Novel steel bar truss floor support plate

Abstract

The utility model provides a novel steel bar truss floor support plate which comprises a steel bar truss and a bottom template, an upper chord steel bar and a web member steel bar in the steel bar truss are connected through a welding plate, and the web member steel bar is connected with the bottom template through a lower chord steel bar. A supporting frame is arranged between the web member steel bars on the two sides of the upper chord steel bar, and the top end and the bottom end of the supporting frame are connected with the additionally-welded plate and the bottom formwork respectively. The novel steel bar truss floor support plate is stable in structure and connection, the welding connection area is increased through the additionally-arranged welding plates, the supporting frames and other structures, the shape structures of the supporting structures, the welding plates and the supporting frames are controlled, and the production cost and the total weight of the steel bar truss floor support plate are controlled on the premise that the requirement for stable connection is met.

Description

Technical Field

[0001] The utility model relates to the technical field of building materials, in particular to a novel steel bar truss floor deck. Background Art

[0002] Steel truss floor deck is a new building material that has emerged in recent years and has been widely used in the construction of various steel structures and municipal (highways, bridges). Steel truss floor deck includes steel trusses and bottom formwork connected by resistance spot welding. After pouring concrete and curing, the steel trusses are left in the concrete structure to improve the structural strength of the concrete structure, while the bottom formwork can be disassembled to achieve the purpose of reuse and reduce construction costs.

[0003] At present, the web bars and the upper chord bars in the existing steel trusses are connected by welding. However, the welding point area between the web bars and the upper chord bars is small. If the upper chord bars are bumped during transportation and installation, it is very easy to cause the welding points to crack, which seriously affects its overall strength and service life. Utility Model Content

[0004] The utility model aims to provide a novel steel bar truss floor deck to solve the above-mentioned problems.

[0005] The technical solution of the utility model includes: a novel steel bar truss floor deck, which includes a steel bar truss and a bottom formwork, the upper chord steel bars and the web steel bars in the steel bar truss are connected by a welded plate, and the web steel bars and the bottom formwork are connected by a lower chord steel bars.

[0006] Preferably, the welded plates are located on both sides of the upper chord reinforcement, and their inclination angles relative to the bottom formwork are the same as the inclination angles of the web reinforcements relative to the bottom formwork.

[0007] Preferably, the additional welded plate is as long as the upper chord steel bar, and the width of the additional welded plate is 1 / 4 to 1 / 2 of the length of the web bar steel bar.

[0008] Preferably, a support frame is provided between the web reinforcements on both sides of the upper chord reinforcements, and the top and bottom ends of the support are respectively connected to the welding plate and the bottom formwork.

[0009] Preferably, the support frame includes a top support plate, a bottom support plate and a vertical support member connecting the two, the positions of the top support plate and the bottom support plate correspond, the welded plate is fixed to both ends of the top support plate along the width direction, and the bottom support plate is consistent in height with the bottom surface of the lower chord steel bar.

[0010] Preferably, the vertical support members are rods or plates, and a plurality of the vertical support members are evenly distributed along the length direction of the upper chord steel bars.

[0011] Preferably, horizontal connecting bars are provided at both ends of the steel bar truss in the length direction, and both ends of the horizontal connecting bars are respectively connected to the lower chord steel bars on both sides of the upper chord steel bars.

[0012] Preferably, a vertical supporting rib is provided in the middle of the horizontal connecting rib, and the top of the vertical supporting rib is fixedly connected to the upper chord steel bar.

[0013] The beneficial effects of the utility model are: providing a new type of steel truss floor deck with stable structure and stable connection, increasing the welding connection area and the supporting structure by adding structures such as welding plates and support frames, controlling the shape structure of welding plates and support frames, and controlling the production cost and the total weight of the steel truss floor deck while ensuring stable connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view of an embodiment of the utility model;

[0015] Figure 2 It is a side view of an embodiment of the utility model.

[0016] In the figure:

[0017] 10. Steel bar truss; 11. Upper chord steel bar; 12. Web bar steel bar; 13. Lower chord steel bar;

[0018] 20. Bottom template;

[0019] 30. Add welding plate;

[0020] 40. Support frame; 41. Top support plate; 42. Bottom support plate; 43. Vertical support member;

[0021] 50. Horizontal connecting ribs;

[0022] 60. Vertical support reinforcement. DETAILED DESCRIPTION

[0023] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solution 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 of 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.

[0024] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0026] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0027] Reference Figure 1-2The present embodiment provides a novel steel truss floor deck, which includes a steel truss 10 and a bottom formwork 20. The steel truss 10 includes an upper chord steel bar 11, a web steel bar 12 and a lower chord steel bar 13. The upper chord steel bar 11 is arranged in parallel with the lower chord steel bar 13. A lower chord steel bar 13 is arranged on both sides of the projection of the upper chord steel bar 11 on the bottom formwork 20. The two lower chord steel bars 13 are respectively connected to the upper chord steel bar 11 through two groups of web steel bars 12. When viewed along the radial section of the upper chord steel bar 11, the upper chord steel bar 11 and the two lower chord steel bars 13 are three vertices, which are respectively connected to the web steel bars 12 and the bottom formwork 20 to form a triangular stable structure, thereby ensuring the structural stability of the steel truss floor deck during concrete pouring; the web steel bars 12 are wrapped The invention comprises a plurality of continuous V-shaped parts formed in one piece, or a plurality of steel bars bent into a V-shape and evenly distributed along the length direction of the upper chord steel bar 11. A welding plate 30 is provided on the side of the top of the web steel bar 12 close to the upper chord steel bar 11. The web steel bar 12 and the upper chord steel bar 11 are respectively welded and fixed on the plate surfaces on both sides of the welding plate 30. The web steel bar 12 and the welding plate 30 form a strip welding part in the same direction as the extension direction of the top of the web steel bar 12. The upper chord steel bar 11 and the welding plate 30 form a strip welding part in the same direction as the length direction of the upper chord steel bar 11. Compared with the point welding part of the web steel bar 12 and the upper chord steel bar 11 in the traditional technology, the area of ​​the welding part is greatly increased, and the connection stability of the web steel bar 12 and the upper chord steel bar 11 is improved.

[0028] According to the distribution of the web reinforcement 12, an additional welding plate 30 is provided on each side of the upper chord reinforcement 11, and its inclination angle relative to the bottom template 20 is the same as the inclination angle of the web reinforcement 12 relative to the bottom template 20, so as to fit the connection angle of the web reinforcement 12 and the upper chord reinforcement 11, and avoid the spacing between the web reinforcement 12 and the upper chord reinforcement 11 during welding exceeding the thickness of the additional welding plate 30 excessively, or being insufficient to insert the additional welding plate 30, resulting in the need to bend the web reinforcement 12, which has an adverse effect on the structural strength of the web reinforcement 12.

[0029] In order to firmly connect each web reinforcement 12 with the upper chord reinforcement 11, the additional welding plate 30 should be the same length as the upper chord reinforcement 11. In order to save costs and reduce the total weight of the steel truss 10, the width of the additional welding plate 30 can be configured to be 1 / 4 to 1 / 2 of the length of the web reinforcement 12. Under the premise of ensuring the length of the strip welded portion formed by the web reinforcement 12 and the additional welding plate 30, the above-mentioned cost and total weight control requirements are met.

[0030] In order to further improve the structural stability of the steel truss 10, a support frame 40 can also be set between the web steel bars 12 on both sides of the upper chord steel bars 11, and the top and bottom ends of the support are respectively connected to the welded plate 30 and the bottom formwork 20 to form a stable support for the welded plate 30.

[0031] The shape and structure of the support frame 40 can be configured according to actual use requirements, and no specific limitation is made here. Only some feasible implementation schemes are exemplified. For example, the support frame 40 includes a top support plate 41, a bottom support plate 42 and a vertical support member 43 connecting the two. The positions of the top support plate 41 and the bottom support plate 42 correspond to each other. The welding plate 30 is fixed to both ends of the top support plate 41 along the width direction, and the bottom support plate 42 is at the same height as the bottom surface of the lower chord steel bar 13. The side of the top support plate 41 and the welding plate 30 form a strip welding part in the same direction as the length direction of the top support plate 41, which can effectively increase the welding area. At the same time, the top support plate 41 is connected with the welding plates 30 on both sides to form a triangular stable structure, which can effectively improve the connection stability and support stability.

[0032] The vertical support members 43 can be configured as rods or plates. A plurality of vertical support members 43 are evenly distributed along the length direction of the upper chord steel bars 11 to provide a stable support for the top support plate 41 while reducing the total weight.

[0033] In addition, in the present embodiment, horizontal connecting ribs 50 are provided at both ends of the steel truss 10 in the length direction, and the two ends of the horizontal connecting ribs 50 are respectively connected to the lower chord steel bars 13 on both sides of the upper chord steel bars 11, and a vertical supporting rib 60 is provided in the middle of the horizontal connecting rib 50, and the top of the vertical supporting rib 60 is fixedly connected to the upper chord steel bars 11, thereby improving the integrity and stability of the steel truss 10.

[0034] Compared with the prior art, the beneficial effects of the utility model are: providing a new type of steel truss floor deck with stable structure and stable connection, increasing the welding connection area and the supporting structure by adding structures such as the welding plate 30 and the support frame 40, controlling the shape structure of the welding plate 30 and the support frame 40, and controlling the production cost and the total weight of the steel truss floor deck while ensuring stable connection.

[0035] The above are preferred implementations of the present utility model. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present utility model. These improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A new type of steel bar truss floor deck, characterized in that: It comprises a steel bar truss and a bottom formwork, wherein the upper chord steel bars and the web steel bars in the steel bar truss are connected via a welded plate, and the web steel bars and the bottom formwork are connected via a lower chord steel bars.

2. The new steel bar truss floor deck according to claim 1 is characterized in that: The welded plates are located on both sides of the upper chord reinforcement, and their inclination angles relative to the bottom formwork are the same as the inclination angles of the web reinforcement relative to the bottom formwork.

3. The new steel bar truss floor deck according to claim 1 or 2, characterized in that: The additional welded plate is equal in length to the upper chord steel bar, and the width of the additional welded plate is 1 / 4 to 1 / 2 of the length of the web bar steel bar.

4. The new steel bar truss floor deck according to claim 3 is characterized in that: A support frame is provided between the web reinforcements on both sides of the upper chord reinforcements, and the top and bottom ends of the support frame are respectively connected to the welding plate and the bottom formwork.

5. The new steel bar truss floor deck according to claim 4 is characterized in that: The support frame includes a top support plate, a bottom support plate and a vertical support member connecting the two. The positions of the top support plate and the bottom support plate correspond. The welded plates are fixed to both ends of the top support plate along the width direction. The bottom support plate is consistent in height with the bottom surface of the lower chord steel bars.

6. The new steel bar truss floor deck according to claim 5 is characterized in that: The vertical support members are rod members or plate members, and a plurality of the vertical support members are evenly distributed along the length direction of the upper chord steel bars.

7. The new steel bar truss floor deck according to any one of claims 1-2 and 4-6, characterized in that: Horizontal connecting bars are provided at both ends of the steel bar truss in the length direction, and the two ends of the horizontal connecting bars are respectively connected to the lower chord steel bars at both sides of the upper chord steel bars.

8. The new steel bar truss floor deck according to claim 7 is characterized in that: A vertical supporting rib is provided in the middle of the horizontal connecting rib, and the top of the vertical supporting rib is fixedly connected to the upper chord steel bar.

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