform end mold, respectively. The top mold of the low-end platform has length and width, and its dimensional expression is as follows: ； ； In the formula, and These represent the length and width of the top mold of the low-end platform, respectively.

6. The parametric design method for a horizontal precast concrete staircase mold according to claim 5, characterized in that, In step four, the side mold has a first height and a second height on the lower platform side that match the height of the lower platform end mold and the length of the lower platform top mold, and its dimensional expression is as follows: ； ； In the formula, and These represent the first and second heights of the side mold on the lower platform side, respectively. The side mold has a top edge length and a bottom edge length between the low-end platform and the high-end platform, and its dimensional expression is as follows: ； ； In the formula, and These respectively indicate that the side mold has a top edge length and a bottom edge length between the low-end platform and the high-end platform; The side mold has a third height at the archway, and its dimensional expression is as follows: ； In the formula, This indicates the third height of the side mold at the archway; The side mold has a fourth height and a fifth height on the high-end platform side, which match the lifting lug mold and the high-end platform end mold. The dimensional expressions are as follows: ； ； In the formula, and These represent the fourth and fifth heights of the side mold on the high-end platform side, respectively; The side mold has a sixth height at the edge of the high-end platform side, and its dimensional expression is as follows: 。 7. The parametric design method for a horizontal precast concrete staircase mold according to claim 6, characterized in that, In step four, the bottom mold of the step has a first-order width, a second-order width, and a first and second-order height on the lower platform side, and its dimensional expression is as follows: ； ； ； In the formula, , , These represent the first-order width, second-order width, and first and second-order height of the step bottom mold on the lower platform side, respectively. The step base mold includes a step base mold panel and a step base mold support plate; The step bottom formwork panel has an extended width and an extended height between the low-end platform and the high-end platform, and its dimensional expression is as follows: ； ； In the formula, , These represent the extended width and extended height of the step bottom mold, respectively; The step bottom mold has a top step width on the high-end platform side, and its dimension expression is as follows: ； In the formula, This indicates the width of the top step of the tread mold on the high-end platform; The step bottom formwork support plate has a first width, a second width, and a first-order height between the first width and the second width on the lower platform side, and its dimensional expression is as follows: ； ； ； In the formula, , , These represent the first width, second width, and first step height of the step bottom formwork support plate on the lower platform side, respectively. The step bottom formwork support plate has a top edge extension length and a bottom edge extension length between the low-end platform and the high-end platform, and its dimensional expression is as follows: ； ； In the formula, , These represent the top edge extension length and bottom edge extension length of the step bottom mold support plate, respectively. The step bottom formwork support plate has a third width on the high-end platform side, and its dimension is expressed as follows: ； In the formula, This indicates the third width of the step bottom formwork support plate; The step bottom formwork support plate has an edge height on the side edge of the high-end platform, and its dimensional expression is as follows: ； In the formula, This indicates the edge height of the step bottom formwork support plate on the high-end platform side.

8. The parametric design method for a horizontal precast concrete staircase mold according to claim 7, characterized in that, The thickness of the lifting lug compensation component is Dll It has a height and a width, expressed as follows: a3011=Gh; a3012=Gw; In the formula, a3011 and a3012 represent the height and width of the lifting lug compensator, respectively.

9. The parametric design method for a horizontal precast concrete staircase mold according to claim 1, characterized in that, Several stiffening ribs are provided at intervals on the outer side of the side mold, and weight reduction holes are provided in the non-casting space corresponding to the side mold and the bottom mold support plate of the step.

Images