Connecting structure of newly-added cantilever equipment platform and original concrete structure

Abstract

The utility model belongs to the technical field of industrial and civil building structure design, and particularly relates to a connecting structure of a newly-added cantilever equipment platform and an original concrete structure, which can simplify construction difficulty, reduce influence on the original structure and ensure stability. First connecting steel plates are arranged at the connecting position of the cantilever steel beam and the concrete column and the connecting position of the vertical inclined support and the concrete column, the first connecting steel plates are welded to reinforcing steel bars implanted into the concrete column, second connecting steel plates perpendicular to the first connecting steel plates are welded to the positions, at the cantilever steel beam, of the first connecting steel plates, and the cantilever steel beam is welded to the second connecting steel plates. One end of the vertical inclined support is directly welded with the first connecting steel plate, and the other end is welded with the bottom of the cantilever steel beam; two primary and secondary beams are arranged between every two adjacent cantilever steel beams, small secondary beams are arranged between every two corresponding primary and secondary beams at intervals, horizontal inclined supports are arranged between the adjacent small secondary beams and between the small secondary beams and the cantilever steel beams, and the primary and secondary beams and the cantilever steel beams, the small secondary beams and the primary and secondary beams and the two ends of the horizontal inclined supports are in hinged connection.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of industrial and civil building structure design, concretely is a kind of connecting structure of newly added cantilever equipment platform and original concrete structure. BACKGROUND

[0002] With the industrial structure adjustment and transformation upgrading of our country in these years, in the development transformation process of factory, the use area of original structure workshop often cannot meet the use requirement of enterprise reform expansion, at this time, the reform and upgrading of original structure become the primary link of factory development.

[0003] In the case where the building function of original structure is basically perfect, the method of demolishing original structure and building new one is obviously not economical, usually we first consider reforming on original structure, expand use area to meet the use area requirement needed in the development transformation of factory. One of the methods is to increase use area by newly added cantilever steel platform, but in traditional method, the connection between cantilever steel beam and original structure concrete column by fixed connection will lead to very dense planting of beam-column connection node, and the construction difficulty is great, and too many planting of reinforcement also has great influence on original structure. SUMMARY

[0004] In order to solve the above technical problems, the utility model provides a kind of connecting structure of newly added cantilever equipment platform and original concrete structure, it can simplify construction difficulty, reduce the influence on original structure, ensure stability.

[0005] Its technical scheme is as follows: a kind of connecting structure of newly added cantilever equipment platform and original concrete structure, it includes concrete column, characterized in that, the side of the concrete column is equipped with cantilever steel beam, the lower part of the cantilever steel beam is provided with vertical inclined support, the connection between the cantilever steel beam and the concrete column, the connection between the vertical inclined support and the concrete column is provided with first connecting steel plate, the first connecting steel plate is welded with the reinforcement implanted in the concrete column, the first connecting steel plate on the cantilever steel beam is welded with the second connecting steel plate perpendicular to it, the cantilever steel beam is welded with the second connecting steel plate, one end of the vertical inclined support is directly welded with the first connecting steel plate, and the other end is welded with the bottom of the cantilever steel beam;Two main secondary beams are provided between adjacent two cantilever steel beams, small secondary beams are provided between corresponding two main secondary beams, horizontal inclined supports are provided between adjacent small secondary beams and between small secondary beams and cantilever steel beams, the main secondary beam and the cantilever steel beam, the small secondary beam and the main secondary beam, and the horizontal inclined support are hingedly connected at both ends.

[0006] Further characterized in that, the cantilever steel beam is provided with first stiffening rib, and the web of the main secondary beam is hingedly connected with the first stiffening rib.

[0007] The main secondary beam is provided with a second stiffening rib, and the web of the small secondary beam is hinged to the second stiffening rib; a third connecting steel plate horizontally arranged is welded to the web of the main secondary beam at the second stiffening rib, and the two ends of the horizontal inclined support are hinged to the third connecting steel plate.

[0008] After the utility model is adopted, the cantilever steel beam and the concrete column are hinged and connected, and then the cantilever steel beam and the concrete column are connected through the vertical inclined support, so that a vertical plane stable structure system is formed by the cantilever steel beam, the vertical inclined support and the concrete column, the cantilever steel beam is connected through the main secondary beam in the horizontal direction, the small secondary beam is arranged between the main secondary beams, horizontal inclined supports are arranged between the beams to form a plane truss system, so that a stable structure system is also formed in the horizontal plane, and the structure system of the whole cantilever platform is stable, most of the whole connecting structure is in the form of hinge, the construction difficulty is reduced, only steel bars need to be implanted at the cantilever steel beam and the vertical inclined support, the influence on the original structure is reduced, and the structural stability is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 It is the overall layout of the utility model;

[0010] Figure 2 It is the main view of the connection of the cantilever steel beam, the vertical inclined support and the concrete column;

[0011] Figure 3 It is the side view of the first connecting steel plate;

[0012] Figure 4 It is the schematic view of the connection of the cantilever steel beam and the main secondary beam;

[0013] Figure 5 It is the schematic view of the connection of the main secondary beam, the small secondary beam, the horizontal inclined support and the third connecting steel plate;

[0014] Figure 6 It is Figure 5 It is the A-A section view. DETAILED DESCRIPTION

[0015] See Figures 1 to 6As shown, a new cantilever equipment platform and the connecting structure of the original concrete structure, which comprises a concrete column 1, a cantilever steel beam 2 is installed on the side of the concrete column 1, a vertical inclined support 3 is arranged at the lower part of the cantilever steel beam 2, a first connecting steel plate 4 is arranged at the connecting part of the cantilever steel beam 2 and the concrete column 1 and the connecting part of the vertical inclined support 3 and the concrete column 1, the first connecting steel plate 4 is welded with the steel bar 5 implanted in the concrete column 1, the second connecting steel plate 6 perpendicular to the first connecting steel plate 4 is welded on the first connecting steel plate 4, the cantilever steel beam 2 and the second connecting steel plate 6 are welded, one end of the vertical inclined support 3 is directly welded with the first connecting steel plate 4 and the other end is welded with the bottom of the cantilever steel beam 2. When installing, first implant the steel bar 5 in the concrete column 1, then connect the first connecting steel plate 4 with the implanted steel bar 5 through the hole plug welding, weld the second connecting steel plate 6 on the first connecting steel plate 4 for connecting with the cantilever steel beam 2, the second connecting steel plate 6 is divided into left and right two parts and is welded with the cantilever steel beam 2 respectively, the connecting mode of the vertical inclined support 3 and the concrete column 1 is similar, the difference is that it is directly welded with the first connecting steel plate 4 and the upper part is welded with the cantilever steel beam 2 to form a stable structure system in the vertical plane. According to the needs, the cantilever steel beam 2 can increase the stiffener 13 at the connecting position of the upper part of the vertical inclined support 3.

[0016] Two main and secondary beams 7 are arranged between the adjacent two cantilever steel beams 2, small secondary beams 8 are arranged between the corresponding two main and secondary beams 7, horizontal inclined supports 9 are arranged between the adjacent small secondary beams 8 and between the small secondary beams 8 and the cantilever steel beams 2, the main and secondary beams 7 and the cantilever steel beams 2, the small secondary beams 8 and the main and secondary beams 7, and the two ends of the horizontal inclined supports 9 are all hinged connections, the specific connection mode is as follows: the first stiffener 10 is arranged on the cantilever steel beam 2, the web of the main and secondary beam 7 is hinged with the first stiffener 10; the second stiffener 11 is arranged on the main and secondary beam 7, the web of the small secondary beam 8 is hinged with the second stiffener 11; the third connecting steel plate 12 is welded on the web of the main and secondary beam 7 at the second stiffener 11, the two ends of the horizontal inclined support 9 are hinged with the third connecting steel plate 12, the cantilever steel beams 2 are connected through the main and secondary beams 7 in the horizontal direction, the small secondary beams 5 are arranged between the main and secondary beams 7 according to the equipment position, and finally the horizontal inclined supports 9 are arranged between the beams to form a planar truss system, which also forms a stable structure system in the horizontal plane.

[0017] During the installation, first, the calculation model is built according to the original structural drawing, the overhanging platform structural members and loads are added to the original structural model, the steel beam and support section sizes are calculated, and the influence of the newly added platform on the original structure is reviewed; the axial force and shear force of the overhanging beam and vertical support are extracted from the calculation model; the number and specifications of the anchor bars at the beam-column connection joint and the support-column connection joint are calculated according to the extracted loads; the section size of the horizontal support is determined according to the horizontal force borne by the overhanging platform and the relevant provisions of the specification; the construction drawing is drawn according to the above calculation results; the technical briefing is carried out on site to explain the design intent and related construction matters needing attention to the site; the surface of the steel member and the concrete column is cleaned before the anchor bar is planted on site to ensure that they are closely attached; a place outside the design range is selected to carry out the anchor bar pulling and shearing test to determine that the actual strength of the anchor bar can meet the design requirements; the anchor bar is planted according to the design requirements, the steel plate and the anchor bar are connected through the perforated plug welding, and the foundation work of the overhanging platform is completed; finally, the component installation of the steel platform is completed.

Claims

1. A connecting structure of a newly added cantilever equipment platform and an original concrete structure, comprising a concrete column, characterized in that, The side of the concrete column is provided with a cantilever steel beam, the lower part of the cantilever steel beam is provided with a vertical inclined support, the connection part of the cantilever steel beam and the concrete column and the connection part of the vertical inclined support and the concrete column are provided with a first connecting steel plate, the first connecting steel plate is welded with the steel bar implanted in the concrete column, the first connecting steel plate at the cantilever steel beam is welded with a second connecting steel plate perpendicular to the first connecting steel plate, the cantilever steel beam and the second connecting steel plate are welded, one end of the vertical inclined support is directly welded with the first connecting steel plate and the other end is welded with the bottom of the cantilever steel beam; two main and secondary beams are arranged between two adjacent cantilever steel beams, two corresponding main and secondary beams are arranged at intervals, small secondary beams are arranged between adjacent small secondary beams and between the small secondary beams and the cantilever steel beam, horizontal inclined supports are arranged between the main and secondary beams and the cantilever steel beam, between the small secondary beams and the main and secondary beams, and the two ends of the horizontal inclined supports are hingedly connected.

2. The connecting structure of the newly added cantilever equipment platform and the original concrete structure according to claim 1, characterized in that, The cantilever steel beam is provided with a first stiffening rib, and the web of the main and secondary beams is hingedly connected with the first stiffening rib.

3. The connecting structure of the newly added cantilever equipment platform and the original concrete structure according to claim 1, characterized in that, The main and secondary beams are provided with a second stiffening rib, and the web of the small secondary beam is hingedly connected with the second stiffening rib; at the second stiffening rib, a third connecting steel plate arranged horizontally is welded on the web of the main and secondary beams, and the two ends of the horizontal inclined support are hingedly connected with the third connecting steel plate.

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