CN220814376U - Prefabricated cavity wall splicing structure and water service wall - Google Patents

Abstract

The utility model relates to the technical field of water service walls, and discloses a prefabricated cavity wall splicing structure and a water service wall, wherein the prefabricated cavity wall splicing structure is used for connecting adjacent prefabricated cavity walls which are arranged in a straight shape and comprises a cast-in-situ layer, a connecting steel bar assembly and a close joint, which are sequentially arranged from inside to outside; the cast-in-situ layer is connected between the inner blades of the adjacent prefabricated cavity walls; the connecting steel bar assemblies are arranged at intervals along the height direction of the prefabricated cavity wall, the connecting steel bar assemblies are arranged between the inner leaf plates and the outer leaf plates of the prefabricated cavity wall, one side edge of each connecting steel bar assembly is arranged in the cast-in-situ layer, and two ends of each connecting steel bar assembly are respectively connected with the prefabricated horizontal steel bars of the adjacent prefabricated cavity wall; the close joint is connected between the outer blades of the adjacent prefabricated cavity walls. The utility model can ensure the connection strength and reliability of the splicing structure between the adjacent prefabricated cavity walls, improve the engineering quality and reduce the engineering quality defect.

Description

Prefabricated cavity wall splicing structure and water service wall

Technical Field

The utility model relates to the technical field of water service walls, in particular to a prefabricated cavity wall splicing structure and a water service wall.

Background

The prefabricated cavity wall comprises an inner blade plate, an outer blade plate and a cavity arranged between the inner blade plate and the outer blade plate. The double-sided precast concrete leaf plate not only serves as a template at a construction site, but also participates in the integral stress of the structure, meanwhile, the middle cavity is used for continuously pouring concrete at the site, and the integral laminated structure after hardening can achieve good compactness and has good waterproof and impervious effects. The superimposed shear wall structure meets the special requirements of water resistance and seepage resistance of the water service project, and meanwhile, due to the prefabricated construction advantages of the superimposed shear wall structure, the assembled development of the water service project can be smoothly driven.

The water service project wall is higher, the thickness of the root is larger and can reach 1000mm, the wall is generally made into a variable cross section from the viewpoint of saving materials, namely, the shape of small upper part and large lower part, vertical splicing seams among prefabricated walls need to bear out-of-plane load working conditions, and the existing water service wall adopts a cast-in-place structure, so that quality defects are easy to occur.

Disclosure of utility model

In view of the above, the utility model provides a prefabricated cavity wall splicing structure and a water service wall, which are used for solving the problem that quality defects are easy to occur when the water service wall adopts a cast-in-place structure.

In a first aspect, the utility model provides a prefabricated cavity wall splicing structure, which is used for connecting adjacent prefabricated cavity walls which are arranged in a straight line, and comprises a cast-in-situ layer, a connecting steel bar assembly and a close splice which are sequentially arranged from inside to outside; the cast-in-situ layer is connected between the inner blades of the adjacent prefabricated cavity walls; the connecting steel bar assemblies are arranged at intervals along the height direction of the prefabricated cavity wall, the connecting steel bar assemblies are arranged between the inner leaf plates and the outer leaf plates of the prefabricated cavity wall, one side edge of each connecting steel bar assembly is arranged in the cast-in-situ layer, and two ends of each connecting steel bar assembly are respectively connected with the prefabricated horizontal steel bars of the adjacent prefabricated cavity wall; the close joint is connected between the outer blades of the adjacent prefabricated cavity walls.

The beneficial effects are that: because the wall body is used in the water service field, the water facing side is the side with the greatest stress, and the two adjacent inner blades are connected through the cast-in-situ layer, the connection strength of the prefabricated cavity wall splicing structure can be ensured, the wall body is allowed to bear larger load, and meanwhile, the thickness of the protective layer of the reinforcing steel bars arranged on the inner blade side is easier to ensure. The adjacent outer blades are connected through the close joint, so that the outer blades can be tightly connected, the soil retaining side is used, the width of the operating surface of the foundation pit can be reduced, and the earthwork amount of excavation of the foundation pit is reduced. By arranging the steel bar connecting assembly between the cast-in-situ layer and the close joint, and connecting the steel bar connecting assembly with the prefabricated horizontal steel bars of the prefabricated cavity walls, one side of the steel bar connecting assembly, which is close to the inner leaf plate, is arranged in the cast-in-situ layer, so that the connection strength and the reliability of the splicing structure between the adjacent prefabricated cavity walls can be ensured, the engineering quality is improved, and the engineering quality defects are reduced.

In an alternative embodiment, the length of the inner lobes of the prefabricated cavity wall is less than the length of the outer lobes of the prefabricated cavity wall; the prefabricated horizontal steel bars of the prefabricated cavity walls are of closed embracing ring structures, the prefabricated horizontal steel bars are provided with splicing sections exposing the inner leaf plates, and the connecting steel bar assemblies are connected with the splicing sections of the prefabricated horizontal steel bars of the two adjacent prefabricated cavity walls.

The beneficial effects are that: the connecting length between the connecting steel bar assembly and the adjacent two prefabricated horizontal steel bars can be increased, the strength of the prefabricated cavity wall splicing structure is improved, and the quality defect is further reduced.

In an alternative embodiment, the connecting bar assembly comprises a horizontal first connecting bar, the horizontal first connecting bar being of a closed loop configuration, the horizontal first connecting bar being horizontally overlapped with the spliced segments of two adjacent prefabricated horizontal bars.

The beneficial effects are that: the first connecting reinforcement of level is confined annular structure, can improve the structural strength of first connecting reinforcement of level self, and the prefabricated horizontal reinforcing bar of level first connecting reinforcement and embracing the ring is connected, further improves mosaic structure's joint strength.

In an alternative embodiment, the prefabricated horizontal reinforcement bar comprises a first long side arranged in the inner leaf plate and a second long side arranged in the outer leaf plate, the horizontal first connecting reinforcement bar comprises a first connecting side parallel to the first long side and a second connecting side parallel to the second long side, the first connecting side and the first long side overlap in the height direction and are arranged in the cast-in-situ layer, the second connecting side is arranged close to the second long side, and the gap between the second connecting side and the second long side is not more than four times of the diameter of the prefabricated horizontal reinforcement bar.

The beneficial effects are that: the first connecting edge and the first long edge are arranged in the cast-in-situ layer, so that the connection strength of the splicing structure of the adjacent prefabricated cavity walls is further improved. The second connecting edge is close to the second long edge, and the gap between the second connecting edge and the second long edge is not more than four times of the diameter of the prefabricated horizontal steel bars, so that the size of the horizontal first connecting steel bars can be increased as much as possible, and the structural strength of the horizontal first connecting steel bars is improved.

In an alternative embodiment, the outer blade plate and the inner blade plate are internally provided with a plurality of prefabricated vertical steel bars arranged at intervals, the prefabricated vertical steel bars are connected with prefabricated horizontal steel bars, the prefabricated vertical steel bars are arranged on one side far away from the cavity, and the prefabricated horizontal steel bars are arranged on one side close to the cavity.

The beneficial effects are that: the arrangement rule of the reinforcing steel bars of the prefabricated cavity wall is met, and the structural strength of the prefabricated cavity wall and the connection strength of the splicing structures of the adjacent cavity walls are improved.

In an alternative embodiment, prefabricated tie bars are arranged in the prefabricated cavity walls, hooks are arranged at two ends of the prefabricated tie bars, and hook the prefabricated vertical steel bars in the inner leaf plates and the outer leaf plates and are fixedly connected; when the width of the cast-in-situ layer is smaller than the anchoring length of the horizontal first connecting steel bars, the connecting steel bar assembly further comprises horizontal second connecting steel bars, the horizontal second connecting steel bars and the second connecting edges of the horizontal first connecting steel bars are overlapped in the height direction, and two ends of the horizontal second connecting steel bars extend into the cavities of the two prefabricated cavity walls respectively and are connected with the prefabricated tie bars.

The beneficial effects are that: at the anchor length of horizontal first connecting reinforcement at some time, additional horizontal second connecting reinforcement makes the connecting reinforcement subassembly can satisfy the concatenation anchor to two prefabricated cavity walls.

In an alternative embodiment, the bottom of the prefabricated cavity wall is suitable for being connected to a cast-in-situ guide wall, a water stop steel plate is arranged on the cast-in-situ guide wall, the upper end face of the cast-in-situ guide wall appears at the upper part of the water stop steel plate, the splicing sections of the prefabricated horizontal steel bars are broken and respectively form bending parts bending towards the inner leaf plate and the outer leaf plate, and the water stop steel plate is arranged between the two bending parts.

The beneficial effects are that: by the arrangement, interference between the prefabricated horizontal steel bars and the water stop steel plates can be avoided.

In an alternative embodiment, the horizontal first connecting steel bar comprises two connecting sections, the connecting sections comprise a body and bending parts located at two ends of the body, the bending parts of the two connecting sections are arranged in opposite directions, the water stop steel plate is arranged between the four bending parts in the same horizontal plane, and the four bending parts are welded with the water stop steel plate, so that the horizontal first connecting steel bar forms a closed rectangular structure.

The beneficial effects are that: the arrangement can solve the interference problem of the horizontal first connecting steel bars and the water stop steel plates at the bottom and ensure the connection strength of the horizontal first connecting steel bars.

In an alternative embodiment, the steel bar connecting assembly further comprises a plurality of horizontal tie bars horizontally arranged at intervals along the length direction of the prefabricated cavity wall, two ends of each horizontal tie bar are hooked, two ends of each horizontal tie bar respectively hook prefabricated vertical steel bars in the inner leaf plate and the outer leaf plate, and the horizontal tie bars are overlapped with the horizontal first connecting steel bars.

The beneficial effects are that: the setting like this for horizontal lacing wire, horizontal first connecting reinforcement and prefabricated horizontal reinforcing bar connect as a whole, retrain the deformation of framework of steel reinforcement effectively, have increased framework of steel reinforcement's rigidity and stability. Specifically, the horizontal lacing wires and the horizontal first connecting steel bars are fixedly connected through binding.

In an alternative embodiment, the horizontal lacing wire at the bottom of the prefabricated cavity wall comprises a first section and a second section which are horizontally arranged at intervals, and the water stop steel plate is arranged between the first section and the second section and welded with the first section and the second section respectively.

The beneficial effects are that: the arrangement can solve the problem of interference between the horizontal lacing wire and the water stop steel plate, and ensure the connection effect of the horizontal lacing wire.

In an alternative embodiment, the connecting bar assembly further comprises a plurality of vertical first connecting bars disposed on the inner blade side, and the plurality of vertical first connecting bars are disposed at intervals inside the horizontal first connecting bars.

The beneficial effects are that: the arrangement can improve the anchoring of the cast-in-situ layer in the vertical direction, namely in the height direction.

In an alternative embodiment, a vertical second connecting bar is arranged in a gap between a second connecting edge of the horizontal first connecting bar and a second edge of the prefabricated horizontal bar, the lower end of the vertical second connecting bar is connected with the cast-in-situ guide wall, and the upper end of the vertical second connecting bar extends into a cavity of the prefabricated cavity wall connected with the cast-in-situ guide wall.

The beneficial effects are that: because the prefabricated vertical steel bars in the prefabricated cavity wall and the prefabricated vertical steel bars in the cast-in-situ guide wall are discontinuous, the vertical second connecting steel bars are arranged in the gaps between the second connecting edges of the horizontal first connecting steel bars and the second edges of the prefabricated horizontal steel bars, and the connection strength between the cast-in-situ guide wall and the prefabricated wall body can be improved.

In an alternative embodiment, the outer leaf is disposed on the soil facing side and the inner leaf is disposed on the water facing side; the soil facing surface of the outer blade plate forms an included angle with the horizontal plane, and the included angle is larger than 90 degrees; the water surface of the inner leaf plate is vertical to the horizontal plane.

The beneficial effects are that: the cross section of the wall body is changed, and the wall body is suitable for water service walls. The wall body of the water service project is higher, the thickness of the root is larger and can reach 1000mm, and the wall body is generally made into a variable cross section, namely a shape with a small upper part and a large lower part from the viewpoint of saving materials.

In a second aspect, the utility model also provides a water service wall body, which comprises a plurality of prefabricated cavity walls, wherein the adjacent prefabricated cavity walls are spliced by adopting the prefabricated cavity wall splicing structure in any one of the technical schemes.

Because the water affair wall body includes prefabricated cavity wall mosaic structure, have the same effect with prefabricated cavity wall mosaic structure, and the description is omitted here again.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a horizontal cross-sectional view of a prefabricated cavity wall for which the prefabricated cavity wall splicing structure according to the embodiment of the present utility model is applicable;

FIG. 2 is a horizontal cross-sectional view of a first height of a prefabricated cavity wall splice structure according to an embodiment of the present utility model;

FIG. 3 is a horizontal cross-sectional view of a second height of a prefabricated cavity wall splice structure according to an embodiment of the present utility model;

FIG. 4 is a horizontal cross-sectional view of a second height of another prefabricated cavity wall panel splice structure according to an embodiment of the present utility model;

fig. 5 is a schematic structural view of the horizontal first connecting bar of fig. 3 or 4;

FIG. 6 is a schematic view of the horizontal lacing wire of FIG. 3 or FIG. 4;

FIG. 7 is a vertical partial cross-sectional view of a water service wall at a splice according to an embodiment of the present utility model;

fig. 8 is a partially enlarged schematic structural view of D in fig. 7.

Reference numerals illustrate:

1. A cast-in-situ layer; 2. connecting the steel bar assembly; 201. a horizontal first connecting bar; 202. a horizontal second connecting bar; 203. a vertical first connecting bar; 204. horizontal lacing wires; 205. welding spots; 206. a vertical second connecting steel bar; 3. closely splicing; 4. a sleeve; 10. prefabricating a cavity wall; 1001. an inner leaf; 10011. water surface; 1002. an outer leaf; 10021. a soil facing surface; 1003. prefabricating horizontal steel bars; 1004. prefabricating vertical steel bars; 1005. prefabricating lacing wires; 20. cast-in-situ guide wall; 30. and (5) a water-stopping steel plate.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The prefabricated cavity walls 10 are prefabricated walls, and when in construction, the adjacent prefabricated cavity walls 10 are spliced to form the building wall. The prefabricated cavity wall 10 comprises an inner leaf 1001, an outer leaf 1002 and a cavity arranged between the inner leaf 1001 and the outer leaf 1002, wherein a plurality of prefabricated horizontal steel bars 1003 and a plurality of prefabricated vertical steel bars 1004 are arranged in the inner leaf 1001 and the outer leaf 1002, the prefabricated horizontal steel bars 1003 are arranged at intervals along the height direction of the prefabricated cavity wall 10, and the prefabricated vertical steel bars 1004 are arranged at intervals along the length direction of the prefabricated cavity wall 10. The prefabricated cavity wall splicing structure provided by the embodiment is used for splicing the prefabricated cavity walls 10 which are arranged in a straight shape along the length direction, and is particularly applied to construction of variable-section water service walls. When the wall is used as a water service wall, the inner blade 1001 is positioned on the water facing side, and the outer blade 1002 is positioned on the soil facing side.

Embodiments of the present utility model are described below with reference to fig. 1 to 8.

According to the embodiment of the utility model, on one hand, a prefabricated cavity wall splicing structure is provided, and is used for connecting adjacent prefabricated cavity walls 10 which are arranged in a straight shape, and comprises a cast-in-situ layer 1, a connecting steel bar assembly 2 and a close splice 3 which are sequentially arranged from inside to outside; the cast-in-situ layer 1 is connected between the inner leaves 1001 of the adjacent prefabricated cavity walls 10; the connecting steel bar assemblies 2 are arranged at intervals along the height direction of the prefabricated cavity wall 10, the connecting steel bar assemblies 2 are arranged between the inner leaf plate 1001 and the outer leaf plate 1002 of the prefabricated cavity wall 10, one side edge of each connecting steel bar assembly 2 is arranged in the cast-in-situ layer 1, and two ends of each connecting steel bar assembly 2 are respectively connected with prefabricated horizontal steel bars 1003 of the adjacent prefabricated cavity wall 10; the close-fitting joint 3 is connected between the outer leaves 1002 of the adjacent prefabricated cavity walls 10.

The two adjacent prefabricated cavity walls 10 are oppositely arranged, that is, the inner leaves 1001 of the two adjacent prefabricated cavity walls 10 are arranged on the same side, and the outer leaves 1002 of the two adjacent prefabricated cavity walls 10 are arranged on the same side. Because the wall body is used in the water service field, the water facing side is the side with the greatest stress, and the two adjacent inner leaves 1001 are connected through the cast-in-situ layer 1, the connection strength of the prefabricated cavity wall splicing structure can be ensured, the wall body is allowed to bear larger load, and meanwhile, the thickness of the protective layer of the reinforcing steel bars arranged on the inner leaves 1001 side is easier to ensure. The adjacent outer blades 1002 are connected through the close joint 3, so that the outer blades 1002 can be tightly connected, the soil retaining side is used, the width of an operating surface of a foundation pit can be reduced, and the earthwork of excavation of the foundation pit is further reduced. By arranging the steel bar connecting component between the cast-in-situ layer 1 and the close joint 3 and connecting the steel bar connecting component with the prefabricated horizontal steel bars 1003 of the prefabricated cavity wall 10, one side, close to the inner leaf 1001, of the steel bar connecting component is arranged in the cast-in-situ layer 1, so that the connection strength and reliability of the splicing structure between the adjacent prefabricated cavity walls 10 can be ensured, the engineering quality is improved, and the engineering quality defects are reduced.

In one embodiment, the length of the inner leaf 1001 of the prefabricated cavity wall 10 is less than the length of the outer leaf 1002 of the prefabricated cavity wall 10; the prefabricated horizontal steel bars 1003 of the prefabricated cavity wall 10 are of a closed hoop structure, the prefabricated horizontal steel bars 1003 are provided with splicing sections exposing the inner leaf 1001, and the connecting steel bar assemblies 2 are connected with splicing sections of the prefabricated horizontal steel bars 1003 of two adjacent prefabricated cavity walls 10.

The length of the inner leaf 1001 of the prefabricated cavity wall 10 is smaller than the length of the outer leaf 1002 of the prefabricated cavity wall 10, namely, the outer leaf 1002 of the prefabricated cavity wall 10 is selected for a certain length, so that the arrangement is that the distance between the adjacent outer leaves 1002 is relatively smaller, the width of the close joint 3 is reduced, the distance between the adjacent inner leaves 1001 is relatively larger, the width of the cast-in-situ layer 1 can be increased, and the connection strength of the splicing structure of the adjacent prefabricated cavity wall is improved. Specifically, referring to fig. 1, the pitch of adjacent inner blades 1001, i.e. the width of the cast-in-situ layer 1 is a, the pitch of adjacent outer blades 1002, i.e. the width of the close splice 3 is B, and the length of the outer blades 1002 selected is C. Wherein, the width B value of the close joint 3 is 20-50 mm, and the connection between adjacent outer blades 1002 is realized by dry and hard cement mortar caulking in the later stage. The outer leaf 1002 picks up a length C value that is determined based on the length of the stressed rebar anchorage, optionally, in the range of 0.6Lae to 0.8 Lae. The width A value of the cast-in-situ layer 1 is also determined according to the anchoring length of the stressed steel bars, the value A=2C+B is determined, and the value C is determined to determine the value A.

The prefabricated horizontal steel bar 1003 arranged in the prefabricated cavity wall 10 extends to the splicing section of the prefabricated cavity wall 10, specifically, the prefabricated horizontal steel bar 1003 comprises a first long side arranged in the inner blade 1001 and a second long side arranged in the outer blade 1002, the first long side of the prefabricated horizontal steel bar 1003 extends out of the inner blade 1001, the second long side of the prefabricated horizontal steel bar 1003 is arranged in the outer blade 1002, and the front end of the prefabricated horizontal steel bar does not extend out, so that the extending part of the first long side and the wide side connecting the first long side and the second long side form the splicing section of the prefabricated horizontal steel bar 1003. The splicing sections of the prefabricated horizontal steel bars 1003 of the two adjacent prefabricated cavity walls 10 are close to but have gaps, and the connecting steel bar assembly 2 is connected with the splicing sections of the two adjacent prefabricated horizontal steel bars 1003, so that the connecting length between the connecting steel bar assembly 2 and the two adjacent prefabricated horizontal steel bars 1003 can be increased, the strength of the splicing structure of the prefabricated cavity walls is improved, and the quality defect is further reduced.

In one embodiment, the connecting bar assembly 2 includes a horizontal first connecting bar 201, the horizontal first connecting bar 201 being a closed loop structure, the horizontal first connecting bar 201 being horizontally overlapped with the spliced section of two adjacent prefabricated horizontal bars 1003.

The horizontal first connecting steel bar 201 is of a closed annular structure, so that the structural strength of the horizontal first connecting steel bar 201 can be improved, and the horizontal first connecting steel bar 201 is connected with the prefabricated horizontal steel bar 1003 of the holding ring, so that the connection strength of the splicing structure is further improved.

In one embodiment, the prefabricated horizontal reinforcement bar 1003 includes a first long side provided in the inner leaf 1001 and a second long side provided in the outer leaf 1002, the horizontal first connection reinforcement bar 201 includes a first connection side parallel to the first long side and a second connection side parallel to the second long side, the first connection side and the first long side overlap in the height direction and are provided in the cast-in-place layer 1, the second connection side is provided near the second long side, and a gap between the second connection side and the second long side is not more than four times a diameter of the prefabricated horizontal reinforcement bar 1003.

Referring to fig. 2, the first connecting edge and the first long edge overlap in the height direction and are arranged in the cast-in-situ layer 1, specifically, overlap is that the upper layer and the lower layer are put on rest, and the first connecting edge and the first long edge are arranged in the cast-in-situ layer 1 together, so that the connection strength of the splicing structure of the adjacent prefabricated cavity walls 10 is further improved. The second connecting edge is close to the second long edge, and the gap between the second connecting edge and the second long edge is not more than four times of the diameter of the prefabricated horizontal steel bar 1003, so that the size of the horizontal first connecting steel bar 201 can be increased as much as possible, and the structural strength of the horizontal first connecting steel bar 201 is improved.

In one embodiment, the outer leaf 1002 and the inner leaf 1001 are provided with a plurality of prefabricated vertical steel bars 1004 arranged at intervals, the prefabricated vertical steel bars 1004 are connected with prefabricated horizontal steel bars 1003, the prefabricated vertical steel bars 1004 are arranged on one side far away from the cavity, and the prefabricated horizontal steel bars 1003 are arranged on one side close to the cavity.

The arrangement rule of the steel bars of the prefabricated cavity wall 10 is satisfied, and the structural strength of the prefabricated cavity wall 10 and the connection strength of the splicing structures of the adjacent cavity walls are improved.

In one embodiment, prefabricated tie bars 1005 are arranged in the prefabricated cavity wall 10, hooks are arranged at two ends of the prefabricated tie bars 1005, and hook the prefabricated vertical steel bars 1004 in the inner leaf 1001 and the outer leaf 1002 and are fixedly connected; when the width of the cast-in-situ layer 1 is smaller than the anchoring length of the horizontal first connecting steel bars 201, the connecting steel bar assembly 2 further comprises a horizontal second connecting steel bar 202, the horizontal second connecting steel bars 202 and the second connecting edges of the horizontal first connecting steel bars 201 are overlapped in the height direction, and two ends of the horizontal second connecting steel bars 202 extend into the cavities of the two prefabricated cavity walls 10 respectively and are connected with the prefabricated tie bars 1005.

Referring to fig. 4 and 8, prefabricated tie bars 1005 are provided in the prefabricated cavity wall 10, hooks are provided at both ends of the prefabricated tie bars 1005, and the hooks hook the prefabricated vertical steel bars 1004 in the inner and outer leaves 1001 and 1002 and are fixedly connected. At intervals of the anchoring length of the horizontal first connecting bar 201, the horizontal second connecting bar 202 is added, so that the connecting bar assembly 2 can meet the splicing and anchoring of the two prefabricated cavity walls 10.

In one embodiment, referring to fig. 7, the bottom of the prefabricated cavity wall 10 is adapted to be connected to the cast-in-place guide wall 20, a water stop steel plate 30 is provided on the cast-in-place guide wall 20, the upper end surface of the cast-in-place guide wall 20 appears at the upper part of the water stop steel plate 30, the spliced section of the prefabricated horizontal steel bar 1003 is broken and forms bending parts bending towards the inner leaf 1001 and the outer leaf 1002 respectively, and the water stop steel plate 30 is arranged between the two bending parts.

Specifically, the cast-in-situ guide wall 20 with a certain height is cast before the prefabricated wall body is installed, the water stop steel plate 30 is buried at the top of the cast-in-situ guide wall 20 in advance, and when the prefabricated hollow wall 10 is hoisted to fall, the splicing section of the prefabricated horizontal steel bar 1003 is broken, so that interference between the prefabricated horizontal steel bar 1003 and the water stop steel plate 30 can be avoided, and the water stop steel plate 30 is arranged between two hooks of the prefabricated horizontal steel bar 1003, as shown in fig. 3.

The water stop steel plate 30 has two setting modes according to water conditions, and for sewage, the water stop steel plate 30 is placed in the direction shown in fig. 7 to prevent the sewage from penetrating from the water facing surface 10011 to the soil facing surface 10021; for clean water, the wall is buried under the ground, and the water stop steel plate 30 is reversely placed to prevent the groundwater from penetrating into the clean water. No matter the setting direction of the water stop steel plate 30, the splicing section of the prefabricated horizontal steel bar 1003 breaks to form a hook, so that the interference problem with the water stop steel plate 30 can be avoided.

Specifically, after the splicing section of one prefabricated horizontal steel bar 1003 is broken, two hooks are formed, and the hooks are respectively bent towards the inner blade 1001 and the outer blade 1002. Optionally, the angle of bending is 130 °.

The prefabricated cavity wall 10 is provided with a plurality of prefabricated horizontal steel bars 1003 along the height direction at intervals, only the prefabricated horizontal steel bars 1003 at the bottom break to form bending for avoiding interference with the water stop steel plate 30, and the prefabricated horizontal steel bars 1003 at the rest heights are also in a ring structure.

In one embodiment, the horizontal first connecting steel bar 201 includes two connecting sections, the connecting sections include a body and bending parts located at two ends of the body, the bending parts of the two connecting sections are arranged in opposite directions, in the same horizontal plane, the water stop steel plate 30 is arranged between the four bending parts, and the four bending parts are welded with the water stop steel plate 30, so that the horizontal first connecting steel bar 201 forms a closed rectangular structure.

Specifically, referring to fig. 3 and 5, the horizontal first connecting bar 201 includes a stirrup, the stirrup at the bottom is an open stirrup, that is, the stirrup is broken from the middle to form two connecting sections, so that interference between the horizontal first connecting bar 201 and the water-stop steel plate 30 can be avoided, and after the two connecting sections are welded with the water-stop steel plate 30, in fig. 3, the two connecting sections at both sides of the welding point 205 are welded with the water-stop steel plate 30 respectively. The two connecting sections still form a closed rectangular structure, so that the arrangement can solve the interference problem of the horizontal first connecting steel bars 201 and the water stop steel plates 30 at the bottom and ensure the connecting strength of the horizontal first connecting steel bars 201.

The prefabricated cavity wall 10 is provided with a plurality of prefabricated horizontal steel bars 1003 at intervals along the height direction thereof, and likewise, the prefabricated cavity wall splicing structure is provided with a plurality of horizontal first connecting steel bars 201 at intervals along the height direction thereof, only the horizontal first connecting steel bars 201 at the bottom are welded with the water-stop steel plates 30 after being broken to avoid interference with the water-stop steel plates 30, and the horizontal first connecting steel bars 201 at the rest of the heights are closed-loop structures, such as closed stirrups, as shown in fig. 2.

In one embodiment, the steel bar connection assembly further includes a plurality of horizontal tie bars 204 horizontally spaced along the length direction of the prefabricated cavity wall 10, two ends of the horizontal tie bars 204 are hooked, two ends of the horizontal tie bars 204 respectively hook the prefabricated vertical steel bars 1004 in the inner leaf 1001 and the outer leaf 1002, and the horizontal tie bars 204 overlap the horizontal first connection steel bars 201.

By the arrangement, the horizontal tie bars 204, the horizontal first connecting steel bars 201 and the prefabricated horizontal steel bars 1003 are connected into a whole, deformation of the steel reinforcement framework is effectively restrained, and rigidity and stability of the steel reinforcement framework are improved. Specifically, the horizontal tie bar 204 and the horizontal first connecting bar 201 are fixedly connected by binding.

In one embodiment, the horizontal tie 204 at the bottom of the prefabricated cavity wall 10 includes a first section and a second section disposed at a horizontal interval, and the water stop steel plate 30 is disposed between the first section and the second section and welded to the first section and the second section, respectively.

Specifically, referring to fig. 5, the middle part of the horizontal tie 204 is broken to form an opening for avoiding the water stop steel plate 30, and then is welded with the water stop steel plate 30 to form a whole. The arrangement can solve the problem of interference between the horizontal lacing wire 204 and the water stop steel plate 30, and ensure the connection effect of the horizontal lacing wire 204. In one embodiment, in the height direction, referring to fig. 8, the horizontal tie 204 is located between the prefabricated horizontal reinforcement 1003 and the horizontal first connection reinforcement 201, and the three are sequentially overlapped and fixed.

In one embodiment, the connecting bar assembly 2 further includes a plurality of vertical first connecting bars 203 disposed at the side of the inner leaf 1001, and the plurality of vertical first connecting bars 203 are spaced apart inside the horizontal first connecting bars 201.

This arrangement makes it possible to increase the anchoring of the cast-in-situ layer 1 in the vertical, i.e. height direction. Specifically, the diameter of the vertical first connection bar 203 provided on the inner blade 1001 side is the same as the prefabricated vertical bar 1004 in the inner blade 1001. The vertical first connecting bar 203 and the prefabricated vertical bar 1004 embedded in the foundation are mechanically connected by a first-stage sleeve 4.

In one embodiment, the outer leaf 1002 is disposed on the soil facing side and the inner leaf 1001 is disposed on the water facing side; the land facing surface 10021 of the outer leaf 1002 forms an included angle with the horizontal surface that is greater than 90 °; the water facing surface 10011 of the inner vane 1001 is perpendicular to the horizontal plane.

The cross section of the wall body is changed, and the wall body is suitable for water service walls. The wall body of the water service project is higher, the thickness of the root is larger and can reach 1000mm, and the wall body is generally made into a variable cross section, namely a shape with a small upper part and a large lower part from the viewpoint of saving materials. Due to the appearance characteristics of the variable cross section of the wall, the appearance dimensions of the horizontal first connecting steel bars 201 in the high wall range are different, and the slope of the wall changes regularly.

In one embodiment, a vertical second connecting bar 206 is disposed in the gap between the second connecting edge of the horizontal first connecting bar 201 and the second edge of the prefabricated horizontal bar 1003, the lower end of the vertical second connecting bar 206 is connected to the cast-in-place guide wall 20, and the upper end of the vertical second connecting bar 206 extends into the cavity of the prefabricated cavity wall 10 connected to the cast-in-place guide wall 20.

Since the prefabricated vertical rebars 1004 in the prefabricated cavity wall 10 and the prefabricated vertical rebars 1004 in the cast-in-situ guide wall 20 are discontinuous, the vertical second connection rebars 206 are provided in the gap between the second connection edge of the horizontal first connection rebars 201 and the second edge of the prefabricated horizontal rebars 1003, so that the connection strength between the cast-in-situ guide wall 20 and the prefabricated wall body can be improved.

According to an embodiment of the present utility model, in another aspect, there is further provided a water service wall, including a plurality of prefabricated cavity walls 10, and the prefabricated cavity walls 10 adjacent to each other are spliced by adopting the prefabricated cavity wall splicing structure according to any one of the above technical solutions.

Because the water affair wall body includes prefabricated cavity wall mosaic structure, have the same effect with prefabricated cavity wall mosaic structure, and the description is omitted here again.

Although embodiments of the present utility model have been described in connection with the accompanying drawings, various modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the utility model, and such modifications and variations fall within the scope of the utility model as defined by the appended claims.

Claims (14)

1. The utility model provides a prefabricated cavity wall mosaic structure for connect adjacent prefabricated cavity wall (10) that are a style of calligraphy and arrange, its characterized in that includes from inside to outside sets gradually:

The cast-in-situ layer (1) is connected between the inner leaves (1001) of the adjacent prefabricated cavity walls (10);

The connecting steel bar assemblies (2) are arranged at intervals along the height direction of the prefabricated cavity wall (10), the connecting steel bar assemblies (2) are arranged between an inner blade plate (1001) and an outer blade plate (1002) of the prefabricated cavity wall (10), one side edge of each connecting steel bar assembly (2) is arranged in the cast-in-situ layer (1), and two ends of each connecting steel bar assembly (2) are respectively connected with the prefabricated horizontal steel bars (1003) of the adjacent prefabricated cavity wall (10);

And the close joint (3) is connected between the outer blades (1002) of the adjacent prefabricated cavity walls (10).

2. The prefabricated cavity wall splicing structure according to claim 1, wherein the length of the inner leaf (1001) of the prefabricated cavity wall (10) is smaller than the length of the outer leaf (1002) of the prefabricated cavity wall (10); the prefabricated horizontal steel bars (1003) of the prefabricated cavity wall (10) are of a closed embracing ring structure, the prefabricated horizontal steel bars (1003) are provided with splicing sections exposing the inner leaf plates (1001), and the connecting steel bar assemblies (2) are connected with the splicing sections of the prefabricated horizontal steel bars (1003) of two adjacent prefabricated cavity walls (10).

3. The prefabricated cavity wall splicing structure according to claim 2, wherein the connecting bar assembly (2) comprises a horizontal first connecting bar (201), the horizontal first connecting bar (201) is of a closed annular structure, and the horizontal first connecting bar (201) is horizontally overlapped with the splicing sections of two adjacent prefabricated horizontal bars (1003).

4. A prefabricated cavity wall splicing structure according to claim 3, characterized in that the prefabricated horizontal reinforcement bar (1003) comprises a first long side arranged in the inner leaf (1001) and a second long side arranged in the outer leaf (1002), the horizontal first connection reinforcement bar (201) comprises a first connection side parallel to the first long side and a second connection side parallel to the second long side, the first connection side and the first long side overlap in the height direction and are arranged in the cast-in-place layer (1), the second connection side is arranged close to the second long side, and the gap between the second connection side and the second long side is not more than four times the diameter of the prefabricated horizontal reinforcement bar (1003).

5. The prefabricated cavity wall splicing structure according to claim 4, wherein a plurality of prefabricated vertical steel bars (1004) are arranged in the outer blade plate (1002) and the inner blade plate (1001) at intervals, the prefabricated vertical steel bars (1004) are connected with the prefabricated horizontal steel bars (1003), the prefabricated vertical steel bars (1004) are arranged on one side far away from the cavity, and the prefabricated horizontal steel bars (1003) are arranged on one side close to the cavity.

6. The prefabricated cavity wall splicing structure according to claim 5, wherein prefabricated tie bars (1005) are arranged in the prefabricated cavity wall (10), hooks are arranged at two ends of the prefabricated tie bars (1005), and the hooks hook the prefabricated vertical steel bars (1004) in the inner leaf plate (1001) and the outer leaf plate (1002) and are fixedly connected; when the width of the cast-in-situ layer (1) is smaller than the anchoring length of the horizontal first connecting steel bars (201), the connecting steel bar assembly (2) further comprises horizontal second connecting steel bars (202), the horizontal second connecting steel bars (202) and the second connecting edges of the horizontal first connecting steel bars (201) are overlapped in the height direction, and two ends of the horizontal second connecting steel bars (202) extend into the cavities of the two prefabricated cavity walls (10) respectively and are connected with the prefabricated tie bars (1005).

7. The prefabricated cavity wall splicing structure according to claim 5 or 6, wherein the bottom of the prefabricated cavity wall (10) is suitable for being connected to a cast-in-situ guide wall (20), a water stop steel plate (30) is arranged on the cast-in-situ guide wall (20), the upper portion of the water stop steel plate (30) is higher than the upper end face of the cast-in-situ guide wall (20), the splicing sections of the prefabricated horizontal steel bars (1003) are broken and respectively form bending parts which are bent towards the inner leaf plate (1001) and the outer leaf plate (1002), and the water stop steel plate (30) is arranged between the two bending parts.

8. The prefabricated cavity wall splicing structure according to claim 7, wherein the horizontal first connecting steel bar (201) comprises two connecting sections, the connecting sections comprise a body and bending parts positioned at two ends of the body, the bending parts of the two connecting sections are arranged in opposite directions, the water-stopping steel plate (30) is arranged between the four bending parts in the same horizontal plane, and the four bending parts are welded with the water-stopping steel plate (30), so that the horizontal first connecting steel bar (201) forms a closed rectangular structure.

9. The prefabricated cavity wall splicing structure according to claim 7, wherein the steel bar connecting assembly further comprises a plurality of horizontal tie bars (204) horizontally arranged at intervals along the length direction of the prefabricated cavity wall (10), two ends of the horizontal tie bars (204) are hooked, two ends of the horizontal tie bars (204) respectively hook the prefabricated vertical steel bars (1004) in the inner leaf plate (1001) and the outer leaf plate (1002), and the horizontal tie bars (204) are overlapped with the horizontal first connecting steel bars (201).

10. The prefabricated cavity wall splicing structure according to claim 9, wherein the horizontal tie bar (204) located at the bottom of the prefabricated cavity wall (10) includes a first section and a second section horizontally spaced apart from each other, and the water stop steel plate (30) is disposed between the first section and the second section and welded to the first section and the second section, respectively.

11. The prefabricated cavity wall splicing structure according to any one of claims 3 to 6, wherein the connecting reinforcement assembly (2) further comprises a plurality of vertical first connecting reinforcements (203) provided on the inner leaf (1001) side, and a plurality of the vertical first connecting reinforcements (203) are provided at intervals inside the horizontal first connecting reinforcements (201).

12. The prefabricated cavity wall splicing structure according to claim 7, wherein a vertical second connecting steel bar (206) is arranged in a gap between a second connecting edge of the horizontal first connecting steel bar (201) and a second edge of the prefabricated horizontal steel bar (1003), the lower end of the vertical second connecting steel bar (206) is connected with the cast-in-situ guide wall (20), and the upper end of the vertical second connecting steel bar (206) extends into a cavity of the prefabricated cavity wall (10) connected with the cast-in-situ guide wall (20).

13. The prefabricated cavity wall splicing structure according to any one of claims 1 to 6, wherein said outer leaf (1002) is provided on a soil facing side, and said inner leaf (1001) is provided on a water facing side; the soil facing surface (10021) of the outer blade plate (1002) forms an included angle with the horizontal surface, and the included angle is larger than 90 degrees; the water surface (10011) of the inner blade (1001) is perpendicular to the horizontal plane.

14. A water service wall body, characterized by comprising a plurality of prefabricated cavity walls (10), wherein adjacent prefabricated cavity walls (10) are spliced by adopting the prefabricated cavity wall splicing structure as claimed in any one of claims 1 to 13.