A reinforcing device for a spliced joint of a laminated slab

Abstract

The utility model relates to a kind of laminated board splicing joint reinforcing device, belong to the technical field of building engineering, including the butt face located in the edge of prefabricated laminated board, the upper surface of prefabricated laminated board is fixed with steel bar truss, prefabricated laminated board is fixedly arranged with reinforcing bar, reinforcing bar penetrates the side surface of prefabricated laminated board, and extend to the outside of prefabricated laminated board, and form splicing joint when being close to splicing between two adjacent positions of prefabricated laminated board;When being close between two prefabricated laminated boards, two butt faces are close, and inner butt joint structure and outer butt joint structure complete splicing, by the cooperation of insertion and clamping, simultaneously by pouring concrete, the effective laminating between two butt faces can be effectively guaranteed, in this way, the splicing joint between two prefabricated laminated boards can be minimized, simultaneously, after the long-term use of two prefabricated laminated boards after splicing, splicing joint is also not easy to increase, improve the practicality of prefabricated laminated board.

Description

Technical Field

[0001] This utility model relates to a reinforcement device for splicing joints of composite slabs, belonging to the field of building engineering technology. Background Technology

[0002] Composite slabs are precast components commonly used in prefabricated concrete structures in China, consisting of a precast base slab and a post-cast concrete composite layer. Due to limitations imposed by the maximum permissible dimensions of precast base slabs during production and transportation in actual projects, composite slabs for rooms with large spans and long depths require separate design, with the precast base slabs connected by joints. These joints are called composite slab splice joints.

[0003] Currently, the conventional method for joining two composite slabs is to use extended steel bars for connection and form a splice between the two composite slabs by pouring cement. However, this method still has the problem of a large splice between the two composite slabs.

[0004] Therefore, in view of this, we have studied and improved the existing structure to provide a reinforcement device for the splicing joints of composite slabs, in order to achieve a more practical purpose. Utility Model Content

[0005] To achieve the above objectives, this utility model provides the following technical solution: a composite slab splice reinforcement device, comprising a mating surface located at the edge of a precast composite slab, a steel truss fixed to the upper surface of the precast composite slab, reinforcing steel bars fixedly arranged inside the precast composite slab, the reinforcing steel bars penetrating the side surface of the precast composite slab and extending to the outside of the precast composite slab, and a splice joint being formed when two adjacent precast composite slabs are spliced ​​close together; an inner mating structure is provided on the first mating surface near the splice joint, and an outer mating structure is fixedly provided on the second mating surface near the splice joint, the inner mating structure and the outer mating structure are close to each other and are connected, and there are several thin reinforcing bars and several thick reinforcing bars between the inner mating structure and the outer mating structure.

[0006] A further improvement is that the inner docking structure consists of several No. 1 single-unit docking blocks, which are continuously and closely distributed among each other; the outer docking structure consists of several No. 2 single-unit docking blocks and several insert blocks, which are continuously and closely distributed among each other, and the insert blocks are evenly spaced among each other.

[0007] Further improvements include protruding blocks at the top center and bottom center of the No. 1 unit docking block; inner grooves at the top and bottom of the inner side of the No. 2 unit docking block, which match and engage with the protruding blocks; a docking square groove is opened in the middle of the No. 1 unit docking block, and the insert block matches and engages with the docking square groove; the number of insert blocks on each outer docking structure is no less than ten.

[0008] A further improvement is that fine casting holes are provided on both the No. 1 and No. 2 unit docking blocks; the No. 1 unit docking block has four fine casting holes, and the No. 2 unit docking block has two fine casting holes; the diameter of the fine dowel is not greater than the diameter of the fine casting hole.

[0009] A further improvement is that both the No. 1 and No. 2 unit docking blocks are provided with coarse casting holes; specifically, the No. 1 unit docking block has two coarse casting holes, while the insert block has one coarse casting hole.

[0010] A further improvement is that the diameter of the coarse reinforcing bar is no larger than the diameter of the coarse casting hole.

[0011] The beneficial effects of this utility model are:

[0012] By bringing the two precast composite slabs close together, ensuring the two mating surfaces are close together, and completing the splicing of the inner and outer mating structures, and through the cooperation of insertion and snap-fit, while simultaneously pouring concrete, the effective overlap between the two mating surfaces can be effectively guaranteed. This minimizes the splicing seam between the two precast composite slabs, and also prevents the splicing seam from increasing after long-term use of the two precast composite slabs, thus improving the practical performance of the precast composite slabs. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the prefabricated composite slab in this utility model;

[0014] Figure 2 This is a schematic diagram of the inner docking structure in this utility model;

[0015] Figure 3 This is a schematic diagram of the docking structure between the Chinese and foreign parts of this utility model;

[0016] Figure 4 This is a schematic diagram of the structure of the No. 1 single-unit docking block, the No. 2 single-unit docking block, and the insert block in this utility model when they are inserted into each other.

[0017] Explanation of the labels in the diagram:

[0018] 1. Precast composite slab; 101. Steel truss; 102. Reinforcing steel bars;

[0019] 2. Dating surface;

[0020] 3. Internal docking structure; 301. No. 1 single-unit docking block; 3011. Protruding block; 3012. Dock square groove; 3013. Fine pouring hole; 3014. Coarse pouring hole;

[0021] 4. External docking structure; 401. No. 2 single-unit docking block; 4011. Inner groove; 402. Insert block;

[0022] 5. Thin reinforcing bars;

[0023] 6. Thick reinforcing bars. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] according to Figure 1 - Figure 4 As shown, a composite slab splice reinforcement device includes a mating surface 2 located at the edge of a precast composite slab 1, a steel truss 101 fixed on the upper surface of the precast composite slab 1, and a reinforcing steel bar 102 fixedly installed inside the precast composite slab 1. The reinforcing steel bar 102 penetrates the side surface of the precast composite slab 1 and extends to the outside of the precast composite slab 1. When two adjacent precast composite slabs 1 are spliced ​​together, a splice joint is formed.

[0026] An inner mating structure 3 is provided on the first mating surface 2 near the splice seam, and an outer mating structure 4 is fixedly provided on the second mating surface 2 near the splice seam. The inner mating structure 3 and the outer mating structure 4 are close to each other and are mated together. There are several thin reinforcing bars 5 and several thick reinforcing bars 6 between the inner mating structure 3 and the outer mating structure 4.

[0027] Figure 1 , Figure 2 , Figure 3 , Figure 4 Specifically, the inner docking structure 3 is composed of several No. 1 single docking blocks 301, which are continuously and closely distributed among each other.

[0028] The external docking structure 4 consists of several No. 2 single-unit docking blocks 401 and several insert blocks 402. The No. 2 single-unit docking blocks 401 are continuously and closely distributed among each other, and the insert blocks 402 are evenly spaced among each other.

[0029] The first unit docking block 301 has protruding blocks 3011 at the top center and bottom center; the second unit docking block 401 has inner grooves 4011 at the top and bottom of its inner side, which are matched and engaged with the protruding blocks 3011. The first unit docking block 301 has a docking square groove 3012 in the middle, and the insert block 402 is matched and engaged with the docking square groove 3012.

[0030] After the two prefabricated composite slabs 1 are brought close together and spliced, the locking relationship between the inner groove 4011 and the protrusion 3011, and the locking relationship between the insert 402 and the docking square groove 3012 are used to prevent the two prefabricated composite slabs 1 from moving in other directions except when they separate in opposite directions.

[0031] The number of inserts 402 set on each external docking structure 4 shall not be less than ten.

[0032] Multiple insertion blocks 402 can form multiple insertion structures, thereby forming a limiting relationship between multiple insertion blocks 402 and the docking square groove 3012, ensuring the tightness of the splicing of two prefabricated composite slabs 1.

[0033] Both the No. 1 unit docking block 301 and the No. 2 unit docking block 401 are provided with fine pouring holes 3013; the No. 1 unit docking block 301 has four fine pouring holes 3013, and the No. 2 unit docking block 401 has two fine pouring holes 3013.

[0034] The diameter of the thin reinforcing bar 5 is no larger than the diameter of the thin pouring hole 3013. Inserting the thin reinforcing bar 5 into the thin pouring hole 3013 prevents the two precast composite slabs 1 from separating, and allows for concrete pouring into the excess space of the thin pouring hole 3013; alternatively, concrete can be poured directly into the thin pouring hole 3013 without inserting the thin reinforcing bar 5. Both the No. 1 unit joint block 301 and the No. 2 unit joint block 401 are provided with coarse pouring holes 3014; specifically, the No. 1 unit joint block 301 has two coarse pouring holes 3014, and the insert block 402 has one coarse pouring hole 3014; the diameter of the coarse reinforcing bar 6 is no larger than the diameter of the coarse pouring hole 3014. Similarly, by inserting the thick reinforcing bar 6 into the thick pouring hole 3014, the separation between the two precast composite slabs 1 can be prevented, and the excess gap in the thick pouring hole 3014 can be used to pour concrete; or the thick reinforcing bar 6 can be not inserted, and concrete can be poured directly into the thick pouring hole 3014.

[0035] When the two precast composite slabs 1 are brought close together, the two mating surfaces 2 are brought close together, and the inner mating structure 3 and the outer mating structure 4 are spliced ​​together. Specifically, the insert block 402 is inserted into the mating square groove 3012, the inner groove 4011 is matched and engaged with the protruding block 3011, and then the thin insert bar 5 is inserted into the thin pouring hole 3013, and the thick insert bar 6 is inserted into the thick pouring hole 3014, and concrete is poured to form a tight connection between the two precast composite slabs 1. At the same time, the effective overlap between the two mating surfaces 2 is ensured. In this way, the splice seam between the two precast composite slabs 1 can be minimized. At the same time, after long-term use of the two precast composite slabs 1 after splicing, the splice seam is not likely to increase.

[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A reinforcement device for splice joints of composite slabs, characterized in that: The precast composite slab includes a butt joint surface located at the edge of the precast composite slab. A steel truss is fixed to the upper surface of the precast composite slab. Reinforcing steel bars are fixed inside the precast composite slab. The reinforcing steel bars penetrate the side surface of the precast composite slab and extend to the outside of the precast composite slab. When two adjacent precast composite slabs are spliced ​​together, a splice joint is formed. An inner butt joint structure is provided on the first butt joint surface near the splice joint, and an outer butt joint structure is fixedly provided on the second butt joint surface near the splice joint. The inner butt joint structure and the outer butt joint structure are close to each other and are connected by a number of thin reinforcing bars and a number of thick reinforcing bars.

2. A device for reinforcing a splice joint of a laminated veneer lumber according to claim 1, characterized in that: The inner docking structure consists of several No. 1 single-unit docking blocks, which are continuously and closely distributed among each other; the outer docking structure consists of several No. 2 single-unit docking blocks and several insert blocks, which are continuously and closely distributed among each other, and the insert blocks are evenly spaced among each other.

3. A device for reinforcing a splice joint of a laminated veneer lumber according to claim 2, characterized in that: The No. 1 unit docking block has protruding blocks at the top center and bottom center; the No. 2 unit docking block has inner grooves at the top and bottom of the inner side, which match and engage with the protruding blocks; the No. 1 unit docking block has a docking square groove in the middle, and the insert block matches and engages with the docking square groove; the number of insert blocks on each outer docking structure is no less than ten.

4. A device for reinforcing a splice joint of a laminated veneer lumber according to claim 3, characterized in that: Both the No. 1 and No. 2 unit joint blocks are provided with fine casting holes; the No. 1 unit joint block has four fine casting holes, and the No. 2 unit joint block has two fine casting holes; the diameter of the fine dowel is not greater than the diameter of the fine casting hole.

5. A device for reinforcing a splice joint of a laminated veneer lumber according to claim 4, characterized in that: Both the No. 1 and No. 2 unit docking blocks are provided with coarse casting holes; the No. 1 unit docking block has two coarse casting holes, while the insert block has one coarse casting hole.

6. A device for reinforcing a splice joint of a laminated veneer lumber according to claim 5, wherein: The diameter of the thicker insert should not be greater than the diameter of the thicker casting hole.

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