Prestressed self-supporting reinforced concrete thick plate construction simulation calculation method

Abstract

The invention provides a construction simulation calculation method for a prestressed self-supporting reinforced concrete thick plate, which comprises the following steps of: performing simulation calculation analysis on bearing states of a first pouring layer support template, a first pouring layer and a second pouring layer in different construction stages according to construction procedures of the prestressed self-supporting reinforced concrete thick plate, and guiding and optimizing a construction scheme. The thickness of a first-layer pouring floor slab is effectively reduced, the construction load borne by a lower floor system during construction of an upper thick plate conversion layer is reduced, and time and cost consumed by setting construction temporary support measures are reduced; the problems of formwork erecting, steel bar installation, mass concrete pouring and the like in the thick plate construction process are well solved, the construction period is effectively shortened, the construction cost is greatly reduced, the engineering safety and quality are guaranteed, and comprehensive benefits are obvious.

Description

Technical Field

[0001] This invention relates to the field of building structure technology, and to a construction simulation calculation method for prestressed self-supporting reinforced concrete thick slabs that utilizes the prestress set in the components themselves to overcome the self-weight of the components and achieve self-support. Background Technology

[0002] Rapid urbanization is accompanied by iterative advancements in engineering and construction technologies. Modern buildings, in addition to serving as residences and offices, also integrate functions such as public transportation and large-scale shopping malls. When the columns and shear walls of upper and lower floors of a building are misaligned (for example, a large-scale shopping mall at the bottom and a shear wall structure residential building above), a structural layer is needed in the middle to support the upper and lower floors and transfer the enormous load of the upper tower. This structural layer can be a very thick reinforced concrete slab, called a "transfer slab" or "thick slab," characterized by extremely high stiffness and load-bearing capacity.

[0003] Thick slabs are a crucial structural component in this type of project. To ensure sufficient space for the lower commercial floors and basement to fulfill their architectural functions, a common approach is to have framed columns at the bottom and a transfer slab above. Residential towers or other structural components discontinuous with the lower framed columns are then designed above the transfer slab. This type of structure is most common in transit-oriented development (TOD) projects in large cities, integrating residential, office, and public transportation functions into a single building by using thick slabs to provide load-bearing capacity.

[0004] Currently, the problems with thick slab construction are the enormous amount of concrete required for the slabs themselves, making it difficult to pour them all at once; at the same time, the weight of the thick slabs places high demands on the formwork support system during construction. The industry urgently needs to propose a new solution that, based on the layered pouring process of thick slabs, simulates and analyzes the load-bearing state at different construction stages to guide and optimize construction plans. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a construction simulation calculation method for prestressed self-supporting reinforced concrete thick slabs, which can simulate and analyze the load-bearing state of different construction stages before layered construction, thereby optimizing the construction plan.

[0006] The technical solution adopted by this invention to solve the technical problem is as follows: A simulation calculation method for the construction of prestressed self-supporting reinforced concrete thick slabs, the method comprising the following steps: S1. Based on the plate thickness and load data, obtain the thickness of the first pouring layer, the second pouring layer, the third pouring layer, and the amount of reinforcement at the bottom of the first pouring layer. S2. Determine the self-weight of the first pouring layer based on the thickness of the first pouring layer and the amount of reinforcement in the bottom slab of the first pouring layer. Determine the support formwork data for the first pouring layer based on the self-weight of the first pouring layer and the construction load of the first pouring layer. The support formwork data for the first pouring layer includes the number and arrangement of the support formwork and the number and arrangement of the support members. S3. Arrange the support members according to the formwork data of the first pouring layer, and perform load-bearing capacity simulation analysis on the support to calculate the load-bearing capacity and stability of each support member; when the support members cannot meet the safety requirements, rearrange the support members and perform load-bearing capacity simulation analysis on the support again until all support members meet the load-bearing capacity and stability requirements. S4. Based on the self-weight of the first pouring layer, the self-weight of the supporting formwork and the self-weight of the supporting members, and the construction load of the first pouring layer, verify the bearing capacity and deformation of the floor slab below the supporting members of the supporting formwork; if the floor slab below cannot meet the bearing capacity and deformation requirements, set up temporary construction support measures at the bottom of the floor slab below until the bearing capacity and deformation of the floor slab below meet the requirements. S5. The reinforcement data on the first pouring layer is calculated based on the self-weight of the first pouring layer, the self-weight of the second pouring layer, and the construction load of the second pouring layer. The reinforcement data on the first pouring layer includes the number of longitudinal reinforcement bars on the top surface of the first pouring layer, the number of prestressed reinforcement bars in the first pouring layer, and the model of prestressed anchorages in the first pouring layer. The prestressed reinforcement bars in the first pouring layer are used to balance the self-weight of the first pouring layer and the construction load of the first pouring layer, as well as the self-weight of the second pouring layer and the construction load of the second pouring layer. S6. Based on the self-weight of the first pouring layer, the self-weight of the second pouring layer, the anti-slip bearing capacity and temperature stress of the interface between the first and second pouring layers, perform anti-slip analysis and temperature stress analysis on the interface between the second pouring layer and the first pouring layer; if the requirements are not met, adjust the reinforcement data on the first pouring layer and add vertical ties until the analysis results meet the requirements. S7. After the construction of the first and second pouring layers is completed, the reinforcement data of the second pouring layer is calculated based on the self-weight of the first pouring layer, the self-weight of the second pouring layer, the self-weight of the third pouring layer, and the construction load of the third pouring layer. The reinforcement data of the second pouring layer includes the number of longitudinal reinforcement bars at the top of the second pouring layer. The prestressed reinforcement bars of the first pouring layer are used to balance the self-weight of the first pouring layer, the self-weight of the second pouring layer, the self-weight of the third pouring layer, and the construction load of the first pouring layer, the construction load of the second pouring layer, and the construction load of the third pouring layer. S8. Based on the self-weight of the first pouring layer, the self-weight of the second pouring layer, the self-weight of the third pouring layer, the anti-slip bearing capacity and temperature stress of the interface between the second and third pouring layers, perform anti-slip analysis and temperature stress analysis on the interface between the third pouring layer and the second pouring layer; if the requirements are not met, adjust the reinforcement data on the second pouring layer and add vertical ties until the analysis results meet the requirements; S9. Based on the self-weight of the first pouring layer, the self-weight of the second pouring layer, the self-weight of the third pouring layer, and the construction load on the third pouring layer during the construction process, simulate and calculate the change requirements of the tension force data of the prestressed steel bars in the first pouring layer, and use this as the basis and technical parameters for controlling the prestressing tension during the construction process.

[0007] Furthermore, in steps S6 and S8, the anti-slip analysis of the overlapping interface is specifically performed as follows: Determine whether the horizontal shear force at the interface between the old and new concrete meets the bearing capacity and deformation requirements of the subsequent pouring layer. Determine whether the pressure or tension generated by the bending moment on the cross section under the ultimate bearing capacity state of the horizontal shear force meets the bearing capacity and deformation requirements of the post-cast layer construction.

[0008] Furthermore, based on the plate thickness and load data, the thickness of the first pouring layer is 0.3H, the thickness of the second pouring layer is 0.25H, and the thickness of the third pouring layer is 0.45H, where H is the overall thickness of the plate.

[0009] Furthermore, the self-weight of the first pouring layer, the self-weight of the second pouring layer, and the self-weight of the third pouring layer are 26 KN / ㎡, and the construction load on the first pouring layer, the second pouring layer, and the third pouring layer is 10 KN / ㎡.

[0010] Furthermore, in step S5, the calculation of the reinforcement data on the first pouring layer based on the self-weight of the first pouring layer, the self-weight of the second pouring layer, and the construction load of the second pouring layer specifically includes: balancing the self-weight of the first pouring layer by using the prestressed reinforcement of the first pouring layer, and balancing the increasing weight of concrete during the pouring of the second pouring layer by using the prestressed reinforcement of the first pouring layer. In step S7, the calculation of the reinforcement data on the second pouring layer based on the self-weight of the first pouring layer, the self-weight of the second pouring layer, the self-weight of the third pouring layer, and the construction load of the third pouring layer specifically includes: when the second pouring layer is poured to 90% of the design strength, the requirement of the self-weight of the first pouring layer and the self-weight of the second pouring layer on the top reinforcement of the second pouring layer is simulated and calculated. In step S9, the simulation results of prestressing tension during the pouring of the first, second, and third pouring layers are reviewed to obtain the control values ​​of the number of prestressed steel bars and tension force in the first pouring layer, and the model of the prestressed anchorage in the first pouring layer is adjusted to prepare for construction.

[0011] Compared with existing technologies, the beneficial effects of this technical solution are as follows: Based on the construction procedures of prestressed self-supporting reinforced concrete thick slabs, the load-bearing state of the first pouring layer support formwork, the first pouring layer, and the second pouring layer in different construction stages is simulated and calculated for analysis, which guides and optimizes the construction plan, effectively reduces the thickness of the first pouring floor slab, and lowers the temporary load-bearing requirements of the lower floor slab; it effectively solves the problems of formwork support, reinforcement installation, and large-volume concrete pouring in the construction process of thick slabs, effectively shortens the construction period, thereby significantly reducing construction costs, ensuring project safety and quality, and achieving significant comprehensive benefits. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the supporting formwork and supporting rods in the construction simulation calculation method for prestressed self-supporting reinforced concrete thick slabs of the present invention.

[0013] Figure 2 This is a schematic diagram of the first pouring layer in the construction simulation calculation method for prestressed self-supporting reinforced concrete thick slabs of the present invention.

[0014] Figure 3 This is a schematic diagram of the second pouring layer in the construction simulation calculation method for prestressed self-supporting reinforced concrete thick slabs of the present invention.

[0015] Figure 4 This is a schematic diagram of the third pouring layer in the construction simulation calculation method for prestressed self-supporting reinforced concrete thick slabs of the present invention.

[0016] The components represented by each number in the diagram are listed below: 1—Thick plate; 11—Bottom longitudinal reinforcement of thick plate; 12—Prestressed steel reinforcement set in the first pouring layer; 13—Tie bar inside thick plate; 14—Prestressed anchor; 15—Top longitudinal reinforcement of thick plate. 2—Lower floor slab, 3—Supporting formwork, 4—Supporting members; A—First pouring layer, B—Second pouring layer, C—Third pouring layer; A1—Top longitudinal reinforcement of the first pouring layer, B1—Top longitudinal reinforcement of the second pouring layer, B2—Interface between the first and second pouring layers, C1—Interface between the second and third pouring layers. GA—Dead and live loads during the first pouring stage; GB—Dead and live loads during the second pouring stage; GC—Dead and live loads during the third pouring stage; G1—Dead and live loads transferred from the supports to the lower floor slab. PGA1—Equivalent load generated by applying prestress to the first pouring layer; PMA1—Eccentric bending moment generated by applying prestress to the first pouring layer; PN16—Prestress; VAB, VBC—Horizontal shear force at the composite interface; P1—Vertical load borne by the thick plate and transmitted from the superstructure; M1—Bending moment borne by the thick plate and transmitted from the superstructure; V1—Horizontal load borne by the thick plate and transmitted from the superstructure. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this invention clearer and more explicit, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0018] In the description of this invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," and "right," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the 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, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. When a component is referred to as being "fixed to" or "set on" another element, it can be directly on the other component or there may be an intervening component. When a component is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intervening component. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0020] Rapid urbanization is accompanied by iterative advancements in engineering and construction technologies. Modern buildings, in addition to serving as residences and offices, also integrate functions such as public transportation and large-scale shopping malls. When the columns and shear walls of the upper and lower parts of a building are not aligned (for example, a large-scale shopping mall at the bottom and a shear wall structure residential building at the top), a structural layer is needed in the middle to connect the upper and lower sections and transfer the enormous load of the upper tower. This structural layer can be a very thick reinforced concrete slab, called a "transfer slab" or "thick slab," characterized by extremely high stiffness and load-bearing capacity.

[0021] Thick slabs are a crucial structural component in this type of project. To ensure sufficient space for the lower commercial floors and basement to fulfill their architectural functions, a common approach is to have framed columns at the bottom and a transfer slab above. Residential towers or other structural components discontinuous with the lower framed columns are then designed above the transfer slab. This type of structure is most common in transit-oriented development (TOD) projects in large cities, integrating residential, office, and public transportation functions into a single building by using thick slabs to provide load-bearing capacity.

[0022] Currently, the problems with thick slab construction are the enormous amount of concrete required for the slabs themselves, making it difficult to pour them all at once; at the same time, the weight of the thick slabs places high demands on the formwork support system during construction. The industry urgently needs to propose a new solution that, based on the layered pouring process of thick slabs, simulates and analyzes the load-bearing state at different construction stages to guide and optimize construction plans.

[0023] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in order to solve the above problems, the present invention provides a construction simulation calculation method for prestressed self-supporting reinforced concrete thick slabs, including the following steps: S1. Based on the plate thickness and load data, obtain the thickness of the first pouring layer, the second pouring layer, the third pouring layer, and the amount of reinforcement at the bottom of the first pouring layer. S2. Determine the self-weight of the first pouring layer based on the thickness of the first pouring layer and the amount of reinforcement in the bottom slab of the first pouring layer. Determine the support formwork data for the first pouring layer based on the self-weight of the first pouring layer and the construction load of the first pouring layer. The support formwork data for the first pouring layer includes the number and arrangement of the support formwork and the number and arrangement of the support members. S3. Arrange the support members according to the formwork data of the first pouring layer, and perform load-bearing capacity simulation analysis on the support to calculate the load-bearing capacity and stability of each support member; when the support members cannot meet the safety requirements, rearrange the support members and perform load-bearing capacity simulation analysis on the support again until all support members meet the load-bearing capacity and stability requirements. S4. Based on the self-weight of the first pouring layer, the self-weight of the supporting formwork and the self-weight of the supporting members, and the construction load of the first pouring layer, verify the bearing capacity and deformation of the floor slab below the supporting members of the supporting formwork; if the floor slab below cannot meet the bearing capacity and deformation requirements, set up temporary construction support measures at the bottom of the floor slab below until the bearing capacity and deformation of the floor slab below meet the requirements. S5. The reinforcement data on the first pouring layer is calculated based on the self-weight of the first pouring layer, the self-weight of the second pouring layer, and the construction load of the second pouring layer. The reinforcement data on the first pouring layer includes the number of longitudinal reinforcement bars on the top surface of the first pouring layer, the number of prestressed reinforcement bars in the first pouring layer, and the model of prestressed anchorages in the first pouring layer. The prestressed reinforcement bars in the first pouring layer are used to balance the self-weight of the first pouring layer and the construction load of the first pouring layer, as well as the self-weight of the second pouring layer and the construction load of the second pouring layer. S6. Based on the self-weight of the first pouring layer, the self-weight of the second pouring layer, the anti-slip bearing capacity and temperature stress of the interface between the first and second pouring layers, perform anti-slip analysis and temperature stress analysis on the interface between the second pouring layer and the first pouring layer; if the requirements are not met, adjust the reinforcement data on the first pouring layer and add vertical ties until the analysis results meet the requirements. S7. After the construction of the first and second pouring layers is completed, the steel reinforcement data on the second pouring layer is calculated based on the self-weight of the first pouring layer, the self-weight of the second pouring layer, the self-weight of the third pouring layer, and the construction load of the third pouring layer. The steel reinforcement data on the second pouring layer is the number of longitudinal steel bars at the top of the second pouring layer. The prestressed steel bars in the first pouring layer are used to balance the self-weight of the first pouring layer, the self-weight of the second pouring layer, the self-weight of the third pouring layer, and the construction load of the first pouring layer, the construction load of the second pouring layer, and the construction load of the third pouring layer. S8. Based on the self-weight of the first pouring layer, the self-weight of the second pouring layer, the self-weight of the third pouring layer, the anti-slip bearing capacity and temperature stress of the interface between the second and third pouring layers, perform anti-slip analysis and temperature stress analysis on the interface between the third pouring layer and the second pouring layer; if the requirements are not met, adjust the reinforcement data on the second pouring layer and add vertical ties until the analysis results meet the requirements; S9. Based on the self-weight of the first pouring layer, the self-weight of the second pouring layer, the self-weight of the third pouring layer, and the construction load on the third pouring layer during the construction process, simulate and calculate the change requirements of the tension force data of the prestressed steel bars in the first pouring layer, and use this as the basis and technical parameters for controlling the prestressing tension during the construction process.

[0024] Based on the above technical solution, and according to the construction procedure of prestressed self-supporting reinforced concrete thick slabs, the load-bearing state of the first pouring layer support formwork, the first pouring layer, and the second pouring layer in different construction stages is simulated and calculated. This guides and optimizes the construction plan, effectively reducing the thickness of the first pouring slab and lowering the temporary load-bearing requirements of the lower floor slab. It effectively solves the problems of formwork support, reinforcement installation, and large-volume concrete pouring during the construction of thick slabs, effectively shortens the construction period, thereby significantly reducing construction costs, ensuring project safety and quality, and achieving significant comprehensive benefits.

[0025] exist Figure 1 , Figure 2 , Figure 3 , Figure 4It should be further explained that the post-cast layer includes the second and third cast layers, the overlapping interface includes the overlapping interface between the first and second cast layers, the overlapping interface between the second and third cast layers, and the top longitudinal reinforcement includes the top longitudinal reinforcement of the first cast layer and the top longitudinal reinforcement of the second cast layer.

[0026] Preferably, in step S1, based on the plate thickness and load data, the thickness of the first pouring layer is determined to be 0.3H, the thickness of the second pouring layer is 0.25H, and the thickness of the third pouring layer is 0.45H, where H is the overall thickness of the plate. The proportional relationship between the thickness of each layer and the total thickness is empirical data summarized after hundreds of simulation calculations and analyses.

[0027] Specifically, the weight of the first pouring layer, the self-weight of the first pouring layer, the self-weight of the second pouring layer, and the self-weight of the third pouring layer is 26 KN / ㎡, and the construction load on the first pouring layer, the second pouring layer, and the third pouring layer is 10 KN / ㎡.

[0028] Preferably, in step S5, the calculation of the reinforcement data on the first pouring layer based on the self-weight of the first pouring layer, the self-weight of the second pouring layer, and the construction load of the second pouring layer specifically includes: balancing the self-weight of the first pouring layer with the prestressed reinforcement of the first pouring layer, and balancing the increasing weight of concrete during the pouring of the second pouring layer with the prestressed reinforcement of the first pouring layer. In step S7, the calculation of the reinforcement data on the second pouring layer based on the self-weight of the first pouring layer, the self-weight of the second pouring layer, the self-weight of the third pouring layer, and the construction load of the third pouring layer specifically includes: when the second pouring layer is poured to 90% of the design strength, the requirement of the self-weight of the first pouring layer and the self-weight of the second pouring layer on the top reinforcement of the second pouring layer is simulated and calculated. In step S9, the simulation results of prestressing tension during the pouring of the first, second, and third pouring layers are reviewed to obtain the number of prestressed steel bars and the control value of tension force for the first pouring layer; the model of the prestressed anchorage for the first pouring layer is adjusted to prepare for construction.

[0029] Preferably, in steps S6 and S8, the anti-slip analysis of the overlapping interface specifically involves: Determine whether the horizontal shear force at the interface between the old and new concrete meets the bearing capacity and deformation requirements of the subsequent pouring layer. Determine whether the pressure or tension generated by the bending moment on the cross section under the ultimate bearing capacity state of the horizontal shear force meets the bearing capacity and deformation requirements of the post-cast layer construction.

[0030] Based on the above technical solution, by analyzing the stress on the contact surface of the composite interface, the composite interface between the first and second pouring layers, and the composite interface between the second and third pouring layers can be analyzed to ensure that the construction of the composite interface meets the requirements.

[0031] It should be understood that the application of the present invention is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A method for simulating and calculating the construction of prestressed self-supporting reinforced concrete thick slabs, characterized in that, Includes the following steps: S1. Based on the plate thickness and load data, obtain the thickness of the first pouring layer, the second pouring layer, the third pouring layer, and the amount of reinforcement at the bottom of the first pouring layer. S2. Determine the self-weight of the first pouring layer based on the thickness of the first pouring layer and the amount of reinforcement in the bottom slab of the first pouring layer. Determine the support formwork data for the first pouring layer based on the self-weight of the first pouring layer and the construction load of the first pouring layer. The support formwork data for the first pouring layer includes the number and arrangement of the support formwork and the number and arrangement of the support members. S3. Arrange support members according to the formwork data of the first pouring layer, and perform load-bearing capacity simulation analysis on the support to calculate the load-bearing capacity and stability of each support member; When the support members fail to meet the safety requirements, the support members are rearranged and the support bearing capacity simulation analysis is performed again until all support members meet the bearing capacity and stability requirements. S4. Based on the self-weight of the first pouring layer, the self-weight of the supporting formwork and the self-weight of the supporting members, and the construction load of the first pouring layer, verify the bearing capacity and deformation of the floor slab below the supporting members of the supporting formwork; if the floor slab below cannot meet the bearing capacity and deformation requirements, set up temporary construction support measures at the bottom of the floor slab below until the bearing capacity and deformation of the floor slab below meet the requirements. S5. The reinforcement data on the first pouring layer is calculated based on the self-weight of the first pouring layer, the self-weight of the second pouring layer, and the construction load of the second pouring layer. The reinforcement data on the first pouring layer includes the number of longitudinal reinforcement bars on the top surface of the first pouring layer, the number of prestressed reinforcement bars in the first pouring layer, and the model of the prestressed anchorage in the first pouring layer. The prestressed reinforcement bars in the first pouring layer are used to balance the self-weight of the first pouring layer and the self-weight of the second pouring layer, as well as the construction load of the first pouring layer and the construction load of the second pouring layer. S6. Based on the self-weight of the first pouring layer, the self-weight of the second pouring layer, the anti-slip bearing capacity and temperature stress of the interface between the first and second pouring layers, perform anti-slip analysis and temperature stress analysis on the interface between the second pouring layer and the first pouring layer; if the requirements are not met, adjust the reinforcement data on the first pouring layer and add vertical ties until the analysis results meet the requirements. S7. After the construction of the first and second pouring layers is completed, the steel reinforcement data on the second pouring layer is calculated based on the self-weight of the first pouring layer, the self-weight of the second pouring layer, the self-weight of the third pouring layer, and the construction load of the third pouring layer. The steel reinforcement data on the second pouring layer includes the number of longitudinal steel bars at the top of the second pouring layer. The prestressed steel bars in the first pouring layer are used to balance the self-weight of the first pouring layer, the self-weight of the second pouring layer, the self-weight of the third pouring layer, and the construction load of the third pouring layer. S8. Based on the self-weight of the first pouring layer, the self-weight of the second pouring layer, the self-weight of the third pouring layer, the anti-slip bearing capacity and temperature stress of the interface between the second and third pouring layers, perform anti-slip analysis and temperature stress analysis on the interface between the third pouring layer and the second pouring layer; if the requirements are not met, adjust the reinforcement data on the second pouring layer and add vertical ties until the analysis results meet the requirements; S9. Based on the self-weight of the first pouring layer, the self-weight of the second pouring layer, the self-weight of the third pouring layer, and the construction load on the third pouring layer during the construction process, simulate and calculate the change requirements of the tension force data of the prestressed steel bars in the first pouring layer, and use this as the basis and technical parameters for controlling the prestressing tension during the construction process.

2. The method for simulating and calculating the construction of prestressed self-supporting reinforced concrete thick slabs according to claim 1, characterized in that, The weight of the first pouring layer, the self-weight of the first pouring layer, the self-weight of the second pouring layer, and the self-weight of the third pouring layer are 26 kN / m. 3 The construction load for the first, second, and third pouring layers is 10 kN / m².

3. The construction simulation calculation method for prestressed self-supporting reinforced concrete thick slabs according to claim 2, characterized in that: In step S5, the steel reinforcement data on the first pouring layer is calculated based on the self-weight of the first pouring layer, the self-weight of the second pouring layer, and the construction load of the second pouring layer. Specifically, this includes balancing the self-weight of the first pouring layer with the prestressed steel reinforcement of the first pouring layer, and balancing the increasing weight of concrete during the pouring of the second pouring layer with the prestressed steel reinforcement of the first pouring layer. In step S7, the calculation of the reinforcement data on the second pouring layer based on the self-weight of the first pouring layer, the self-weight of the second pouring layer, the self-weight of the third pouring layer, and the construction load of the third pouring layer specifically includes: when the second pouring layer is poured to 90% of the design strength, the requirement of the self-weight of the first pouring layer and the self-weight of the second pouring layer on the top reinforcement of the second pouring layer is simulated and calculated. In step S9, the simulation results of prestressing tension during the pouring of the first, second, and third pouring layers are reviewed to obtain the control values ​​of the number of prestressed steel bars and the tension force in the first pouring layer, and the model of the prestressed anchorage in the first pouring layer is adjusted to prepare for construction.

4. The construction simulation calculation method for prestressed self-supporting reinforced concrete thick slabs according to claim 3, characterized in that, In steps S6 and S8, the anti-slip analysis of the overlapping interface is specifically performed as follows: Determine whether the horizontal shear force at the interface between the old and new concrete meets the bearing capacity and deformation requirements of the subsequent pouring layer. Determine whether the pressure or tension generated by the bending moment on the cross section under the ultimate bearing capacity state of the horizontal shear force meets the bearing capacity and deformation requirements of the post-cast layer construction.

5. The construction simulation calculation method for prestressed self-supporting reinforced concrete thick slabs according to claim 4, characterized in that, In step S1, Based on the plate thickness and load data, the thickness of the first pouring layer is 0.3H, the thickness of the second pouring layer is 0.25H, and the thickness of the third pouring layer is 0.45H, where H is the overall thickness of the plate.

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