Basement outer wall formwork system

Abstract

The utility model discloses a basement outer wall formwork system which comprises outer wall formworks, inclined struts and horizontal struts, the outer wall formworks are correspondingly erected on the two sides of an outer wall guide wall, secondary keels and main keels are arranged on the outer sides of the outer wall formworks, and the inner outer wall formwork and the outer outer wall formwork are fixed in a pulling mode through a plurality of sets of opposite-pulling water stop bolts in cooperation with the secondary keels and the main keels. A water stop steel plate is embedded in the middle of the top end of the outer wall guide wall, a tongue-and-groove is formed in the inner side of the top end of the water stop steel plate, a sponge strip is attached to the lower opening of the tongue-and-groove, and the bottom end of the outer wall formwork extends to the position below a first row of bolt holes in the top of the outer wall guide wall and is fixed to the outer wall guide wall through opposite-pulling water stop bolts penetrating through the bolt holes. The inclined struts and the horizontal struts are correspondingly arranged on the two sides of the outer wall formwork, and the outer wall formwork is supported in place. According to the utility model, node optimization is carried out on a basement outer wall formwork system, the straight joint of the outer wall guide wall and the basement outer wall is ensured, meanwhile, the strength and rigidity of formwork erection are enhanced, and the forming quality of cast-in-place concrete of the joint is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a basement exterior wall formwork system. Background Art

[0002] With the high-quality development of the construction industry, the quality requirements for cast-in-place concrete structures are getting higher and higher. The industry is focusing on creating high-quality projects. In the process of building high-quality projects, process quality is also the focus of major construction companies. At present, in the process of concrete structure construction, the quality of concrete forming at the joints has always been an urgent problem to be solved in the industry. For example, in the process of pouring the exterior wall of the basement, the guide wall is generally poured first, and then the top of the guide wall is roughened, and then the exterior wall formwork is supported on the top of the guide wall for pouring the exterior wall of the basement. Since the top of the guide wall is prone to mold expansion during the pouring process, the position of the top of the guide wall is not flat, which leads to the subsequent pouring of the exterior wall of the basement. The root of the basement exterior wall formwork is difficult to be closely attached to the exterior facade of the guide wall. However, in the current practice, the template installation at the joint of the guide wall is mostly carried out by simply sticking sponge strips, and the primary and secondary keels are only supported at the joints for reinforcement. This template construction method is very likely to cause the joints to leak molds and the joints are not straight, which seriously affects the molding quality of the cast-in-place concrete at the joints, and it is difficult to meet the construction requirements of high-quality projects. Utility Model Content

[0003] The utility model aims to provide a basement exterior wall formwork system to solve the technical problems described in the background technology.

[0004] In order to achieve the above technical purpose, the utility model adopts the following technical solutions:

[0005] A basement exterior wall formwork system, comprising an exterior wall formwork, an oblique brace and a horizontal brace, wherein the exterior wall formwork is correspondingly set up on both sides of an exterior wall guide wall, a secondary keel and a main keel are arranged on the outside of the exterior wall formwork, and the interior and exterior exterior wall formworks are fixed by a plurality of groups of tension stop bolts in conjunction with the secondary keel and the main keel;

[0006] A water-stop steel plate is buried in the middle of the top of the external wall guide wall, a tongue and groove is arranged at the inner side of the top, and a sponge strip is attached to the lower end of the tongue and groove. The bottom end of the external wall template extends to below the first row of bolt eyes at the top of the external wall guide wall, and is fixed to the external wall guide wall by tensioning water-stop bolts inserted in the bolt eyes.

[0007] The diagonal brace is tilted, with its top end resting on the main keel arranged at the exterior wall formwork on one side of the room, and its bottom end resting on the basement floor, and limited by the locking foot assembly;

[0008] The horizontal support is arranged horizontally, one end of which is against the main keel arranged at the external wall formwork on the outdoor side, and the other end of which is against the side wall of the foundation pit.

[0009] Preferably, the diagonal braces and horizontal braces are both made of a combination of scaffolding steel pipes and adjustable braces.

[0010] Preferably, the locking foot assembly includes locking foot timber and ground anchor steel bars, the locking foot timber being placed on the basement floor at the bottom end of the diagonal brace, the ground anchor steel bars being arranged at intervals on a side of the locking foot timber away from the diagonal brace, and the ground anchor steel bars being anchored in the basement floor concrete in a pre-embedded manner.

[0011] Preferably, the diagonal braces and horizontal braces are arranged in a plurality of groups at intervals in the span direction, a plurality of diagonal braces and horizontal braces in the same group are arranged at intervals in the vertical direction, and the diagonal braces and horizontal braces are arranged in an alternating manner in the vertical direction.

[0012] Preferably, several diagonal braces in the same group are connected as a whole through a diagonal brace reinforcement rod.

[0013] Preferably, the tongue and groove is reserved during the pouring stage by nailing a tongue and groove strip on the top of the guide wall formwork.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model optimizes the nodes of the basement exterior wall formwork system, and ensures that the joint between the exterior wall guide wall and the basement exterior wall is straight by leaving a tongue and groove on the exterior wall guide wall and cooperating with a slurry-stopping sponge strip. At the same time, by moving the bottom end of the basement exterior wall formwork downward, the exterior wall formwork is hung down to 100mm below the bolt eye at the top of the exterior wall guide wall, and in conjunction with diagonal braces, horizontal braces, locking wooden squares and ground anchor steel bars, the strength and rigidity of the formwork support are enhanced, ensuring that the formwork expansion and slurry leakage will not occur during the concrete pouring process, thereby improving the molding quality of the cast-in-place concrete at the joints. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and / or other aspects and advantages of the present invention will become clearer and easier to understand through the detailed description made in conjunction with the following drawings, which are only schematic and do not limit the present invention, wherein:

[0016] Figure 1 It is a structural schematic diagram of a basement exterior wall formwork system involved in the utility model;

[0017] Figure 2 for Figure 1 A schematic diagram of the enlarged structure at the middle tongue-and-groove;

[0018] Figure 3 The utility model is a schematic diagram of the structure of the external wall guide wall during pouring.

[0019] Figure numerals: 1. Basement floor; 2. Basement exterior wall; 3. Exterior wall guide wall; 4. Tongue and groove; 5. Fertilizer trough; 6. Foundation pit side wall; 7. Guide wall formwork; 8. Exterior wall formwork; 9. Secondary purlin; 10. Main purlin; 11. Pull-type waterstop bolts; 12. Tongue and groove strips; 13. Diagonal brace; 14. Horizontal brace; 15. Locking wooden square; 16. Ground anchor steel bars; 17. Sponge strips; 18. Waterstop steel plates; 19. Diagonal brace reinforcement rods. DETAILED DESCRIPTION

[0020] Hereinafter, an embodiment of a basement exterior wall formwork system of the utility model will be described with reference to the accompanying drawings. The embodiments described herein are specific embodiments of the utility model, which are used to illustrate the concept of the utility model, are explanatory and exemplary, and should not be interpreted as limiting the implementation methods of the utility model and the scope of the utility model. In addition to the embodiments described herein, those skilled in the art can also adopt other obvious technical solutions based on the contents disclosed in the claims and the specification of this application, including technical solutions that adopt any obvious replacements and modifications to the embodiments described herein.

[0021] In the description of the present invention, it should be noted that the terms "front", "rear", "left", "right", "top", "bottom", "up", "down", "inside", "outside", "horizontal", "longitudinal", "vertical", "oblique" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0022] The drawings of this specification are schematic diagrams, which assist in explaining the concept of the utility model and schematically show the shapes of various parts and their mutual relationships. Please note that in order to clearly show the structure of various components of the embodiments of the utility model, the drawings are not drawn according to the same scale. The same reference numerals are used to represent the same parts.

[0023] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The embodiments are only used to explain the present invention and are not intended to limit the scope of the present invention. Figure 1-3 , the preferred embodiments of the utility model are further described in detail:

[0024] like Figure 1-2As shown, the utility model preferably adopts a basement exterior wall formwork system, including an exterior wall formwork 8, a diagonal brace 13 and a horizontal brace 14, the exterior wall formwork 8 adopts a 15mm thick multilayer board, the exterior wall formwork 8 is correspondingly set up on both sides of the exterior wall guide wall 3, and a secondary keel 9 (50*100mm) and a main keel 10 (48mm double steel pipe) are arranged on the outside of the exterior wall formwork 8, and the inner and outer exterior wall formworks 8 are fixed by a plurality of groups of pull-stop bolts 11 in conjunction with the secondary keel 9 and the main keel 10;

[0025] A water-stop steel plate 18 is buried in the middle of the top of the external wall guide wall 3, a tongue and groove 4 is provided at the inner side of the top, and a sponge strip 17 is attached to the lower end of the tongue and groove 4. The bottom end of the external wall template 8 extends to below the first row of bolt eyes at the top of the external wall guide wall 3, and is fixed to the external wall guide wall 3 by the tensioning water-stop bolts 11 inserted in the bolt eyes.

[0026] The diagonal brace 13 is tilted, with its top end resting on the main keel 10 arranged at the exterior wall formwork 8 on one side of the room, and its bottom end resting on the basement floor 1, and limited by the locking foot assembly;

[0027] The horizontal support 14 is arranged horizontally, one end of which is against the main keel 10 arranged at the exterior wall formwork 8 on the outdoor side, and the other end of which is against the foundation pit side wall 6;

[0028] From the perspective of convenient material acquisition on site, the diagonal brace 13 and the horizontal brace 14 are both a combination of scaffolding steel pipes and adjustable braces. This structural combination can not only ensure the support strength, but also adjust its own length according to the support requirements to ensure that the external wall formwork 8 can be reliably supported;

[0029] The horizontal support 14 is supported in the fertilizer trough 5, and the end of the scaffolding steel pipe of the horizontal support 14 is against the side wall of the foundation pit by padding the scaffolding board, and the U support of the horizontal support 14 is stuck at the main keel 10 to form a stable horizontal force transmission system to ensure the stability of the external wall formwork 8;

[0030] The diagonal brace 13 is arranged on one side of the room, the U-shaped bracket of the diagonal brace 13 is stuck on the main keel 10, and the end of the scaffolding steel pipe of the diagonal brace 13 is against the locking foot assembly, which can prevent the diagonal brace 13 from slipping and ensure the stability of the formwork system. The locking foot assembly includes a locking foot wooden square 15 and a ground anchor steel bar 16. The locking foot wooden square 15 is placed on the basement floor 1 at the bottom end of the diagonal brace 13, and the ground anchor steel bar 16 is arranged at intervals on the side of the locking foot wooden square 15 away from the diagonal brace 13, and the ground anchor steel bar 16 is pre- The diagonal brace 13 is anchored in the concrete of the basement floor 1 in an embedded manner. The end of each diagonal brace 13 corresponds to a locking foot wood square 15. The back side of a locking foot wood square 15 is limited by at least two anchor steel bars 16. The anchor steel bars 16 are pre-embedded in advance during the pouring stage of the basement floor 1. When the diagonal brace 13 is supported, the locking foot wood square 15 needs to be placed at the anchor steel bar 16 first, and then the diagonal brace 13 is placed in place. During this period, the length of the diagonal brace 13 needs to be adjusted to ensure that the bottom end of the diagonal brace 13 can be tightly against the locking foot wood square 15.

[0031] The diagonal braces 13 and the horizontal braces 14 are arranged in a plurality of groups at intervals in the span direction, and the arrangement spacing is preferably 3m. A plurality of diagonal braces 13 and the horizontal braces 14 in the same group are arranged at intervals in the vertical direction, and the diagonal braces 13 and the horizontal braces 14 are arranged staggered in the vertical direction. The staggered arrangement can reduce the number of diagonal braces 13 and the horizontal braces 14 as much as possible while ensuring the overall stable stress of the external wall formwork 8, thereby reducing the labor intensity on site;

[0032] Of course, in order to further improve the stability of the diagonal braces 13, several diagonal braces 13 in the same group can be connected as a whole through a diagonal brace reinforcement rod 19. The diagonal brace reinforcement rod 19 adopts the structure of a scaffolding steel pipe. The diagonal brace reinforcement rod 19 is inclined in the opposite direction to the diagonal brace 13, and its bottom end is against the basement floor 1. Its rod body is fixedly connected to the diagonal brace 13 at the intersection position through a steel pipe fastener. By connecting several diagonal braces 13 as a whole, multiple diagonal braces 13 in each group can be subjected to force together, further improving the integrity and stability of the formwork system.

[0033] like Figure 3As shown, when designing the guide wall formwork 7 of the basement concrete structure, the convenience of subsequent installation of the external wall formwork 8 is taken into consideration in advance. When installing the inner guide wall formwork 7, a 30mm (width) * 15 (height) mm template strip is installed on the upper mouth of the inner guide wall formwork 7 as a tongue and groove strip 12. The tongue and groove strip 12 is fixed to the guide wall formwork 7 by cement nails. After the guide wall concrete is poured, a reserved tongue and groove 4 is formed. The guide wall formwork 7 adopts 15mm thick multilayer board, the secondary keel 9 adopts 50*100mm square wood, and the main keel 10 adopts 48mm double steel pipe. The addition of the tongue and groove 4 can avoid the problem of uneven upper mouth caused by the expansion of the top of the external wall guide wall 3 on the one hand, and can also avoid the problem of uneven joints caused by chiseling on the other hand. Since the size of the tongue and groove 4 is small, in the pouring section of the basement external wall 2, only fine aggregate concrete will flow into the tongue and groove 4 space, thereby making the joint at the tongue and groove 4 more straight and beautiful.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A basement exterior wall formwork system, characterized in that: It comprises an external wall formwork (8), an oblique brace (13) and a horizontal brace (14), wherein the external wall formwork (8) is correspondingly erected on both sides of an external wall guide wall (3), a secondary keel (9) and a main keel (10) are arranged on the outside of the external wall formwork (8), and the internal and external external wall formworks (8) are fixed together by a plurality of groups of tension stop bolts (11) in cooperation with the secondary keel (9) and the main keel (10); A water-stop steel plate (18) is embedded in the middle of the top of the external wall guide wall (3), a tongue and groove (4) is provided at the inner side of the top, and a sponge strip (17) is attached to the lower end of the tongue and groove (4), the bottom end of the external wall template (8) extends to below the first row of bolt eyes at the top of the external wall guide wall (3), and is fixed to the external wall guide wall (3) by means of tensioning water-stop bolts (11) inserted through the bolt eyes; The diagonal brace (13) is arranged obliquely, with its top end resting on the main keel (10) arranged at the exterior wall formwork (8) on one side of the room, and its bottom end resting on the basement floor (1), and being limited by a locking foot assembly; The horizontal support (14) is arranged horizontally, with one end thereof abutting against a main keel (10) arranged at an exterior wall formwork (8) on one side outdoors, and the other end thereof abutting against a foundation pit side wall (6).

2. A basement exterior wall formwork system according to claim 1, characterized in that: The diagonal brace (13) and the horizontal brace (14) are both made of a combination of scaffolding steel pipes and adjustable braces.

3. A basement exterior wall formwork system according to claim 1, characterized in that: The locking foot assembly comprises a locking foot timber (15) and a ground anchor steel bar (16); the locking foot timber (15) is placed on the basement floor slab (1) at the bottom end of the diagonal brace (13); the ground anchor steel bars (16) are arranged at intervals on a side of the locking foot timber (15) away from the diagonal brace (13); and the ground anchor steel bars (16) are anchored in the concrete of the basement floor slab (1) in a pre-embedded manner.

4. A basement exterior wall formwork system according to claim 1, characterized in that: The diagonal braces (13) and the horizontal braces (14) are arranged in a plurality of groups at intervals in the span direction, and a plurality of diagonal braces (13) and horizontal braces (14) in the same group are arranged at intervals in the vertical direction, and the diagonal braces (13) and the horizontal braces (14) are arranged in a staggered manner in the vertical direction.

5. A basement exterior wall formwork system according to claim 4, characterized in that: A plurality of diagonal braces (13) in the same group are connected as a whole via a diagonal brace reinforcing rod (19).

6. The basement exterior wall formwork system according to claim 1, characterized in that: The tongue and groove (4) is reserved during the pouring stage by means of a tongue and groove strip (12) nailed to the top of the guide wall formwork (7).

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