Steel structure concrete post-cast strip capable of being continuously constructed

Abstract

The utility model discloses a steel structure concrete post-cast strip capable of being continuously constructed, which relates to the technical field of concrete post-cast strips and comprises concrete plates, post-cast strip steel plates are mounted on opposite inner walls of the concrete plates, and two post-cast strip steel plates of two adjacent concrete plates are symmetrically arranged. When the steel post-cast strip is used, the two concrete slabs are connected through the arrangement of the post-cast strip steel plate, the upper U-shaped steel plate, the lower U-shaped steel plate and the polyfluortetraethylene plate, and when the two concrete slabs are connected, rapid-setting grouting materials are poured into the grouting expansion joints through the post-grouting holes and the PVC post-grouting pipes to block the grouting expansion joints, so that a closed and complete steel post-cast strip is formed; at the moment, the waterproof keys prevent leakage, and meanwhile stress generated by concrete hydration heat is evenly transmitted through the shear keys, so that concrete can be directly poured after the steel post-cast strip is installed, waiting time and construction procedures are reduced, and the problem that a large-area concrete post-cast strip is prone to leakage is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete post-casting strips, in particular to a steel structure concrete post-casting strip which can be constructed continuously. Background Art

[0002] In modern large-scale construction projects, underground garages in residential areas and large shopping malls can easily become super-long buildings. In order to eliminate the impact of super-long buildings on concrete structures, structural joints or post-cast strips or both can generally be set. In actual engineering projects, in order to meet the requirements of building appearance and quality, post-cast strips are generally preferred to solve the impact of super-long buildings.

[0003] In the prior art, if the current concrete structure is too long, post-cast strips are usually set at a certain distance, that is, a small part of the concrete is reserved and poured after a period of time. This method can effectively eliminate the temperature stress generated by the concrete during the construction stage and avoid excessive temperature cracks in the concrete structure. At the same time, it can avoid leaving physical seams on the building, but the current post-cast strip construction cycle is too long, which seriously affects the project progress and is not convenient for construction of projects with short investment cycles and high construction period requirements. In addition, the position of the post-cast strip is also more likely to become a leakage point due to the later stage of post-casting, which is not convenient to use. In view of the shortcomings of the prior art, the utility model discloses a steel structure concrete post-cast strip that can be continuously constructed to solve the above problems. Utility Model Content

[0004] The purpose of the present application is to provide a steel structure concrete post-cast strip that can be constructed continuously to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a steel structure concrete post-cast strip that can be continuously constructed, comprising a concrete slab, post-cast strip steel plates are installed on the relative inner walls of the concrete slab, the two post-cast strip steel plates of two adjacent concrete slabs are symmetrically arranged, and the relative inner walls of the two post-cast strip steel plates are each installed with two shear keys, the tops of the two post-cast strip steel plates are jointly welded with an upper U-shaped steel plate, the bottoms of the two post-cast strip steel plates are jointly welded with a lower U-shaped steel plate, a post-grouting expansion joint is formed between the two post-cast strip steel plates, and two waterproof keys are respectively installed on the sides of the two post-cast strip steel plates near the post-grouting expansion joint, an installation hole is opened on the top of the concrete slab, a PVC post-grouting pipe is fixedly installed in the installation hole, an avoidance hole is opened on the top of one of the post-cast strip steel plates, and the PVC post-grouting pipe passes through the avoidance hole and extends into the post-grouting expansion joint.

[0006] Furthermore, a plurality of post-grouting holes are evenly opened on the top of the upper U-shaped steel plate, and the lower U-shaped steel plate is sealed.

[0007] Furthermore, two inner slab reinforcing ribs are installed on the inner side wall of the concrete slab, and the two inner slab reinforcing ribs are symmetrically arranged.

[0008] Furthermore, the four waterproof keys are evenly staggered.

[0009] Furthermore, the four shear keys are evenly staggered and arranged in a plum blossom shape.

[0010] Furthermore, the upper U-shaped steel plate and the lower U-shaped steel plate are both flexibly arranged, and a polytetrafluoroethylene plate is slidably arranged together on the sides close to each other of the two post-cast strip steel plates.

[0011] Furthermore, the post-grouting expansion joint is filled with quick-setting grouting material.

[0012] In summary, the technical effects and advantages of the utility model are:

[0013] 1. In the utility model, when in use, two concrete slabs are connected by the post-casting strip steel plate, the upper U-shaped steel plate and the lower U-shaped steel plate, and the grouting expansion joint can be adjusted by the arrangement of the U-shaped steel plate, the lower U-shaped steel plate and the polytetrafluoroethylene plate. When the adjustment is completed, the quick-setting grouting material poured into the grouting expansion joint is sealed through the post-grouting hole and the PVC post-grouting pipe to form a closed and complete steel post-casting strip. At this time, the waterproof key prevents leakage, and the stress generated by the hydration heat of the concrete is evenly transmitted through the shear key, so that the concrete can be directly poured after the steel post-casting strip is installed, which reduces the waiting time and construction process, and effectively solves the problem of easy leakage of large-area concrete post-casting strips.

[0014] 2. In the utility model, by setting the reinforcing ribs inside the board, a certain strength is increased to avoid the influence of insufficient strength of the concrete board on subsequent construction. By setting the waterproof joint, a certain leakage prevention effect is achieved to reduce the leakage that is easy to occur after large-area concrete pouring. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 It is a schematic diagram of the front view structure of the first viewing angle in the embodiment of the present application;

[0017] Figure 2 This is a schematic diagram of the explosion structure without a concrete slab in the embodiment of the present application.

[0018] In the figure: 1. Concrete slab; 2. Reinforcement ribs in the slab; 3. Post-cast steel plate; 4. Upper U-shaped steel plate; 5. Post-grouting hole; 6. Polytetrafluoroethylene plate; 7. Grouting expansion joint; 8. Lower U-shaped steel plate; 9. Waterproof key; 10. Shear key; 11. PVC post-grouting pipe. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Example: Reference Figure 1-2 A steel structure concrete post-cast strip that can be continuously constructed is shown, comprising a concrete slab 1, on the relative inner walls of which are installed post-cast strip steel plates 3, the two post-cast strip steel plates 3 of two adjacent concrete slabs 1 are symmetrically arranged, and the relative inner walls of the two post-cast strip steel plates 3 are both installed with two shear keys 10, the tops of the two post-cast strip steel plates 3 are jointly welded with an upper U-shaped steel plate 4, the bottoms of the two post-cast strip steel plates 3 are jointly welded with a lower U-shaped steel plate 8, a post-grouting expansion joint 7 is formed between the two post-cast strip steel plates 3, and two waterproof keys 9 are respectively installed on the sides of the two post-cast strip steel plates 3 near the post-grouting expansion joint 7, a mounting hole is opened on the top of the concrete slab 1, and a PVC post-grouting pipe 11 is fixedly installed in the mounting hole, a avoidance hole is opened on the top of one of the post-cast strip steel plates 3, and the PVC post-grouting pipe 11 passes through the avoidance hole and extends into the post-grouting expansion joint 7.

[0021] By means of the above structure, when in use, the post-cast strip steel plate 3 is first installed on the concrete slab 1, and then the post-cast strip steel plates 3 on the two concrete slabs 1 are brought close to each other. When placed, the upper U-shaped steel plate 4 and the lower U-shaped steel plate 8 are respectively welded to the top and bottom of the two post-cast strip steel plates 3. At this time, due to the flexible setting of the U-shaped steel plate 4 and the lower U-shaped steel plate 8 and the setting of the polytetrafluoroethylene plate 6, the grouting expansion joint 7 can be adjusted. When adjusted, the PVC post-grouting pipe 11 is used to seal the quick-setting grouting material in the grouting expansion joint 7 to form a closed and complete steel post-cast strip. At this time, the waterproof key 9 prevents leakage, and at the same time, the shear key 10 makes the stress generated by the hydration heat of the concrete evenly transmitted, so that the concrete can be directly poured after the steel post-cast strip is installed, which reduces the waiting time and construction process, and effectively solves the problem of easy leakage of large-area concrete post-cast strips.

[0022] like Figure 1As shown, a plurality of rear grouting holes 5 are evenly provided on the top of the upper U-shaped steel plate 4, and the lower U-shaped steel plate 8 is sealed. The advantage of such a setting is that the rear grouting holes 5 are provided to facilitate the addition of slurry.

[0023] like Figure 1 As shown, two inner slab reinforcing ribs 2 are installed on the inner side wall of the concrete slab 1. The two inner slab reinforcing ribs 2 are symmetrically arranged. The advantage of such arrangement is that a certain strength is increased by the arrangement of the inner slab reinforcing ribs 2, thereby avoiding that the concrete slab 1 is insufficiently strong and affects subsequent construction.

[0024] like Figure 1 As shown, four waterproof joints 9 are evenly staggered. The advantage of such an arrangement is that the arrangement of the waterproof joints 9 can achieve a certain anti-leakage effect and reduce the possibility of leakage after large-area concrete pouring.

[0025] like Figure 1 As shown, the four shear keys 10 are evenly staggered and arranged in a plum blossom shape. The advantage of such an arrangement is that the stress generated by the heat of concrete hydration is evenly transferred from the shear keys 10 to the two post-cast steel plates 3, and then evenly transferred to the concrete slab 1.

[0026] like Figure 1 As shown, the upper U-shaped steel plate and the lower U-shaped steel plate are both flexibly arranged, and the two post-cast strip steel plates 3 are slidably arranged together with a polytetrafluoroethylene plate 6 on the sides close to each other. The advantage of such an arrangement is that the flexible arrangement of the U-shaped steel plate 4 and the lower U-shaped steel plate 8 and the arrangement of the polytetrafluoroethylene plate 6 allows free deformation to occur between the two concrete slabs.

[0027] like Figure 1 As shown, the post-grouting expansion joint 7 is filled with quick-setting grouting material. The advantage of such an arrangement is that a closed and complete steel post-casting strip is formed by sealing by pouring the quick-setting grouting material.

[0028] How this utility works:

[0029] When in use, first install the post-cast strip steel plate 3 on the concrete slab 1, and then move the post-cast strip steel plates 3 on the two concrete slabs 1 close to each other. When placed, the upper U-shaped steel plate 4 and the lower U-shaped steel plate 8 are welded to the top and bottom of the two post-cast strip steel plates 3 respectively. At this time, due to the flexible setting of the U-shaped steel plate 4 and the lower U-shaped steel plate 8 and the setting of the polytetrafluoroethylene plate 6, the grouting expansion joint 7 can be adjusted. When adjusted, the quick-setting grouting material is poured into the grouting expansion joint 7 through the post-grouting hole 5 and the PVC post-grouting pipe 11 to seal, forming a closed and complete steel post-cast strip. At this time, the waterproof key 9 prevents leakage, and the shear key 10 makes the stress generated by the hydration heat of the concrete evenly transmitted, so that the concrete can be directly poured after the steel post-cast strip is installed, which reduces the waiting time and construction process, and effectively solves the problem of easy leakage of large-area concrete post-cast strips.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is 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 substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A continuously constructible steel structure concrete post-cast strip, comprising a concrete slab (1), characterized in that: Post-cast strip steel plates (3) are installed on the relative inner walls of the concrete slab (1), and the two post-cast strip steel plates (3) of two adjacent concrete slabs (1) are symmetrically arranged. Two shear keys (10) are installed on the relative inner walls of the two post-cast strip steel plates (3). An upper U-shaped steel plate (4) is welded and installed on the tops of the two post-cast strip steel plates (3), and a lower U-shaped steel plate (8) is welded and installed on the bottoms of the two post-cast strip steel plates (3). A post-grouting expansion joint (7) is formed between the two post-cast strip steel plates (3). Two waterproof keys (9) are respectively installed on the sides of the two post-cast strip steel plates (3) close to the post-grouting expansion joint (7). A mounting hole is opened on the top of the concrete slab (1), and a PVC post-grouting pipe (11) is fixedly installed in the mounting hole. A avoidance hole is opened on the top of one of the post-cast strip steel plates (3), and the PVC post-grouting pipe (11) passes through the avoidance hole and extends into the post-grouting expansion joint (7).

2. The continuously constructible steel structure concrete post-cast strip according to claim 1, characterized in that: A plurality of post-grouting holes (5) are evenly arranged on the top of the upper U-shaped steel plate (4), and the lower U-shaped steel plate (8) is sealed.

3. The continuously constructible post-cast steel structure concrete strip according to claim 1, characterized in that: Two in-slab reinforcing ribs (2) are installed on the inner side wall of the concrete slab (1), and the two in-slab reinforcing ribs (2) are symmetrically arranged.

4. The continuously constructible post-cast steel structure concrete strip according to claim 1, characterized in that: The four waterproof keys (9) are evenly staggered.

5. The continuously constructible post-cast steel structure concrete strip according to claim 1, characterized in that: The four anti-shear keys (10) are evenly staggered and arranged in a plum blossom shape.

6. The continuously constructible post-cast steel structure concrete strip according to claim 1, characterized in that: The upper U-shaped steel plate (4) and the lower U-shaped steel plate (8) are both flexibly arranged, and a polytetrafluoroethylene plate (6) is slidably arranged on the two post-cast strip steel plates (3) at the sides close to each other.

7. The continuously constructible post-cast steel structure concrete strip according to claim 1, characterized in that: The post-grouting expansion joint (7) is filled with quick-setting grouting material.

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