Transverse truss device of section steel and ultra-high performance concrete composite beam

Abstract

The utility model discloses a transverse truss device of a section steel and ultra-high performance concrete composite beam, which comprises a truss arranged between steel-concrete composite beams, the truss consists of horizontal supporting rods and inclined supporting rods, connecting steel plates are fixedly arranged at the end parts of the horizontal supporting rods, transverse partition plates are arranged on the two sides of a web plate of each steel-concrete composite beam, and the inclined supporting rods are arranged at the two ends of the web plate of each steel-concrete composite beam. The steel-concrete composite beam is provided with pre-embedded steel plates on the side portions of the transverse partition plates, connecting pieces fixedly connected with the pre-embedded steel plates are arranged on the connecting steel plates, U-shaped anchor bars are symmetrically and fixedly arranged on the pre-embedded steel plates, and the anchor bars are anchored in the transverse partition plates on the same side. The utility model aims to provide the anti-toppling transverse truss device which plays a supporting role between adjacent steel-concrete composite beams, is convenient to operate and cannot damage the steel-concrete composite beams.

Description

Technical Field

[0001] The utility model relates to the technical field of water conservancy project construction, in particular to a transverse truss device of a composite beam of section steel and ultra-high performance concrete. Background Art

[0002] During the construction of water diversion tunnels, many large-diameter circular working wells need to be built. In order to meet the needs of the operation period after water is delivered, such working wells are usually equipped with a roof structure of the top surface layer to meet the acceptance requirements. In order to speed up the construction progress, the top surface layer of the working well is constructed by using steel ultra-high performance concrete composite beams, UHPC non-removal formwork, and cast-in-place panel structure. The characteristics of this steel-concrete composite beam are that it belongs to a narrow flange plate type I-beam, with grooves reserved on both sides of the top of the upper flange plate, and the UHPC non-removal formwork is set up in the grooves of the adjacent composite beams, and then the overall cast-in-place panel concrete is poured. The advantage of this structure is that it is simple to operate, and there is no need to erect or dismantle brackets or install or dismantle bottom formwork, but its disadvantage is that the upper and lower flange plates are narrow, and the distance between adjacent composite beams is large, that is, it is easy to tip over during the beam erection process of the composite beam. In addition, adjacent composite beams are usually connected by welding with horizontal rod supports and embedded steel plates at the diaphragm. Not only is the welding speed slow, but the heat generated by welding can also easily damage the ultra-high performance concrete. Therefore, there is an urgent need for an anti-dumping transverse truss device that plays a supporting role between adjacent steel-concrete composite beams, is easy to operate, and does not damage the steel-concrete composite beams. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and to provide an anti-dumping transverse truss device which plays a supporting role between adjacent steel-concrete composite beams and is easy to operate without damaging the steel-concrete composite beams.

[0004] In order to achieve the above object, the utility model is implemented through the following technical solutions:

[0005] A transverse truss device for a composite beam of section steel and ultra-high performance concrete comprises a truss arranged between the steel-concrete composite beams, the truss consists of horizontal struts and diagonal struts, the ends of the horizontal struts are fixedly provided with connecting steel plates, cross diaphragms are provided on both sides of the web of the steel-concrete composite beam, the steel-concrete composite beam is provided with embedded steel plates on the sides of the cross diaphragms, the connecting steel plates are provided with connectors fixedly connected to the embedded steel plates, each embedded steel plate is symmetrically fixedly provided with a U-shaped anchor bar, and each anchor bar is anchored in the cross diaphragm on the same side.

[0006] Furthermore, the hole in the embedded steel plate is pre-set with a sleeve which is embedded in the steel-concrete composite beam and is threadedly matched with the connecting piece, and the bottom of the sleeve is in a closed state.

[0007] Furthermore, an adjusting pad is provided between the connecting steel plate and the embedded steel plate, and a long hole is provided on the adjusting pad.

[0008] Compared with the prior art, the utility model has the following beneficial effects:

[0009] The utility model has a simple structure, saves a lot of manpower compared with the traditional welding method, speeds up the construction progress, has good safety and reliability, and the trusses erected between adjacent steel-concrete composite beams can not only play a connecting role, but also use the spacing between adjacent steel-concrete composite beams to support each other, thereby preventing the composite beams from lateral displacement or tipping over. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the utility model;

[0011] Figure 2 It is a structural schematic diagram of the truss in the utility model;

[0012] Figure 3 It is a structural schematic diagram of the adjusting pad in the utility model;

[0013] Figure 4 It is a structural schematic diagram of the embedded steel plate in the utility model.

[0014] Reference numerals:

[0015] 1-steel-concrete composite beam, 2-cross diaphragm, 3-horizontal brace, 4-embedded steel plate, 5-adjusting pad, 6-connecting piece, 7-diagonal brace, 8-anchor bar, 9-sleeve. DETAILED DESCRIPTION

[0016] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0017] like Figures 1 to 4 As shown, a transverse truss device of a steel and ultra-high performance concrete composite beam includes a truss arranged between steel-concrete composite beams 1, the truss consists of horizontal struts 3 and diagonal struts 7, the ends of the horizontal struts 3 are fixedly provided with connecting steel plates, cross diaphragms 2 are provided on both sides of the web of the steel-concrete composite beam 1, the steel-concrete composite beam 1 is provided with embedded steel plates 4 on the sides of the cross diaphragms 2, and connecting pieces 6 fixedly connected to the embedded steel plates 4 are provided on the connecting steel plates, and U-shaped anchor bars 8 are symmetrically fixedly provided on each embedded steel plate 4, and each anchor bar 8 is anchored in the cross diaphragm 2 on the same side.

[0018] The hole on the embedded steel plate 4 is pre-set with a sleeve 9 embedded in the steel-concrete composite beam 1 and threadedly matched with the connecting member 6, and the bottom of the sleeve 9 is in a closed state. The connecting member 6 can be a connecting bolt. The sleeve 9 is pre-set on the embedded steel plate 4, so that the connecting member 6 can connect and fix the embedded steel plate 4 and the connecting steel plate without damaging the steel-concrete composite beam 1, and is convenient for assembly operation. The bottom of the sleeve 9 is closed to prevent concrete from clogging the bottom end of the sleeve 9.

[0019] Among them, an adjusting pad 5 is arranged between the connecting steel plate and the embedded steel plate 4, and a long hole is arranged on the adjusting pad 5. The long hole can be an elliptical hole or an elliptical long flat hole, so that the adjusting pad 5 can be leveled between the connecting steel plate and the embedded steel plate 4.

[0020] The construction process of the utility model is as follows: first, the steel bar binding, transverse diaphragm 2, embedded steel plate 4 installation, formwork installation and concrete pouring of the composite beam 1 of steel section and UHPC ultra-high performance concrete are carried out in the prefabrication area. During the construction, the installation of the embedded steel plate 4 and the concrete pouring should be carefully checked to ensure that the outer surface of the embedded steel plate 4 is flush with the concrete surface of the transverse diaphragm 2 after the beam body is demolded. At the same time, the seamless round steel pipe and the connecting steel plate are cut and welded into horizontal struts 3, and the horizontal struts 3 are connected with the diagonal struts 7 to form a truss. Then, after the weld quality inspection is passed, a layer of red lead and two layers of paint are applied to the exposed parts of the embedded steel plate 4, horizontal struts 3 and diagonal struts 7 of the beam body to prevent surface rust. Finally, after the steel-concrete composite beam 1 is hoisted into place, the completed horizontal struts 3 are tightly connected to the embedded steel plate 4 through the connector 6 and the adjustment pad 5. U-shaped anchor bars 8 and sleeves 9 are welded on the embedded steel plate 4. The sleeves 9 are used to threadably cooperate with the connectors 6 on the steel plates connected to the ends of the trusses to form a primary fixation between the trusses and the steel-concrete composite beams 1. The anchor bars 8 are pre-anchored into the diaphragms 2 on the same side to form an anchor connection between the embedded steel plate 4 and the diaphragms 2, indirectly forming a secondary fixation between the trusses and the diaphragms 2, thereby limiting the lateral movement of the steel-concrete composite beams 1.

[0021] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. 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 transverse truss device of a composite beam of profiled steel and ultra-high performance concrete, characterized in that: The invention comprises a truss arranged between steel-concrete composite beams (1), the truss comprising a horizontal brace (3) and an oblique brace (7), the ends of the horizontal brace (3) are fixedly provided with a connecting steel plate, the webs of the steel-concrete composite beam (1) are provided with a transverse diaphragm (2) on both sides, the steel-concrete composite beam (1) is provided with an embedded steel plate (4) on the side of the transverse diaphragm (2), the connecting steel plate is provided with a connecting piece (6) connected and fixed to the embedded steel plate (4), each embedded steel plate (4) is symmetrically fixedly provided with a U-shaped anchor bar (8), and each anchor bar (8) is anchored in the transverse diaphragm (2) on the same side.

2. A transverse truss device of a composite beam of profiled steel and ultra-high performance concrete according to claim 1, characterized in that: The hole in the embedded steel plate (4) is pre-set with a sleeve (9) embedded in the steel-concrete composite beam (1) and threadedly matched with the connecting piece (6), and the bottom of the sleeve (9) is in a closed state.

3. The transverse truss device of a composite beam of profiled steel and ultra-high performance concrete according to claim 1, characterized in that: An adjusting pad (5) is arranged between the connecting steel plate and the embedded steel plate (4), and a long hole is arranged on the adjusting pad (5).

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