Plate descending node connecting structure suitable for assembly type steel structure

Abstract

The utility model relates to the technical field of assembly type steel structure buildings, in particular to a descending plate joint connecting structure suitable for an assembly type steel structure. The problems that according to an existing fabricated steel structure, steel beams connected with floor slabs are exposed outside, the indoor layer is high in height, and the construction cost is high are solved. The scheme comprises a steel beam and a prestressed hollow slab, the steel beam comprises a web, an upper flange and a lower flange, the two ends of the web plate are fixedly connected with the upper flange and the lower flange respectively; the multiple prestressed hollow slabs are horizontally arranged on the two sides of the steel beam. The lower part of the prestressed hollow slab is lapped with the lower flange; and the prestressed hollow slabs are fixed through connecting pieces. Compared with a traditional construction method, the prestressed hollow slab is directly in lap joint with the lower wing plate, the indoor floor height is remarkably increased, the situation that a steel beam is exposed and needs ceiling beautification is avoided, and the construction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of assembled steel structure buildings, in particular to a drop-plate node connection structure suitable for assembled steel structures. Background Art

[0002] In the context of dual carbon, building industrialization, with its many advantages and characteristics such as "standardization of building design, factory production of components, mechanized construction and scientific management", can avoid the unfavorable factors such as high energy consumption, high pollution and low efficiency brought about by traditional construction methods, and lead the transformation and upgrading of the construction industry towards green and low-carbon directions.

[0003] One of the important measures to achieve the industrialization of construction is to develop prefabricated buildings, especially prefabricated steel structures. In existing prefabricated steel structures, the floor slab is generally placed on the upper flange of the steel beam. On the one hand, the steel beam is exposed on the lower side of the floor slab, and it needs to be beautified by installing a suspended ceiling later; on the other hand, the effective height of the floor is reduced, and the construction cost is increased. In view of this, the existing prefabricated steel structure has the problems of exposed steel beams connected to the floor slab, low indoor floor height and high construction cost. Utility Model Content

[0004] The utility model provides a drop-plate node connection structure suitable for assembled steel structures to alleviate the above-mentioned problems.

[0005] In order to alleviate the above technical problems, the technical solution provided by the utility model is:

[0006] This scheme provides a drop-plate node connection structure suitable for assembled steel structures.

[0007] Includes steel beams and prestressed hollow core slabs;

[0008] The steel beam includes a web and upper and lower flanges arranged horizontally;

[0009] The two ends of the web are fixedly connected to the upper flange and the lower flange respectively;

[0010] Multiple prestressed hollow slabs are horizontally arranged on both sides of the steel beam;

[0011] The lower part of the prestressed hollow slab overlaps the lower flange;

[0012] The prestressed hollow slabs are fixed by connecting pieces.

[0013] Further

[0014] The width of the upper flange is smaller than the width of the lower flange.

[0015] Further

[0016] The lap length between the prestressed hollow slab and the lower flange is greater than 80mm.

[0017] Further

[0018] The gaps between the prestressed hollow slab and the web and the gaps between the prestressed hollow slabs are filled with grouting material.

[0019] Further

[0020] The connecting parts include hole-carrying nails and vertical bolts;

[0021] The perforated nail is arranged on the upper part of the prestressed hollow slab, and the tip of the perforated nail is inserted into the prestressed hollow slab;

[0022] The vertical studs are plugged into the hole-carrying nails and the prestressed hollow slab in sequence;

[0023] The side of the vertical stud away from the prestressed hollow slab is fixed by bolts.

[0024] Further

[0025] The connecting parts include longitudinal reinforcement and anchor ring nails;

[0026] The web is provided with a plurality of circular holes arranged transversely;

[0027] The anchor bar ring nail is arranged on the upper part of the prestressed hollow slab, and the tip of the anchor bar ring nail is inserted into the prestressed hollow slab;

[0028] The anchor ring of the anchor ring nail is concentric with the circular hole;

[0029] The longitudinal reinforcements are respectively connected with the anchor rings and the circular holes.

[0030] Further

[0031] The connectors include horizontal studs;

[0032] The horizontal bolts are arranged in parallel on both sides of the web and plugged into the prestressed hollow slab.

[0033] Further

[0034] When the cross-sectional height of the steel beam is much greater than that of the prestressed hollow slab, the steel beam is provided with two webs;

[0035] An angle steel is arranged on each side of the two web plates away from the center of the steel beam;

[0036] The prestressed hollow slab is arranged in the space between the angle steel and the upper flange.

[0037] Further

[0038] When a door opening is arranged on the upper part of the drop-slab node connection structure, the steel beam comprises a first steel beam, a second steel beam and a frame column;

[0039] The first steel beam and the second steel beam are respectively arranged on both sides of the frame column;

[0040] The first steel beam is arranged at the lower part of the door opening;

[0041] The first steel beam has a smaller size than the second steel beam.

[0042] The beneficial effects of the utility model are analyzed as follows:

[0043] In this solution, the prestressed hollow slab is directly overlapped with the lower wing slab. Compared with the traditional construction method, it significantly improves the indoor floor height, avoids the need for suspended ceiling beautification due to the leakage of steel beams, and improves construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the related technologies, the drawings required for use in the specific implementation methods or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0045] Figure 1 This is a schematic diagram of the connection between the steel beam and the prestressed hollow slab in Example 2;

[0046] Figure 2 for Figure 1 Schematic cross-sectional view of ;

[0047] Figure 3 This is a schematic diagram of the connection between the steel beam and the prestressed hollow slab in Example 3;

[0048] Figure 4 for Figure 3 Schematic cross-sectional view of ;

[0049] Figure 5 is a schematic cross-sectional view of a steel beam in Embodiment 3;

[0050] Figure 6 This is a schematic diagram of the connection between the steel beam and the prestressed hollow slab in the fourth embodiment;

[0051] Figure 7 for Figure 6 Schematic cross-sectional view of ;

[0052] Figure 8 It is a top view and cross-sectional schematic diagram of a nail with a hole;

[0053] Fig. 9 The top view and cross-sectional schematic diagram of the anchor bar ring nail;

[0054] Fig.10This is a schematic diagram of the connection between the steel beam and the angle steel in Example 5;

[0055] Fig.11 This is a schematic diagram of the connection between the steel beam and the prestressed hollow slab in Example 5;

[0056] Fig.12 This is a schematic diagram of the location of frame columns and door openings.

[0057] icon:

[0058] 100-steel beam; 110-web; 111-round hole; 112-angle steel; 120-upper flange; 130-lower flange;

[0059] 200-prestressed hollow slab;

[0060] 300-grouting material;

[0061] 410-Hole-carved bolt; 420-Vertical bolt; 430-Longitudinal reinforcement; 440-Anchor ring bolt; 441-Anchor ring; 450-Horizontal bolt;

[0062] 500-door opening; 510-first steel beam; 520-second steel beam; 530-frame column. DETAILED DESCRIPTION

[0063] Embodiment 1

[0064] Since the existing prefabricated steel structure has exposed steel beams connected to the floor, it is necessary to install a suspended ceiling for beautification, which has problems such as low indoor floor height and high construction cost.

[0065] In view of this, if Figures 1 to 12 As shown, the present solution provides a drop-plate node connection structure suitable for assembled steel structures, including a steel beam 100 and a prestressed hollow slab 200;

[0066] The steel beam 100 includes a web 110 and a horizontally arranged upper flange 120 and a lower flange 130;

[0067] The two ends of the web 110 are fixedly connected to the upper flange 120 and the lower flange 130 respectively;

[0068] A plurality of prestressed hollow slabs 200 are horizontally arranged on both sides of the steel beam 100;

[0069] The lower portion of the prestressed hollow slab 200 overlaps the lower flange 130;

[0070] The prestressed hollow slabs 200 are fixed by connecting pieces;

[0071] The width of the upper flange 120 is smaller than the width of the lower flange 130;

[0072] The overlap length between the prestressed hollow slab 200 and the lower flange 130 is greater than 80 mm;

[0073] The gaps between the prestressed hollow slab 200 and the web 110 and the gaps between the prestressed hollow slabs 200 are filled with grouting material 300 .

[0074] In this solution, multiple prestressed hollow slabs 200 are arranged horizontally and directly overlapped on both sides of the upper flange 120. After being fixed with connecting parts, grouting material 300 is poured, which effectively reduces the node connection form of the slab surface elevation, enhances the overall stress performance of the floor slab, reduces the slab surface elevation, increases the effective height of the floor, and at the same time has the effect of not exposing the indoor steel beams.

[0075] Embodiment 2

[0076] like Figure 1 , Figure 2 and Figure 8 As shown, as a further solution of the first embodiment, on the basis of the first embodiment, the connecting member includes a hole-carrying nail 410 and a vertical bolt 420;

[0077] The perforated nail 410 is disposed on the upper portion of the prestressed hollow slab 200, and the tip of the perforated nail 410 is inserted into the prestressed hollow slab 200;

[0078] The vertical bolt 420 is plugged into the hole bolt 410 and the prestressed hollow slab 200 in sequence;

[0079] The side of the vertical stud 420 away from the prestressed hollow slab 200 is fixed by bolts.

[0080] Specifically, the number of the hole-bolts 410 and the vertical studs 420 is set according to the length of the steel beam 100, and the top of the prestressed hollow slab 200 is provided with openings that match the hole-bolts 410 and the vertical studs 420, respectively, and the openings of the hole-bolts 410 match the vertical studs 420. After the prestressed hollow slab 200 is overlapped on the upper part of the lower wing plate 130, the vertical studs 420 are arranged and welded at the overlap of the prestressed hollow slab 200 and the lower wing plate 130 using a stud gun, and then the hole-bolts 410 are passed through the prestressed hollow slab 200 and the vertical studs 420, and fixed with nuts, and finally the grouting material 300 is poured into each joint.

[0081] Embodiment 3

[0082] like Figure 3 , Figure 4 , Figure 5 and Fig. 9 As shown, as a further solution of the first embodiment, on the basis of the first embodiment, the connecting member includes a longitudinal steel bar 430 and a ring nail 440 with an anchor bar;

[0083] The web 110 is provided with a plurality of circular holes 111 arranged transversely;

[0084] The anchor bar ring nail 440 is arranged on the upper part of the prestressed hollow plate 200, and the tip of the anchor bar ring nail 440 is inserted into the prestressed hollow plate 200;

[0085] The anchor ring 441 of the anchor ring nail 440 is concentric with the circular hole 111;

[0086] The longitudinal reinforcement 430 is plugged into the anchor ring 441 and the circular hole 111 respectively.

[0087] Specifically, the number of anchor ring nails 440 and longitudinal steel bars used is set according to the length of the steel beam 100. After the anchor ring nails 440 are inserted into the reserved holes of the prestressed hollow slab 200, the anchor ring 441 corresponds to the circular hole 111. After the longitudinal steel bar 430 passes through the anchor ring 441 and the circular hole 111, the grouting material 300 is finally poured into each joint.

[0088] Embodiment 4

[0089] like Figure 6 and Figure 7 As shown, as a further solution of the first embodiment, on the basis of the first embodiment, the connecting member includes a horizontal bolt 450;

[0090] The horizontal bolts 450 are arranged in parallel on both sides of the web 110 and plugged into the prestressed hollow slab 200 .

[0091] Specifically, the horizontal bolts 450 are directly installed on both sides of the web 110 by welding, and the prestressed hollow slab 200 is placed on both sides of the horizontal bolts. The number of horizontal bolts 450 on both sides is set according to the length of the steel beam 100. After the prestressed hollow slab 200 is placed, the grouting material 300 is finally poured into each joint.

[0092] Embodiment 5

[0093] Furthermore, on the basis of Embodiment 2 to Embodiment 4, as Figures 10 to 12 As shown, when the cross-sectional height of the steel beam 100 is much greater than the prestressed hollow slab 200, the steel beam 100 is provided with two webs 110;

[0094] An angle steel 112 is provided on each side of the two web plates 110 away from the center of the steel beam 100;

[0095] The prestressed hollow slab 200 is disposed in the space between the angle steel 112 and the upper flange 120 .

[0096] Specifically, when the cross-sectional height of the steel beam 100 is close to the height of the prestressed hollow slab 200, any one of the schemes in Example 2 to Example 4 can be selected for construction, which has strong operability and selectivity; when the cross-sectional height of the steel beam 100 is much larger than the prestressed hollow slab 200, it is necessary to use the angle steel 112 to build an installation platform for the prestressed hollow slab 200, that is, select the appropriate position of the web 110 to weld the angle steel 112 to form the supporting surface of the prestressed hollow slab 200, and then any one of the schemes in Example 2 to Example 4 can be selected for construction, and then fill the lower part of the angle steel 112 with fillers such as stone.

[0097] Furthermore, when a door opening 500 is provided at the upper portion of the drop-slab node connection structure, the steel beam 100 includes a first steel beam 510, a second steel beam 520 and a frame column 530;

[0098] The first steel beam 510 and the second steel beam 520 are respectively disposed on both sides of the frame column 530;

[0099] The first steel beam 510 is disposed at the lower portion of the door opening 500;

[0100] The first steel beam 510 is smaller than the second steel beam 520 .

[0101] Specifically, when the drop-plate node connection structure is applied to the door opening, the height of the web 110 can be appropriately lowered, and the steel beam 100 at this location needs to make way for the door opening 500 to form an unequal-height beam frame node, so that the installation height of the steel beam 100 at this location needs to be lower than the conventional position. Therefore, the steel beam 100 at this location is divided into two parts, namely the first steel beam 520 and the second steel beam 530, and the two are connected by a frame column 530 to balance the internal stress of the steel beam at this location; in addition, since the door opening positions of the upper and lower floors of the building are consistent, an integrated frame column 530 can be used at this location to penetrate the multi-story building and be longitudinally connected to the first steel beam 510 and the second steel beam 520 of the multi-story to save construction period.

[0102] In summary, Embodiments 2 to 4 are construction plans for conventional buildings, which can be selected according to actual conditions; Embodiment 5 is a construction plan for special buildings (i.e., buildings in which the cross-sectional height of the steel beam 100 is much larger than that of the prestressed hollow slab 200 and buildings with door openings). In Embodiment 5, the steel beam 100 needs to be adjusted in advance before being connected to the prestressed hollow slab 200 (i.e., the welding angle steel 112 in Embodiment 5 and the use of the frame column 530 to splice the first steel beam 510 and the second steel beam 520), and then an appropriate plan from Embodiments 2 to 4 is selected for installation.

[0103] This solution has at least the following beneficial effects:

[0104] This solution improves the indoor floor height by overlapping the prestressed hollow slab 200 with the lower flange 130, avoids the use of suspended ceilings, improves the aesthetics of the building interior, and facilitates the layout of ground pipelines.

[0105] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of each embodiment of the utility model.

Claims

1. A drop-plate node connection structure suitable for assembled steel structures, characterized in that: It comprises a steel beam (100) and a prestressed hollow slab (200); The steel beam (100) comprises a web (110) and a horizontally arranged upper flange (120) and a lower flange (130); Two ends of the web (110) are fixedly connected to the upper flange (120) and the lower flange (130) respectively; A plurality of the prestressed hollow slabs (200) are horizontally arranged on both sides of the steel beam (100); The lower portion of the prestressed hollow slab (200) overlaps the lower flange (130); The prestressed hollow plates (200) are fixed together by connecting pieces.

2. The drop-down node connection structure suitable for assembled steel structures according to claim 1 is characterized in that: The width of the upper flange (120) is smaller than the width of the lower flange (130).

3. The drop-down node connection structure applicable to assembled steel structures according to claim 2 is characterized in that: The overlap length between the prestressed hollow slab (200) and the lower flange (130) is greater than 80 mm.

4. The drop-down node connection structure applicable to assembled steel structures according to claim 3 is characterized in that: The gap between the prestressed hollow slab (200) and the web (110) and the gap between the prestressed hollow slabs (200) are filled with grouting material (300).

5. The drop-down node connection structure applicable to assembled steel structures according to claim 4 is characterized in that: The connecting member comprises a hole-carrying nail (410) and a vertical bolt (420); The hole-carrying nail (410) is arranged on the upper part of the prestressed hollow plate (200), and the tip of the hole-carrying nail (410) is inserted into the prestressed hollow plate (200); The vertical bolt (420) is plugged into the hole-carrying bolt (410) and the prestressed hollow plate (200) in sequence; The side of the vertical stud (420) away from the prestressed hollow slab (200) is fixed by bolts.

6. The drop-down node connection structure applicable to assembled steel structures according to claim 4 is characterized in that: The connecting member comprises a longitudinal steel bar (430) and an anchor bar ring nail (440); The web (110) is provided with a plurality of circular holes (111) arranged transversely; The anchor bar ring nail (440) is arranged on the upper part of the prestressed hollow plate (200), and the tip of the anchor bar ring nail (440) is inserted into the prestressed hollow plate (200); The anchor ring (441) of the anchor ring nail (440) is concentric with the circular hole (111); The longitudinal steel bars (430) are respectively plugged into the anchor ring (441) and the circular hole (111).

7. The drop-down node connection structure applicable to assembled steel structures according to claim 4 is characterized in that: The connecting member includes a horizontal peg (450); The horizontal bolts (450) are arranged in parallel on both sides of the web (110) and are plugged into the prestressed hollow slab (200).

8. The drop-down node connection structure applicable to assembled steel structures according to any one of claims 5 to 7, characterized in that: When the cross-sectional height of the steel beam (100) is much greater than that of the prestressed hollow slab (200), the steel beam (100) is provided with two webs (110); An angle steel (112) is respectively arranged on one side of the two web plates (110) away from the center of the steel beam (100); The prestressed hollow plate (200) is arranged in the space between the angle steel (112) and the upper flange (120).

9. The drop-down node connection structure applicable to assembled steel structures according to claim 8, characterized in that: When a door opening (500) is provided on the upper part of the drop-slab node connection structure, the steel beam (100) comprises a first steel beam (510), a second steel beam (520) and a frame column (530); The first steel beam (510) and the second steel beam (520) are respectively arranged on both sides of the frame column (530); The first steel beam (510) is arranged at the lower part of the door opening (500); The size of the first steel beam (510) is smaller than the size of the second steel beam (520).

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