Shear wall reinforcing method based on prestressed double wall pieces
The prestressed double-wall reinforcement method solves the problems of long shear wall reinforcement period and structural stress redistribution, achieves efficient and accurate reinforcement effects, and reduces calculation complexity.
Patent Information
- Application Number
- CN202510867384.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-26
- Publication Date
- 2025-09-26
AI Technical Summary
The existing shear wall reinforcement method has the problems of long reinforcement period and structural stress redistribution, resulting in reinforcement quality that does not meet the requirements. An effective method is needed to shorten the reinforcement period and prevent structural stress redistribution.
A reinforcement method based on prestressed double wall sheets is adopted. By obtaining the required tensioning force of the prestressed steel bars, the location of the reinforcement opening is determined, and the prestressed double wall sheets are embedded and fixed in the shear wall. Specific parameter calculations and structural analysis are combined to ensure the reinforcement effect.
It improves the reinforcement accuracy and effect, reduces the calculation difficulty, ensures the data accuracy and appropriateness of the operation in the shear wall reinforcement process, and achieves efficient reinforcement processing.
Smart Images
Figure CN120701156A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of construction, and specifically to a shear wall reinforcement method based on prestressed double wall sheets. Background Art
[0002] Shear walls play a vital role in building structures. However, over the long term, their strength can gradually decline, necessitating reinforcement. Current reinforcement methods primarily involve chiseling away the concrete in the shear walls, filling them with new concrete using a cast-in-place method, and then performing structural treatments. This approach presents challenges: Firstly, cast-in-place concrete builds strength slowly, increasing the reinforcement cycle; secondly, it fails to account for the structural stress redistribution caused by chiseling away concrete, potentially resulting in reinforcement results that do not meet practical requirements.
[0003] Therefore, how to shorten the reinforcement cycle and prevent the negative impact of structural stress redistribution on the reinforcement quality, and perform reinforcement operations to improve the reinforcement operation effect, is a technical problem that technical personnel in this field urgently need to solve. Summary of the Invention
[0004] In order to fully improve the reinforcement effect of shear walls, the present application discloses a shear wall reinforcement method based on prestressed double wall sheets, which specifically includes: A shear wall reinforcement method based on prestressed double wall sheets, the reinforcement method comprising: Obtain the required tensioning force of the prestressed steel bars in the prestressed double wall segments; Obtain the location of the reinforced opening of the shear wall and construct the reinforced opening; Prestressed double wall sheets are embedded in the reinforced openings and fixed.
[0005] Optionally, obtaining the tensioning force required for the prestressed steel bars in the prestressed double wall sheet includes: Obtaining the high beam elements of the shear wall and obtaining the deflections of all the high beam elements; Based on the deflection of the high beam unit, obtaining the beam span deflection increment of the shear wall; Obtain the incremental sum of the shear wall's high beam deflections to obtain the maximum vertical displacement of the shear wall; Based on the maximum vertical displacement, the required tensioning force of the prestressed steel bar is obtained.
[0006] Optionally, obtaining the sum of the deflection increments of the high beams of the shear wall to obtain the maximum vertical displacement of the shear wall includes: Obtain the vertical displacement of all high beam elements of the shear wall; Obtain the total amount of all vertical displacements, the total amount of vertical displacement equation is: ; in, represents the total vertical displacement, represents the vertical displacement of the first sorghum unit; represents the vertical displacement of the kth high beam unit; represents the vertical displacement of the nth high beam unit; The total amount of vertical displacement is determined as the beam span deflection increment.
[0007] Optionally, the vertical displacement of the high beam unit is determined by: Obtaining the load of the high beam unit; Based on the load of the high beam unit, the vertical displacement is obtained, and the determination equation of the vertical displacement is: ; in, q represents the load of the high beam element; L represents the length of the high beam unit; represents the material elastic modulus of the high beam element; I represents the area moment of inertia of the high beam element.
[0008] Optionally, the section moment of inertia of the high beam unit and the load of the high beam unit are determined by: Obtain the amount of vertical load transferred from the shear wall to the periphery and the span-to-height ratio of the force transmission baseline; Based on the span-to-height ratio of the force transmission baseline, obtaining the height value of the highest point in the region of the high beam unit; The load determination equation for the high beam unit is: ; in, Indicates the thickness of the shear wall; is the concrete bulk density; Indicates the height value of the highest point in the area of the high beam unit; is the load transmitted from the i-th slab above the opening.
[0009] Optionally, obtaining the required tensioning force of the prestressed steel bar based on the maximum vertical displacement includes: Based on the determination equation of the vertical displacement, the beam span deflection increment is obtained. The beam span deflection increment equation is: ; in, n represents the number of sorghum units, m Above the cave entrance n The number of structural layers within the number of high beam units, The number of values, take ; Obtain the strain of the prestressed double wall sheet when prestressed. The strain equation is: ; in, Indicates the effective prestressing force of each prestressed steel bar in the prestressed double wall segment; Indicates the height of the hole; represents the shear wall displacement; Eq. Indicates that it is generated based on prestress rebound; Based on the steel relaxation and concrete creep shrinkage loss of each prestressed steel bar in the prestressed double wall sheet, the required tension force of the prestressed steel bar is obtained. The required tension force equation of the prestressed steel bar is: ; in, Indicates the required tension force of prestressed steel bars; Indicates steel bar relaxation loss; Indicates the creep shrinkage loss of concrete; Indicates the height of the hole; Indicates the height of the beam unit; Represents the cross-sectional area of a single prestressed steel bar.
[0010] Optionally, embedding a prestressed double wall sheet into the reinforced opening and fixing the sheet includes: grouting the lower end of the reinforced hole; Embedding a prestressed double wall sheet into the reinforced opening and forming a groove area at the top of the prestressed double wall sheet; Grouting is performed into the groove area until the grouting material flows out of the groove area.
[0011] The beneficial effects of this application include: 1. Improved reinforcement accuracy. Based on the measurement and calculation of the shear wall parameters, the required reinforcement method for the wall itself and the relevant data required for reinforcement are determined, and the corresponding reinforcement operation is performed on the shear wall. By adopting this method, the data accuracy of the shear wall reinforcement treatment can be fully guaranteed.
[0012] 2. Improved reinforcement effect. In the specific reinforcement process of the shear wall, the reinforcement treatment method adopted must be able to handle all the reinforcement operations generated therein according to the method adopted. Therefore, in this case, it can be guaranteed that the double wall sheets used are properly operated, so that they can achieve good reinforcement effects in the shear wall.
[0013] 3. Reduced computational difficulty. In the technical solution of this application, the double wall panels that can be used are based on the specific parameters of the shear wall, and the wall reinforcement needs are processed based on these parameters. At the same time, the obtained reinforcement parameters are also processed based on the acquired parameters, and the relevant equations are applied to the obtained processing results, thereby reducing the computational difficulty. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the embodiments of the present application or the prior art. Obviously, the following description is only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. The drawings are used to provide a further understanding of the present disclosure and constitute part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure, but do not constitute a limitation of the present disclosure. In the drawings: Figure 1 A flow chart of a shear wall reinforcement method based on prestressed double wall sheets provided in an embodiment of the present application; Figure 2 A schematic diagram of a shear wall reinforcement opening according to a shear wall reinforcement method based on prestressed double wall sheets provided in an embodiment of the present application; Figure 3 A schematic diagram of a sorghum unit and load transfer in a shear wall reinforcement method based on prestressed double wall sheets provided in an embodiment of the present application; Figure 4 A wall reinforcement flow chart of a shear wall reinforcement method based on prestressed double wall sheets provided in an embodiment of the present application; Figure 5 A schematic diagram of load distribution of a shear wall reinforcement method based on prestressed double wall sheets provided in an embodiment of the present application; Figure 6 A schematic diagram of a shear wall reinforcement method based on prestressed double wall sheets provided in an embodiment of the present application after the reinforcement wall sheets are set; Figure 7 A schematic diagram illustrating a method for reinforcing a shear wall using prestressed double wall sheets is provided for explaining the force transmission of the floor slab and the method for determining the value of p. DETAILED DESCRIPTION
[0015] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. In addition, in the embodiments of the present application, "first", "second", etc. are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.
[0016] Shear walls play an important role in building structures, among which shear wall structures play an important role in maintaining the life and stability of buildings. When problems are found in shear wall structures, they need to be reinforced in a timely manner. In the current technical solutions, prestressed double wall sheets have begun to be used for the reinforcement of shear walls. However, they are usually only used directly and then fixed. The reinforcement effect required in the shear wall reinforcement process and the specific treatment methods of the shear wall structure have not been fully analyzed and used. This will result in the double wall sheet reinforcement technology used not achieving the expected reinforcement effect. Therefore, it is necessary to reasonably analyze the technical solutions in the shear wall structure reinforcement process.
[0017] In order to ensure the reinforcement effect of prestressed double wall sheets on shear wall structures, this application discloses a shear wall reinforcement method based on prestressed double wall sheets, such as Figure 1 The figure shows a flow chart of a shear wall reinforcement method based on prestressed double wall sheets provided in an embodiment of the present application. Specifically, it includes: S110. Obtain the tensioning force required for the prestressed steel bars in the prestressed double wall segment.
[0018] S120. Obtain the location of the reinforced opening of the shear wall and construct the reinforced opening.
[0019] S130, embedding prestressed double wall sheets into the reinforced opening and fixing them.
[0020] The purpose of all the above steps is to strengthen the shear wall structure, calculate the relevant parameters during the reinforcement process, obtain the reinforcement parameter target, and then strengthen the shear wall structure based on the target. The following will further explain all the above contents, specifically: The step of obtaining the tensioning force required for the prestressed steel bars in the prestressed double wall sheet includes: Obtaining the high beam elements of the shear wall and obtaining the deflections of all the high beam elements; Based on the deflection of the high beam unit, obtaining the beam span deflection increment of the shear wall; Obtain the incremental sum of the shear wall's high beam deflections to obtain the maximum vertical displacement of the shear wall; Based on the maximum vertical displacement, the required tensioning force of the prestressed steel bar is obtained.
[0021] The step of obtaining the incremental deflection of the high beam of the shear wall and obtaining the maximum vertical displacement of the shear wall includes: Obtain the vertical displacement of all high beam elements of the shear wall; Obtain the total amount of all vertical displacements, the total amount of vertical displacement equation is: ; in, represents the total vertical displacement, represents the vertical displacement of the first sorghum unit; represents the vertical displacement of the kth high beam unit; represents the vertical displacement of the nth high beam unit; The total amount of vertical displacement is determined as the beam span deflection increment.
[0022] The vertical displacement of the high beam unit is determined by: Obtaining the load of the high beam unit; Based on the load of the high beam unit, the vertical displacement is obtained, and the determination equation of the vertical displacement is: ; in, q represents the load of the high beam element; L represents the length of the high beam unit; represents the material elastic modulus of the high beam element; I represents the area moment of inertia of the high beam element.
[0023] The method for determining the section inertia moment of the high beam unit and the load of the high beam unit includes: Obtain the amount of vertical load transferred from the shear wall to the periphery and the span-to-height ratio of the force transmission baseline; Based on the span-to-height ratio of the force transmission baseline, obtaining the height value of the highest point in the region of the high beam unit; The load determination equation for the high beam unit is: ; in, Indicates the thickness of the shear wall; is the concrete bulk density; Indicates the height value of the highest point in the area of the high beam unit; is the load transmitted from the i-th slab above the opening .
[0024] Wherein, obtaining the tensioning force required for the prestressed steel bar based on the maximum vertical displacement includes: Based on the determination equation of the vertical displacement, the beam span deflection increment is obtained. The beam span deflection increment equation is: ; in, n represents the number of sorghum units, m Above the cave entrance n The number of structural layers within the number of high beam units, The number of values, take (round down), such as Figure 7 , which is a schematic diagram illustrating a method for reinforcing a shear wall based on prestressed double wall sheets provided in an embodiment of the present application, showing a method for transferring force through a floor slab and determining the value of p; Obtain the strain of the prestressed double wall sheet when prestressed. The strain equation is: ; in, Indicates the effective prestressing force of each prestressed steel bar in the prestressed double wall segment; Indicates the height of the hole; represents the shear wall displacement; where the equation Indicates the rebound strain generated based on prestress rebound; Equation Indicates the strain deformation due to external load.
[0025] Based on the steel relaxation and concrete creep shrinkage loss of each prestressed steel bar in the prestressed double wall sheet, the required tension force of the prestressed steel bar is obtained. The required tension force equation of the prestressed steel bar is: ; in, Indicates the required tension force of prestressed steel bars; Indicates steel bar relaxation loss; Indicates the creep shrinkage loss of concrete; Represents the cross-sectional area of a single prestressed steel bar.
[0026] Regarding the derivation of relevant equations for all the above steps and the composition of the technical solution, specifically: The double wall panels are equipped with internal prestressed steel bars, which are applied by post-tensioning method. The arrangement and construction of prestressed steel bars are shown in Figure 2 , is a schematic diagram of a shear wall reinforcement opening according to a shear wall reinforcement method based on prestressed double wall sheets provided in an embodiment of the present application. The following is a method for calculating the required tensioning force of the prestressed steel bars in the double wall sheets: To find the maximum vertical displacement of the shear wall caused by the vertical load in the area above the opening, a method is used to consider that the shear wall above the opening consists of n segments. The total vertical displacement of the beam unit B is the sum of the deflection increments of each beam span, that is, , beam element B is consolidated with the surrounding walls. According to the principle of material mechanics, the vertical load of the shear wall above the opening will be transmitted to the surrounding wall M and N areas along the principal compressive stress trace, such as Figure 3 , is a schematic diagram of a sorghum unit and load transfer for a shear wall reinforcement method based on prestressed double wall sheets provided in an embodiment of the present application. ① The load in area ① is directly transferred to areas M and N. It is assumed that the load in area ② is only transferred to areas M and N through beam unit B. For safety reasons, the height of the highest point in area ② is The load within the rectangular range of the beam element B length L is transferred to the M and N regions through the beam element B. The load within the rectangular range acts on the beam element B in the form of a uniformly distributed load q. ,See Figure 5 , which is a load distribution diagram of a shear wall reinforcement method based on prestressed double wall sheets provided in an embodiment of the present application.
[0027] Assuming that the vertical load is transmitted to the surrounding walls along the principal compressive stress trace, the height-to-span ratio is appropriate, that is, , it is desirable .
[0028] Line load , For wall thickness, is the concrete bulk density, is the load transmitted from the i-th slab above the opening .
[0029] Rectangular interface High beam unit moment of inertia ,so .
[0030] The maximum vertical displacement of the shear wall caused by the vertical load in the area above the opening is: ; in Round up, verified by finite element calculation When taking the following table The calculated results are close to the actual ones.
[0031] ; Assuming that the stiffness of the prestressed reinforced wall is close to that of the shear wall above the opening, the compression after the prestress is applied to the reinforced wall should be To ensure that the shear wall displacement above the opening is eliminated , the height of the reinforced wall before prestressing is , the height of the reinforced wall after prestressing is ,See Figure 6 , which is a schematic diagram of the reinforcement wall pieces after setting up a shear wall reinforcement method based on prestressed double wall pieces provided in an embodiment of the present application.
[0032] Strain of reinforced wall after prestressing , , then: ; in The effective prestressing force of each prestressed steel bar. When using the post-tensioning method to tension the prestressed steel bars, there will be two losses caused by the relaxation of the steel bars and the creep shrinkage of the concrete. , then the effective prestressing force of each prestressed steel bar is: ; in To control the stress of prestressed steel bars.
[0033] Formula (2) is transformed into: = , and substituting into formula (3) to obtain the tension control force of each prestressed steel bar: ; In the formula Calculated according to the prestress loss method of prestressed concrete components.
[0034] Optionally, obtaining the location of the reinforced opening of the shear wall and constructing the reinforced opening includes: Get the location of the shear wall beams within the shear wall to get the beam spacing area; A reinforcement area is provided in the middle section of the shear wall within the high beam spacing area, and a reinforcement opening is provided within the reinforcement area; Based on the location of the reinforcement opening, the shear wall is excavated to obtain the steel structure inside the shear wall; The steel bars in the steel bar structure are removed, and the steel bar structure in the shear wall is reserved in the reinforced opening.
[0035] The obtaining of the reinforced opening position of the shear wall and the construction of the reinforced opening include: Get the location of the shear wall beams within the shear wall to get the beam spacing area; A reinforcement area is provided in the middle section of the shear wall within the high beam spacing area, and a reinforcement opening is provided within the reinforcement area; Based on the location of the reinforcement opening, the shear wall is excavated to obtain the steel structure inside the shear wall; The steel bars in the steel bar structure are removed, and the steel bar structure in the shear wall is reserved in the reinforced opening.
[0036] Among them, for the above steps, the specific method implementation process includes: Determine the position of each structure in the shear wall. The method of embedding the prestressed double wall sheet into the reinforced opening and fixing the prestressed double wall sheet comprises: grouting the lower end of the reinforced hole; Embedding a prestressed double wall sheet into the reinforced opening and forming a groove area at the top of the prestressed double wall sheet; Grouting is performed into the groove area until the grouting material flows out of the groove area.
[0037] The above steps specifically include: For the design of prestressed double wall sheet structure, three types of double wall sheet reinforced wall sections were designed. The double wall sheets were embedded from both sides of the opening and connected by grouting with grout anchors.
[0038] Construction process of reinforcing shear walls using prestressed double wall sheet assembly method (1) Vertical connection First, reinforce from the middle of the reinforced section to both ends, and excavate a section to form an opening. When excavating, reserve a section of original vertical steel bars at the upper and lower ends of the opening, and cut off the rest. Figure 2 , which is a schematic diagram of a shear wall reinforcement opening in a shear wall reinforcement method based on prestressed double wall sheets provided in an embodiment of the present application.
[0039] Then, grouting is done at the lower end of the opening, and double wall panels are embedded on both sides of the excavated opening. The double wall panels form a groove area at the top, and grouting is injected into the groove area through the grouting holes. When the grouting material flows out from the top of the wall panel, the gap between the double wall panel and the upper and lower walls is filled.
[0040] Finally, when the double wall pieces are embedded in the opening, ensure that the reserved steel bars extend into the grouting groove, and complete the grouting connection between the wall pieces and the reserved steel bars through grouting through the grouting holes, and complete the grouting connection between the double wall pieces through grouting through the grouting holes.
[0041] (2) Horizontal connection The horizontal direction is reinforced from the middle to the two ends. After each opening is embedded with double wall sheets, the prestressed steel bars in the wall sheet are cut first. The double wall sheet will rebound vertically, compressing the gap between the edge of the opening. At the same time, the supporting reaction force also restores the downward deformation of the wall caused by the opening. Then, the prestressed steel bar channel is filled by grouting through the grouting hole. The reinforcement process is shown in Figure 4 , which is a wall reinforcement flow chart of a shear wall reinforcement method based on prestressed double wall sheets provided in an embodiment of the present application.
[0042] Since the middle wall piece has steel bars for horizontal anchoring with the next wall piece, when the middle wall is excavated, more space should be excavated at both ends of the opening. Since the two sides of the middle wall are reinforced with steel bars for anchoring with the next wall piece on one side, when the two side walls are excavated, more space should be excavated at both ends of the opening. When embedding the wall pieces, pay attention to the horizontal anchoring steel bars extending into the grouting groove, and grouting through the grouting holes to complete the grouting connection between the wall piece and the reserved steel bars. When excavating the end wall, a section of the original horizontal steel bars should be reserved for the opening, and the rest should be cut off. When embedding the wall pieces, pay attention to the horizontal anchoring steel bars extending into the grouting groove, and grouting through the grouting holes to complete the grouting connection between the wall piece and the reserved steel bars. See Figure 1 In this way, each wall piece in the reinforcement area is reliably connected in the horizontal direction.
[0043] The beneficial effects of this application include: 1. Improved reinforcement accuracy. Based on the measurement and calculation of the shear wall parameters, the required reinforcement method for the wall itself and the relevant data required for reinforcement are determined, and the corresponding reinforcement operation is performed on the shear wall. By adopting this method, the data accuracy of the shear wall reinforcement treatment can be fully guaranteed.
[0044] 2. Improved reinforcement effect. In the specific reinforcement process of the shear wall, the reinforcement treatment method adopted must be able to handle all the reinforcement operations generated therein according to the method adopted. Therefore, in this case, it can be guaranteed that the double wall sheets used are properly operated, so that they can achieve good reinforcement effects in the shear wall.
[0045] 3. Reduced computational difficulty. In the technical solution of this application, the double wall panels that can be used are based on the specific parameters of the shear wall, and the wall reinforcement needs are processed based on these parameters. At the same time, the obtained reinforcement parameters are also processed based on the acquired parameters, and the relevant equations are applied to the obtained processing results, thereby reducing the computational difficulty.
[0046] Those skilled in the art will understand that all or part of the steps of the above-mentioned method embodiments can be implemented by hardware related to computer program instructions, and the aforementioned computer program can be stored in a non-volatile storage medium. When the computer program is executed, it executes the steps of the above-mentioned method embodiments. Alternatively, if the above-mentioned integrated unit of the present invention is implemented in the form of a software functional module and sold or used as an independent product, it can also be stored in a non-volatile storage medium. Based on this understanding, the technical solution of the embodiment of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. The computer software product is stored in a non-volatile storage medium and includes a number of instructions for enabling an electronic device (which can be a personal computer, server, network device, etc.) to execute all or part of the methods described in each embodiment of the present invention.
[0047] The above description is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with this technical field can easily think of changes or replacements within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A shear wall reinforcement method based on prestressed double wall sheets, characterized in that: The reinforcement method includes: Obtain the required tensioning force of the prestressed steel bars in the prestressed double wall segments; Obtain the location of the reinforced opening of the shear wall and construct the reinforced opening; Prestressed double wall sheets are embedded in the reinforced openings and fixed.
2. A shear wall reinforcement method based on prestressed double wall sheets according to claim 1, characterized in that: The method of obtaining the tensioning force required for the prestressed steel bars in the prestressed double wall sheet includes: Obtaining the high beam elements of the shear wall and obtaining the deflections of all the high beam elements; Based on the deflection of the high beam unit, obtaining the beam span deflection increment of the shear wall; Obtain the incremental sum of the shear wall's high beam deflections to obtain the maximum vertical displacement of the shear wall; Based on the maximum vertical displacement, the required tensioning force of the prestressed steel bar is obtained.
3. A shear wall reinforcement method based on prestressed double wall sheets according to claim 2, characterized in that: The step of obtaining the incremental sum of the high beam deflections of the shear wall and obtaining the maximum vertical displacement of the shear wall includes: Obtain the vertical displacement of all high beam elements of the shear wall; Obtain the total amount of all vertical displacements, the total amount of vertical displacement equation is: ； in, represents the total vertical displacement, represents the vertical displacement of the first sorghum unit; represents the vertical displacement of the kth high beam unit; represents the vertical displacement of the nth high beam unit; The total amount of vertical displacement is determined as the beam span deflection increment.
4. A shear wall reinforcement method based on prestressed double wall sheets according to claim 3, characterized in that: The vertical displacement of the high beam unit is determined by: Obtaining the load of the high beam unit; Based on the load of the high beam unit, the vertical displacement is obtained, and the determination equation of the vertical displacement is: ； in, q represents the load of the high beam element; L represents the length of the high beam unit; represents the material elastic modulus of the high beam element; I represents the area moment of inertia of the high beam element.
5. A shear wall reinforcement method based on prestressed double wall sheets according to claim 4, characterized in that: The method for determining the section inertia moment of the high beam unit and the load of the high beam unit includes: Obtain the amount of vertical load transferred from the shear wall to the periphery and the span-to-height ratio of the force transmission baseline; Based on the span-to-height ratio of the force transmission baseline, obtaining the height value of the highest point in the region of the high beam unit; The load determination equation for the high beam unit is: ； in, Indicates the thickness of the shear wall; is the concrete bulk density; Indicates the height value of the highest point in the area of the high beam unit; is the load transmitted from the i-th slab above the opening.
6. The shear wall reinforcement method based on prestressed double wall sheets according to claim 2, characterized in that: The obtaining of the tensioning force required for the prestressed steel bar based on the maximum vertical displacement includes: Based on the determination equation of the vertical displacement, the beam span deflection increment is obtained. The beam span deflection increment equation is: ； in, n represents the number of sorghum units, m Above the cave entrance n The number of structural layers within the number of high beam units, The number of values, take ; Obtain the strain of the prestressed double wall sheet when prestressed. The strain equation is: ； in, Indicates the effective prestressing force of each prestressed steel bar in the prestressed double wall segment; Indicates the height of the hole; represents the shear wall displacement; Eq. Indicates that it is generated based on prestress rebound; Based on the steel relaxation and concrete creep shrinkage loss of each prestressed steel bar in the prestressed double wall sheet, the required tension force of the prestressed steel bar is obtained. The required tension force equation of the prestressed steel bar is: ； in, Indicates the required tension force of prestressed steel bars; Indicates steel bar relaxation loss; Indicates the creep shrinkage loss of concrete; Indicates the height of the hole; Indicates the height of the beam unit; Represents the cross-sectional area of a single prestressed steel bar.
7. The shear wall reinforcement method based on prestressed double wall sheets according to claim 1, characterized in that: The obtaining of the reinforced opening position of the shear wall and constructing the reinforced opening includes: Get the location of the shear wall beams within the shear wall to get the beam spacing area; A reinforcement area is provided in the middle section of the shear wall within the high beam spacing area, and a reinforcement opening is provided within the reinforcement area; Based on the location of the reinforcement opening, the shear wall is excavated to obtain the steel structure inside the shear wall; The steel bars in the steel bar structure are removed, and the steel bar structure in the shear wall is reserved in the reinforced opening.
8. The shear wall reinforcement method based on prestressed double wall sheets according to claim 1, characterized in that: The method of embedding the prestressed double wall sheet into the reinforced opening and fixing the prestressed double wall sheet comprises: grouting the lower end of the reinforced hole; Embedding a prestressed double wall sheet into the reinforced opening and forming a groove area at the top of the prestressed double wall sheet; Grouting is performed into the groove area until the grouting material flows out of the groove area.