External wall panel joint structure

Abstract

The external wall panel joint structure comprises a heat preservation strip and a sealing strip, the heat preservation strip and the sealing strip are arranged in a joint gap, the heat preservation strip is used for being connected with a cast-in-place concrete layer, the sealing strip is arranged on the side, away from the concrete layer, of the heat preservation strip, drainage cavities are formed between the sealing strip and the heat preservation strip at intervals, and the sealing strip is connected to the inner wall of the joint gap through a base. When the two prefabricated slabs are connected, the heat preservation strips are placed in the joint gaps, so that the heat preservation strips and the sandwich heat preservation layers in the prefabricated slabs form a whole, the heat preservation effect is improved, pouring of the cast-in-place concrete layers is facilitated, the sides, away from the cast-in-place concrete layers, of the joint gaps are sealed through the sealing belts, operation is convenient, wet operation is reduced, and the construction efficiency is improved. The waterproof effect is improved.

Description

Technical Field

[0001] The present application relates to the field of precast wall panels, and particularly to a joint structure for exterior wall panels. Background Art

[0002] Currently, China is in a critical period of new and old kinetic energy conversion and economic transformation and upgrading. The construction industry needs to closely follow the needs of national development, vigorously enhance the new quality productivity of the construction industry, improve the efficiency and technological content of the construction industry. Prefabricated buildings will become one of the cores of the future development of the construction industry, with an increasing share in various new construction projects, especially for affordable housing projects.

[0003] Refer to Figure 1 , the precast concrete sandwich precast panel in the prior art includes an outer leaf panel 1, a sandwich insulation layer 2 and an inner leaf panel 3. During on-site installation, a joint gap 4 is provided at intervals between two adjacent precast panels. Currently, the waterproof devices used more often include a cast-in-place concrete layer 5 provided inside the joint gap 4, a connection port is opened outside the joint gap 4, and a waterproof adhesive layer 6 is provided at the connection port.

[0004] In view of the above related technologies, when setting the waterproof adhesive layer, it is necessary to apply glue in a wet operation, which has high requirements for manual operation, making it difficult to control the waterproof quality. Utility Model Content

[0005] In order to reduce wet operations and improve the waterproof effect, the present application provides a joint structure for exterior wall panels.

[0006] The joint structure for exterior wall panels provided by the present application adopts the following technical solutions:

[0007] A joint structure for exterior wall panels includes a heat preservation strip and a sealing strip. The heat preservation strip and the sealing strip are arranged in the joint gap. The heat preservation strip is used to connect with the cast-in-place concrete layer. The sealing strip is arranged on the side of the heat preservation strip away from the cast-in-place concrete layer. A drainage cavity is provided at intervals between the sealing strip and the heat preservation strip. The sealing strip is connected to the inner wall of the joint gap through a base. There are two bases. The length direction of the base is consistent with the length direction of the exterior wall panel. The two bases are respectively arranged on the inner walls of the opposite sides of the joint gap. The two ends of the sealing strip are respectively connected to the two bases.

[0008] By adopting the above technical solutions, when two precast panels are connected, a heat preservation strip is placed in the joint gap, so that the heat preservation strip and the sandwich insulation layer in the precast panel form an integral body, thereby improving the heat preservation effect and facilitating the pouring of the cast-in-place concrete layer. The side of the joint gap away from the cast-in-place concrete layer is sealed with a sealing strip, which is more convenient to operate, reduces wet operations, and improves the waterproof effect.

[0009] Optionally, there are two sealing strips, and the two sealing strips are arranged in sequence along the depth direction of the joint gap.

[0010] By adopting the above technical solution, two sealing strips are provided to further reduce the water entering the joint gap and improve the sealing performance of the joint structure.

[0011] Optionally, the two sealing strips are detachably connected to the base. The base is provided with a first installation groove and a second installation groove. The length direction of the first installation groove is consistent with the length direction of the base, and the length direction of the second installation groove is consistent with the length direction of the base. The first installation groove is arranged on one side of the base close to the cast-in-place concrete layer, and the second installation groove is arranged on one side of the base far from the cast-in-place concrete layer. Both ends of one sealing strip are respectively embedded in the two first installation grooves, and both ends of the other sealing strip are respectively embedded in the two second installation grooves.

[0012] By adopting the above technical solution, the two sealing strips are respectively embedded in the first installation groove and the second installation groove. When the sealing strip is damaged and affects the sealing effect of the joint structure, the sealing strip is disassembled and replaced to improve the sealing effect of the sealing strip.

[0013] Optionally, a plurality of convex strips are connected to the inner wall of the first installation groove. The length direction of the convex strips is consistent with the length direction of the first installation groove, and the convex strips are in contact with the sealing strip.

[0014] By adopting the above technical solution, the convex strips are added. When one end of the sealing strip is embedded in the first installation groove, the convex strips are pressed against the sealing strip, so that the sealing strip is stably connected in the first installation groove.

[0015] Optionally, the opening of the first installation groove is inclined towards the side far from the cast-in-place concrete layer.

[0016] By adopting the above technical solution, the opening of the first installation groove is inclined outwards, which is convenient for the installer to install the sealing strip.

[0017] Optionally, the base is connected with a baffle. The length direction of the baffle is consistent with the length direction of the first installation groove. The baffle is slidably connected to the base. One end of the baffle along its width direction covers the opening of the first installation groove. One end of the baffle is used to press the sealing strip into the first installation groove. The baffle is provided with a locking member, and the locking member is used to lock the baffle to the base.

[0018] By adopting the above technical solution, when the sealing strip is embedded in the first installation groove, the baffle moves along the width direction of the first installation groove. When one end of the baffle abuts against the sealing strip, the locking member locks the baffle to the base, so that the sealing strip is stably connected in the first installation groove.

[0019] Optionally, an elastic member is connected to the inner wall of the second installation groove, and the elastic member is used to press the sealing strip against the inner wall of the second installation groove.

[0020] By adopting the above technical solution, when the sealing strip is embedded in the second installation groove, the sealing strip contacts the elastic member, causing the elastic member to deform. The elastic member has elasticity, and it drives the sealing strip to press tightly against the partition plate, thereby stably connecting the sealing strip in the second installation groove.

[0021] Optionally, the sealing strip is made of a water-swellable elastic waterstop.

[0022] By adopting the above technical solution, when the sealing strip comes into contact with water, the sealing strip expands and presses tightly against the first installation groove or the second installation groove, reducing the gap in the first installation groove and the second installation groove and improving the sealing effect of the joint structure.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The joint gap is sealed with a sealing strip on the side away from the cast-in-place concrete layer. The operation is relatively convenient, and wet work is reduced, improving the waterproof effect;

[0025] 2. The two sealing strips are respectively embedded in the first installation groove and the second installation groove. When the sealing strip is damaged and affects the sealing effect of the joint structure, the sealing strip is disassembled and replaced, thereby improving the sealing effect of the sealing strip;

[0026] 3. When the sealing strip comes into contact with water, the sealing strip expands and presses tightly against the first installation groove or the second installation groove, reducing the gap in the first installation groove and the second installation groove and improving the sealing effect of the joint structure. Description of the Drawings

[0027] Figure 1 is a cross-sectional view of a precast slab in the prior art.

[0028] Figure 2 is a cross-sectional view of this embodiment.

[0029] Figure 3 is this embodiment Figure 2 an enlarged view of part A.

[0030] Description of the reference numerals: 1, outer leaf plate; 2, sandwich insulation layer; 3, inner leaf plate; 4, joint gap; 5, cast-in-place concrete layer; 6, waterproof glue layer; 100, insulation strip; 110, tape layer; 120, drainage cavity; 200, sealing strip; 300, base; 310, first plate; 311, baffle; 312, limiting block; 313, limiting hole; 320, second plate; 330, support plate; 340, first installation groove; 341, rib; 350, second installation groove; 351, metal spring piece. Detailed Description of the Invention

[0031] The following is combined with the attached Figure 2-3A further detailed description of the present application will be given.

[0032] An embodiment of the present application discloses an exterior wall panel joint structure. Refer to Figure 2 , an exterior wall panel joint structure, including a heat preservation strip 100 and a sealing strip 200. The heat preservation strip 100 and the sealing strip 200 are both arranged in the joint gap 4. The length direction of the heat preservation strip 100 is consistent with the length direction of the joint gap 4, and the width direction of the heat preservation strip 100 is consistent with the width direction of the joint gap 4. The length direction of the sealing strip 200 is consistent with the length direction of the joint gap 4, and the width direction of the sealing strip 200 is consistent with the width direction of the joint gap 4. The heat preservation strip 100 is arranged inside the joint gap 4 and is used to connect with the cast-in-place concrete layer 5. The sealing strip 200 is arranged in the connection port, and bases 300 are provided at both ends of the sealing strip 200 along its width direction. The two bases 300 are respectively connected to the inner walls on both sides of the connection port along the width direction of the joint gap 4, and the length direction of the base 300 is consistent with the length direction of the joint gap 4. A drainage cavity 120 is provided at intervals between the sealing strip 200 and the heat preservation strip 100. The heat preservation strip 100 is made of a rock wool layer.

[0033] The outside of the joint gap 4 is sealed and waterproofed by installing the sealing strip 200, which makes the operation more convenient, reduces wet operations, and improves the waterproof effect.

[0034] Refer to Figure 2 , a tape layer 110 is provided on the side of the heat preservation strip 100 close to the cast-in-place concrete layer 5. The length direction of the tape layer 110 is consistent with the length direction of the heat preservation strip 100. The tape layer 110 is made of a self-adhesive butyl tape. One side of the tape layer 110 is used to connect with the cast-in-place concrete layer 5, and the other side of the tape layer 110 is connected to the heat preservation strip 100.

[0035] Refer to Figure 2 and Figure 3 , the base 300 includes a first plate 310 and a second plate 320. The length direction of the second plate 320 is consistent with the depth direction of the joint gap 4. One end of the first plate 310 is connected to one end of the second plate 320, and the other end of the first plate 310 is inclined towards the middle of the joint gap 4. The ends of the two first plates 310 far from the second plate 320 are close to each other. A support plate 330 is connected to the first plate 310. The width direction of the support plate 330 is consistent with the width direction of the joint gap 4, and the other end of the support plate 330 is used to connect with the precast slab. One end of the first plate 310 far from the second plate 320 is bent to form a first installation groove 340. The opening of the first installation groove 340 is inclined towards the connection port, and the inclination angle of the first installation groove 340 is 45°. One end of the second plate 320 far from the first plate 310 is bent to form a second installation groove 350. The opening of the second installation groove 350 is arranged towards one side of the connection port.

[0036] Refer to Figure 2 and Figure 3, there are two sealing strips 200, and both of the two sealing strips 200 are detachably connected to the base 300. One sealing strip 200 is respectively embedded in two first installation grooves 340 at both ends along its width direction, and the other sealing strip 200 is respectively embedded in two second installation grooves 350 at both ends along its width direction.

[0037] Referring to Figure 2 and Figure 3 , the length direction of the first installation groove 340 is consistent with the length direction of the base 300. A plurality of convex strips 341 are connected to the inner walls on both sides of the first installation groove 340 along its width direction. The plurality of convex strips 341 are spaced apart along the depth direction of the first installation groove 340. The length direction of the convex strips 341 is consistent with the length direction of the first installation groove 340, and the convex strips 341 are in contact with the sealing strip 200. The sealing strip 200 is detachably connected to the base 300, so as to facilitate the replacement of the sealing strip 200, thereby improving the sealing effect of the joint structure.

[0038] Referring to Figure 2 and Figure 3 , a baffle 311 is slidably connected to the first plate 310. The length direction of the baffle 311 is consistent with the length direction of the base 300, and the width direction of the baffle 311 is consistent with the width direction of the first plate 310. The baffle is slidably connected to the side of the first plate 310 away from the inner wall of the joint gap 4 along its width direction. One end of the baffle 311 along its width direction covers the opening of the first installation groove 340 and is in contact with the sealing strip 200.

[0039] Referring to Figure 2 and Figure 3 , a limiting block 312 is connected to the side of the baffle 311 close to the joint gap 4. The first plate 310 is provided with a limiting hole 313. The length direction of the limiting hole 313 is consistent with the width direction of the first plate 310. The limiting block 312 is slidably connected to the limiting hole 313 along the width direction of the first plate 310. The baffle 311 is provided with a locking member, and the locking member is a bolt. The bolt passes through and is bolted to the baffle 311 and the first plate 310. When one end of the sealing strip 200 is embedded in the first installation groove 340, one end of the baffle 311 abuts against the sealing strip 200, so that the sealing strip 200 is stably connected in the first installation groove 340.

[0040] Referring to Figure 2 and Figure 3, on the inner wall of the second installation groove 350 away from the opening side of the second installation groove 350, an elastic member is connected. The elastic member is provided as a metal spring piece 351. There are two metal spring pieces 351, and the two metal spring pieces 351 are distributed in sequence along the width direction of the second installation groove 350. The metal spring piece 351 is used to press the sealing strip 200 against the inner wall of the second installation groove 350. By adding the elastic member, when one end of the sealing strip 200 is embedded in the second installation groove 350, the metal spring piece 351 drives the sealing strip 200 to be pressed against the inner wall of the second installation groove 350, so that the sealing strip 200 is stably connected in the second installation groove 350.

[0041] The implementation principle of an exterior wall panel joint structure in an embodiment of the present application is as follows: When installing the sealing strip 200, the two sealing strips 200 are respectively embedded in the first installation groove 340 and the second installation groove 350. When the sealing strip 200 is embedded in the first installation groove 340, the convex strip 341 contacts the sealing strip 200, and the baffle 311 is moved along the width direction of the first plate 310, so that the baffle 311 contacts the sealing strip 200, and the baffle 311 presses the sealing strip 200 against the inner wall of the first installation groove 340, so that the sealing strip 200 is stably connected in the first installation groove 340. When the sealing strip 200 is embedded in the second installation groove 350, the metal spring piece 351 is deformed by extrusion. Because the metal spring piece 351 has elasticity, the metal spring piece 351 drives the sealing strip 200 to be pressed against the inner wall of the second installation groove 350, so that the sealing strip 200 is stably connected to the inner wall of the second installation groove 350. The sealing strip 200 seals and waterproofs the outside of the joint gap 4, reducing wet operations and improving the waterproof effect.

[0042] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An exterior wall panel joint structure, characterized in that: The invention comprises a thermal insulation strip (100) and a sealing strip (200), wherein the thermal insulation strip (100) and the sealing strip (200) are arranged in a joint gap (4), the thermal insulation strip (100) is used to connect to a cast-in-place concrete layer (5), the sealing strip (200) is arranged on a side of the thermal insulation strip (100) away from the cast-in-place concrete layer (5), a drainage cavity (120) is provided between the sealing strip (200) and the thermal insulation strip (100), the sealing strip (200) is connected to the inner wall of the joint gap (4) via a base (300), two bases (300) are provided, the length direction of the base (300) is consistent with the length direction of the external wall board, the two bases (300) are respectively arranged on the inner walls of the joint gap (4) on opposite sides, and the two ends of the sealing strip (200) are respectively connected to the two bases (300).

2. The exterior wall panel joint structure according to claim 1, characterized in that: Two sealing belts (200) are provided, and the two sealing belts (200) are distributed in sequence along the depth direction of the joint gap (4).

3. The exterior wall panel joint structure according to claim 2, characterized in that: The two sealing belts (200) are both detachably connected to the base (300); the base (300) is provided with a first mounting groove (340) and a second mounting groove (350); the length direction of the first mounting groove (340) is consistent with the length direction of the base (300); the length direction of the second mounting groove (350) is consistent with the length direction of the base (300); the first mounting groove (340) is provided on a side of the base (300) close to the cast-in-place concrete layer (5); the second mounting groove (350) is provided on a side of the base (300) away from the cast-in-place concrete layer (5); two ends of one sealing belt (200) are respectively embedded in the two first mounting grooves (340); and two ends of the other sealing belt (200) are respectively embedded in the two second mounting grooves (350).

4. The exterior wall panel joint structure according to claim 3, characterized in that: A plurality of convex strips (341) are connected to the inner wall of the first installation groove (340); the length direction of the convex strips (341) is consistent with the length direction of the first installation groove (340); and the convex strips (341) are in contact with the sealing belt (200).

5. The exterior wall panel joint structure according to claim 3, characterized in that: The opening of the first installation groove (340) is arranged to be inclined toward a side away from the cast-in-place concrete layer (5).

6. The exterior wall panel joint structure according to claim 4, characterized in that: The base (300) is connected to a baffle (311), the length direction of the baffle (311) is consistent with the length direction of the first mounting groove (340), the baffle (311) is slidably connected to the base (300), one end of the baffle (311) along its width direction is covered at the opening of the first mounting groove (340), one end of the baffle (311) is used to press the sealing belt (200) into the first mounting groove (340), and the baffle (311) is provided with a locking member, which is used to lock the baffle (311) to the base (300).

7. The exterior wall panel joint structure according to claim 3, characterized in that: An elastic member is connected to the inner wall of the second installation groove (350), and the elastic member is used to press the sealing belt (200) against the inner wall of the second installation groove (350).

8. The exterior wall panel joint structure according to claim 1, characterized in that: The sealing strip (200) is provided by an elastic water stop strip that expands when exposed to water.

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