Outer wall post-cast strip mold reinforcing system

Abstract

The utility model relates to the technical field of post-cast strips, in particular to an outer wall post-cast strip mold reinforcing system. The system is arranged between structural shear walls on the two sides and comprises an outer wall post-cast strip, an inner side formwork, a prefabricated outer formwork, an outer wall waterproof coiled material and outdoor backfill soil, the outer wall post-cast strip is arranged between the structural shear walls on the two sides, the inner side formwork is arranged on the outer side of the outer wall post-cast strip, the prefabricated outer formwork is arranged outside the inner side formwork, and the outer wall waterproof coiled material is arranged outside the outer wall waterproof coiled material. The outer wall waterproof coiled material is arranged outside the prefabricated outer formwork, and outdoor backfill soil is arranged outside the outer wall waterproof coiled material. The system can ensure the sealing performance and the integrity of the outer wall post-cast strip, the concrete construction quality of the post-cast strip is effectively guaranteed, the water leakage risk of the post-cast strip is greatly reduced, and the mold system is safe, reliable, green and environmentally friendly and is mainly applied to outer wall post-cast strip mold reinforcement.

Description

Technical Field

[0001] This utility model relates to the field of post-pouring strip technology, and more specifically, to a mold reinforcement system for post-pouring strips on exterior walls. Background Technology

[0002] Most cast-in-place concrete structures are designed with post-cast strips, which can only be poured after the main structure is completed. In traditional construction plans, after the post-cast strips are constructed, exterior waterproofing, backfilling, and other outdoor works are carried out, severely restricting the construction schedule. The long-term exposure of the post-cast strips prevents the main structure from forming a closed space, allowing rainwater and debris to enter, making subsequent cleaning time-consuming and labor-intensive, affecting the quality of the post-cast strip concrete, and increasing the risk of water seepage. Single-sided formwork reinforcement usually uses diagonal bracing, which requires the horizontal post-cast strips to be completed and strengthened. Therefore, the construction of vertical post-cast strips is constrained by the horizontal post-cast strips, leading to extended construction periods. Utility Model Content

[0003] To overcome the shortcomings of the existing technology, this utility model provides a reinforcement system for post-cast strip formwork in exterior walls. This reinforcement system uses precast formwork combined with a high-strength reinforcement system to solve the problems of long installation periods and significant environmental impact on post-cast strip formwork.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] An external wall post-cast strip mold reinforcement system is provided, which is set between two structural shear walls. The system includes an external wall post-cast strip, an inner template, a precast outer template, an external wall waterproof membrane, and outdoor backfill soil. The external wall post-cast strip is set between the two structural shear walls. The inner template is set outside the external wall post-cast strip. The precast outer template is set outside the inner template. The external wall waterproof membrane is set outside the precast outer template. Outdoor backfill soil is set outside the external wall waterproof membrane.

[0006] The width of the post-cast strip on the exterior wall is 800mm, and the width module of the inner template and the precast outer template is 1000mm.

[0007] The inner template is made of wood, and the precast outer template is made of precast concrete cover plate.

[0008] Both sides of the inner template and the precast outer template overlap with the structural shear wall, with an overlap width of 100mm.

[0009] The inner template and the precast outer template are inclined at 45° towards the structural shear wall within a 100mm range on both sides.

[0010] The precast outer formwork is equipped with a cover plate on top, and the cover plate is integrally cast with the precast outer formwork. A 250mm long iron wire is pre-embedded on the side of the precast outer formwork near the post-cast strip of the outer wall. The iron wire is embedded 100mm into the concrete and 150mm protrudes outward. The pre-embedded iron wire is tied to the steel bars in the post-cast strip of the outer wall.

[0011] A lifting ring is pre-embedded on the cover plate at the top of the prefabricated outer template, and the lifting ring is embedded 100mm into the cover plate.

[0012] The inner template is fixed by main keel and secondary keel. The first set of main keel is set at 250mm from the ground. The second and third main keels are set at 250mm intervals. The fourth and subsequent main keels are set at 600mm intervals. The main keels are fixed on both sides by expansion bolts. The first secondary keel is set 150mm from both sides of the inner template. The second secondary keel is set 200mm away from the first secondary keel.

[0013] The main keel is made of 1300mm long angle steel, and the secondary keel is made of 40*90 square timber.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] A novel external wall post-cast strip mold reinforcement system is adopted. Prefabricated outer formwork can fully utilize on-site surplus materials, protecting the exposed post-cast strip from debris and preventing it from entering, without affecting subsequent waterproofing and other construction processes. The inner formwork is reinforced with angle steel, which has high load-bearing capacity, good toughness, and can be reused. The mold system is flexible, easy to operate, and widely applicable. Its design principle can be used for buildings of different heights, and it has strong tolerance for errors in on-site layout and the flatness of the main structure. Using this system ensures the sealing and integrity of the external wall post-cast strip, effectively guaranteeing the quality of the post-cast strip concrete construction, and greatly reducing the risk of leakage. The mold system is safe, reliable, environmentally friendly, and economically beneficial, making it worthy of widespread application. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the present invention;

[0017] Figure 2 This is a schematic diagram of the prefabricated outer template and inner template in this utility model;

[0018] Figure 3 This is an elevation view of the prefabricated external formwork in this utility model;

[0019] Figure 4 This is a schematic diagram of the inner template setting in this utility model;

[0020] In the diagram: 1 is the structural shear wall, 2 is the post-cast strip of the exterior wall, 3 is the precast outer formwork, 4 is the inner formwork, 5 is the exterior waterproof membrane, 6 is the backfill soil, 7 is the lifting ring, 8 is the concrete layer, 9 is the main keel, and 10 is the secondary keel. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0023] like Figures 1 to 4 As shown, a post-cast strip formwork reinforcement system for exterior walls is installed between two structural shear walls 1. The system includes a post-cast strip 2, precast outer formwork 3, inner formwork 4, exterior waterproof membrane 5, and outdoor backfill soil 6. The post-cast strip 2 is positioned between the two structural shear walls 1. The inner formwork 4 is positioned outside the post-cast strip 2, the precast outer formwork 3 is positioned outside the inner formwork 4, the exterior waterproof membrane 5 is positioned outside the precast outer formwork 3, and outdoor backfill soil 6 is positioned outside the exterior waterproof membrane 5. After the precast outer formwork 3 is installed, the construction of the exterior waterproof membrane 5 and outdoor backfill soil 6 is not affected. The inner formwork 4 and the two structural shear walls 1 form a load-bearing system, avoiding the constraints of horizontal post-cast strip construction.

[0024] Preferably, the width of the post-cast strip 2 of the exterior wall is 800mm, and the width module of the inner template 4 and the precast outer template 3 is 1000mm.

[0025] Preferably, the inner formwork 4 is made of wood, and the precast outer formwork 3 is made of precast concrete slabs. The inner formwork 4 and the precast outer formwork 3 are used together to establish a formwork system.

[0026] Preferably, both sides of the inner formwork 4 and the precast outer formwork 3 overlap with the structural shear wall 1, with an overlap width of 100mm. This ensures the reliability of the reinforcement of the inner formwork 4 and the precast outer formwork 3, as well as the forming quality of the joint between the old and new concrete.

[0027] Preferably, the inner formwork 4 and the precast outer formwork 3 are inclined at a 45° angle towards the structural shear wall 1 within a 100mm range on both sides. This effectively ensures a tight seal of the post-pouring strip, prevents debris from entering the post-pouring strip, and provides good protection.

[0028] Preferably, a cover plate 8 is provided on the top of the precast outer formwork 3. The cover plate 8 is integrally cast with the precast outer formwork 3. A 250mm long iron wire is pre-embedded on the side of the precast outer formwork 3 near the post-cast strip 2 of the outer wall. The iron wire is embedded 100mm into the concrete and 150mm protrudes outward. The pre-embedded iron wire is tied to the steel bars in the post-cast strip 2 of the outer wall. After the precast outer formwork 3 is in place, the iron wire is tied to the steel bars in the post-cast strip 2 of the outer wall to temporarily fix the precast outer formwork 3.

[0029] Preferably, a lifting ring 7 is pre-embedded on the cover plate 8 at the top of the prefabricated outer formwork 3, with the lifting ring 7 embedded 100mm into the cover plate 8. The radius of the lifting ring 7 is 130mm. Its function is to facilitate lifting by tower cranes and other lifting machinery.

[0030] Preferably, the inner template 4 is fixed by the main keel 9 and the secondary keel 10. The first set of main keels 9 is set at 250mm from the ground. The second and third sets of main keels 9 are set at 250mm intervals. The fourth and subsequent sets of main keels 9 are set at 600mm intervals. The main keels 9 are fixed on both sides by expansion bolts. The first set of secondary keels 10 is set at 150mm along both sides of the inner template 4. The second set is set at a position 200mm away from the first set of secondary keels 10.

[0031] Preferably, the main keel 9 is made of 1300mm long angle steel, and the secondary keel 10 is made of 40*90 square timber. The main keel 9 has a 13.5mm diameter hole with a diameter of 13.5mm, centered 100mm inward from its edge, for expansion bolts to pass through and fix the angle steel. When reinforcing the main keel 9, 60×60×3 steel washers are placed on the contact surface between the expansion bolts and the main keel 9 to increase the bearing area and ensure even stress distribution.

[0032] Once the strength of the shear walls 1 on both sides of the post-cast strip 2 of the exterior wall reaches 75%, this reinforcement system can be installed. After the cover plate 8 is hoisted into place using tower cranes or other lifting machinery, the precast outer formwork 3 is secured with pre-reserved wire and reinforcing bars to prevent rainwater and debris from entering the post-cast strip 2, thus creating a closed space for the main structure. The project team can then proceed with the construction of the exterior wall waterproof membrane 5 and the outdoor backfill 6 according to the overall construction plan. The precast outer formwork 3 is tightened by the lateral pressure of the outdoor backfill 6. Before reinforcing the inner formwork 4, expansion bolts are drilled at predetermined positions and installed. After installing the secondary keel 10, the main keel 9 is passed through the bolts, steel washers are added, and the nuts are tightened. Afterward, the concrete for the post-cast strip 2 of the exterior wall can be poured according to conventional methods. Once the demolding conditions are met, the reinforcement system of the inner formwork 4 of the post-cast strip is removed.

[0033] The above description only details the preferred embodiments of the present utility model. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model, and all such changes should be included within the protection scope of the present utility model.

Claims

1. A formwork reinforcement system for post-cast strips in exterior walls, wherein the system is installed between two structural shear walls (1) on both sides, characterized in that: The structure includes an external wall post-cast strip (2), a precast external formwork (3), an inner formwork (4), an external wall waterproof membrane (5), and outdoor backfill soil (6). The external wall post-cast strip (2) is set between the two structural shear walls (1). The inner formwork (4) is set outside the external wall post-cast strip (2). The precast external formwork (3) is set outside the inner formwork (4). The external wall waterproof membrane (5) is set outside the precast external formwork (3). Outdoor backfill soil (6) is set outside the external wall waterproof membrane (5).

2. The external wall post-cast strip mold reinforcement system according to claim 1, characterized in that: The width of the external wall post-cast strip (2) is 800mm, and the width module of the inner template (4) and the precast outer template (3) is 1000mm.

3. The external wall post-cast strip mold reinforcement system according to claim 1, characterized in that: The inner template (4) is made of wood, and the precast outer template (3) is made of precast concrete.

4. The external wall post-cast strip mold reinforcement system according to claim 1, characterized in that: The inner template (4) and the prefabricated outer template (3) overlap with the structural shear wall (1) on both sides, with an overlap width of 100mm.

5. The external wall post-cast strip mold reinforcement system according to claim 4, characterized in that: The inner template (4) and the prefabricated outer template (3) are inclined at 45° towards the structural shear wall (1) within a 100mm range on both sides.

6. The external wall post-cast strip mold reinforcement system according to claim 1, characterized in that: The precast outer formwork (3) is provided with a cover plate (8) on top. The cover plate (8) and the precast outer formwork (3) are integrally cast. A 250mm long iron wire is pre-embedded on the side of the precast outer formwork (3) near the outer wall post-cast strip (2). The iron wire is embedded 100mm into the concrete and 150mm protrudes outward. The pre-embedded iron wire is tied to the steel bar in the outer wall post-cast strip (2).

7. The external wall post-cast strip mold reinforcement system according to claim 6, characterized in that: A lifting ring (7) is pre-embedded on the cover plate (8) at the top of the prefabricated outer template (3), and the lifting ring (7) is embedded 100mm into the cover plate (8).

8. The external wall post-cast strip mold reinforcement system according to claim 1, characterized in that: The inner template (4) is fixed by the main keel (9) and the secondary keel (10). The first set of the main keel (9) is set at 250mm from the ground. The second and third main keels (9) are set at 250mm intervals. The fourth and above main keels (9) are set at 600mm intervals. The two sides of the main keel (9) are fixed by expansion bolts. The first secondary keel (10) is set at 150mm from the two sides of the inner template (4). The second secondary keel (10) is set at a position 200mm away from the first secondary keel (10).

9. The external wall post-cast strip mold reinforcement system according to claim 8, characterized in that: The main keel (9) is made of 1300mm angle steel, and the secondary keel (10) is made of 40*90 square timber.

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