Split bolt and thermal insulation wallboard prefabricated outer wall cast-in-situ abutted seam construction structure

Abstract

The utility model discloses a split bolt and heat preservation wallboard prefabricated outer wall cast-in-place abutted seam construction structure, the split bolt comprises a water stop piece, a detachable screw, a movable nut and a fastening nut, the water stop piece comprises a water stop plate and internal thread sleeves, and one ends of the two internal thread sleeves are connected with the side faces of the two sides of the water stop plate; one ends of the two detachable screws are screwed in the two internal thread sleeves, and the other ends of the two detachable screws are sequentially screwed with the movable nut and the fastening nut; according to the cast-in-place abutted seam construction structure for the prefabricated outer wall of the thermal insulation wallboard, split bolts penetrate through a cast-in-place concrete wall connecting section and formworks on the two sides of the cast-in-place concrete wall connecting section, and water stopping pieces are arranged in the cast-in-place concrete wall connecting section, so that the permeation path of water can be increased; after the construction of the cast-in-place concrete connecting section is finished and the detachable screw rod of the split bolt is detached, no hole penetrating through the indoor space and the outdoor space exists; foaming polyurethane pipe holes are supplemented, the outer surface is protected by cement mortar, and rainwater on the outer wall is prevented from permeating into a room through bolt holes which are not tightly blocked.

Description

Technical Field

[0001] This utility model belongs to the field of building construction technology, and in particular relates to a construction structure for cast-in-place joints of precast exterior walls using tie bolts and insulated wall panels. Background Technology

[0002] High-precision insulated prefabricated exterior walls are a type of prefabricated building exterior wall. Adjacent prefabricated exterior walls need to be connected into a whole by cast-in-place concrete joints. During the construction of the cast-in-place joints, the formwork needs to be fixed with tie bolts.

[0003] The existing construction method is to use ordinary tie bolts that penetrate the precast wall. After the tie bolts are removed, a hole will be formed that connects the interior and exterior. Then, the hole is sealed by injecting polyurethane foam waterproof material, and the outer surface is protected with cement mortar to protect the polyurethane foam.

[0004] As can be seen, in the traditional construction process of cast-in-place concrete exterior walls, bolt holes need to be sealed with cement mortar before the exterior wall is coated with three layers of polyurethane waterproofing to ensure no leakage. However, because the precast exterior walls of precision-insulated wall panels have an outer insulation board, it is impossible to seal the tie bolt holes with cement mortar or apply waterproof polyurethane. Therefore, the only option is to inject foamed polyurethane. However, there is no effective method to test the construction quality after the foamed polyurethane is applied. As the building ages, defects in the foaming process can lead to leaks due to rainwater seepage. Summary of the Invention

[0005] The purpose of this utility model is to provide a construction structure for the precast exterior wall joint of tie rods and insulated wall panels, solving the following problems existing in the prior art: It is impossible to seal the tie rod holes with cement mortar or apply waterproof polyurethane to seal them; only polyurethane foam can be injected. However, there is no effective method to test the construction quality after the polyurethane foam is applied, leading to the risk of rainwater leakage due to defective foam holes as the building ages. This new structure increases the water penetration path, ensuring that after the cast-in-place concrete connection section is completed and the tie rods are removed, there are no holes connecting the interior and exterior. Furthermore, the addition of polyurethane foam pipes and cement mortar protection on the outer surface better prevents rainwater from seeping into the interior through poorly sealed bolt holes.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] In a first aspect, this utility model provides a tie bolt, including a water-stopping component, two detachable screws, two movable nuts, and two fastening nuts. The water-stopping component includes a water-stopping plate and two internally threaded sleeves. One end of each of the two internally threaded sleeves is connected to one of the two sides of the water-stopping plate. One end of each of the two detachable screws is screwed into the other end of each of the two internally threaded sleeves, and the other end is screwed with one of the movable nuts and one of the fastening nuts in sequence.

[0008] The tie bolt of this utility model has a water-stop component embedded in the connection section of the cast-in-place concrete wall and a waterproof function through the water-stop plate; the detachable screw rod is used to detachably penetrate the template and the precast exterior wall of the insulation wall panel; the movable nut is used to position the template; the fastening nut is used to prevent the movable nut from loosening; and the detachable screw rod is fixed to the water-stop component.

[0009] Preferably, one end face of each of the two internally threaded sleeves is connected to the center position of the two sides of the waterstop plate.

[0010] Preferably, the waterstop plate is a square steel plate.

[0011] Preferably, the two ends of the detachable screw are respectively provided with external threads.

[0012] Preferably, the fastening nut has an end face.

[0013] Secondly, this utility model provides a construction structure for cast-in-place joints of precast exterior walls with insulated wall panels, including a cast-in-place concrete wall connection section, insulated wall panels, at least two precast exterior walls with insulated wall panels, at least one pair of templates, and tie bolts as described in the first aspect of this utility model. Adjacent precast exterior walls with insulated wall panels are connected by the cast-in-place concrete wall connection section and the insulated wall panels, respectively. The insulated wall panels are disposed on the outer side of the cast-in-place concrete wall connection section. The templates are distributed in pairs on both sides of the cast-in-place concrete wall connection section and the insulated wall panels, and each pair of templates is connected by the tie bolts. The tie bolts penetrate each pair of templates and the precast exterior walls with insulated wall panels. The water-stopping element is embedded in the precast exterior walls with insulated wall panels. Each pair of templates contacts the two movable nuts of each tie bolt, and the movable nuts contact the fastening nuts.

[0014] The precast exterior wall splicing construction structure of this utility model, using the tie bolts described in the first aspect of this utility model, has two detachable screws respectively installed in the two sides of the precast exterior wall of the insulated wall panel, and respectively penetrating the template; the exposed parts of the detachable screws at both ends of the tie bolts are sequentially screwed into the movable nut and the fastening nut, which facilitates the firm fixation of the detachable screws to the water-stopping component; and increases the water penetration path, so that when the cast-in-place concrete connection section is completed and the detachable screws of the tie bolts are removed, there are no holes penetrating between the interior and exterior; subsequently, polyurethane foam pipe holes are added, and the outer surface is protected with cement mortar, which can better prevent rainwater from the exterior wall from seeping into the interior through poorly sealed bolt holes.

[0015] Preferably, each pair of templates is connected by at least two tie bolts.

[0016] The construction structure for precast exterior wall splicing joints using tie bolts and insulated wall panels provided by this utility model has the following beneficial effects:

[0017] The present invention provides a water-stopping component for the tie bolt. This water-stopping component forms a non-through structure and, together with the detachable screw, movable nut, and fastening nut, forms a connection device that is easy to install and disassemble.

[0018] This utility model's precast exterior wall splicing construction structure for insulated wall panels utilizes tie bolts that penetrate the cast-in-place concrete wall connection section and the formwork system on both sides. Furthermore, the water-stopping components of the tie bolts are placed inside the cast-in-place concrete wall connection section, increasing the water penetration path. This ensures that after the cast-in-place concrete connection section is completed and the detachable bolts of the tie bolts are removed, there are no holes connecting the interior and exterior. The addition of polyurethane foam pipes and cement mortar protection on the outer surface further prevents rainwater from seeping into the interior through poorly sealed bolt holes. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a tie bolt provided in one embodiment of the present invention.

[0020] Figure 2 This is a structural schematic diagram of a water-stop component for a tie bolt provided in one embodiment of this utility model.

[0021] Figure 3 This is a front view of the movable nut of a tie bolt provided in an embodiment of this utility model.

[0022] Figure 4 This is a side view of the movable nut of a tie bolt provided in an embodiment of the present invention.

[0023] Figure 5This is a front view of the fastening nut for a tie bolt provided in an embodiment of this utility model.

[0024] Figure 6 This is a side view of the fastening nut of a tie bolt provided in one embodiment of the present invention.

[0025] Figure 7 This is a schematic diagram of the construction structure of the precast exterior wall splicing joint of the thermal insulation wall panel provided in one embodiment of the present utility model.

[0026] Figure reference numerals:

[0027] 1. Waterstop component; 101. Waterstop plate; 102. Internal threaded sleeve; 2. Detachable screw; 3. Adjustable nut; 4. Fastening nut; 401. End face; 5. Cast-in-place concrete wall connection section; 6. Insulated wall panel; 7. Precast exterior wall with insulated wall panel; 8. Formwork. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Example

[0029] Please refer to Figures 1 to 6 This embodiment provides a tie bolt, including a water-stopping component 1, two detachable screw rods 2, two movable nuts 3, and two fastening nuts 4. The water-stopping component 1 includes a water-stopping plate 101 and two internally threaded sleeves 102. One end of the two internally threaded sleeves 102 is connected to the two sides of the water-stopping plate 101 respectively. One end of the two detachable screw rods 2 is screwed into the other end of the two internally threaded sleeves 102 respectively, and the other end is screwed with a movable nut 3 and a fastening nut 4 in sequence.

[0030] In this embodiment, the tie bolt has an internally threaded sleeve 102, a detachable screw 2, a movable nut 3, and a fastening nut 4 on each side of the waterstop plate 101. The inner ends of the two internally threaded sleeves 102 are connected to the waterstop plate 101, and the inner end of the detachable screw 2 on each side is screwed into the outer end of the internally threaded sleeves 102 on both sides, so that the inner ends of the detachable screw 2 on both sides are connected to the waterstop component 1. The movable nut 3 and the fastening nut 4 on each side are screwed into the outer end of the detachable screw 2 on that side, and the fastening nut 4 is located outside the movable nut 3. Here, "inner side" refers to... Figure 1 The side shown near the waterstop plate 101, pointing outwards. Figure 1 The side away from the waterstop 101 shown in the diagram.

[0031] The waterstop 1 is embedded inside the precast exterior wall 7 of the insulated wall panel. The precast exterior wall 7 can be a precast concrete wall panel. The waterstop plate 101 of the waterstop 1 provides waterproofing and water-proofing. By connecting two internally threaded sleeves 102 to both sides of the waterstop plate 101, the waterstop 1 forms a non-through connection, increasing the water penetration path and better preventing rainwater from seeping into the room through poorly sealed bolt holes. The movable nut 3 is used to position the formwork 8 of the cast-in-place concrete connection section 5, and the fastening nut 4 is used to prevent the movable nut 3 from loosening and to fix the detachable screw 2 to the waterstop 1.

[0032] Please refer to the reference. Figure 1 and Figure 2 Specifically, one end face of each of the two internally threaded sleeves 102 is connected to the center position of the two sides of the waterstop plate 101. That is, the inner end faces of the internally threaded sleeves 102 on both sides of the waterstop plate 101 are connected to the center position of the two sides of the waterstop plate 101. The internally threaded sleeves 102 are perpendicular to the waterstop plate 101.

[0033] Specifically, the waterstop plate 101 is set as a square steel plate.

[0034] Specifically, external threads are provided at both ends of the detachable screw 2. That is, external threads are provided at both the inner and outer ends of the detachable screw 2.

[0035] Please refer to the reference. Figure 5 and Figure 6 Specifically, the fastening nut 4 is provided with an end face 401. That is, the outer end of the fastening nut 4 is provided with an end face 401, so that the fastening nut 4 forms a non-through structure with a closed outer end. In this way, the fastening nut 4 can be screwed to the outer end of the detachable screw rod 2 with a wrench, and then the inner end of the detachable screw rod 2 can be screwed into the outer end of the internal thread sleeve 102 on the same side.

[0036] More specific details can be found in the references provided. Figure 1 and Figure 2 The waterstop 1 is integrally formed as a non-through steel bar straight thread connection sleeve structure. The side length of the waterstop plate 101 can be set to 80mm, and the thickness can be set to 20mm. The inner diameter of the internal thread sleeve 102 can be set to 12mm, and the length can be set to 20mm. The detachable screw 2 can be set as a 12mm diameter HRB400 threaded steel bar, with the two ends of the steel bar cut to form external threads.

[0037] Please refer to the reference. Figure 3 and Figure 4 The movable nut 3 is designed with a through hole structure. Example

[0038] Please refer to the reference. Figures 1 to 7This embodiment provides a construction structure for cast-in-place joints of precast exterior walls with insulated wall panels, including a cast-in-place concrete wall connection section 5, an insulated wall panel 6, at least two precast exterior walls with insulated wall panels 7, at least one pair of templates 8, and tie bolts as described in Embodiment 1. Adjacent precast exterior walls with insulated wall panels 7 are connected by the cast-in-place concrete wall connection section 5 and the insulated wall panel 6, respectively. The insulated wall panel 6 is located on the outside of the cast-in-place concrete wall connection section 5. The templates 8 are distributed in pairs on both sides of the cast-in-place concrete wall connection section 5 and the insulated wall panel 6, and each pair of templates 8 is connected by tie bolts. The tie bolts penetrate each pair of templates 8 and the precast exterior wall with insulated wall panels 7. Waterstops 1 are embedded in the precast exterior wall with insulated wall panels 7. Each pair of templates 8 contacts the two movable nuts 3 of each tie bolt, and the movable nuts 3 contact the fastening nuts 4.

[0039] In this embodiment, the precast exterior wall of the thermal insulation wall panel is constructed by setting two detachable bolts 2 of the tie bolts as described in Embodiment 1 inside the two sides of the precast exterior wall 7 of the thermal insulation wall panel, and passing through the templates 8 on both sides of the precast exterior wall 7 of the thermal insulation wall panel; and screwing the exposed parts at both ends of the tie bolts into the movable nuts 3 and the fastening nuts 4 in sequence, thereby positioning the template 8 of the cast-in-place concrete connection section 5 by the movable nuts 3, and fastening the position of the movable nuts 3 by the fastening nuts 4, which facilitates the firm fixing of the detachable bolts 2 to the waterstop 1.

[0040] like Figure 7 As shown, specifically, each pair of templates 8 is connected by at least two tie bolts.

[0041] Specifically, the water-stop component 1 can be pre-embedded in the middle of the prefabricated exterior wall 7 of the insulated wall panel to improve the waterproofing effect.

[0042] The prefabricated exterior wall 7 with thermal insulation wall panels can be configured with two layers, inner and outer, which are in contact with each other. The two inner layers of prefabricated exterior wall 7 are connected by a cast-in-place concrete wall connection section 5, and the two outer layers of prefabricated exterior wall 7 are connected by thermal insulation wall panels 6. The water-stop component 1 can be pre-embedded in the middle position of the inner prefabricated exterior wall 7; thus, while improving the waterproof effect, it is also beneficial to improve the thermal insulation effect.

[0043] The insulation wall panel 6 is installed on the outside of the cast-in-place concrete wall connection section 5. Each pair of formwork 8 is installed on the outside of the insulation wall panel 6 and the inside of the cast-in-place concrete wall connection section 5, respectively, to facilitate the construction of the precast exterior wall splicing structure with insulation wall panels. Here, "inside" refers to... Figure 2 The right-hand direction shown in the diagram, the outer direction refers to... Figure 1 The left direction is shown in the diagram.

[0044] The above embodiments are merely illustrative examples and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

[0045] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other.

[0046] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to has a specific orientation, or is constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0047] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A tension rod, characterized by, The utility model provides a water stop, two detachable screw rods, two movable nuts and two fastening nuts, the water stop comprises a water stop plate and two internally threaded sleeves, one end of the two internally threaded sleeves is connected with the two side surfaces of the water stop plate respectively, one end of the two detachable screw rods is screwed in the other end of the two internally threaded sleeves respectively, and the other end is screwed with one movable nut and one fastening nut in sequence respectively.

2. The opposed bolt according to claim 1, characterized by, One end surface of the two internally threaded sleeves is connected with the center position of the two side surfaces of the water stop plate respectively.

3. The opposed bolt according to claim 2, characterized by, The water stop plate is arranged as a square steel plate.

4. The opposed bolt of claim 1, wherein The two ends of the detachable screw rod are provided with external threads respectively.

5. The tie bolt according to any one of claims 1 to 4, characterized in that The fastening nut is provided with an end surface.

6. A construction structure of a prefabricated thermal insulation wallboard cast-in-situ outer wall joint, characterized in that, The utility model provides a cast-in-situ concrete wall connecting section, a thermal insulation wall plate, at least two thermal insulation wall plate prefabricated outer walls, at least one pair of formworks and the anchor bolt of any one of claims 1-5, the thermal insulation wall plate is connected through the cast-in-situ concrete wall connecting section and the thermal insulation wall plate between adjacent thermal insulation wall plate prefabricated outer walls respectively, and the thermal insulation wall plate is arranged on the outer side of the cast-in-situ concrete wall connecting section; the formwork is distributed on the two sides of the cast-in-situ concrete wall connecting section and the thermal insulation wall plate in pairs, the formwork is connected through the anchor bolt between every pair of the formwork; the anchor bolt penetrates every pair of the formwork and the thermal insulation wall plate prefabricated outer wall, and the water stop is embedded in the thermal insulation wall plate prefabricated outer wall; every pair of the formwork is in contact with two movable nuts of every anchor bolt respectively, and the movable nut is in contact with the fastening nut respectively.

7. The prefabricated outer wall cast-in-place joint construction structure of the thermal insulation wall panel according to claim 6, characterized in that, Every pair of the formwork is connected through at least two anchor bolts.

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