A prefabricated exterior wall bridge waterproof and shear-resistant structure and construction method

Abstract

The present invention discloses an assembled exterior wall bridge waterproof and shear-resistant structure and construction method, comprising an exterior wall body and precast concrete components, wherein the precast concrete components include an upper precast component and a lower precast component, wherein the upper precast component is inlaid with a receiving groove on the side near the lower edge, and the lower precast component is inlaid with a closing groove on the side near the upper edge, wherein the receiving groove and the closing groove are located in the same vertical plane, and a waterproof fiber cloth is provided inside the receiving groove, with one end of the waterproof fiber cloth located inside the closing groove; a shear key is provided between the upper precast component and the lower precast component, wherein a through hole is provided in the middle of the shear key, and a grouting channel is provided above the shear key on the upper precast component. The present invention effectively enhances the anti-seepage ability at the concrete connection interface, enhances the vertical component connection and the horizontal shear resistance, and has a simple construction method, which is convenient for large-scale application.

Description

Technical Field

[0001] The present invention belongs to the technical field of construction engineering, and in particular relates to an assembled exterior wall spanning waterproof and shear-resistant structure and a construction method. Background Art

[0002] From an architectural perspective, the components that enclose a building and form the boundary between indoor and outdoor areas are called exterior walls. The exterior walls of buildings have the functions of bearing certain loads, blocking wind and rain, keeping warm and insulating, preventing noise, and ensuring fire safety.

[0003] At present, leakage of building exterior walls is a common quality problem that is difficult to cure. Especially when prefabricated exterior walls are gradually used in large quantities, quality control of leakage risks at joints has become the key to exterior wall waterproofing. Summary of the Invention

[0004] The object of the present invention is to provide a prefabricated exterior wall bridge waterproof and shear-resistant structure and a construction method to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A prefabricated exterior wall bridge waterproof and shear-resistant structure, comprising an exterior wall and precast concrete components, wherein the precast concrete components comprise an upper precast component and a lower precast component, the upper precast component and the lower precast component being integrally cast, the upper precast component having a side near the lower edge inlaid with a receiving groove, and the lower precast component having a side near the upper edge inlaid with a closing groove, the receiving groove and the closing groove being located in the same vertical plane, a waterproof fiber cloth being disposed within the receiving groove, one end of the waterproof fiber cloth being located within the closing groove;

[0007] A shear key is provided between the upper prefabricated component and the lower prefabricated component, a through hole is provided in the middle of the shear key, and a grouting channel is provided above the shear key in the upper prefabricated component.

[0008] Preferably, the depth of the receiving groove and the closing groove is between 3-4 cm.

[0009] Preferably, the bottom of the shear key is installed on the surface of the lower prefabricated component through anchor bars.

[0010] A construction method for an assembled exterior wall bridge waterproof and shear-resistant structure, characterized by comprising the following steps:

[0011] Step 1: During the production stage of prefabricated concrete components, a bridging waterproof and shear-resistant structure is provided. A closing groove is installed on the upper edge of the lower prefabricated component, and a receiving groove is installed on the lower edge of the upper prefabricated component. A waterproof fiber cloth is installed between the receiving groove and the closing groove. The steel bars of the receiving groove and the closing groove are fixed to the lower prefabricated component or the upper prefabricated component. The shear key is installed on the surface of the lower prefabricated component. The vertical main reinforcement reserved in the lower prefabricated component is fixed through the through hole of the shear key. After the prefabricated concrete component is poured, the receiving groove, the closing groove, the shear key and the concrete are integrally formed.

[0012] Step 2: During the construction phase of the exterior wall prefabricated components, the shear key is installed and the cross-connection waterproofing is performed. A mortar layer is laid between the lower prefabricated components and the lower prefabricated components. When the upper prefabricated components are hoisted, the shear key is inserted under the grouting channel of the upper prefabricated components. After the vertical main reinforcement sleeve is grouting and connected, the connected space in the grouting channel is sealed. The primer is applied between the bottom of the receiving groove and the lower edge of the closing groove. After curing, the waterproof fiber cloth in the receiving groove is pulled out and fixed to the side of the concrete prefabricated component with adhesive and closed and fixed in the closing groove. When the upper prefabricated components are connected in the horizontal direction by cast-in-situ, the receiving groove and the closing groove can be welded to form a horizontal connecting groove. The waterproof fiber cloth in the cast-in-situ area is laid by external pasting, and the two sides are 5CM wide from the cast-in-situ area and are connected to form a whole by adhesive at the overlap.

[0013] Step 3: After applying the interface agent on the outer side of the waterproof fiber cloth and the storage groove, the waterproof mortar layer, the insulation layer and the decorative layer of the outer wall are constructed to form an enhanced waterproof and shear-resistant outer wall.

[0014] Technical effects and advantages of the present invention:

[0015] It effectively enhances the impermeability of the concrete connection interface, strengthens the vertical component connection and horizontal shear resistance, and the construction method is simple, which is convenient for large-scale application. In addition, the vertical concrete component connection is superimposed with waterproof fiber cloth with high tensile strength and weather resistance, which further improves the connection reliability and weather resistance of the prefabricated components. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the main view of the present embodiment;

[0017] Figure 2 This is a logical structure diagram of this embodiment.

[0018] In the figure: 1. Exterior wall; 2. Precast concrete components; 3. Upper precast components; 4. Lower precast components; 5. Storage groove; 6. Closing groove; 7. Waterproof fiber cloth; 8. Shear key; 9. Grouting channel. DETAILED DESCRIPTION

[0019] The following is a combination of the embodiments of the present invention Figure 1 and Figure 2 , the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. The specific embodiments described here are only used to explain the present invention and are not used to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] Example:

[0021] like Figure 1-Figure 2 As shown, the present invention provides an assembled exterior wall bridge waterproof and shear-resistant structure, including an exterior wall 1 and a prefabricated concrete component 2. The prefabricated concrete component 2 includes an upper prefabricated component 3 and a lower prefabricated component 4. The side of the upper prefabricated component 3 near the lower edge is inlaid with a receiving groove 5, and the side of the lower prefabricated component 4 near the upper edge is inlaid with a closing groove 6. The receiving groove 5 and the closing groove 6 are located in the same vertical plane. A waterproof fiber cloth 7 is provided inside the receiving groove 5, and one end of the waterproof fiber cloth 7 is located inside the closing groove 6.

[0022] A shear key 8 is provided between the upper prefabricated component 3 and the lower prefabricated component 4. A through hole is opened in the middle of the shear key 8. A grouting channel 9 is provided above the shear key 8 of the upper prefabricated component 3. The depth of the receiving groove 5 and the closing groove 6 is between 3-4 cm. The bottom of the shear key 8 is installed on the surface of the lower prefabricated component 4 through anchor bars. First, it serves as a water-stopping ridge to enhance the waterproof effect. Second, it fixes the lower reserved steel bars to ensure the accurate connection position of the vertical steel bars in the later stage. Third, it is inserted into the grouting channel 9 to play a horizontal shearing role, further ensuring the stable connection and weather resistance of the prefabricated components.

[0023] A construction method for an assembled exterior wall bridge waterproof and shear-resistant structure comprises the following steps:

[0024] Step 1: During the production stage of prefabricated concrete components, a cross-connected waterproof and shear-resistant structure is set up. A closing groove 6 is installed on the upper edge of the lower prefabricated component 4, and a receiving groove 5 is installed on the lower edge of the upper prefabricated component 3. The receiving groove 5 is 8 cm away from the lower edge of the upper prefabricated component 3 and has a depth of 3-4 cm. The closing groove 6 is 8 cm away from the upper edge of the upper prefabricated component 3 and has a depth of 3-4 cm. In order to avoid contamination of the receiving groove 5 and the waterproof cloth, the outside of the receiving groove 5 and the waterproof cloth are sealed with plastic film, and a waterproof fiber cloth 7 is installed between the receiving groove 5 and the closing groove 6. The steel skeleton of the receiving groove 5 and the closing groove 6 is fixed on the lower prefabricated component 4 or the upper prefabricated component 3. A shear key 8 is installed on the surface of the lower prefabricated component 4. The vertical main reinforcement reserved in the lower prefabricated component 4 is fixed through the through hole of the shear key 8. After the concrete prefabricated component 2 is poured, the receiving groove 5, the closing groove 6, and the shear key 8 are integrally formed with the concrete.

[0025] Step 2: Installation of shear keys and cross-connection waterproofing during the construction phase of the exterior wall prefabricated components. A mortar layer is laid between the lower prefabricated component 4 and the upper prefabricated component 3. When the upper prefabricated component 3 is hoisted, the shear key 8 is inserted under the grouting channel 9 of the upper prefabricated component 3. After the vertical main reinforcement sleeve is grouting connected, the connected space in the grouting channel 9 is sealed, and the primer is applied between the bottom of the receiving groove 5 and the lower edge of the closing groove 6. After solidification, the waterproof fiber cloth 7 in the receiving groove 5 is pulled out, and is fixed to the side of the concrete prefabricated component 2 with adhesive and closed and fixed in the closing groove 6. When the upper prefabricated component 3 is horizontally connected by cast-in-place, the receiving groove 5 and the closing groove 6 can be welded to form a horizontal connecting groove. The waterproof fiber cloth 7 in the cast-in-place area is laid by external pasting, and the width of the two sides is 5CM within the cast-in-place area and is connected to form a whole with adhesive at the overlap.

[0026] Step 3: Apply interface agent on the outer side of the waterproof fiber cloth 7 and the storage groove 5, and construct the waterproof mortar layer, insulation layer and decorative layer of the outer wall 1 to form an enhanced waterproof and shear-resistant outer wall.

[0027] In summary, this invention effectively enhances the impermeability of concrete joint interfaces, strengthens vertical component connections, and strengthens horizontal shear resistance. Its simple construction method facilitates large-scale application. Furthermore, the application of high-tensile-strength and weather-resistant fiber cloth at the vertical concrete component joints further improves the reliability and weather resistance of the assembled component connections.

[0028] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An assembled exterior wall bridge waterproof and shear-resistant structure, comprising an exterior wall and prefabricated concrete components, characterized by: The prefabricated concrete component includes an upper prefabricated component and a lower prefabricated component. The side of the upper prefabricated component close to the lower edge is inlaid with a receiving groove, and the side of the lower prefabricated component close to the upper edge is inlaid with a closing groove. The receiving groove and the closing groove are located in the same vertical plane. A waterproof fiber cloth is provided inside the receiving groove, and one end of the waterproof fiber cloth is located inside the closing groove. A shear key is provided between the upper prefabricated component and the lower prefabricated component, a through hole is provided in the middle of the shear key, and a grouting channel is provided above the shear key in the upper prefabricated component; Wherein, the depth of the receiving groove and the closing groove is between 3cm and 4cm.

2. The assembled exterior wall bridge waterproof and shear-resistant structure according to claim 1, characterized in that: The bottom of the shear key is installed on the surface of the lower prefabricated component through anchor bars.

3. A construction method for the assembled exterior wall bridge waterproof and shear resistant structure according to any one of claims 1 to 2, characterized in that: The following steps are involved: Step 1: During the production stage of prefabricated concrete components, a bridging waterproof and shear-resistant structure is provided. A closing groove is installed on the upper edge of the lower prefabricated component, a receiving groove is installed on the lower edge of the upper prefabricated component, a waterproof fiber cloth is installed in the receiving groove, the steel skeletons of the receiving groove and the closing groove are fixed to the lower prefabricated component or the upper prefabricated component, the shear key is installed on the surface of the lower prefabricated component, and the vertical main reinforcement reserved in the lower prefabricated component is fixed through the through hole of the shear key. After the prefabricated concrete component is poured, the receiving groove, closing groove, shear key and concrete are integrally formed; Step 2: During the construction phase of the exterior wall prefabricated components, the shear key is installed and the cross-connection waterproofing is performed. A mortar layer is laid between the upper prefabricated component and the lower prefabricated component. When the upper prefabricated component is hoisted, the shear key is inserted under the grouting channel of the upper prefabricated component. After the vertical main reinforcement sleeve is grouting and connected, the connected space in the grouting channel is sealed. The primer is applied between the bottom of the receiving groove and the lower edge of the closing groove. After curing, the waterproof fiber cloth in the receiving groove is pulled out and fixed to the side of the concrete prefabricated component with adhesive and closed and fixed in the closing groove. When the upper prefabricated component is connected in situ horizontally, the receiving groove and the closing groove are welded to form a horizontal connecting groove. The waterproof fiber cloth in the cast-in-situ area is laid in an external pasting manner, with a width of 5CM on both sides of the cast-in-situ area and connected to form a whole with adhesive at the overlap. Step 3: After applying the interface agent on the outer side of the waterproof fiber cloth and the storage groove, the waterproof mortar layer, the insulation layer and the decorative layer of the outer wall are constructed to form an enhanced waterproof and shear-resistant outer wall.

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