Formwork for pouring shear wall at deformation joint between building units
By using a combination of steel formwork and wooden formwork at the deformation joints between building units, and using the connection method of pulling screws and fasteners, the construction difficulty and environmental pollution problems in shear wall pouring are solved, and high-quality concrete pouring and reusable formwork are achieved.
Patent Information
- Application Number
- CN202422264911.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-14
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-09-14
AI Technical Summary
The prior art has problems such as high construction difficulty, poor concrete quality, unreusable formwork and serious environmental pollution in the pouring of shear walls at deformation joints between building units.
A pouring formwork system consisting of steel formwork and wooden formwork is adopted. The steel formwork is located on the outside of the shear wall to be poured and the wooden formwork is located on the inside. The two are connected by pulling screws and fasteners to ensure the stability and reusability of the formwork.
It effectively solves the problem of shear wall casting at the deformation joints, ensures the quality of concrete casting, reduces construction costs and environmental pollution, and the formwork can be reused multiple times.
Smart Images
Figure CN223034515U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of building construction formwork, in particular to a shear wall pouring formwork at the deformation joint between building units. Background Art
[0002] There is usually a deformation joint designed between building units. Due to the narrow width of the deformation joint (about 100 mm), there is no working surface during the formwork reinforcement construction, which brings inconvenience to the construction of shear walls. If traditional wooden formwork is used in combination with steel pipes for reinforcement, the construction difficulty is large, and even construction cannot be carried out. When using extruded polystyrene boards embedded between the shear walls at the deformation joint, since it is impossible to ensure the synchronous pouring of concrete on both sides of the shear wall or the synchronous pouring cannot achieve uniform and symmetric pouring, the concrete of one side of the shear wall squeezes the extruded polystyrene board and tilts to the other side, and the verticality of the wall cannot be guaranteed, resulting in poor concrete construction quality.
[0003] At the same time, after the concrete pouring is completed, it is impossible to take out the extruded polystyrene board embedded between the two shear walls, and it cannot be recycled. It can only be destructively demolished (destroy the extruded polystyrene board and let its small pieces fall naturally), which has a high cost and cannot meet the requirements of relevant green construction policies. To solve the problem of pouring shear walls at the deformation joint, improve the appearance quality of concrete, reduce construction costs, and reduce environmental pollution, it is necessary to improve the shear wall pouring formwork at the deformation joint. Summary of the Utility Model
[0004] The purpose of the utility model is to provide, in view of the above deficiencies in the construction of pouring shear walls at the deformation joint in the prior art, a shear wall pouring formwork at the deformation joint between building units, which can solve the problem of formwork construction of shear walls at the deformation joint, effectively ensure the quality of concrete pouring, reduce construction costs, save the construction period, and reduce environmental pollution.
[0005] The utility model is realized by the following technical solutions:
[0006] The utility model provides a shear wall pouring formwork at the deformation joint between building units, including a steel formwork and a wooden formwork. The steel formwork is located on the outer side of the shear wall to be poured, and a lifting ring is arranged at the top of the steel formwork. The wooden formwork is located on the inner side of the shear wall to be poured, and the distance between the steel formwork and the wooden formwork is adapted to the thickness of the shear wall to be poured. A plurality of connecting holes corresponding to each other in position are arranged on the steel formwork and the wooden formwork. A plurality of sleeves are arranged between the steel formwork and the wooden formwork, and the distribution positions of the plurality of sleeves are the same as the distribution positions of the plurality of connecting holes. The formwork also includes a plurality of tension bolts, the tension bolts are inserted into the sleeves, and one end of the tension bolt is threadedly connected to the steel formwork, and the other end is connected to the wooden formwork through a fastener.
[0007] As a preferred embodiment of the present utility model, the fastener includes a plurality of vertical steel pipes and main steel pipes distributed in a cross shape. The vertical steel pipes abut against the side of the wooden formwork facing away from the steel formwork, and the main steel pipes are arranged outside the vertical steel pipes. The main steel pipes are pressed against the vertical steel pipes by butterfly clips and nuts provided on the tie rods.
[0008] As a preferred embodiment of the present utility model, a nut corresponding to the specification of the tie rod is fixedly arranged in the connection hole of the steel formwork.
[0009] As a preferred embodiment of the present utility model, both ends of the nut penetrate through the steel formwork along the thickness direction.
[0010] As a preferred embodiment of the present utility model, the connection holes on the steel formwork and the wooden formwork are both distributed in a rectangular array.
[0011] As a preferred embodiment of the present utility model, the distance between the top end of the steel formwork and the adjacent row of connection holes is 300 mm to 320 mm.
[0012] As a preferred embodiment of the present utility model, there are two lifting rings, which are symmetrically distributed at the top end of the steel formwork.
[0013] As a preferred embodiment of the present utility model, the sleeve is a PVC sleeve, and its pipe diameter is adapted to the tie rod.
[0014] As a preferred embodiment of the present utility model, the steel formwork is 30 mm to 35 mm wider than the size of the shear wall to be poured.
[0015] As a preferred embodiment of the present utility model, the steel formwork is 300 mm to 320 mm higher than the floor height size of the shear wall to be poured.
[0016] Compared with the prior art, the present utility model has the following advantages and beneficial effects:
[0017] In the present utility model, by setting the steel formwork and the wooden formwork, when in use, the steel formwork and the wooden formwork are connected by tie rods and fasteners. Since the steel formwork has relatively high self-rigidity, its outside does not need to be reinforced, and only need to be adjusted vertically during installation. After the shear wall construction of one floor is completed, the steel formwork can be lifted to the next floor for installation and use by the tower crane through the lifting rings. Therefore, it can meet the use conditions of narrow deformation joints between building units, effectively ensure the concrete pouring quality, can be repeatedly used, reduce the construction cost, is simple to install and use, can speed up the construction progress, save the construction period, and at the same time reduce environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] To more clearly illustrate the technical solutions of the exemplary embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings. In the drawings:
[0019] Figure 1 Schematic diagram of the installation of the shear wall casting formwork at the deformation joint between building units in the present utility model;
[0020] Figure 2 In the present utility model Figure 1 Partial enlarged schematic diagram;
[0021] Figure 3 Schematic plan view of the steel formwork in the present utility model;
[0022] Figure 4 Schematic side view of the steel formwork in the present utility model.
[0023] Marks in the drawings and corresponding component names:
[0024] 1 - Steel pipe vertical rib, 2 - Steel pipe main rib, 3 - Butterfly clip, 4 - Wooden formwork, 5 - Steel formwork, 6 - Hoisting ring, 7 - Nut, 8 - Tie rod, 9 - Sleeve, 10 - Temporary fixing rod. Detailed implementation manners
[0025] To make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the following will further elaborate on the present utility model in combination with the embodiments and drawings. The illustrative embodiments of the present utility model and their descriptions are only used to explain the present utility model and are not intended to limit the present utility model.
[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the description of the specification, claims and drawings of this application are intended to cover non-exclusive inclusion.
[0027] In the description of the embodiments of this application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity, specific order or primary-secondary relationship of the indicated technical features.
[0028] References to "embodiments" in this document mean that the specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.
[0029] In the description of the embodiments of the present application, the term "and / or" is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: the existence of A, the simultaneous existence of A and B, and the existence of B. Additionally, the character " / " in this document generally indicates an "or" relationship between the associated objects before and after.
[0030] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, in different embodiments, the detailed description of the same components is omitted. It should be understood that the thicknesses, lengths, widths, etc. of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width, etc. of the integrated device, are only for illustrative purposes and should not constitute any limitation to the present application.
[0031] In the description of the embodiments of the present application, the term "plural" refers to two or more (including two). Similarly, "multiple groups" refers to two or more groups (including two groups), and "multiple pieces" refers to two or more pieces (including two pieces), unless otherwise specifically and clearly defined.
[0032] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the embodiments of the present application.
[0033] In the description of the embodiments of the present application, unless otherwise clearly specified and defined, technical terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.
[0034] Please refer to Figures 1 to 4 A shear wall casting template at a deformation joint between building units provided in an embodiment of the present application includes a steel template 5 and a wooden template 4, wherein the steel template 5 is located on the outside of the shear wall to be cast, a hanging ring 6 is provided on the top of the steel template 5, and the wooden template 4 is located on the inside of the shear wall to be cast, and the spacing between the steel template 5 and the wooden template 4 is adapted to the thickness of the shear wall to be cast; a plurality of corresponding connection holes are provided on the steel template 5 and the wooden template 4, a plurality of sleeves 9 are provided between the steel template 5 and the wooden template 4, and the distribution positions of the plurality of sleeves 9 are the same as the distribution positions of the plurality of connection holes; and a plurality of tension screws 8 are also included, wherein the tension screws 8 are passed through the sleeves 9, and one end of the tension screw 8 is threadedly connected to the steel template 5, and the other end is connected to the wooden template 4 through a fastener.
[0035] The steel formwork 5 in this embodiment is processed according to the size of the shear wall at the deformation joint in the design structure drawing, and the spacing of the shear wall tension screws 8 reinforcement in the formwork plan calculation book is used to determine the position of the connection hole on the steel formwork 5, and then the size of the connection hole is determined according to the specifications of the tension screws 8. The steel formwork 5 and the wooden formwork 4 are arranged vertically in parallel, and the axis of the sleeve 9 is perpendicular to the steel formwork 5 and the wooden formwork 4. During installation, the steel formwork 5 is hoisted to the deformation joint, and the wooden formwork 4 is located on the floor slab of the current casting layer. The tension screws 8 are inserted into the connection holes on the wooden formwork 4, the sleeves 9, and the connection holes on the steel formwork 5 in sequence, and the steel formwork 5 and the wooden formwork 4 are connected by fasteners.
[0036] Since the steel formwork 5 has high rigidity, its outer side does not need to be reinforced, and it only needs to be adjusted vertically during installation. After the shear wall construction of one layer is completed, the steel formwork 5 can be lifted to the next layer through the lifting ring 6 by a tower crane for installation and use. Therefore, it can meet the use conditions of narrow deformation joints between building units, effectively ensure the quality of concrete pouring, can be repeatedly used, reduce construction costs, is easy to use and install, can speed up construction progress, save construction time, and reduce environmental pollution.
[0037] According to some embodiments of the present application, the fastener includes a plurality of steel pipe vertical ribs 1 and steel pipe main ribs 2 distributed in a criss-cross shape, the steel pipe vertical ribs 1 rest against the side of the wooden formwork 4 away from the steel formwork 5, the steel pipe main ribs 2 are arranged on the outside of the steel pipe vertical ribs 1, and the steel pipe main ribs 2 are pressed onto the steel pipe vertical ribs 1 by butterfly clips 3 and locking nuts arranged on the tension screws 8.
[0038] When installing the formwork, sleeves 9 are arranged according to the opening positions of the steel formwork 5. The tie rods 8 are successively inserted into the connection holes on the wooden formwork 4, the sleeves 9, and the connection holes on the steel formwork 5. The tie rods 8 are threadedly connected to the steel formwork 5. The inner side of the wooden formwork 4 is singly reinforced by the steel pipe vertical ribs 1 and the steel pipe main ribs 2 in cooperation with the butterfly clips 3. Since the strength and stiffness of the steel formwork 5 meet the calculation requirements, there is no need to set primary and secondary ribs for reinforcement on one side of the steel formwork 5, thus ensuring that the shear walls of the deformation joints between the two building units can be constructed synchronously.
[0039] According to some embodiments of the present application, nuts 7 corresponding to the specifications of the tie rods 8 are fixedly arranged in the connection holes of the steel formwork 5. Specifically, multiple connection holes can be first processed on the steel formwork 5, and then the nuts 7 are welded and fixed in the connection holes. The nuts 7 are threadedly connected to the tie rods 8, thereby avoiding directly processing threaded holes on the steel formwork 5.
[0040] Since the deformation joint between the two building units is relatively narrow, and the steel formwork 5 needs to have a certain self-thickness, to prevent the positions of the tie rods 8 of the two building units from conflicting with each other during use, the connection holes opened on the two steel formworks 5 used on both sides of the deformation joint between the two building units need to be staggered up and down by 50 mm, which can further adapt to the use under the working conditions of the narrow deformation joint.
[0041] According to some embodiments of the present application, both ends of the nut 7 penetrate through the steel formwork 5 along the thickness direction. Specifically, the axis of the nut 7 is perpendicular to the steel formwork 5, and the outer diameter of the nut 7 is adapted to the connection hole, facilitating peripheral welding and fixing after the nut 7 is inserted into the connection hole. The dimensions of the two ends of the nut 7 protruding from both sides of the steel formwork 5 can be different, that is, one end of the nut 7 protrudes more from one side of the steel formwork 5, and the other end of the nut 7 protrudes less from the other end of the steel formwork 5.
[0042] According to some embodiments of the present application, the connection holes on the steel formwork 5 and the wooden formwork 4 are both distributed in a rectangular array. Specifically, when processing the steel formwork 5, the distribution positions and spacings of the connection holes need to be determined according to calculations.
[0043] According to some embodiments of the present application, the distance between the top end of the steel formwork 5 and the adjacent row of connection holes is 300 mm. To facilitate the temporary stability of the steel formwork 5 during installation, holes are opened at a position 300 mm from the upper end of the steel formwork 5. One is to reinforce the steel formwork 5, and at the same time, when installing the steel formwork 5 on the next layer, the tie rods 8 or steel bars are passed through this hole to form the temporary fixing rods 10, which can temporarily stabilize the steel formwork 5 and prevent the formwork from shaking.
[0044] According to some embodiments of the present application, the number of the lifting rings 6 is two, and they are symmetrically distributed at the top end of the steel formwork 5. To facilitate the hoisting of the steel formwork 5, two HPB300 lifting rings 6 with a diameter of 12 mm need to be welded at the top end of the steel formwork 5, which are used to lift the steel formwork 5 to the upper construction floor by the tower crane using the two lifting rings 6 after form removal. The two lifting rings 6 are symmetrically distributed. Assuming the width of the steel formwork 5 is L, the distance between the two lifting rings 6 is L / 2, and the distance between the two lifting rings 6 and the edge of the steel formwork 5 is L / 4.
[0045] According to some embodiments of the present application, the casing 9 is a PVC casing 9, and its pipe diameter is adapted to the tie rod 8. Since the casing 9 remains in the shear wall after pouring, using the PVC casing 9 is convenient for production and manufacturing, and the construction cost is low.
[0046] According to some embodiments of the present application, the steel formwork 5 is 30 mm wider than the size of the shear wall to be poured. To facilitate the effective fixation of the end of the shear wall, when the steel formwork 5 is processed, the steel formwork 5 needs to be about 30 mm wider than the size of the shear wall (15 mm exposed on one side, which is the thickness of the side formwork 4).
[0047] According to some embodiments of the present application, the steel formwork 5 is 300 mm higher than the floor height size of the shear wall to be poured. By setting the height of the steel formwork 5 as the floor height + 300 mm, where 250 mm is used for the temporary fixation of the steel formwork 5, and 50 mm is used for being higher than the floor surface to facilitate the tower crane to hoist and lift the steel formwork 5 to the next floor for construction after form removal).
[0048] The construction process flow using this formwork is as follows: 1) Process the steel formwork 5; 2) Conduct the concealed acceptance of the steel bars; 3) Install and reinforce the formwork: Hoist the steel formwork 5 to the construction site by the tower crane, and set the PVC casing 9 according to the opening position of the steel formwork 5; The tie rod 8 passes through the PVC casing 9 embedded in the shear wall by the formwork 4 and is tightened into the nut 7 welded on the steel formwork 5, and the inner formwork 4 is singly reinforced by the steel pipe vertical ribs 1 and the steel pipe main ribs 2 in cooperation with the butterfly clips 3; 4) Check the verticality and flatness of the steel formwork 5; 5) Pour the concrete of the shear wall; 6) Remove the formwork; 7) After the concealed acceptance of the steel bars on the next floor is qualified, lift the steel formwork 5 to the next floor for installation by the tower crane.
[0049] The present application has at least the following features: 1) Good construction quality: It can effectively ensure the quality of concrete pouring and improve the visual effect; 2) Convenient and fast construction: The steel formwork 5 is prefabricated in the factory in advance. During construction, it only needs to be hoisted to the construction site by a vertical transportation device (tower crane), and then integrally lifted and installed between floors; 3) Saving construction costs: The steel formwork 5 is prefabricated and formed in advance and can be reused repeatedly. A large amount of construction time is saved during reinforcement, the work efficiency of operators is improved, and the purpose of cost saving is also achieved; 4) Saving the construction period: While ensuring the construction quality, the handover of the working face is accelerated and the construction period is shortened; 5) Avoiding environmental pollution caused by a large amount of wood chips or extruded polystyrene boards.
[0050] It should be noted that the stiffness of the steel formwork 5 needs to meet the construction requirements. At the same time, the number of vertical steel bars 1 and main steel bars 2 of the steel pipe placed on the inner side of the shear wall should meet the construction requirements, and the verticality and wall thickness of the steel formwork 5 side are controlled by checking the inner formwork 4. The spacing and diameter of the openings on the steel formwork 5 should be strictly controlled through calculation. The PVC sleeve 9 and the nut 7 extending into the inner side of the steel formwork 5 should be tightened to prevent leakage of slurry and make it difficult to remove the steel formwork 5.
[0051] The specific implementation manners described above further elaborate on the purpose, technical solutions, and beneficial effects of the present utility model. It should be understood that the above description is only the specific implementation manners of the present utility model and is not used to limit the protection scope of the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A shear wall casting template at the deformation joint between building units, characterized in that: It includes a steel formwork and a wooden formwork, wherein the steel formwork is located on the outside of the shear wall to be cast, a hanging ring is provided on the top of the steel formwork, and the wooden formwork is located on the inside of the shear wall to be cast, and the spacing between the steel formwork and the wooden formwork is adapted to the thickness of the shear wall to be cast; a plurality of corresponding connecting holes are provided on the steel formwork and the wooden formwork, a plurality of sleeves are provided between the steel formwork and the wooden formwork, and the distribution positions of the plurality of sleeves are the same as the distribution positions of the plurality of connecting holes; it also includes a plurality of tension screws, wherein the tension screws are passed through the sleeves, and one end of the tension screws is threadedly connected to the steel formwork, and the other end is connected to the wooden formwork through a fastener.
2. The shear wall casting template at the deformation joint between building units according to claim 1 is characterized in that: The fasteners include a plurality of steel pipe vertical ribs and steel pipe main ribs distributed in a crisscross pattern, the steel pipe vertical ribs abutting against a side of the wooden formwork away from the steel formwork, the steel pipe main ribs being arranged on the outside of the steel pipe vertical ribs, and the steel pipe main ribs being pressed against the steel pipe vertical ribs by butterfly clips and nuts arranged on the tension screws.
3. The shear wall casting template at the deformation joint between building units according to claim 1 or 2, characterized in that: Nuts corresponding to the specifications of the tension screws are fixedly arranged in the connecting holes of the steel template.
4. The shear wall casting template at the deformation joint between building units according to claim 3 is characterized in that: Both ends of the nut penetrate the steel template along the thickness direction.
5. The shear wall casting template at the deformation joint between building units according to claim 1 or 2, characterized in that: The connection holes on the steel formwork and the wooden formwork are distributed in a rectangular array.
6. The shear wall casting template at the deformation joint between building units according to claim 5 is characterized in that: The distance between the top end of the steel template and an adjacent row of connection holes is 300 mm to 320 mm.
7. The shear wall casting template at the deformation joint between building units according to claim 1 or 2, characterized in that: There are two hanging rings, which are symmetrically distributed on the top of the steel formwork.
8. The shear wall casting template at the deformation joint between building units according to claim 1 or 2, characterized in that: The sleeve is a PVC sleeve, and its diameter is matched with the tension screw.
9. The shear wall casting template at the deformation joint between building units according to claim 1 or 2, characterized in that: The steel formwork is 30 mm to 35 mm wider than the size of the shear wall to be cast.
10. The shear wall casting template at the deformation joint between building units according to claim 1 or 2, characterized in that: The steel formwork is 300 mm to 320 mm higher than the layer height of the shear wall to be cast.