CN110565837A - Suspended precast shear wall semi-buried inner wall connecting structure and method - Google Patents

Abstract

The invention discloses a semi-buried interior wall connection structure and method of a suspended prefabricated shear wall, belonging to the field of fabricated concrete structures. The structure is used to connect the upper and lower suspended walls, wherein there is a load-bearing rod in the lower bracket wall, and the load-bearing rod is connected to the upper suspended wall with the lifting frame through bolts, and then the penetrating wall that has been completely screwed into the lower bracket wall The nuts are reversely screwed back to the protruding steel bars of the upper suspended wall to complete the steel bar connection; the prefabricated floor is installed on the cantilever plate at the bottom of the lifting frame, and the upper layer of the floor is passed through the half-buried connection area and fixed to the bow-shaped steel bars on the prefabricated floor The frame forms a steel mesh, and concrete is poured to form the entire pouring surface layer to complete the wall connection. The connection structure of the present invention can effectively control the construction quality of the prefabricated component connection area by suspending the aerial shear wall through the lifting frame, connecting the steel bars through threads, and reducing the elevation of the upper wall structure, and can effectively control the construction quality of the connection area of the prefabricated components, and at the same time reduce the project cost and facilitate construction. process.

Description

A suspended prefabricated shear wall semi-buried interior wall connection structure and method

technical field

The invention belongs to the field of prefabricated concrete structures, in particular to a semi-buried inner wall connection structure of suspended prefabricated shear walls.

Background technique

The prefabricated concrete structure is the main structural form of my country's construction industrialization. The main construction process is to prefabricate the prefabricated components in the factory, and then complete the installation of the components at the construction site according to the predetermined connection method, and the installation sequence of the upper and lower structural components is Lower wall → prefabricated laminated slab → cast-in-place surface layer → upper wall (transformed into lower wall) → prefabricated laminated slab → cast-in-place surface layer →, the upper wall installation in the last step is mainly the connection of steel bars, using Grouting connection, commonly known as "black box operation", has the disadvantage that it is difficult to control the amount of grouting construction, and it is affected by many factors, such as the ratio of grouting materials, the technical level of workers and the operating space.

Contents of the invention

In order to solve the problems of the prior art, the present invention proposes a semi-buried interior wall connection structure of suspended prefabricated shear walls, which specifically includes:

A suspended prefabricated shear wall semi-buried interior wall connection structure, the connection structure is used for the connection of the prefabricated upper suspended wall and the lower wall, including the upper suspended wall connection structure, the lower wall connection structure and the intermediate pouring structure ; The upper suspended wall connection structure is used to support the self-weight of the upper suspended wall, and at the same time, the upper suspended wall is connected to the lower wall through the connection with the lower wall connection structure; the lower wall connection structure is passed The connection with the connection structure of the upper suspension wall connects the lower wall with the upper suspension wall; the intermediate pouring structure is located at the connection between the upper suspension wall connection structure and the lower wall connection structure, and is used for After being connected with the lower wall, it is poured in the intermediate pouring structure.

Specifically, the above-suspended wall connection structure includes a lifting frame, a prefabricated upper end threaded steel bar, a steel bar positioning plate and a control line for the entire pouring surface layer;

The lifting frame includes ear plates, cantilever plates, supporting angle steel, end anchor plates and prefabricated anchor bars; the ear plates are U-shaped structures, and the openings of the U-shaped structures are used to engage with the connection structure of the lower wall connection; each side of the lower surface of the cantilevered plate is connected with an ear plate, and the horizontal distance between the ear plates connected on both sides is not less than the thickness of the upper suspended wall or the lower wall; the upper surface of the cantilevered plate is connected Support angle steel; the support angle steel is connected with an end anchor plate, and the end anchor plate is connected with two prefabricated anchor bars, and the end anchor plate and the prefabricated anchor bars form a whole to fix the lifting frame on the upper suspended wall;

The prefabricated upper end threaded steel bar includes a threaded end;

The reinforcing bar positioning plate is used for fixing the prefabricated anchor bar and the threaded end of the prefabricated upper end threaded steel bar at the same time;

The entire pouring surface layer control line is used to control the pouring thickness of the intermediate pouring structure.

Specifically, the length of the cantilevered plate is 30mm greater than the thickness of the upper suspended wall.

Specifically, the reinforcing bar positioning plate is a 2 mm thick rectangular steel plate, and holes are reserved on it for passing through the threaded end of the prefabricated upper end threaded steel bar and the prefabricated anchor bar.

Specifically, the lower wall connection structure includes load-bearing rods, prefabricated lower end threaded steel bars and coaxial nuts;

The bearing rod includes an end plate, a connecting rod and a fixing device, the end plate is a rectangular plate, the left and right ends of the connecting rod respectively pass through the end plate, the length of the connecting rod is equal to the thickness of the lower wall, and A fixing device is provided at the position where the rod passes through the end plate; the fixing device includes a U-shaped supplementary plate that fits and engages with the opening of the U-shaped structure of the ear plate;

The prefabricated lower end threaded steel bar includes a threaded end;

The coaxial nut is used to connect the threaded end of the prefabricated upper threaded steel bar and the threaded end of the prefabricated lower threaded steel bar.

Specifically, the intermediate pouring structure includes a prefabricated bottom slab, and the prefabricated bottom slab contains a plurality of horizontal prefabricated steel bars inside, and the prefabricated steel bars are fixed by bow-shaped steel bar fixing frames, and the steel bar fixing frames are perpendicular to the axis direction of the prefabricated steel bars; The steel bar fixing frame includes a plurality of raised protrusions, and a fixing strip connecting the lowest points of adjacent protrusions, one side of the protrusion facing the prefabricated steel bar opens, and the other side opposite to the opening side of the protrusion protrudes The prefabricated base plate; the prefabricated reinforcement intervals are located in the convex part of the steel bar fixing frame and on the fixing bar, and all the reinforcing bars are fixed as a whole through the convex part and the fixing bar.

More specifically, the thickness of the prefabricated bottom plate is 40 mm, and the other side opposite to the opening side of the convex part exceeds the prefabricated bottom plate by 80 mm.

The present invention also proposes a method for connecting semi-buried interior walls of suspended prefabricated shear walls using the above-mentioned connection structure, which is used for the connection between the prefabricated upper suspended wall and the lower wall. The connection method first connects the lower wall The structure is connected to the lower wall, and then the upper suspended wall connection structure is prefabricated and connected to the upper suspended wall, and then the lower wall and the upper suspended wall are connected through the connection structure of the lower wall connection structure and the upper suspended wall. Connection, and finally pouring through the intermediate pouring structure perpendicular to the upper hanging wall. After the pouring is completed, the upper hanging wall will be used as the lower wall to continue the connection of the upper hanging wall.

Specifically, the method includes the following steps in sequence:

Step 1, prefabrication and maintenance of the upper suspended wall, the lower wall and the prefabricated floor: the prefabricated anchor bar and the prefabricated upper end threaded steel bar are prefabricated in the upper suspended wall, the prefabricated lower end threaded steel bar is prefabricated in the lower wall, and the prefabricated The threaded end of the upper end threaded steel bar is reserved outside the upper suspended wall, the threaded end of the prefabricated lower end threaded steel bar is reserved outside the lower wall, and the prefabricated lower end threaded steel bar and the prefabricated upper end threaded bar are both longitudinal in the wall. Steel bars; part of the steel bar fixing frame is reserved outside the prefabricated floor;

Step 2, connect the load-bearing rod to the lower wall, the two ends of the end plate are stuck on the lower wall along the thickness direction of the lower wall, the upper surface of the end plate is flush with the top surface of the lower wall, and the coaxial nut is pre-installed The threaded steel bar at the prefabricated lower end has a threaded end; snap the lug plate of the connection structure of the upper suspension wall into the end of the connecting rod, the length of the connecting rod is equal to the distance between the lug plates of the lifting frame, and adjust the verticality of the upper suspension wall , fixing the fixing device, and simultaneously connecting the threaded end of the prefabricated lower end threaded steel bar with the threaded end of the prefabricated upper end threaded steel bar through the coaxial nut, to complete the semi-suspended connection of the upper suspended wall;

Step 3. Connect the prefabricated floor. The part of the cantilevered slab that exceeds the upper suspended wall is used to temporarily assist in fixing the prefabricated floor. After the prefabricated floor is located on the cantilevered slab, fix the upper horizontal steel bars in the floor to the level of the convex part of the steel bar fixing frame part;

Step 4, pouring the entire pouring surface layer on site, and completing the concrete pouring of the entire pouring surface layer according to the entire pouring surface layer control line of the upper suspended wall;

Step 5: After the pouring is completed, the upper suspended wall is used as the lower wall to continue the connection of the upper suspended wall until the semi-buried inner wall connection of the suspended prefabricated shear wall is completed.

More specifically, in step 1, when the upper suspended wall is prefabricated, the prefabricated upper-end threaded reinforcement is parallel to the anchor bar, and the prefabricated upper-end threaded reinforcement is threaded at both ends of the longitudinal reinforcement of the wall to form a 40mm long thread; the distance between the horizontal prefabricated reinforcement and The prefabricated upper end threaded steel bars or the prefabricated lower end threaded steel bars are equally spaced; the coaxial nut is a cylinder with threads engraved on the inner surface, and the wall thickness is 5mm.

The present invention has following effect:

The connection structure of the present invention is used to connect the semi-buried inner wall of the suspended prefabricated shear wall, and the installation sequence of the upper and lower layers of prefabricated components is reasonably adjusted, and the optimal installation sequence is lower wall → upper wall → prefabricated laminated floor → existing Casting layer→upper wall is transformed into lower wall→upper wall→prefabricated laminated floor→cast-in-place surface layer→…, which can effectively control the construction quality of the connection area of prefabricated components, and at the same time reduce the project cost and Simple construction process. At the same time, the amount of grouting construction can be effectively controlled through the control line of the entire pouring surface layer.

Description of drawings

In order to illustrate the technical solution of the present invention more clearly, the accompanying drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. Ordinary technicians can also obtain other drawings based on these drawings on the premise of not paying creative work.

Fig. 1 is a schematic diagram of a semi-buried interior wall connection structure of a suspended prefabricated shear wall provided by the present invention;

Fig. 2 (a) is the upper suspended wall schematic diagram of a kind of suspended prefabricated shear wall semi-buried inner wall connection structure provided by the present invention;

Fig. 2 (b) is the lifting frame schematic diagram of a kind of suspended prefabricated shear wall semi-buried inner wall connection structure provided by the present invention;

Fig. 2 (c) is a schematic diagram of a reinforcing bar positioning plate of a semi-buried interior wall connection structure of a suspended prefabricated shear wall provided by the present invention;

Fig. 3 (a) is the lower bracket wall schematic diagram of a kind of suspended prefabricated shear wall semi-buried inner wall connection structure provided by the present invention;

Fig. 3 (b) is a schematic diagram of a bearing bar of a semi-buried interior wall connection structure of a suspended prefabricated shear wall provided by the present invention;

Fig. 3 (c) is a schematic diagram of a fixture of a semi-buried interior wall connection structure of a suspended prefabricated shear wall provided by the present invention;

Fig. 3 (d) is the schematic diagram of the coaxial nut of a kind of suspension prefabricated shear wall semi-buried inner wall connection structure provided by the present invention;

Fig. 4 is a schematic view of the entire pouring surface layer of a semi-buried inner wall connection structure of a suspended prefabricated shear wall provided by the present invention;

Fig. 5 is a schematic diagram of a prefabricated bottom plate of a semi-buried interior wall connection structure of a suspended prefabricated shear wall provided by the present invention.

The meanings of the symbols in the figure are:

1. The upper suspended wall, 2. The lower wall, 3. The poured surface layer, 4. The prefabricated laminated floor;

11 lifting frame, 12 steel bar positioning plate, 13 prefabricated upper end threaded steel bar, 14 whole pouring surface layer control line;

111 lug plate, 112 cantilever plate, 113 support angle steel, 114 end anchor plate, 115 prefabricated anchor bar;

21 bearing rod, 22 prefabricated lower end threaded steel bars, 23 coaxial nuts;

211 connecting rod, 212 end plate, 213 hex nut, 214 fixing device;

2141 U-type supplementary plate, 2142 ring clamping position;

42 prefabricated steel bars, 43 steel bar fixing frames.

Detailed ways

In order to make the structure and advantages of the present invention clearer, the structure of the present invention will be further described below in conjunction with the accompanying drawings.

Example 1:

This embodiment provides a suspended prefabricated shear wall semi-buried interior wall connection structure, which includes an upper suspended wall 1 , a lower wall 2 , a poured surface layer 3 and a prefabricated laminated floor 4 . The lower wall 2 here is also the lower bracket wall, in which the upper suspended wall 1, the lower bracket wall, the prefabricated bottom plate 4 and their accessories are manufactured and maintained in the prefabrication factory, and the whole pouring surface layer 3 is completed in the floor slab Concrete is poured on site after binding the upper steel bars to complete the wall connection.

The upper suspended wall body 1 includes a lifting frame 11 , a steel bar positioning plate 12 , a prefabricated upper end threaded steel bar 13 and a control line 14 for the entire pouring surface layer.

The lifting frame 11 is composed of an ear plate 111, a cantilever plate 112, a supporting angle steel 113, an end anchor plate 114 and a prefabricated anchor bar 115; one end of the ear plate 111 is provided with a “U”-shaped notch, two of which form a group, and the cantilever plate 112 The length is greater than the thickness of the wall by 30 mm, the supporting angle steel 113 bears the weight of the wall, and the end anchor plate 114 and the prefabricated anchor bar 115 form a whole to fix the lifting frame in the upper suspended wall 1 .

The lifting frame 11 is "I" type, and the cantilever plate 112 and the end anchor plate 114 are set horizontally. The former is used to temporarily fix the prefabricated floor 4, and the latter is integrated with the prefabricated anchor bar 115. After the prefabricated anchor bar 115 passes through the steel bar The positioning plate 12 is thick, and the lifting frame 11 and the upper suspended wall 1 are formed as a whole, and finally the suspended function of the upper suspended wall 1 is realized; the ear plate 111 and the supporting angle steel 113 are vertically arranged, and the former passes through the wall of the lower bracket wall. The connecting rod 211 of the load-bearing rod 21 is initially fixed, which is convenient for adjusting the verticality of the upper suspended wall 1. The latter is the main device for bearing the self-weight of the upper suspended wall 1, and forms a suspended space, which is convenient for the upper layer of the floor to pass through and form a whole .

The reinforcing bar positioning plate 12 of the upper suspended wall 1 is a 2 mm thick rectangular steel plate, which is located on the side of the wall close to the floor, and the prefabricated upper end threaded steel bar 13 of the upper suspended wall 1 and the prefabricated anchor bar 115 of the lifting frame 11 are reserved for passing through. At the same time, during the factory prefabrication stage of the upper hanging wall 1, the formwork on the lower side of the wall is taken into account. The end threaded steel bars 13/22 of the upper suspended wall body 1 and the lower bracket wall body are longitudinal steel bars in the wall body, and the two ends are carved with threads to form 40mm long threads, which are connected by coaxial nuts 23 .

The lower bracket wall includes load-bearing rods 21 , threaded steel bars 22 at the ends, and coaxial nuts 23 .

The load-bearing rod 21 of the lower bracket wall is a "shoulder pole" type, including an end plate 212, a connecting rod 211, a hex nut 213 and a fixing device 214; wherein the end plate 212 is a rectangular steel plate, and a round hole is arranged on the upper side in the middle. And the upper surface is flush with the top surface of the wall; the length of the connecting rod 212 is equal to the thickness of the wall, and the two ends are provided with threads, and the end plate 212 penetrates the connecting rod 211 through a round hole, and the distance between the end plates 212 on both sides is the same as that of the lifting frame 11. The spacing between the ear plates 111 is equal; the fixing device 214 is composed of a "U"-shaped supplementary plate 2141 and an annular clamping position 2142. The gaps are matched, and the annular clamping position 2142 is inserted into the thread of the connecting rod 212, which is mainly used to provide a complete pressure receiving surface for the ear plate 111.

The lower bracket wall pre-embeds the load-bearing rod 21 to reserve the installation space for the lifting frame 11 ear plate 111 and the fixing device 214. First, install the upper suspended wall 1, and insert the ear plates 111 on both sides of the lifting frame 11 into the load-bearing rod. 21 The end of the connecting rod 211 is placed with a fixing device 21, and after the body of wall is correctly in place, it is fixed with a hex nut 213 to form a suspended upper suspension wall 1.

The coaxial nut 23 of the lower bracket wall is a cylinder whose length is equal to the prefabricated lower end threaded steel bar 22 protruding from one side of the wall. The threaded steel bar 22 at the end of the upper suspension wall 1 is fixed, and the coaxial nut 23 that is completely screwed into the wall of the lower bracket is reversely screwed back to the middle part of the connection between the two end threaded steel bars 13/22, and the completion Rebar mechanical connection.

The entire pouring surface layer 3 and the prefabricated laminated floor 4 include steel bars 33/42 and "bow" type steel bar fixing frames 43 .

The thick bottom of the prefabricated laminated floor 4 is 40 mm, and the internal steel bars are composed of horizontal steel bars and "bow" type steel bar fixing frames 43. The height of the "bow" type steel bar fixing frame 43 is 80mm, a part of the vertical steel bar is prefabricated on the prefabricated laminated floor 4, the height is 80mm, and the horizontal steel bar spacing is equal to the steel bar spacing in the floor slab. One side of the "bow" type steel bar fixing frame 43 is pre-embedded in the prefabricated floor during the factory prefabrication stage, and the other side protrudes. The upper level horizontal steel bar is fixed on the horizontal part of " bow " type steel bar fixing frame 43 protruding positions.

Concrete pouring of the entire pouring surface layer 3 is completed according to the entire pouring surface layer control line 14 of the upper suspended wall body 1 .

The implementation process of a suspended prefabricated shear wall semi-buried interior wall connection structure is as follows:

The first step: the production of the hoisting frame is completed by the lug plate, cantilever plate, support angle steel, end anchor plate and anchor bar, and the end plate, connecting rod, hexagon nut and fixing device are used to complete the production of the load-bearing bar. Welding technology, mechanical Joining or other workmanship; completion of coaxial nuts and other fittings.

Step 2: Pass the anchor bar of the lifting frame through the steel bar positioning plate, pass the threaded steel bar at the end of the longitudinal steel bar in the wall through the steel bar positioning plate, and fix the steel bar positioning plate and other formwork devices of the prefabricated components, and tie them horizontally The steel bars and the upper part of the wall are pre-embedded bearing rods, and concrete is poured to form prefabricated components, wherein the reserved space for installation of the bearing rods is formed by foam plastics.

The third step: laying the prefabricated bottom slab steel bars and "bow" type steel bar fixing frame to complete the factory production and maintenance of the prefabricated bottom slab.

Step 4: Installation on the construction site, the installation process is: lower wall → upper wall → prefabricated laminated slab → cast-in-place surface layer → upper wall transformed into lower wall → upper wall → prefabricated laminated slab → cast-in-place surface layer . The details are as follows: After the lower wall is installed, pass the lug plate of the upper wall through the connecting rod of the load-bearing rod, after adjusting the verticality, install the fixing device, and finally fix the upper wall with hexagonal nuts to complete half of the upper wall. Suspended installation, then install the prefabricated bottom slab, tie the steel mesh on the upper floor of the slab, form the thickness of the slab through the "bow" type steel bar fixing frame, and finally pour concrete to the control line of the entire pouring surface layer to complete the connection of the inner wall of the prefabricated shear wall.

In the implementation process of the semi-buried inner wall connection structure of a suspended prefabricated shear wall of the present invention, other construction devices are needed, such as screw to adjust the verticality of the wall, and scaffolding to fix the prefabricated floor to bear the construction load and so on.

It should be noted that: the embodiment of a suspended prefabricated shear wall semi-buried interior wall connection structure provided by the above embodiment is only used as an illustration of the actual application of the connection structure, and it can also be used according to actual needs. However, when the above connection structure is used in other application scenarios, the specific implementation process is similar to the above embodiment, and will not be repeated here.

The serial numbers in the above embodiments are for description only, and do not represent the sequence of the components during assembly or use.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention Inside.

In addition, the "upper" and "lower" mentioned in the present invention are divided according to the sequence of wall installation, and there is no absolute positional relationship. The structural parts are prefabricated and need to be prefabricated and maintained in advance.

Claims (10)

1. A suspended prefabricated shear wall semi-buried inner wall connecting structure is used for connecting a prefabricated upper suspended wall body (1) and a prefabricated lower wall body (2), and is characterized by comprising an upper suspended wall body connecting structure, a lower wall body connecting structure and a middle pouring structure;

the upper suspended wall body connecting structure is used for supporting the self weight of the upper suspended wall body (1), and meanwhile, the upper suspended wall body (1) is connected with the lower layer wall body (2) through the connection with the lower layer wall body connecting structure;

the lower-layer wall body connecting structure connects the lower-layer wall body (2) with the upper suspended wall body (1) through the connection with the upper suspended wall body connecting structure;

the middle pouring structure is located at the joint of the upper suspended wall body connecting structure and the lower layer wall body connecting structure and is used for pouring in the middle pouring structure after the upper suspended wall body (1) and the lower layer wall body (2) are connected.

2. The suspended precast shear wall semi-buried inner wall connecting structure according to claim 1, wherein the upper suspended wall body connecting structure comprises a hoisting frame (11), precast upper end head thread steel bars (13), a steel bar positioning plate (12) and a whole pouring surface layer control line (14);

The lifting frame (11) comprises ear plates (111), a cantilever plate (112), support angle steel (113), an end anchor plate (114) and a prefabricated anchor bar (115); the ear plate (111) is of a U-shaped structure, and an opening of the U-shaped structure is used for being clamped and connected with the lower-layer wall connecting structure; two sides of the lower surface of the cantilever plate (113) are respectively connected with an ear plate (111), and the horizontal distance between the ear plates (111) connected with the two sides is not less than the thickness of the upper suspended wall body (1) or the lower layer wall body (2); the upper surface of the cantilever plate (112) is connected with a support angle steel (113); the supporting angle steel (113) is connected with an end anchor plate (114), the end anchor plate (114) is connected with two prefabricated anchor bars (115), and the end anchor plate (114) and the prefabricated anchor bars (115) form a whole body which is used for fixing the lifting frame (11) on the upper suspended wall body (1);

The prefabricated upper end head thread steel bar (13) comprises a thread end;

the steel bar positioning plate (12) is used for fixing the prefabricated anchor bar (115) and the end with the threads of the prefabricated upper-end threaded steel bar (13) at the same time;

the whole pouring surface layer control line (14) is used for controlling the pouring thickness.

3. The suspended precast shear wall semi-buried inner wall connecting structure as recited in claim 2, wherein the length of the cantilever plate (112) is 30mm greater than the thickness of the upper suspended wall body (1).

4. The connecting structure of the suspended precast shear wall and the semi-buried inner wall as claimed in claim 2, wherein the steel bar positioning plate (12) is a rectangular steel plate with the thickness of 2mm, and a hole is reserved on the steel bar positioning plate for penetrating out of the threaded end of the precast upper end head thread steel bar (13) and the precast anchor bar (115).

5. The suspended precast shear wall semi-buried inner wall connecting structure according to claim 1, wherein the lower wall connecting structure comprises a bearing rod (21), a precast lower end head thread steel bar (22) and a coaxial nut (23);

the bearing rod (21) comprises an end plate (212), a connecting rod (211) and a fixing device (214), wherein the end plate (212) is a rectangular plate, the left end and the right end of the connecting rod (221) respectively penetrate through the end plate (212), the length of the connecting rod (211) is equal to the thickness of the lower-layer wall body (2), and the fixing device (214) is arranged at the position where the connecting rod (211) penetrates through the end plate (212); the fixing device (214) comprises a U-shaped position supplementing plate (2141) which is matched and clamped with an opening of the U-shaped structure of the ear plate (111);

The prefabricated lower end head thread steel bar (22) comprises a thread end;

the coaxial nut (23) is used for connecting one end with threads of the prefabricated upper end head thread steel bar (13) and one end with threads of the prefabricated lower end head thread steel bar (22).

6. The suspended precast shear wall semi-buried inner wall connecting structure according to claim 1, wherein the intermediate pouring structure comprises a precast laminated bottom plate (4), a plurality of horizontal precast reinforcing steel bars (42) are contained in the precast laminated bottom plate (4), the precast reinforcing steel bars (42) are fixed by an arch-shaped reinforcing steel bar fixing frame (43), and the reinforcing steel bar fixing frame (43) is perpendicular to the axial direction of the precast reinforcing steel bars (42);

The steel bar fixing frame (43) comprises a plurality of convex parts and fixing strips for connecting the lowest points of the adjacent convex parts, one side of the convex part facing the prefabricated steel bar (42) is opened, and the other side opposite to the opening side of the convex part exceeds the prefabricated superposed bottom plate (4);

the prefabricated steel bars (42) are positioned in the convex parts of the steel bar fixing frame (43) and on the fixing strips at intervals, and all the prefabricated steel bars (42) are fixed into a whole through the convex parts and the fixing strips.

7. the suspended precast shear wall semi-buried inner wall connection structure according to claim 6, wherein the thickness of the precast laminated bottom plate (4) is 40mm, and the other side opposite to the opening side of the convex part exceeds the precast laminated bottom plate (4) by 80 mm.

8. a method for connecting a suspended prefabricated shear wall semi-buried inner wall by using the connecting structure of claim 1, 2, 5 or 6 is used for connecting a prefabricated upper suspended wall body (1) and a lower wall body (2), and is characterized in that the connecting method comprises the steps of firstly connecting the lower wall body connecting structure to the lower wall body (2), then prefabricating and connecting the upper suspended wall body connecting structure to the upper suspended wall body (1), then connecting the lower wall body (2) and the upper suspended wall body (1) through the connection of the lower wall body connecting structure and the upper suspended wall body connecting structure, finally pouring through a middle pouring structure perpendicular to the upper suspended wall body (1), and after pouring is finished, continuing to connect the upper suspended wall body (1) as the lower wall body (2).

9. The method according to claim 8, characterized in that it comprises in particular the steps of:

Step 1, prefabricating and maintaining an upper suspended wall body (1), a lower layer wall body (2) and a prefabricated superposed bottom plate (4): the prefabricated anchor bar (115) and the prefabricated upper end head thread steel bar (13) are prefabricated in the upper suspended wall body (1), the prefabricated lower end head thread steel bar (22) is prefabricated in the lower layer wall body (2), the end with threads of the prefabricated upper end head thread steel bar (13) is reserved outside the upper suspended wall body (1), the end with threads of the prefabricated lower end head thread steel bar (22) is reserved outside the lower layer wall body (2), and the prefabricated lower end head thread steel bar (22) and the prefabricated upper end head thread steel bar (13) are longitudinal steel bars in the wall body; part of the steel bar fixing frame (43) is reserved outside the prefabricated superposed bottom plate (4);

Step 2, connecting the bearing rod (21) on the lower-layer wall body (2), clamping two ends of an end plate (212) on the lower-layer wall body (2) along the thickness direction of the lower-layer wall body (2), enabling the upper surface of the end plate (212) to be flush with the top surface of the lower-layer wall body (2), and pre-installing a coaxial nut (23) on the threaded end of the prefabricated lower end head threaded steel bar (22); clamping and embedding the lug plates (111) of the upper suspended wall body connecting structure into the end parts of the connecting rods (211), wherein the length of the connecting rods (211) is equal to the distance between the lug plates (111) of the lifting frame (11), after the verticality of the upper suspended wall body (1) is adjusted, fixing the fixing device (214), and simultaneously connecting the threaded end of the prefabricated lower end head thread steel bar (22) with the threaded end of the prefabricated upper end head thread steel bar (13) through the coaxial nut (23) to complete the semi-suspended connection of the upper suspended wall body (1);

step 3, connecting the prefabricated laminated bottom plate (4), temporarily assisting and fixing the prefabricated laminated bottom plate (4) at the part of the cantilever plate (112) exceeding the upper suspended wall body (1), and fixing the upper-layer horizontal steel bars in the floor slab to the convex horizontal part of the steel bar fixing frame (43) after the prefabricated laminated bottom plate (4) is positioned on the cantilever plate (112);

Step 4, pouring the whole cast surface layer (3) in situ, and finishing concrete pouring of the whole cast surface layer (3) according to a whole cast surface layer control line (14) of the upper suspended wall body (1);

And 5, after the pouring is finished, the upper suspended wall body (1) is used as the lower layer wall body (2) again to continue to be connected with the upper suspended wall body (1) until the connection of the semi-buried inner wall of the suspended prefabricated shear wall is finished.

10. The method of claim 9, wherein in the step 1, when the upper suspended wall body (1) is prefabricated, the prefabricated upper end threaded steel bars (13) are parallel to the prefabricated anchor bars (115), and the prefabricated upper end threaded steel bars (13) are threaded at two ends of the longitudinal steel bars of the wall body to form threads with the length of 40 mm; the distance between the prefabricated steel bars (42) is equal to the distance between the prefabricated upper end head thread steel bars (13) or the prefabricated lower end head thread steel bars (22); the coaxial nut (23) is a cylinder, the inner side surface of the coaxial nut is carved with threads, and the wall thickness is 5 mm.