CN210421515U - Tolerance-allowable profile steel connecting structure for assembled shear wall - Google Patents
Tolerance-allowable profile steel connecting structure for assembled shear wall Download PDFInfo
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- CN210421515U CN210421515U CN201921186480.XU CN201921186480U CN210421515U CN 210421515 U CN210421515 U CN 210421515U CN 201921186480 U CN201921186480 U CN 201921186480U CN 210421515 U CN210421515 U CN 210421515U
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Abstract
The utility model discloses a tolerance-tolerance section steel connecting structure for an assembled shear wall, which comprises a first section steel connector and a second section steel connector which are connected, wherein the first section steel connector and the second section steel connector are respectively embedded in two adjacent shear wall bodies; the connection parts of the first section steel connector and the second section steel connector are respectively provided with a 'straight' bolt hole, and the 'straight' bolt hole on the first section steel connector and the 'straight' bolt hole on the second section steel connector are crossed to form a 'cross' adjustable connecting hole. Although the structural principle of the tolerance-allowable profile steel connecting structure is simple, the tolerance-allowable profile steel connecting structure is not used or disclosed in advance in the shear wall mounting structure, the structure can complete the adjustment and locking fixation of two shear wall bodies in the transverse and longitudinal positions, has very high tolerance capability and great capability of adjusting construction errors, is convenient for the mounting of the shear wall bodies, can greatly reduce the construction difficulty, accelerates the construction speed and improves the building industrialization level.
Description
Technical Field
The utility model relates to an assembled concrete building technical field, in particular to but tolerance shaped steel connection structure for assembled shear force wall.
Background
The fabricated building has the advantages of resource saving, environmental protection, construction period saving and the like. At present, the assembled building is vigorously developed in China, and the shear wall structure has the characteristics of high bearing capacity, good earthquake resistance and the like, so that the shear wall structure is a widely used structural form. From the results of a large number of tests and studies available, it can be found that: the damage of the assembled shear wall is mainly represented by a concrete crushing damage form in a certain range at two ends of the bottom of the wall body, and the vertical connecting position often generates a phenomenon of transverse through seams and even lifting, so that the mode of strong connection and weak component is not consistent with the expected mode. Generally, concrete damage at the position where the section steel is arranged in the shear wall is small, cracks are fine and dense, and therefore the mode is ideal, and the section steel connection is also a convenient connection mode. However, in the commonly used shear wall at present, the steel content of the section is low, the cohesive force between the new and old concrete interfaces is insufficient, the shear capacity of the shear wall connection area is easily insufficient, even large shear slip deformation occurs, and the structure safety is not facilitated. In addition, no matter in the preparation of component or construction installation, the error is inevitable, to accurate round hole bolted connection, too big error will lead to the component can't be connected, brings great degree of difficulty for the construction.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide a but tolerance shaped steel connection structure for assembled shear force wall, this connection structure principle is simple, but the ability of shearing is strong, and is favorable to construction operation and construction error to be adjusted.
The technical scheme of the utility model is that: a tolerance-tolerance section steel connecting structure for an assembled shear wall comprises a first section steel connector and a second section steel connector which are connected, wherein the first section steel connector and the second section steel connector are respectively embedded in two adjacent shear wall bodies; the connection parts of the first section steel connector and the second section steel connector are respectively provided with a 'straight' bolt hole, and the 'straight' bolt hole on the first section steel connector and the 'straight' bolt hole on the second section steel connector are crossed to form a 'cross' adjustable connecting hole.
A plurality of first profile steel connectors or a plurality of second profile steel connectors are installed on the wall body of the shear wall, and a plurality of auxiliary reinforcing steel bars are further arranged between every two adjacent first profile steel connectors or every two adjacent second profile steel connectors. The auxiliary steel bars are arranged, so that the shearing resistance in the connecting area of the two shear wall bodies can be effectively enhanced, and the shearing resistance of each member in the connecting area is ensured.
The auxiliary reinforcing steel bars are also pre-embedded in the shear wall body, the length of the auxiliary reinforcing steel bars extending out of the shear wall body is smaller than the height of the post-pouring area, and the overlapping length between the auxiliary reinforcing steel bars of two adjacent shear wall bodies is 1/3-2/3 of the height of the post-pouring area. Between two adjacent shear force wall bodies, its auxiliary reinforcement one-to-one just carries out fixed connection through the electric welding.
The main body structures of the first profile steel connector and the second profile steel connector are the same and respectively comprise a rectangular steel pipe and a connecting steel plate, the rectangular steel pipe is pre-buried in the shear wall body, the connecting steel plate extends into the rectangular steel pipe and is fixedly connected with the rectangular steel pipe, and a part of the connecting steel plate extending out of the shear wall body is provided with a bolt hole in a shape of a Chinese character 'yi'. Wherein, the connecting steel plate stretches into rectangle steel pipe department, passes through welded fastening between connecting steel plate and the rectangle steel pipe. In the manufacturing process of the first section steel connector and the second section steel connector, the positions of the two corresponding linking steel plates in the corresponding rectangular steel pipes are properly staggered, so that the two linking steel plates are correspondingly overlapped and connected in construction.
The width B of the rectangular steel pipe is equal to hw-2(c + dg + D), wherein the width B is the thickness of the hw shear wall body, c is the thickness of the protective layer, dg is the diameter of the stirrup, and D is the diameter of the stress rib in the hidden column area. The protective layer and the stirrups are common structures of the traditional shear wall.
A hidden column area is arranged in the shear wall body, a plurality of stress ribs are distributed in the hidden column area, and the periphery of the rectangular steel pipe is fixedly connected with the stress ribs. The height of the hidden column area is generally about 1/4 of the height of a shear wall body, and force transmission is guaranteed through the welded fixation of the stress ribs and the outer wall of the rectangular steel pipe in the hidden column area.
Through welded fastening between atress muscle and the rectangle steel pipe, the length of being connected of atress muscle and rectangle steel pipe should be greater than l ═ N/(fh), wherein, N is the yield stress of atress muscle, and f is the intensity of welding seam, and h is the effective height of welding seam (the welding seam is between atress muscle and the rectangle steel pipe, between connecting steel sheet and the rectangle steel pipe welding formation). The cross-sectional area of the connecting steel plate needs to be calculated through force transmission of the stress rib, and then the minimum wall thickness t is obtained. Because the stress is consistent: since the force is equal to the strength × the area, the connecting steel plate should bear a larger force than the reinforcing bar without breaking, and therefore the area should be large.
The two adjacent shear wall bodies are arranged in a vertical connection mode, the height of each shear wall body is the height obtained by subtracting the height of the post-pouring area from the height of a floor, a post-pouring area is formed between the two shear wall bodies, and the first section steel connector and the second section steel connector are fixedly connected in the post-pouring area. The post-cast area is beneficial to adjusting the construction error of the floor structure in height and provides a working space for bolt construction, micro-expanded fine aggregate concrete in the post-cast area is cast, and stirrups with the distance of about 50mm are distributed in the post-cast area to increase the restraint capacity of the area. In addition, the fine aggregate concrete in the post-cast area can effectively protect the first connector, the second connector and the auxiliary reinforcing steel bars from being corroded, the whole body volume of the post-cast area is small, the field wet operation is small, the operation is simple and convenient, and the construction quality is easy to guarantee. In the first section steel connector and the second section steel connector, the length of the connecting steel plate extending out of the shear wall body is generally about 20mm smaller than the height of a post-cast area, so that construction is facilitated.
The first section steel connector and the second section steel connector are respectively provided with a plurality of bolt holes in a shape like a Chinese character 'yi'; each "style of calligraphy" bolt hole on the first shaped steel connector is horizontal setting, and each "style of calligraphy" bolt hole on the second shaped steel connector is vertical setting. The bolt holes in the shape of the straight line on the first profile steel connector and the second profile steel connector are in one-to-one correspondence, the formed adjustable connecting holes can adjust construction errors in the horizontal direction and the longitudinal direction in the plane, the high tolerance capacity is achieved, engineering requirements can be greatly met, and the construction speed can be greatly improved on the basis that the stress is guaranteed through reasonable design. The center distance and the end distance of each straight bolt hole are required to meet the design specification, and the length L, the width B and the radius R of each straight bolt hole are determined according to the diameter of a screw rod of an actually adopted bolt and the tolerance capability required by the specification.
And the first section steel connector and the second section steel connector are fixedly connected at the cross-shaped adjustable connecting hole through a bolt. Wherein, the bolt adopts 8.8 grade high strength bolts.
When the allowance-capable section steel connecting structure for the assembled shear wall is applied, the principle is as follows: the method comprises the steps that a first section steel connector and a second section steel connector are pre-buried at the connection position of two adjacent shear wall bodies respectively, a post-pouring area is formed at the connection position of the first section steel connector and the second section steel connector, a plurality of linear bolt holes are formed in the first section steel connector and the second section steel connector respectively, the linear bolt holes in the first section steel connector and the second section steel connector correspond to each other one by one to form a cross-shaped adjustable connecting hole, the two linear bolt holes are adjusted in relative positions and are connected in a locking mode through bolts, and therefore the two shear wall bodies can be adjusted in transverse and longitudinal positions and locked and fixed, high tolerance capacity is achieved, and installation and construction of the shear wall bodies are facilitated; in addition, in the post-cast area, the two shear wall bodies are respectively pre-embedded with auxiliary steel bars and fixedly connected in a one-to-one correspondence manner, so that the shear resistance of the two shear wall bodies can be effectively improved.
Compared with the prior art, the utility model, following beneficial effect has:
the allowance-adjustable type steel connecting structure for the assembled shear wall is improved on the basis of the traditional shear wall, the cross-shaped adjustable connecting holes are formed in the type steel connectors for connecting the two adjacent shear wall bodies, although the structural principle is simple, the structure is not used or disclosed in the shear wall mounting structure in advance, the adjustable connecting holes can be used for completing the adjustment and locking fixation of the two shear wall bodies at the transverse and longitudinal positions, the allowance-adjustable type steel connecting structure has high allowance capacity and larger capacity of adjusting construction errors, the installation of the shear wall bodies is facilitated, the construction difficulty can be greatly reduced, and the application range of the prefabricated shear wall is expanded.
In the tolerance-adjustable type steel connecting structure for the assembled shear wall, the two adjacent shear wall bodies are internally provided with auxiliary steel bars which are fixedly connected in a one-to-one correspondence manner, and the auxiliary steel bars can effectively enhance the shearing resistance in the connecting area of the two shear wall bodies and ensure the shearing resistance of each member in the connecting area.
In the tolerance-adjustable section steel connecting structure for the fabricated shear wall, a post-cast area is formed at the connecting part of the first section steel connector and the second section steel connector, and micro-expanded fine aggregate concrete is cast in the post-cast area. On one hand, the post-pouring area is beneficial to adjusting the construction error of the floor structure in height, and provides a working space for the construction of bolts on the first section steel connector and the second section steel connector; on the other hand, the fine aggregate concrete in the post-cast area can effectively protect the first connector, the second connector, the auxiliary reinforcing steel bars and other structural members from being corroded, the whole body volume of the post-cast area is small, the field wet operation is small, the operation is simple and convenient, the construction quality is easy to guarantee, and the rapid industrial construction level can be achieved.
Drawings
Fig. 1 is a schematic overall structure diagram of the tolerance-allowable section steel connecting structure for the fabricated shear wall.
Fig. 2 is a schematic structural diagram of the first profile steel connector or the second profile steel connector embedded in the wall body of the shear wall.
Fig. 3 is a schematic structural diagram of a post-cast area formed when two shear wall bodies are connected.
Fig. 4 is a schematic structural view of a bolt hole shaped like a straight line when the bolt hole is transversely arranged.
Fig. 5 is a schematic structural view of a bolt hole in a straight line shape when the bolt hole is longitudinally arranged.
FIG. 6 is a schematic view of a bolt installed at an adjustable connecting hole.
Fig. 7 is a schematic plan view of two shear walls of fig. 1 installed.
In the above figures, the members indicated by the respective reference numerals are as follows: 1 is the shear force wall body, 2 is first shaped steel connector, 3 is second shaped steel connector, and 4 are "style of calligraphy" bolt holes, and 5 are auxiliary reinforcement, and 6 are the rectangle steel pipe, and 7 are the connecting steel plate, 8 are the atress muscle, and 9 are the post-cast region, and 10 are the bolt.
Detailed Description
The present invention will be described in further detail with reference to examples, but the present invention is not limited thereto.
Examples
The tolerance-adjustable steel section connecting structure for the fabricated shear wall is applied to two vertically connected shear walls, and a post-pouring area 9 is formed between the two shear walls as shown in fig. 3.
As shown in fig. 1 or fig. 7, the tolerance-adjustable section steel connecting structure comprises a first section steel connector 2 and a second section steel connector 3 which are connected, and the first section steel connector and the second section steel connector are respectively embedded in two adjacent shear wall bodies 1; the joints of the first section steel connector and the second section steel connector are respectively provided with a linear bolt hole 4, and the linear bolt hole on the first section steel connector and the linear bolt hole on the second section steel connector are crossed to form a cross-shaped adjustable connecting hole. Meanwhile, a plurality of auxiliary steel bars 5 are arranged between two adjacent first section steel connectors or two adjacent second section steel connectors and are located in the post-pouring area. The concrete structure of each part is as follows:
as shown in fig. 2, the first section steel connector and the second section steel connector have the same main structure and respectively comprise a rectangular steel pipe 6 and a connecting steel plate 7, the rectangular steel pipe is pre-buried in the shear wall, the connecting steel plate extends into the rectangular steel pipe and is fixedly connected with the rectangular steel pipe, and a part of the connecting steel plate extending out of the shear wall is provided with a bolt hole shaped like a Chinese character 'yi'. Wherein, the connecting steel plate stretches into rectangle steel pipe department, passes through welded fastening between connecting steel plate and the rectangle steel pipe. In the manufacturing process of the first section steel connector and the second section steel connector, the positions of the two corresponding linking steel plates in the corresponding rectangular steel pipes are properly staggered, so that the two linking steel plates are correspondingly overlapped and connected in construction. A hidden column area is arranged in the shear wall body, a plurality of stress ribs 8 are distributed in the hidden column area, and the periphery of the rectangular steel pipe is connected with the stress ribs in a welding mode. The height of the rectangular steel pipe in the hidden column area is generally about 1/4 of the height of the wall body of the shear wall, and force transmission is guaranteed through the welding fixation of the stress rib 8 in the hidden column area and the outer wall of the rectangular steel pipe. In the design process, the width B of the rectangular steel pipe is equal to hw-2(c + dg + D), wherein the width B is the thickness of the hw shear wall body, c is the thickness of the protective layer, dg is the diameter of the stirrup, and D is the diameter of the stress rib in the dark column area. Wherein, protective layer and stirrup are the common structure of traditional shear force wall. Through welded fastening between atress muscle and the rectangle steel pipe, the length of being connected of atress muscle and rectangle steel pipe should be greater than l ═ N/(fh), and wherein, N is the yield strength of connecting reinforcement, and f is the intensity of welding seam, and h is the effective height of welding seam. The cross-sectional area of the connecting steel plate 7 needs to be calculated through force transmission of the stress rib, and then the minimum wall thickness t is obtained. Because the stress is consistent: since the force is equal to the strength × the area, the connecting steel plate should bear a larger force than the reinforcing bar without breaking, and therefore the area should be large.
A plurality of bolt holes in a shape like a straight line are respectively arranged on the first section steel connector and the second section steel connector; the bolt holes of the first type steel connector are transversely arranged (as shown in figure 4), and the bolt holes of the second type steel connector are longitudinally arranged (as shown in figure 5). The bolt holes in the shape of the straight line on the first profile steel connector and the second profile steel connector are in one-to-one correspondence, the formed adjustable connecting holes can adjust construction errors in the horizontal direction and the longitudinal direction in the plane, the high tolerance capacity is achieved, engineering requirements can be greatly met, and the construction speed can be greatly improved on the basis that the stress is guaranteed through reasonable design. The center distance and the end distance of each "straight" bolt hole should meet the design specification, and the length L, the width B and the radius R (as shown in fig. 4 or fig. 5) of each "straight" bolt hole should be determined according to the screw diameter of the actually adopted bolt and the tolerance capability required by the specification. The first section steel connector and the second section steel connector are fixedly connected at the adjustable connecting hole of the cross shape through a bolt 10 (shown in figure 6). Wherein, the bolt adopts 8.8 grade high strength bolts.
As shown in fig. 1, a plurality of first profile steel connectors or a plurality of second profile steel connectors are installed on the wall body of the shear wall, a plurality of auxiliary steel bars are further arranged between two adjacent first profile steel connectors or two adjacent second profile steel connectors, and the auxiliary steel bars of the two adjacent wall bodies of the shear wall are in one-to-one correspondence and are fixedly connected through electric welding. The auxiliary steel bars are arranged, so that the shearing resistance in the connecting area of the two shear wall bodies can be effectively enhanced, and the shearing resistance of each member in the connecting area is ensured. The auxiliary steel bars are also pre-embedded in the shear wall body, the length of the auxiliary steel bars extending out of the shear wall body is smaller than the height of the post-cast area, in this embodiment, the length is selected to be 100mm, and the overlapping length between the auxiliary steel bars of two adjacent shear wall bodies is 50mm (according to the actual requirement of the shear wall, generally, the length can be selected from 1/3 to 2/3 of the height of the post-cast area).
Two adjacent shear wall bodies are arranged in a vertical connection mode, in the embodiment, the height of each shear wall body is equal to the height of a floor minus 150mm, a post-pouring area 9 (shown in fig. 3) with the width of 150mm is formed between the two shear wall bodies, and the first section steel connector and the second section steel connector are fixedly connected in the post-pouring area. The post-cast area is beneficial to adjusting the construction error of the floor structure in height and provides a working space for bolt construction, micro-expanded fine aggregate concrete in the post-cast area is cast, and stirrups with the spacing of about 50mm are distributed in the post-cast area to increase the restraint capability of the area. In addition, the fine aggregate concrete in the post-cast area can effectively protect the first connector, the second connector and the auxiliary reinforcing steel bars from being corroded, the whole body volume of the post-cast area is small, the field wet operation is small, the operation is simple and convenient, and the construction quality is easy to guarantee. In the first section steel connector and the second section steel connector, the length of the connecting steel plate extending out of the shear wall body is generally about 20mm smaller than the height of a post-cast area, so that construction is facilitated.
When the allowance-capable section steel connecting structure for the assembled shear wall is applied, the principle is as follows: the method comprises the steps that a first section steel connector and a second section steel connector are pre-buried at the connection position of two adjacent shear wall bodies respectively, a post-pouring area is formed at the connection position of the first section steel connector and the second section steel connector, a plurality of linear bolt holes are formed in the first section steel connector and the second section steel connector respectively, the linear bolt holes in the first section steel connector and the second section steel connector correspond to each other one by one to form a cross-shaped adjustable connecting hole, the two linear bolt holes are adjusted in relative positions and are connected in a locking mode through bolts, and therefore the two shear wall bodies can be adjusted in transverse and longitudinal positions and locked and fixed, high tolerance capacity is achieved, and installation and construction of the shear wall bodies are facilitated; in addition, in the post-cast area, the two shear wall bodies are respectively pre-embedded with auxiliary steel bars and fixedly connected in a one-to-one correspondence manner, so that the shear resistance of the two shear wall bodies can be effectively improved.
As described above, the present invention can be realized well, and the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention; all equivalent changes and modifications made according to the present invention are intended to be covered by the scope of the claims of the present invention.
Claims (10)
1. A tolerance-tolerance section steel connecting structure for an assembled shear wall is characterized by comprising a first section steel connector and a second section steel connector which are connected, wherein the first section steel connector and the second section steel connector are respectively embedded in two adjacent shear wall bodies; the connection parts of the first section steel connector and the second section steel connector are respectively provided with a 'straight' bolt hole, and the 'straight' bolt hole on the first section steel connector and the 'straight' bolt hole on the second section steel connector are crossed to form a 'cross' adjustable connecting hole.
2. The tolerance-adjustable steel section connecting structure for the fabricated shear wall as claimed in claim 1, wherein the adjacent two shear wall bodies are arranged in a vertical connection manner, a post-pouring area is formed between the two shear wall bodies, the height of the shear wall bodies is the floor height minus the height of the post-pouring area, and the first steel section connector and the second steel section connector are fixedly connected in the post-pouring area.
3. A tolerance-adjustable steel section connecting structure for an assembled shear wall according to claim 2, wherein a plurality of first steel section connectors or a plurality of second steel section connectors are mounted on the wall body of the shear wall, and a plurality of auxiliary steel bars are arranged between two adjacent first steel section connectors or two adjacent second steel section connectors.
4. The tolerance-adjustable steel section connecting structure for the fabricated shear wall as claimed in claim 3, wherein the length of the auxiliary steel bars extending out of the shear wall bodies is less than the height of the post-cast region, and the overlapping length between the auxiliary steel bars of two adjacent shear wall bodies is 1/3-2/3 of the height of the post-cast region.
5. The tolerance-adjustable steel section connecting structure for the fabricated shear wall as claimed in claim 1, wherein the first steel section connector and the second steel section connector are identical in main structure and respectively comprise rectangular steel pipes and connecting steel plates, the rectangular steel pipes are pre-buried in the shear wall body, the connecting steel plates extend into the rectangular steel pipes and are welded with the rectangular steel pipes, and the portions, extending out of the shear wall body, of the connecting steel plates are provided with bolt holes in a shape of a Chinese character 'yi'.
6. The tolerance-adjustable steel section connecting structure for the fabricated shear wall as claimed in claim 5, wherein the width B of the rectangular steel tube is hw-2(c + dg + D), wherein the width B is the thickness of the hw shear wall body, c is the thickness of the protective layer, dg is the diameter of the stirrup, and D is the diameter of the stress rib in the embedded column.
7. A tolerance-adjustable steel section connecting structure for an assembled shear wall according to claim 5, wherein a hidden column region is arranged in the wall body of the shear wall, a plurality of stress bars are distributed in the hidden column region, and the periphery of the rectangular steel tube is fixedly connected with the stress bars.
8. The tolerance-allowable steel section connecting structure for the fabricated shear wall as claimed in claim 7, wherein the stress rib and the rectangular steel tube are fixed by welding, and the connecting length of the stress rib and the rectangular steel tube is greater than l ═ N/(fh), where N is the yield force of the stress rib, f is the strength of the welding seam, and h is the effective height of the welding seam.
9. A tolerance-tolerant steel section connecting structure for an assembled shear wall according to claim 1, wherein the first steel section connector and the second steel section connector are respectively provided with a plurality of bolt holes in a shape of a straight line; each "style of calligraphy" bolt hole on the first shaped steel connector is horizontal setting, and each "style of calligraphy" bolt hole on the second shaped steel connector is vertical setting.
10. A tolerance-adjustable steel section connecting structure for an assembled shear wall according to claim 1, wherein the first steel section connector and the second steel section connector are fixedly connected by bolts at the adjustable connecting holes of the cross shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921186480.XU CN210421515U (en) | 2019-07-26 | 2019-07-26 | Tolerance-allowable profile steel connecting structure for assembled shear wall |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921186480.XU CN210421515U (en) | 2019-07-26 | 2019-07-26 | Tolerance-allowable profile steel connecting structure for assembled shear wall |
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| CN210421515U true CN210421515U (en) | 2020-04-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110439141A (en) * | 2019-07-26 | 2019-11-12 | 广州大学 | It is a kind of for fabricated shear wall can tolerance steel section jointing structure |
| CN116950225A (en) * | 2023-08-25 | 2023-10-27 | 中国电建集团华东勘测设计研究院有限公司 | Connecting piece and prefabricated building component |
-
2019
- 2019-07-26 CN CN201921186480.XU patent/CN210421515U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110439141A (en) * | 2019-07-26 | 2019-11-12 | 广州大学 | It is a kind of for fabricated shear wall can tolerance steel section jointing structure |
| CN116950225A (en) * | 2023-08-25 | 2023-10-27 | 中国电建集团华东勘测设计研究院有限公司 | Connecting piece and prefabricated building component |
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