A kind of assembled reinforced concrete shear wall and construction method thereof

Abstract

The present invention discloses an assembled reinforced concrete shear wall and a construction method thereof, comprising an integrally prefabricated reinforced concrete block, both sides and the lower end of which are extended with connecting steel bars, and the upper end is provided with a horizontal post-casting strip and a prefabricated concrete convex foot, into which the longitudinal steel bars of the floor slab and the lower end of the upper prefabricated shear wall are inserted. The top elevation of the convex foot is the elevation of the structural floor surface, and the convex foot is the vertical support of the upper prefabricated shear wall. This shear wall is prefabricated in a factory, transported to the site by a car, and put in place by a tower crane, and the connecting steel bars at the lower end are inserted into the horizontal post-casting strip at the upper end of the lower shear wall. When in place, the convex foot at the upper end of the lower shear wall is used as a vertical support, supplemented by necessary lateral support fixation. Finally, the concrete of the upper part of the composite plate, the edge components of the lower shear wall and the horizontal post-casting strip is cast on site, and the upper and lower shear walls and the composite plate are connected into a whole by the horizontal post-casting strip.

Description

Technical Field

[0001] The present invention belongs to the technical field of design and construction of building industrialization, and in particular relates to an assembled reinforced concrete shear wall and a construction method thereof. Background Art

[0002] Building industrialization is the current development trend of my country's construction industry and an important step to achieve green buildings with "four savings and one environmental protection". An important feature of building industrialization is that building components are prefabricated in factories as much as possible, making full use of the factory's industrial machinery and complete information management. The quality of components prefabricated in factories can often be guaranteed due to their standardized construction and systematic management, and the error level of the construction industry can be moved from "centimeter level" to "millimeter level". However, due to the limitations of transportation capacity and lifting equipment, as a whole building structure, it must be split into individual components when prefabricated in the factory, transported to the site by car, and put in place by tower cranes or lifting equipment. The connection of prefabricated components on site is the key to whether the structure can give full play to its component bearing capacity.

[0003] At present, there are two main ways to connect the prefabricated shear walls of assembled integral shear wall structures or assembled integral frame-shear wall structures on site: (1) sleeve grouting connection, the shear wall is prefabricated to the bottom elevation of the composite slab, and the connecting steel bars are extended from the top. After the concrete of the composite slab is poured and meets the strength requirements, the upper prefabricated section of the shear wall is hoisted, and the bottom of the upper prefabricated section of the upper shear wall is pre-buried with a connecting sleeve. The upper connecting steel bars of the lower shear wall are inserted into the connecting sleeve at the lower part of the upper shear wall. After it is fully in place, cement-based grouting material is poured into the sleeve. The grouting material has basic characteristics such as high strength, early strength, no shrinkage and micro-expansion, so that it can effectively combine with the connecting sleeve and the connecting steel bars to work together. (2) Grouting anchor lap connection, which is similar to the working principle and construction steps of sleeve grouting connection, but the difference is that a hole is reserved at the bottom of the prefabricated shear wall, the connecting steel bars are inserted into the hole, and then the grouting material is poured into the hole. After the grouting material reaches the strength, the connecting steel bars are overlapped in the hole. There is also another type of composite slab concrete shear wall that is also widely used. In some provinces, there are local standards. The composite slab shear wall is a component with a cavity made of concrete slabs and steel trusses on both sides in the factory. After being transported to the site, connecting steel bars are buried in the cavity and concrete is poured, eventually forming a shear wall that is subjected to overall load by prefabricated and cast-in-place concrete.

[0004] The sleeve grouting connection has the advantage of stable and reliable connection quality. It is widely used in the United States and Japan and has a history of nearly 40 years. A large number of experimental studies have been conducted on the technology of steel sleeve grouting connection at home and abroad. Buildings using this technology have also experienced the test of many earthquakes, including some major earthquakes in Japan. Its disadvantages are as follows: (1) It is relatively expensive. The price of the connection sleeve is high, and the price of the grouting material is also high, which increases the construction cost of prefabricated buildings and is not conducive to the promotion of building industrialization; (2) The construction accuracy requirements are high. When the upper prefabricated shear wall is in place, the connecting steel bars of the lower shear wall need to be inserted into the sleeve. The positioning requirements for the connecting steel bars and the sleeve are particularly high. Once a connecting steel bar and the embedded sleeve are not matched, the entire shear wall cannot be in place; (3) The construction steps are relatively cumbersome and complicated. After the connecting steel bar is inserted into the sleeve, the grouting material needs to be poured into the sleeve. The grouting material needs to be tested for its fluidity, expansion rate, initial setting time and final setting time before use. The grouting material must be constructed within a specific time, which places high requirements on the construction organization.

[0005] The advantages and disadvantages of grout-anchor lap joint are similar to those of sleeve grouting joint. It omits the connection sleeve and replaces it with a pre-buried corrugated pipe, saving some construction costs. Generally, the diameter of the corrugated pipe is larger than the diameter of the connection sleeve, so the requirements for construction accuracy of grout-anchor lap joint are also lower. However, the reliability of grout-anchor lap joint is not as high as that of sleeve grouting joint. Sleeve grouting joint is preferred in important structures or important parts of the structure.

[0006] The advantage of the composite slab concrete shear wall is that it does not require pre-buried connection sleeves or bellows, so the requirements for construction accuracy are consistent with ordinary cast-in-place concrete. The cast-in-place concrete in the cavity is poured together with the edge components and the concrete on the upper part of the composite slab. The construction process is simple and consistent with ordinary cast-in-place concrete. The disadvantage of the composite slab concrete shear wall is that the size of the cavity between the two layers of precast concrete slabs is relatively small, and effective vibration cannot be carried out during concrete pouring, and the density is difficult to ensure. The common solution is to pour self-compacting concrete in the cavity, but the price of self-compacting concrete is relatively high, which is not conducive to the promotion of building industrialization. The upper and lower layers of the composite slab concrete shear wall are connected by cast-in-place concrete and steel bars in the cavity. The size of the cavity is small, and the strength and stiffness of the connection are relatively weak. Although there are many theoretical analyses and experiments to verify that this connection method is "equivalent to cast-in-place", the safety and reliability of this connection method still need to be tested by earthquakes or even "big earthquakes". Summary of the invention

[0007] In view of the above-mentioned several existing prefabricated shear walls and their connection methods, by making full use of their advantages and avoiding their weaknesses, an assembled reinforced concrete shear wall and its construction method are proposed. The main idea is to set a horizontal post-cast strip cast on site between the upper and lower prefabricated shear walls at the floor position of the structure. The longitudinal steel bars of the upper and lower prefabricated shear walls are anchored in the horizontal post-cast strip. The height of the horizontal post-cast strip must meet the requirements of the anchorage length of the longitudinal steel bars of the wall, which is generally 200mm to 400mm. The concrete of the horizontal post-cast strip is cast together with the concrete of the composite floor. During construction, the upper prefabricated shear wall is hoisted in place before the concrete of the lower horizontal post-cast strip is cast, and the longitudinal bars of the upper prefabricated shear wall are inserted into the lower horizontal post-cast strip. When the upper prefabricated shear wall is hoisted in place, the protruding feet are used as vertical supports to reduce the amount of temporary supports.

[0008] The technical solution adopted by the present invention is as follows: an assembled reinforced concrete shear wall, including an integrally prefabricated reinforced concrete block, with connecting steel bars extending from both sides and the lower end of the reinforced concrete block, and a horizontal post-cast strip and prefabricated concrete protrusions are provided at the upper end, and the steel bars in the horizontal post-cast strip and the protrusions are cast together.

[0009] Furthermore, the shape of the longitudinal steel bars at the upper end of the reinforced concrete block in the horizontal post-cast strip is an inverted U-shape, an L-shape or a straight line.

[0010] Furthermore, the precast concrete protrusions serve as vertical supports for the upper assembled reinforced concrete shear walls and as shear keys for the horizontal post-cast strips.

[0011] Furthermore, the longitudinal steel bars at the lower end of the reinforced concrete block are anchored in the horizontal post-cast strip of the lower assembled reinforced concrete shear wall, and the shape is U-shaped, L-shaped or straight.

[0012] The present invention also provides a construction method of an assembled reinforced concrete shear wall, comprising the following steps:

[0013] Step 1: Make prefabricated shear wall formwork in the factory, tie the shear wall reinforcement, and then pour concrete. Leave all the upper horizontal post-casting strips empty except for the convex feet, and transport them to the site after curing to the designed strength;

[0014] Step 2: Tie the steel bars of the lower shear wall edge components, hoist and place the lower composite slab bottom plate, and tie the upper steel bars of the composite slab;

[0015] Step 3: Hoist the upper assembled reinforced concrete shear wall, use the convex feet of the lower shear wall as vertical support, and fix it with necessary horizontal support;

[0016] Step 4: Set up the formwork for pouring concrete on site, and use precast shear walls and composite slab base to fix and support the formwork;

[0017] Step 5: Pour concrete on the upper part of the composite slab, the edge components of the shear wall and the horizontal post-cast strip, and use the horizontal post-cast strip to connect the upper and lower shear walls and the composite slab into a whole;

[0018] Step 6: After the concrete strength of this layer meets the requirements, repeat steps 2 to 5 to proceed with the construction of the next layer.

[0019] The utility model discloses an assembled reinforced concrete shear wall, comprising an integrally prefabricated reinforced concrete block, wherein connecting steel bars extend from both sides and the upper end of the reinforced concrete block, and a horizontal post-casting strip and prefabricated concrete convex feet are arranged at the lower end, wherein the steel bars in the horizontal post-casting strip and the convex feet are cast together.

[0020] Furthermore, the shape of the longitudinal steel bars at the lower end of the reinforced concrete block in the horizontal post-cast strip is U-shaped, L-shaped or straight.

[0021] Furthermore, the precast concrete protrusion serves as its own vertical support and a shear key for the horizontal post-cast strip.

[0022] Furthermore, the longitudinal steel bars at the upper end of the reinforced concrete block are anchored in the horizontal post-cast strip of the upper prefabricated reinforced concrete shear wall, and the shape is an inverted U-shape, L-shape or straight line.

[0023] A construction method for an assembled reinforced concrete shear wall comprises the following steps:

[0024] Step 1: Make prefabricated shear wall formwork in the factory, tie the shear wall reinforcement, and then pour concrete. Leave all the lower horizontal post-casting strips empty except for the convex feet, and transport them to the site after curing to the designed strength;

[0025] Step 2: Tie the steel bars of the lower shear wall edge components, hoist and place the lower composite slab bottom plate, and tie the upper steel bars of the composite slab;

[0026] Step 3: Hoist the upper assembled reinforced concrete shear wall, use the convex feet of the shear wall as vertical support, and fix it with necessary horizontal support;

[0027] Step 4: Set up the formwork for pouring concrete on site, and use precast shear walls and composite slab base to fix and support the formwork;

[0028] Step 5: Pour concrete on the upper part of the composite slab, the edge components of the shear wall and the horizontal post-cast strip, and use the horizontal post-cast strip to connect the upper and lower shear walls and the composite slab into a whole;

[0029] Step 6: After the concrete strength of this layer meets the requirements, repeat steps 2 to 5 to proceed with the construction of the next layer.

[0030] The beneficial effects of the present invention are as follows:

[0031] (1) The vertical reinforcement of the precast shear wall is anchored in the horizontal post-cast strip cast on site, and the force is clear and reliable. Its force mode is the same as that of the cast-in-place structure, and it can be classified as an assembled integral reinforced concrete shear wall;

[0032] (2) The prefabricated reinforced concrete shear wall of the present invention does not require pre-embedded connecting sleeves when its prefabricated components are manufactured, which simplifies the construction steps and reduces the ex-factory price of the prefabricated shear wall components, which is conducive to the promotion of building industrialization;

[0033] (3) The assembled reinforced concrete shear wall of the present invention does not require post-grouting during the node connection construction, which saves the cost of grouting materials, simplifies the on-site construction steps, and is conducive to the promotion of building industrialization;

[0034] (4) The precast concrete protrusions of the present invention can be used as vertical supports for assembled shear walls, reducing the amount of temporary supports used. The protrusions can also serve as shear keys to increase the shear bearing capacity of the connection nodes. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 Schematic diagram of precast concrete shear wall with horizontal post-cast strips and protruding feet on the top;

[0036] Figure 2 Schematic diagram of precast concrete shear wall with horizontal post-cast strips and protruding feet at the bottom;

[0037] Figure 3 This is a schematic diagram of a precast concrete shear wall with only one protruding foot;

[0038] Figure 4 This is a schematic diagram of the structure after the base plate of the composite slab is hoisted;

[0039] Figure 5 This is a schematic diagram of the structure after the upper prefabricated shear force is hoisted into place;

[0040] Figure 6 It is the wall size and prefabricated component segmentation diagram;

[0041] Figure 7 The elevation shape and size drawing of the prefabricated shear wall;

[0042] Figure 8 for Figure 7 Middle AA section;

[0043] Fig. 9 for Figure 7 Middle BB cross-section. Specific implementation methods

[0044] In order to make the technical solutions and advantages of the present invention more clear, the embodiments of the present invention are further described below in conjunction with specific applications.

[0045] An assembled reinforced concrete shear wall comprises an integrally prefabricated reinforced concrete block, both sides and the lower end of which are provided with connecting steel bars, and the upper end of which is provided with a horizontal post-casting strip and a prefabricated concrete convex foot. Figure 1 As shown. It is also possible to extend connecting steel bars from the upper end of the reinforced concrete block, and to provide a horizontal post-casting strip and precast concrete convex feet at the lower end, such as Figure 2 shown.

[0046] As a preference, the horizontal post-cast strip is arranged on the top of the lower prefabricated shear wall. Figure 1 As shown in the figure, the vertical longitudinal reinforcement of the shear wall can be made into an inverted U shape at the horizontal post-casting strip, which can not only improve the anchoring performance of the lower precast shear wall in the horizontal post-casting strip, but also enhance the shear resistance of the horizontal post-casting strip. The bottom vertical connecting steel bars of the upper precast shear wall are inserted into the horizontal post-casting strip of the lower precast shear wall before the concrete of the lower horizontal post-casting strip is poured. The connecting steel bars can be straight, U-shaped or L-shaped. When they are straight, it is simplest to avoid the connecting steel bars and the horizontal post-casting strip steel bars and floor slab steel bars, but the anchoring efficiency of the straight section is low, and it is often necessary to increase the height of the horizontal post-casting strip to meet the anchoring needs. When the anchoring length of the connecting steel bars in the horizontal post-casting strip does not meet the requirements, other mechanical anchoring forms can also be adopted.

[0047] Preferably, a precast concrete convex foot should be provided at the top of the precast shear wall. The functions of the convex foot are as follows: (1) The convex foot can serve as a vertical support for the assembled shear wall. When the conventional assembled shear wall is hoisted into place, the concrete of the shear wall at the lower end at the floor slab has been cast and formed and has reached the strength required for construction. However, when the precast shear wall of the present invention is hoisted into place, the concrete of the floor slab at the lower end has not yet been cast. The precast shear wall needs to be suspended in place, which requires high construction technology and high measures costs. The problem can be solved by providing a convex foot at the horizontal post-cast strip at the top of the lower shear wall; (2) The precast convex foot in the horizontal post-cast strip connects the longitudinal reinforcement of the horizontal post-cast strip with the precast shear wall, so that the steel skeleton of the horizontal post-cast strip is not easily deformed during transportation and hoisting; (3) The precast convex foot can also serve as a shear key for the connection node between the upper and lower shear walls, thereby improving the shear bearing capacity of the connection node.

[0048] The thickness of the precast concrete convex foot is generally the same as the wall thickness, the height is the same as the height of the horizontal post-casting strip, and the length should not be too large. It should avoid the steel bars of the floor slab. For example, when the steel bar spacing of the floor slab is 200mm, the recommended length of the convex foot is 180mm. When the steel bar spacing of the floor slab is 150mm, the recommended length of the convex foot is 130mm. The positioning and number of the convex foot are related to the length of the precast shear wall. When the length of the precast shear wall is less than 1400mm, the number of the convex foot is 1, and it is positioned in the center. Figure 3As shown; when the length of the prefabricated shear wall is 1400mm~2500mm, the number of protrusions is 2, and the distance between the protrusion and the end is 350mm; when the length of the prefabricated shear wall is 2500mm~4000mm, the number of protrusions is 2, and the distance between the protrusion and the end is 500mm. Figure 1 and 2 As shown; the length of the prefabricated shear wall should generally not exceed 4000mm. If it exceeds, a post-cast section should be set to divide it into two prefabricated shear walls. The reason is that when the prefabricated section is too long, it is not conducive to automobile transportation. When the prefabricated section is too long, the weight of the prefabricated component is large, and the requirements for the lifting equipment on the construction site are also high. The various forms of prefabricated protrusions are one direction of variation and improvement of the present invention. In addition to the concrete form, the prefabricated protrusions can also take the form of steel structures, which can be cast together with the prefabricated shear wall, and can also be separated from the prefabricated shear wall. If there are other construction measures that can solve the problem of the upper shear wall being suspended in place, the prefabricated protrusions can also be cancelled. At this time, the steel bars in the horizontal post-cast strip can be arranged on the construction site.

[0049] As a preferred method, the connecting steel bars extending from both sides of the assembled reinforced concrete shear wall and connected to the edge members are U-shaped. The anchorage and connection reliability of the U-shaped steel bars are high, but the U-shaped steel bars are a challenge to the construction and arrangement of the longitudinal bars in the edge members, and the steel bar insertion construction is relatively complicated. The connecting steel bars can also be straight or L-shaped, which is more convenient for construction and the anchorage length of the connecting steel bars can often meet the requirements.

[0050] The installation and construction steps of the assembled reinforced concrete shear wall of the present invention are as follows (taking the composite floor slab as an example):

[0051] Step 1: Make prefabricated shear wall formwork in the factory, tie the shear wall reinforcement, and then pour concrete. Leave all the upper horizontal post-casting strips empty except for the convex feet. After curing to the designed strength, transport it to the site. Figure 1 As shown;

[0052] Step 2: Tie the steel bars of the lower shear wall edge members, hoist and place the lower composite slab bottom plate, tie the upper steel bars of the composite slab, such as Figure 4 As shown;

[0053] Step 3: Hoist the upper assembled reinforced concrete shear wall, use the convex feet of the lower shear wall as vertical support, and fix it with necessary horizontal support, such as Figure 5 As shown;

[0054] Step 4: Set up the formwork for pouring concrete on site, and use precast shear walls and composite slab base to fix and support the formwork;

[0055] Step 5: Pour concrete on the upper part of the composite slab, the edge components of the shear wall and the horizontal post-cast strip, and use the horizontal post-cast strip to connect the upper and lower shear walls and the composite slab into a whole;

[0056] Step 6: After the concrete strength of this layer meets the requirements, repeat steps 2 to 5 to proceed with the construction of the next layer.

[0057] Embodiment 1:

[0058] Assembled integral reinforced concrete shear wall structure, shear wall thickness 200mm, shear wall seismic grade three, concrete strength grade C35, floor height 2.9m, a wall length of 4000mm, wall size and prefabricated component division as follows Figure 6 As shown in the figure, 1 is the prefabricated shear wall section, 2 is the edge component, and the concrete of the edge component needs to be poured on site; the facade shape and size of the prefabricated shear wall are as follows Figure 7 As shown in the figure, 1 is a prefabricated shear wall section, 3 is a convex foot; the connection between the prefabricated shear wall and the edge member is detailed in the AA section, as shown in Figure 8 As shown in the figure, 1 is a prefabricated shear wall segment, 2 is an edge member, and 4 is a U-shaped connecting steel bar; the steel bars at the top of the prefabricated shear wall are inserted in the detailed BB section, as shown in Fig. 9 As shown, 5 is the upper precast shear wall, 6 is the negative reinforcement of the composite floor surface, 7 is the composite floor bottom plate, and 8 is the lower precast shear wall.

[0059] The above only describes the basic principles and preferred embodiments of the present invention. Those skilled in the art may make many changes and improvements based on the above description, and these changes and improvements should fall within the protection scope of the present invention.

Claims

1. An assembled reinforced concrete shear wall, characterized in that: The invention comprises an integrally prefabricated reinforced concrete block, both sides and the lower end of which are provided with connecting steel bars, a horizontal post-casting strip and a prefabricated concrete convex foot are arranged at the upper end, the steel bars in the horizontal post-casting strip and the convex foot are cast together, the shape of the longitudinal steel bars at the upper end of the reinforced concrete block in the horizontal post-casting strip is an inverted U-shape, which can not only improve the anchoring performance of the prefabricated shear wall in the horizontal post-casting strip, but also enhance the shear resistance of the horizontal post-casting strip; the prefabricated concrete convex foot serves as a vertical support of the upper assembled reinforced concrete shear wall and a shear key of the horizontal post-casting strip, the longitudinal steel bars at the lower end of the reinforced concrete block are anchored in the horizontal post-casting strip of the lower assembled reinforced concrete shear wall, and the shape is U-shaped or L-shaped; the prefabricated convex foot in the horizontal post-casting strip connects the longitudinal bars of the horizontal post-casting strip with the prefabricated shear wall, and the longitudinal bars of the horizontal post-casting strip do not extend beyond the top surface of the convex foot in the horizontal direction, so that the steel skeleton of the horizontal post-casting strip is not easily deformed during transportation and hoisting; The location and number of the protrusions are related to the length of the precast shear wall, and they should avoid the reinforcement of the floor slab; When the length of the prefabricated shear wall is less than 1400mm, the number of protruding feet is 1, which is positioned in the center; when the length of the prefabricated shear wall is 1400mm to 2500mm, the number of protruding feet is 2, and the distance between the protruding feet and the end is 350mm; when the length of the prefabricated shear wall is 2500mm to 4000mm, the number of protruding feet is 2, and the distance between the protruding feet and the end is 500mm; The construction method of the assembled reinforced concrete shear wall is characterized in that it comprises the following steps: Step 1: Prefabricated shear wall formwork is made in a factory, the shear wall steel bars are tied, and then concrete is poured, and the upper horizontal post-casting strip is completely left empty except for the protruding feet, and the upper horizontal post-casting strip is transported to the site after curing to the designed strength; Step 2: The steel bars of the edge components of the lower shear wall are tied, the lower composite slab bottom plate is hoisted and placed in place, and the upper steel bars of the composite slab are tied; Step 3: The upper assembled reinforced concrete shear wall is hoisted, and the protruding feet of the lower shear wall are used as vertical supports, and necessary horizontal supports are used to fix them; Step 4: The formwork for pouring concrete on site is set up, and the prefabricated shear wall and the composite slab bottom plate can be used to fix and support the formwork; Step 5: Concrete is poured on the upper part of the composite slab, the edge components of the shear wall and the horizontal post-casting strip, and the upper and lower shear walls and the composite slab are connected into a whole by the horizontal post-casting strip; Step 6: After the concrete strength of this layer meets the requirements, steps 2 to 5 can be repeated to carry out the construction of the upper layer.

2. The assembled reinforced concrete shear wall according to claim 1, characterized in that: The shape of the longitudinal steel bars at the upper end of the reinforced concrete block in the horizontal post-casting strip is L-shaped.

3. An assembled reinforced concrete shear wall, characterized in that: It comprises an integrally prefabricated reinforced concrete block, both sides and the upper end of the reinforced concrete block extend connecting steel bars, the lower end is provided with a horizontal post-casting strip and a prefabricated concrete convex foot, the steel bars in the horizontal post-casting strip and the convex foot are cast together; the longitudinal steel bars at the lower end of the reinforced concrete block in the horizontal post-casting strip are in a U-shaped shape; It can not only improve the anchoring performance of the prefabricated shear wall in the horizontal post-casting strip, but also enhance the shear resistance of the horizontal post-casting strip; the prefabricated concrete convex foot serves as its own vertical support and the shear resistance key of the horizontal post-casting strip; the longitudinal steel bars at the upper end of the reinforced concrete block are anchored in the horizontal post-casting strip of the upper layer of assembled reinforced concrete shear wall, and its shape is an inverted U-shape or L-shape; the prefabricated convex foot in the horizontal post-casting strip connects the longitudinal bars of the horizontal post-casting strip with the prefabricated shear wall, and the longitudinal bars of the horizontal post-casting strip do not extend beyond the bottom surface of the convex foot in the horizontal direction, so that the steel skeleton of the horizontal post-casting strip is not easily deformed during transportation and hoisting; The location and number of the protrusions are related to the length of the precast shear wall, and they should avoid the reinforcement of the floor slab; When the length of the prefabricated shear wall is less than 1400mm, the number of protruding feet is 1, which is positioned in the center; when the length of the prefabricated shear wall is 1400mm to 2500mm, the number of protruding feet is 2, and the distance between the protruding feet and the end is 350mm; when the length of the prefabricated shear wall is 2500mm to 4000mm, the number of protruding feet is 2, and the distance between the protruding feet and the end is 500mm; The construction method of the assembled reinforced concrete shear wall is characterized in that it comprises the following steps: Step 1: Prefabricated shear wall formwork is made in a factory, the shear wall steel bars are tied, and then concrete is poured, and the lower horizontal post-casting strip is completely left empty except for the protruding feet, and the lower horizontal post-casting strip is transported to the site after curing to the designed strength; Step 2: The steel bars of the edge components of the lower shear wall are tied, the lower composite slab bottom plate is hoisted and placed in place, and the upper steel bars of the composite slab are tied; Step 3: The upper assembled reinforced concrete shear wall is hoisted, and the protruding feet of the shear wall are used as vertical supports, and necessary horizontal supports are used to fix them; Step 4: The formwork for pouring concrete on site is set up, and the prefabricated shear wall and the composite slab bottom plate can be used to fix and support the formwork; Step 5: Concrete is poured on the upper part of the composite slab, the edge components of the shear wall and the horizontal post-casting strip, and the upper and lower shear walls and the composite slab are connected into a whole by the horizontal post-casting strip; Step 6: After the concrete strength of this layer meets the requirements, steps 2 to 5 can be repeated to carry out the construction of the upper layer.

4. The assembled reinforced concrete shear wall according to claim 3, characterized in that: The shape of the longitudinal steel bars at the upper end of the reinforced concrete block in the horizontal post-casting strip is L-shaped.

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