Inducing joint structure and construction method for basement outer wall skip-bay-method construction

Abstract

The invention discloses an induced joint structure and a construction method for basement outer wall skip construction, and relates to the technical field of part-time construction, the induced joint structure comprises a connecting assembly arranged at a construction joint between a wall body pre-pouring bin and a wall body post-pouring bin, and the connecting assembly comprises a vertical steel plate arranged in an inclined mode; a first transverse steel plate and a second transverse steel plate are fixedly connected to the vertical center portions of the two sides of the vertical steel plate, first studs are fixedly connected to the side, facing the wall pre-pouring bin, of the vertical steel plate, angle steel is fixedly connected to the side, facing the wall pre-pouring bin, of the vertical steel plate, the angle steel is fixedly connected with first horizontal steel bars, and second studs are connected to the front side and the rear side of the second transverse steel plate. The end, away from the vertical steel plate, of the second transverse steel plate is fixedly connected with an anti-streaming iron sheet. The induced joint structure and the construction method have the beneficial effects that the problem that in the prior art, due to the fact that long-term shrinkage stress of concrete is large, cracks still possibly appear in the later period during construction of the basement outer wall by the aid of the skip-bay method is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and in particular to a construction-induced joint structure and construction method for the skip-joint method of the basement exterior wall construction. Background Art

[0002] In modern building projects, super-long and large-volume concrete structures are very common. However, during the construction process of such structures, concrete cracking problems are extremely likely to occur, which will not only affect the durability and safety of the structure, but may also lead to serious consequences such as leakage, greatly shortening the service life of the building. To effectively address this challenge, the skip-joint pouring construction method has emerged and has been widely promoted and applied in the engineering field.

[0003] The core of the skip-joint pouring construction method lies in dividing a large-area concrete structure into several small areas and pouring them sequentially at certain time intervals. By reasonably setting the skip-joint sections, the shrinkage stress of the concrete can be controlled. However, the long-term shrinkage stress of the concrete is often large, and cracks may still occur after using the skip-joint method. Setting induced joints can reduce the damage of cracks to the structure. Induced joints can preset the positions where cracks occur, enabling the cracks to develop along the path of the induced joints rather than at random positions in the concrete structure. This can prevent cracks from occurring in the key stress-bearing parts of the structure or important areas affecting the integrity of the structure, ensuring the safety and stability of the structure. Compared with the concrete structure without induced joints, setting induced joints can effectively limit the width of the cracks, control the crack width within the allowable range, and avoid leakage. At the same time, compared with the traditional construction joint treatment methods, the waterproof design of induced joints is more refined and effective, which can improve the waterproof performance of the structure and reduce the leakage risk.

[0004] However, during the current skip-joint method construction process, more attention is paid to the setting of construction joints, and there are obvious deficiencies in the research on the setting structure of induced joints. In the existing technology, simple straight steel plates or rubber waterstops are usually used as construction joint treatment measures. These methods have many problems in practical applications: on the one hand, it is difficult to ensure the installation accuracy of straight steel plates or rubber waterstops, and displacements, deformations, etc. are likely to occur, resulting in poor waterproof effects at the construction joints. Once leakage occurs, it will cause serious damage to the entire structure; on the other hand, these traditional methods cannot effectively control the positions and widths of the later cracks, making the concrete unable to release stress in the expected way during the shrinkage process, and there is still a certain cracking risk. In addition, the construction joint treatment measures in the existing technology often require additional support and fixing devices, increasing the construction cost and construction difficulty, and the construction efficiency is low.

[0005] Therefore, how to solve the above technical problems becomes the technical issue faced by this application. Summary of the Invention

[0006] The object of the present invention is to provide a construction induced joint structure and construction method for the skip floor method of the basement exterior wall, so as to solve the problem that in the prior art, due to the relatively large long-term shrinkage stress of the concrete in the skip floor method construction, cracks may still occur in the later stage. Specifically, by combining the construction joint of the skip floor section during the construction of the basement exterior wall by the skip floor method, an induced joint is locally set at a suitable position.

[0007] To achieve the above object, the present invention provides the following technical solution: A construction induced joint structure for the skip floor method of the basement exterior wall, including a connection component arranged at the construction joint between the first-poured bin of the wall body and the second-poured bin of the wall body;

[0008] The connection component includes a vertical steel plate arranged obliquely from top to bottom. The two sides of the vertical steel plate are respectively attached to the outer walls of the first-poured bin of the wall body and the second-poured bin of the wall body. At the central parts of the two sides of the vertical steel plate in the vertical direction, a first horizontal steel plate and a second horizontal steel plate are fixedly connected respectively and extend to the inner sides of the first-poured bin of the wall body and the second-poured bin of the wall body and are horizontally arranged;

[0009] On one side of the vertical steel plate facing the first-poured bin of the wall body, a plurality of pairs of first stud bolts extending to the inner side of the first-poured bin of the wall body are fixedly connected at equal intervals from top to bottom. The two columns of the first stud bolts are symmetrically arranged on both sides of the first horizontal steel plate;

[0010] On one side of the vertical steel plate facing the first-poured bin of the wall body, a plurality of pairs of angle steels extending to the inner side of the first-poured bin of the wall body are fixedly connected at equal intervals from top to bottom. The ends of the angle steels far from the vertical steel plate are respectively fixedly connected with the first horizontal reinforcement bars in the first-poured bin of the wall body;

[0011] On the front and rear sides of the part of the second horizontal steel plate located inside the second-poured bin of the wall body, a plurality of second stud bolts are fixedly connected at equal intervals from top to bottom respectively. On the front and rear sides of the end of the second horizontal steel plate far from the vertical steel plate, anti-bypass iron sheets extending to the inner side of the second-poured bin of the wall body are fixedly connected respectively.

[0012] The included angles between the first horizontal steel plate and the front and rear sides of the vertical steel plate are 135° and 75° respectively, and the included angles between the second horizontal steel plate and the front and rear sides of the vertical steel plate are 75° and 135° respectively;

[0013] The width of the first horizontal steel plate is 150 mm, and the width of the second horizontal steel plate is 200 mm.

[0014] The central axis of the first stud bolt is perpendicular to the plate surface of the vertical steel plate, and the central axis of the second stud bolt is perpendicular to the plate surface of the second horizontal steel plate;

[0015] The diameters of the first stud bolt and the second stud bolt are both 16 mm, and the vertical spacing between the first stud bolt and the second stud bolt is 200 m.

[0016] The axis of the angle steel is perpendicular to the plate surface of the vertical steel plate;

[0017] The angle steel is welded to the vertical steel bars and the weld leg height is 8 mm.

[0018] The two anti-flow-around iron sheets are parallel to each other and their width is 900 mm;

[0019] The thickness of the anti-flow-around iron sheet is 0.5 mm and it is spot-welded to the second horizontal steel plate.

[0020] The construction method of the induced joint structure for the construction of the skip-loading method for the basement exterior wall includes the following steps:

[0021] Step 1: After the inner wall steel bars of the first casting bay of the wall are tied, the outer ring of the first horizontal steel bars in the first casting bay of the wall are welded and connected to the vertical steel plate through the angle steel, and then the vertical steel plate is welded to the first stud arranged towards the inner side of the first casting bay of the wall, and then the concrete of the first casting bay section of the wall is poured;

[0022] Step 2: After seven days, the inner wall steel bars in the subsequent casting bay section of the wall are tied, and the second horizontal steel bars on the inner and outer sides are bent inwards.

[0023] Step 3: The second stud is welded to the second horizontal steel plate, and then the anti-flow-around iron sheets are symmetrically welded to the front and back sides of the inner end of the second horizontal steel plate, and finally the concrete of the subsequent casting bay section of the wall is poured.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] 1. The vertical steel plate, the first horizontal steel plate and the second horizontal steel plate of the present invention are integrally manufactured in the factory and can be directly installed on site, ensuring product quality. The steel plate can also serve as a formwork, realizing support-free installation construction, saving formwork and support costs, and saving construction time;

[0026] 2. The horizontal steel plate provided by the present invention has a better waterproof effect than the waterstop steel plate and the waterstop belt, reducing the risk of water leakage.

[0027] 3. By changing the connection position between the stud and the steel plate, the present invention realizes the strong and weak connection between the steel plate and the concrete, and objectively and effectively controls the accurate position of the induced joint;

[0028] 4. The present invention is provided with anti-flow-around iron sheets, further optimizing the waterproof effect and completely eliminating the risk of water seepage. Brief Description of the Drawings

[0029] Figure 1 It is a top view of the present invention in the state of removing the concrete body inside the wall;

[0030] Figure 2 It is a three-dimensional structure diagram of the present invention in the state of removing the concrete body inside the wall;

[0031] Figure 3 Schematic perspective view of the connector of the present invention.

[0032] Reference numerals in the figure:

[0033] 1. Wall first-poured bin; 101. First horizontal steel bar; 2. Wall post-poured bin; 201. Second horizontal steel bar; 3. Construction joint; 4. Connection assembly; 401. Vertical steel plate; 402. First horizontal steel plate; 403. Second horizontal steel plate; 404. First stud; 405. Angle steel; 406. Second stud; 407. Anti-bypass iron sheet. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] As Figure 1 - Figure 3 shown, the present invention provides an induced joint structure for the construction of the skip bin method for the basement exterior wall, which is characterized in that it includes a connection assembly 4 provided at the construction joint 3 between the wall first-poured bin 1 and the wall post-poured bin 2. The connection assembly 4 includes a vertically arranged vertical steel plate 401 obliquely arranged from top to bottom. Both sides of the vertical steel plate 401 are respectively attached to the outer walls of the wall first-poured bin 1 and the wall post-poured bin 2. At the central parts of both sides of the vertical steel plate 401 in the vertical direction, a first horizontal steel plate 402 and a second horizontal steel plate 403 which extend to the inner sides of the wall first-poured bin 1 and the wall post-poured bin 2 and are horizontally arranged are fixedly connected respectively;

[0036] The synergistic effect of the vertical steel plate 401, the first horizontal steel plate 402 and the second horizontal steel plate 403 is equivalent to the function of the original construction joint wire mesh + waterstop steel plate, connecting the pre-poured and post-poured bin sections, preventing leakage of concrete during pouring, playing the role of a side formwork that does not need to be disassembled for the wall, and the steel plate is equivalent to the function of the waterstop steel plate, playing a certain waterproofing role. At the same time, compared with the vertical setting, the oblique setting extends the water seepage path and has a better waterproof effect.

[0037] On the side of the vertical steel plate 401 facing the wall first-poured bin 1, a plurality of pairs of first studs 404 extending to the inner side of the wall first-poured bin 1 are fixedly connected at equal intervals from top to bottom. Two columns of first studs 404 are symmetrically arranged on both sides of the first horizontal steel plate 402;

[0038] The setting of the first studs 404 can realize the effective connection between the steel plate and the concrete, so as to effectively and strongly connect the steel bars and the concrete with the steel plate.

[0039] On the side of the vertical steel plate 401 facing the first-poured bin 1 of the wall, a number of pairs of angle steels 405 extending to the inside of the first-poured bin 1 of the wall are fixedly connected at equal intervals from top to bottom. One end of the angle steel 405 away from the vertical steel plate 401 is fixedly connected to the first horizontal steel bar 101 in the first-poured bin 1 of the wall respectively;

[0040] The first horizontal steel bar 101 is welded to the vertical steel plate 401 through the angle steel 405, and reliable connection can be achieved.

[0041] On the front and back sides of the part of the second horizontal steel plate 403 located inside the second-poured bin 2 of the wall, a number of second stud bolts 406 are fixedly connected at equal intervals from top to bottom. On the front and back sides of one end of the second horizontal steel plate 403 away from the vertical steel plate 401, anti-bypass iron sheets 407 extending to the inside of the second-poured bin 2 of the wall are fixedly connected respectively;

[0042] The second horizontal steel bar 201 does not contact the second horizontal steel plate. Weak connection is achieved at both ends of the second-poured bin 2 of the wall to form an induced joint. The setting of the second stud bolt 406 realizes the effective connection between the connector 4 and the middle concrete of the wall. The middle of the wall is a strong connection, and the anti-bypass iron sheet 407 is used to extend the seepage path and prevent water leakage through cracks.

[0043] The included angles between the first horizontal steel plate 402 and the front and back sides of the vertical steel plate 401 are 135° and 75° respectively, and the included angles between the second horizontal steel plate 403 and the front and back sides of the vertical steel plate 401 are 75° and 135° respectively. The width of the first horizontal steel plate 402 is 150 mm, and the width of the second horizontal steel plate 403 is 200 mm. The central axis of the first stud bolt 404 is perpendicular to the plate surface of the vertical steel plate 401, and the central axis of the second stud bolt 406 is perpendicular to the plate surface of the second horizontal steel plate 403. The diameters of both the first stud bolt 404 and the second stud bolt 406 are 16 mm, and the vertical spacing between the first stud bolt 404 and the second stud bolt 406 is 200 m. The axis of the angle steel 405 is perpendicular to the plate surface of the vertical steel plate 401, and the angle steel 405 is welded to the vertical steel bar 101 with a fillet weld height of 8 mm.

[0044] The two anti-bypass iron sheets 407 are parallel to each other, with a width of 900 mm. The thickness of the anti-bypass iron sheet 407 is 0.5 mm, and it is spot-welded to the second horizontal steel plate 403.

[0045] The construction method for the induced joint structure in the skip-loading method construction of the basement exterior wall includes the following steps:

[0046] Step 1: After the inner wall steel bars of the first-poured bin 1 of the wall are tied, the outer first horizontal steel bar 101 in the first-poured bin 1 of the wall is welded to the vertical steel plate 401 through the angle steel 405. Then, the vertical steel plate 401 is welded to the first stud bolt 404 arranged towards the inside of the first-poured bin 1 of the wall. Then, the concrete of the first-poured bin 1 of the wall is poured;

[0047] Step 2: After seven days, tie the steel bars within the second post-cast bin 2 of the wall. The second horizontal steel bars 201 on the inner and outer sides are bent inward.

[0048] Step 3: Weld the second stud 406 to the second horizontal steel plate 403. Then, symmetrically weld the anti-flow-around iron sheets 407 to the front and rear sides of the inner end of the second horizontal steel plate 403. Finally, pour concrete into the second post-cast bin 2 of the wall.

[0049] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A construction-induced joint structure for the skip-joint method of the basement exterior wall, characterized in that A connecting component (4) is provided at a construction joint (3) between a first-cast wall bin (1) and a second-cast wall bin (2); The connecting component (4) includes a vertical steel plate (401) obliquely arranged from top to bottom. The two sides of the vertical steel plate (401) are respectively attached to the outer walls of the first-cast wall bin (1) and the second-cast wall bin (2). At the central parts of the two vertical sides of the vertical steel plate (401), a first horizontal steel plate (402) and a second horizontal steel plate (403) which extend into the inner sides of the first-cast wall bin (1) and the second-cast wall bin (2) respectively and are horizontally arranged are fixedly connected; On one side of the vertical steel plate (401) facing the first-cast wall bin (1), a number of pairs of first stud bolts (404) extending into the inner side of the first-cast wall bin (1) are fixedly connected at equal intervals from top to bottom. The two columns of the first stud bolts (404) are symmetrically arranged on both sides of the first horizontal steel plate (402); On one side of the vertical steel plate (401) facing the first-cast wall bin (1), a number of pairs of angle steels (405) extending into the inner side of the first-cast wall bin (1) are fixedly connected at equal intervals from top to bottom. One ends of the angle steels (405) far from the vertical steel plate (401) are respectively fixedly connected to the first horizontal steel bars (101) in the first-cast wall bin (1); On the front and back sides of the part of the second horizontal steel plate (403) located inside the second-cast wall bin (2), a number of second stud bolts (406) are fixedly connected at equal intervals from top to bottom. On the front and back sides of one end of the second horizontal steel plate (403) far from the vertical steel plate (401), anti-flow-around iron sheets (407) extending into the inner side of the second-cast wall bin (2) are fixedly connected; 2. The induced joint structure for the construction of the skip floor method for the basement exterior wall according to claim 1, characterized in that, The included angles between the first horizontal steel plate (402) and the front and back sides of the vertical steel plate (401) are 135° and 75° respectively, and the included angles between the second horizontal steel plate (403) and the front and back sides of the vertical steel plate (401) are 75° and 135° respectively; The width of the first horizontal steel plate (402) is 150 mm, and the width of the second horizontal steel plate (403) is 200 mm; 3. The induced joint structure for the construction of the skip floor method for the basement exterior wall according to claim 1, characterized in that, The central axis of the first stud bolt (404) is perpendicular to the plate surface of the vertical steel plate (401), and the central axis of the second stud bolt (406) is perpendicular to the plate surface of the second horizontal steel plate (403); The diameters of both the first stud bolt (404) and the second stud bolt (406) are 16 mm, and the vertical spacing between the first stud bolt (404) and the second stud bolt (406) is 200 m; 4. The induced joint structure for the construction of the skip floor method for the basement exterior wall according to claim 1, characterized in that, The axis of the angle steel (405) is perpendicular to the plate surface of the vertical steel plate (401); The angle steel (405) is welded to the vertical steel bar (101) with a fillet weld height of 8 mm; 5. A construction-induced joint structure for the skip floor method of the basement exterior wall according to claim 4, characterized in that, The two anti-flow-around iron sheets (407) are parallel to each other, and their width is 900 mm; The thickness of the anti-flow-around iron sheet (407) is 0.5 mm, and it is spot-welded to the second horizontal steel plate (403); 6. Construction method for induced joint structure in skip floor method construction of basement exterior wall, applicable to the induced joint structure in skip floor method construction of basement exterior wall as described in any one of claims 1-5, characterized in that: It includes the following steps: S1. After the steel bars in the first wall casting bay (1) are tied, the outermost first horizontal steel bar (101) in the first wall casting bay (1) is welded to the vertical steel plate (401) through the angle steel (405). Then, the vertical steel plate (401) is welded to the first stud (404) arranged towards the inner side of the first wall casting bay (1). Subsequently, concrete is poured in the section of the first wall casting bay (1). S2. After seven days, the steel bars in the section of the second wall casting bay (2) are tied, and the second horizontal steel bars (201) on the inner and outer sides are bent inwards. S3. The second stud (406) is welded to the second horizontal steel plate (403). Then, the anti - flow - around iron sheets (407) are symmetrically welded to the front and rear sides of the inner end of the second horizontal steel plate (403). Finally, concrete is poured in the second wall casting bay (2).

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