CN114645552B

CN114645552B - Basement post-pouring concrete band structure

Info

Publication number: CN114645552B
Application number: CN202110534047.6A
Authority: CN
Inventors: 祁林明; 程唱唱; 刘斌; 杨玉兵; 陆建林
Original assignee: Suzhou China Construction Group Co ltd
Current assignee: Suzhou China Construction Group Co ltd
Priority date: 2021-05-17
Filing date: 2021-05-17
Publication date: 2024-07-30
Anticipated expiration: 2041-05-17
Also published as: CN114645552A

Abstract

The application relates to the field of building construction, in particular to a basement post-pouring concrete strip structure which comprises a post-pouring strip and basement bottom plates positioned on two sides of the post-pouring strip, wherein a steel skeleton parallel to the length direction of the post-pouring strip is integrally formed in the post-pouring strip, four side plates which are parallel to the steel skeleton and vertically arranged are arranged on the steel skeleton, two side plates correspond to one basement bottom plate and are clung to the basement bottom plate, and a space is reserved between the two side plates corresponding to the same basement bottom plate. The application has the advantage of reducing the possibility of crushing the basement bottom plate and the post-cast strip due to excessive compressive stress.

Description

Basement post-pouring concrete band structure

Technical Field

The application relates to the field of building construction, in particular to a basement post-pouring concrete strip structure.

Background

The post-cast strip is a continuous integral structure which is formed by pouring concrete after a period of time and is used for preventing temporary deformation joints which remain in the construction period due to harmful cracks caused by uneven self shrinkage or uneven settlement in a cast-in-situ reinforced concrete structure, playing the roles of digestion, settlement, shrinkage and deformation.

The Chinese patent with the bulletin number of CN206090639U discloses a basement bottom plate post-pouring strip structure, which comprises basement bottom plates, wherein a bottom plate post-pouring strip is poured between the basement bottom plates, the bottom plate post-pouring strip is an expanded concrete post-pouring strip, and a reinforced concrete layer is arranged below the bottom plate post-pouring strip.

In view of the above-mentioned related art, the inventor considers that the expansion concrete is constrained by the bottom plate to generate compressive stress, and after counteracting the tensile stress generated by the self shrinkage, part of the compressive stress still acts on the basement bottom plate, and when the compressive stress intensity of the part is large, the basement bottom plate and the bottom plate post-cast strip may be broken.

Disclosure of Invention

In order to reduce the compressive stress of the expanded concrete on the basement bottom plate, the application provides a basement post-pouring concrete strip structure.

The application provides a basement post-pouring concrete strip structure which adopts the following technical scheme:

the utility model provides a basement post-cast concrete area structure, includes post-cast strip and is located the basement bottom plate of its both sides, integrated into one piece has the steel skeleton that is on a parallel with its length direction in the post-cast strip, be equipped with four rather than parallel and vertical setting's curb plate on the steel skeleton, two curb plates correspond a basement bottom plate and hug closely with it, have the interval between two curb plates that correspond same basement bottom plate.

Through adopting above-mentioned technical scheme, the curb plate is made by high strength structural steel, is difficult to take place deformation, and the curb plate is used for reducing the direct contact area of post-cast strip and basement bottom plate to play the restraint effect to pouring the post-cast strip between two basement bottom plates, with this compressive stress that is favorable to reducing the post-cast strip and acts on the basement bottom plate, be favorable to reducing basement bottom plate and post-cast ground and break because of the possibility of atress too big.

Optionally, a groove is formed on one side of the basement bottom plate opposite to the post-pouring strip along the length direction of the post-pouring strip, the groove is located between two corresponding side plates of the basement bottom plate, and a raised strip poured in the groove is integrally formed on the post-pouring strip.

Through adopting above-mentioned technical scheme, the cooperation of sand grip and recess is favorable to reducing the possibility that the post-cast strip took place to subside to improve the shaping effect between basement bottom plate and the post-cast strip.

Optionally, the steel skeleton includes first anti-pulling plate and connects in the second anti-pulling plate of first anti-pulling plate horizontal both sides respectively, the longitudinal section of first anti-pulling plate and two second anti-pulling plates is "H" shape setting, and two curb plates that correspond same basement bottom plate correspond same second anti-pulling plate, be connected with the floor between curb plate and the second anti-pulling plate that corresponds, a plurality of pouring holes have all been seted up along its length direction on floor, first anti-pulling plate and the second anti-pulling plate.

Through adopting above-mentioned technical scheme, first anti arm-tie, second anti arm-tie, floor are made by high strength structural steel, are difficult for taking place deformation, consequently can play the constraint effect to the inflation of post-cast strip. The steel skeleton divides the post-cast strip into a plurality of areas, so that the expansion of the expansion concrete is restrained by the subareas, the restraint effect of the steel skeleton on the post-cast strip is further improved, and the compression stress of the post-cast strip on the basement bottom plate is reduced.

Optionally, be located two curb plates of first anti-pulling plate top, be connected with anti-pulling rod respectively between two curb plates of first anti-pulling plate below, the tensile pole perpendicular to first anti-pulling plate, the tensile pole is connected with a plurality of along the length direction of first anti-pulling plate.

Through adopting above-mentioned technical scheme, the tensile pole is made by high strength structural steel equally, through tensile and the jack-up effect of tensile pole to the curb plate, has further improved the anti deformation performance of curb plate, is favorable to improving the restriction effect of steel skeleton to post-cast strip.

Optionally, the rib plate is horizontally arranged.

By adopting the technical scheme, the expansion concrete can smoothly fill the area enclosed by the second anti-pulling plate, the corresponding two rib plates and the basement bottom plate, so that a cavity is avoided.

Optionally, the tensile pole passes the second anti-pulling plate, threaded connection has the tight nut that supports that is used for supporting tight second anti-pulling plate on the anti-pulling pole, support tight nut and be located two second tensile plates opposite one side.

Through adopting above-mentioned technical scheme, rotate and support tight nut to make to support tight nut and contradict the lateral wall that two second tensile boards are on the back of each other, support tight nut and play the auxiliary role to the second tensile board, thereby improve the restraint effect of second anti-pulling board to the expansion concrete between two second tensile boards.

Optionally, the lower surface of first anti arm-tie is connected with the support column of vertical setting, the support column is provided with a plurality ofly along the length direction of first anti arm-tie, the length of support column equals the half of post-cast strip height.

Through adopting above-mentioned technical scheme, the support column is located the steel skeleton and is located the position realization location of post-cast strip, and the steel skeleton is located the center of post-cast strip upper and lower height to this is favorable to improving the holistic restraint effect of steel skeleton to the post-cast strip.

Optionally, the bottom end of the support column is pointed cone.

By adopting the technical scheme, the pointed cone is arranged to be favorable for reducing the possibility that the accurate positioning of the steel skeleton is hindered by a layer of pre-poured expanded concrete.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the side plates are made of high-strength structural steel and are not easy to deform, and the side plates are used for reducing the direct contact area of the post-cast strip and the basement bottom plates, so that the post-cast strip poured between the two basement bottom plates is restrained, the compression stress of the post-cast strip on the basement bottom plates is reduced, and the possibility of breakage of the basement bottom plates and the post-cast land due to overlarge stress is reduced;

2. The abutting nuts are rotated, so that the abutting nuts abut against the side walls of the two second tensile plates, the abutting nuts play an auxiliary role on the second tensile plates, and the constraint effect of the second tensile plates on the expansion concrete between the two second tensile plates is improved.

Drawings

FIG. 1 is a schematic diagram of a structure for embodying the present application;

fig. 2 is a schematic structural view of a connection relationship among a first tension plate, a second tension plate, a side plate, and a tension rod, which is used for embodying the present application.

Reference numerals illustrate: 1. post-cast strip; 2. a basement floor; 21. a groove; 3. a reinforced concrete layer; 4. a convex strip; 51. a side plate; 52. a first tensile plate; 53. a second tensile plate; 54. rib plates; 6. pouring holes; 7. a pull-resistant rod; 8. tightly supporting the nut; 9. and (5) supporting the column.

Detailed Description

The application is described in further detail below with reference to fig. 1-2.

The embodiment of the application discloses a basement post-pouring concrete strip structure. Referring to fig. 1, the basement post-cast concrete strip structure comprises a post-cast strip 1, basement bottom plates 2 positioned on two sides of the post-cast strip 1, and a steel skeleton integrally formed in the post-cast strip 1, wherein a reinforced concrete layer 3 is arranged below the post-cast strip 1, and the post-cast strip 1 is made of expanded concrete.

Referring to fig. 1 and 2, the steel skeleton is parallel to the length direction of the post-cast strip 1, and includes a first tensile plate 52 and second tensile plates 53 fixedly connected to both horizontal sides of the first tensile plate 52, respectively, and longitudinal sections of the first tensile plate 52 and the second tensile plates 53 are H-shaped and parallel to each other.

Referring to fig. 2, two rib plates 54 are fixedly connected to a side of each second tensile plate 53 facing away from the first tensile plate 52, and two rib plates 54 in the same group are located above the first tensile plate 52, and the other is located below the first tensile plate 52.

Referring to fig. 2, a side plate 51 vertically disposed is fixedly connected to a side of each rib 54 remote from the second tensile plate 53, and the rib 54 and the side plate 51 are parallel to the second tensile plate 53. The two side plates 51 corresponding to the same second tensile plate 53 correspond to the same basement bottom plate 2, the side plates 51 are closely attached to the corresponding basement bottom plates 2, and a space is reserved between the two side plates 51 corresponding to the same basement bottom plate 2.

Referring to fig. 1, in construction, an operator firstly pours a layer of expansion concrete into a cavity surrounded by a reinforced concrete layer 3 and two basement bottom plates 2, then puts the whole steel skeleton into the cavity, and then continues pouring the expansion concrete.

Referring to fig. 2, the rib plate 54, the first tensile plate 52 and the second tensile plate 53 are provided with a plurality of pouring holes 6 along the length direction thereof, and after the steel skeleton is placed in the cavity, constructors can smoothly pour the expanded concrete into the cavity through the pouring holes 6.

Referring to fig. 2, the rib plates 54 are horizontally arranged, so that the expanded concrete can smoothly fill the area enclosed between the second tension plate 53, the corresponding two rib plates 54 and the basement bottom plate 2, so as to avoid the existence of a cavity.

Referring to fig. 1 and 2, the first tensile plate 52, the second tensile plate 53, the rib plates 54, and the side plates 51 are all made of high-strength structural steel, and are welded to form a steel skeleton, so that the whole post-cast strip 1 can be divided into a plurality of areas after the steel skeleton is integrally cast in the post-cast strip 1.

Referring to fig. 1, since the high-strength structural steel has high strength and hardness and is not easily deformed, it is possible to restrain expansion of the expanded concrete, thereby reducing compressive stress of the post-cast strip 1 acting on the basement bottom plate 2.

Referring to fig. 1 and 2, the side plates 51 are used for reducing the direct contact area between the expansion concrete and the basement bottom plate 2, and by restraining the expansion concrete by the side plates 51, only a small amount of compressive stress acts on the basement bottom plate 2 after the tensile stress generated by the self drying shrinkage of the expansion concrete counteracts the compressive stress of the part, so that the possibility of crushing the basement bottom plate 2 and the post-cast strip 1 caused by overlarge compressive stress of the expansion concrete on the basement bottom plate 2 is reduced.

Referring to fig. 2, tension rods 7 are fixedly connected between two side plates 51 located above the first tension plate 52 and two side plates 51 located below the first tension plate 52 respectively, the tension rods 7 are perpendicular to the first tension plate 52, and the tension rods 7 are uniformly provided with a plurality of tension rods along the length direction of the first tension plate 52.

Referring to fig. 2, the tension rod 7 is made of high-strength structural steel, and is not easily deformed, so that the two side plates 51 are restrained, and the possibility that the side plates 51 are deformed by the compressive stress of the expanded concrete is reduced.

Referring to fig. 2, the tension rod 7 passes through the second tension plates 53, the tension rod 7 is screwed with a tightening nut 8 for tightening the second tension plates 53, and the tightening nut 8 is located at the opposite side of the two second tension plates 53.

Referring to fig. 2, the constructor rotates the tightening nut 8 such that the tightening nut 8 tightens the side of the second tensile plate 53 facing away from the first tensile plate 52, thereby assisting the second tensile plate 53 to restrain the expanded concrete between the two second tensile plates 53.

Referring to fig. 1 and 2, the lower surface of the first tensile plate 52 is fixedly connected with vertically arranged support columns 9, the support columns 9 are provided in plurality along the length direction of the first tensile plate 52, and the length of the support columns 9 is equal to half of the height of the post-cast strip 1.

Referring to fig. 1 and 2, the steel skeleton is positioned in the post-cast strip 1 through the support columns 9, and the steel skeleton is positioned in the center of the upper and lower heights of the post-cast strip 1, so that the restraint effect of the steel skeleton on the whole post-cast strip 1 is improved.

Referring to fig. 1 and 2, before placing the steel skeleton, a layer of expansion concrete is poured between the two basement bottom plates 2, so that the bottom ends of the support columns 9 are arranged in a pointed cone shape, and the expansion concrete poured first is not easy to block the accurate positioning of the steel skeleton.

Referring to fig. 1 and 2, a recess 21 is formed in one side of the basement bottom plate 2 opposite to the post-cast strip 1 along the length direction thereof, the recess 21 is located between two side plates 51 corresponding to the basement bottom plate 2, and the post-cast strip 1 is integrally formed with a protruding strip 4 poured into the recess 21.

Referring to fig. 1 and 2, the settlement of the post-cast strip 1 is restrained by the cooperation of the grooves 21 and the convex strips 4, thereby improving the overall molding effect of the post-cast strip 1 and the basement bottom plate 2.

The implementation principle of the basement post-pouring concrete strip structure provided by the embodiment of the application is as follows: in the process of pouring the post-cast strip 1, a steel skeleton is placed between the two basement bottom plates 2, and the steel skeleton is made of high-strength structural steel, has higher strength and hardness and is not easy to deform, so that the post-cast strip 1 is restrained through the steel skeleton, the area of the post-cast strip 1 in direct contact with the basement bottom plates 2 is reduced, the compressive stress of the post-cast strip 1 on the basement bottom plates 2 is reduced, and the possibility of breakage caused by overlarge stress of the basement bottom plates 2 and the post-cast strip 1 is reduced.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims

1. The utility model provides a basement post-cast concrete area structure, includes post-cast area (1) and is located basement bottom plate (2) of its both sides, its characterized in that: the post-pouring strip (1) is internally and integrally formed with a steel skeleton parallel to the length direction of the post-pouring strip, four side plates (51) parallel to the post-pouring strip and vertically arranged are arranged on the steel skeleton, the two side plates (51) correspond to one basement bottom plate (2) and are closely attached to the basement bottom plate, and a space is reserved between the two side plates (51) corresponding to the same basement bottom plate (2);

The steel skeleton comprises a first anti-pulling plate (52) and second anti-pulling plates (53) which are respectively connected to two horizontal sides of the first anti-pulling plate (52), longitudinal sections of the first anti-pulling plate (52) and the two second anti-pulling plates (53) are in H-shaped arrangement, two side plates (51) corresponding to the same basement bottom plate (2) correspond to the same second anti-pulling plate (53), rib plates (54) are connected between the side plates (51) and the corresponding second anti-pulling plates (53), and a plurality of pouring holes (6) are formed in the rib plates (54), the first anti-pulling plates (52) and the second anti-pulling plates (53) along the length direction of the rib plates;

A groove (21) is formed in one side, opposite to the post-pouring belt (1), of the basement bottom plate (2) along the length direction of the post-pouring belt, the groove (21) is positioned between two corresponding side plates (51) of the basement bottom plate (2), and a raised strip (4) poured in the groove (21) is integrally formed on the post-pouring belt (1);

Two side plates (51) positioned above the first anti-pulling plate (52), and a plurality of tensile rods (7) are respectively connected between the two side plates (51) positioned below the first anti-pulling plate (52), wherein the tensile rods (7) are perpendicular to the first anti-pulling plate (52), and the tensile rods (7) are connected with a plurality of tensile rods along the length direction of the first anti-pulling plate (52);

The tensile rod (7) passes through the second anti-pulling plates (53), the tensile rod (7) is in threaded connection with a propping nut (8) for propping the second anti-pulling plates (53), and the propping nut (8) is positioned on one side of the two second anti-pulling plates (53) opposite to each other;

the lower surface of first anti-pulling plate (52) is connected with support column (9) of vertical setting, support column (9) are provided with a plurality ofly along the length direction of first anti-pulling plate (52), the length of support column (9) equals the half of post-cast strip (1) height.

2. The basement post-cast concrete strip structure of claim 1, wherein: the rib plates (54) are horizontally arranged.

3. The basement post-cast concrete strip structure of claim 1, wherein: the bottom end of the supporting column (9) is in a pointed cone shape.