CN205444492U - An H-shaped cantilever steel beam-column geometric section splicing structure - Google Patents

Abstract

The utility model discloses an H-shaped cantilever steel beam-column geometric section splicing structure, which adopts H-shaped steel splicing, including steel beams and steel columns. The beams are spliced together, and the splicing section of the cantilever beam and the frame beam is designed as an interactive Z-shaped or rectangular section structure. The cantilever beam and the frame beam are connected by a splicing plate, and the splicing plate is divided into two wings arranged at the top and bottom of the splicing section. Edge splices and two front and rear web splices. The utility model has obvious beneficial effects: the welding work at the joint of the cantilever beam and the frame beam is completed in the factory, thereby effectively avoiding the defects caused by on-site welding; saving the use of bolts, reducing the installation workload on site, Improve work efficiency, shorten cycle time and reduce project cost.

Description

An H-shaped cantilever steel beam-column geometric section splicing structure

technical field

The utility model belongs to the technical field of structural engineering, and relates to an H-shaped cantilever steel beam-column geometric section splicing structure.

Background technique

my country's "Code for Seismic Design of Buildings" and "Technical Regulations for Steel Structures of High-rise Civil Buildings" both recommend the form of beam-column connection with cantilever sections.

At present, there are two main methods for splicing cantilever steel beams: one is to splice the web of the cantilever beam and the web of the frame beam by using high-strength bolts, and weld the flange of the cantilever beam to the flange of the frame beam by on-site butt welding; the other is The frame beams are spliced together with the flanges and webs of the cantilever beams by using high strength bolts and splice plates. These splicing forms commonly used at present are designed according to the principle of equal strength, have good mechanical properties, and are widely used. The disadvantage of method 1 is that due to the need to weld on the construction site, limited by the environment and construction site conditions, the site welding workload is relatively large, the welding quality cannot be guaranteed, and it is easy to generate a large amount of residual stress at the weld. Brittle fractures are prone to occur under cyclic loading. The disadvantage of the second method is that the full bolt connection of the beam-to-column joint with the cantilever beam section requires a large number of bolts, and the on-site installation is complicated and inconvenient, which increases the project cost. These two methods are difficult to meet the needs of rapid and green construction of steel structures, and are not conducive to reducing the construction cost and shortening the construction period of prefabricated light steel structures.

Contents of the invention

Aiming at the deficiencies of the above-mentioned prior art, the utility model provides an H-shaped cantilever steel beam-column geometric cross-section splicing structure. The cross-sections of the cantilever beam and the frame beam are staggered, and are tightly joined after milling.

The technical scheme that the utility model adopts is:

An H-shaped cantilever steel beam-column geometric section splicing structure, including steel beams and steel columns, the steel beams are divided into cantilever beams and frame beams, the cantilever beams are welded on the steel columns, the cantilever beams and frame beams are spliced, and the cantilever beams and frame beams The splicing section is designed as an interactive Z-shaped or rectangular section structure, and the splicing section is closely staggered; the splicing ends of the cantilever beam and the frame beam are connected by splicing plates.

The splicing plates are divided into two flange splicing plates arranged up and down at the splicing section and two front and rear web splicing plates. At the joints of the sections, the webs of the steel beams are tightly connected, and the flanges of the steel beams are also tightly connected.

The flange splicing plate and the steel beam flange are welded together, and the upper and lower flange splicing plates and the upper and lower flanges of the steel beam are respectively provided with several connection holes, and the upper and lower flange splicing plates and the upper and lower flanges of the steel beam are respectively fixed and connected by several flange bolts. The distribution of bolts on the upper and lower flanges is arranged symmetrically with the middle vertical section center of the Z-shaped or rectangular section as the center point.

The web splicing plate and the web of the steel beam are provided with several connection holes and are connected by several web bolts. The web bolts are arranged symmetrically with the horizontal longitudinal section in the middle of the steel beam as the symmetrical plane, and the longitudinal horizontal line in the middle of the Z-shaped or rectangular section. The point on is set symmetrically to the center point.

The utility model takes the general three-dimensional coordinates as the direction indication, and the horizontal direction is X, the vertical direction is Y, and the vertical direction is Z.

The utility model has obvious beneficial effects: (1) The welding work at the joint of the cantilever beam and the frame beam is completed in the factory, thereby effectively avoiding the defects caused by on-site welding; On-site installation workload, improve work efficiency, shorten cycle time, and reduce project cost.

Description of drawings

Fig. 1 is a schematic structural view of Embodiment 1 of the present utility model.

Fig. 2 is a schematic structural view of spliced cantilever beams according to Embodiment 1 of the present invention.

Fig. 3 is a schematic structural view of spliced frame beams according to Embodiment 1 of the present invention.

Fig. 4 is a top sectional view of Embodiment 1 of the present utility model.

Fig. 5 is a bottom sectional view of Embodiment 1 of the present utility model.

Reference numerals: cantilever beam 1 , frame beam 2 , steel column 3 , splice plate 4 , flange splice plate 41 , web splice plate 42 , flange bolt 51 , web bolt 52 .

detailed description

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments, however, the scope of the utility model is not limited to the following embodiments.

Example 1:

An H-shaped cantilever steel beam-column geometric section splicing structure, including a steel beam and a steel column 3, the steel beam is divided into a cantilever beam 1 and a frame beam 2, the cantilever beam 1 is welded on the steel column 3, and the cantilever beam 1 and the frame beam 2 are spliced together , the splicing section of the cantilever beam 1 and the frame beam 2 is designed as an interactive Z-shaped section structure, and the splicing sections are closely staggered; the splicing ends of the cantilever beam 1 and the frame beam 2 are connected by splice plates 4 .

The splicing plate 4 is divided into two flange splicing plates 41 arranged up and down at the splicing section and two web splicing plates 42 front and rear. At the joints of the sections, the webs of the steel beams are tightly connected, and the flanges of the steel beams are also tightly connected.

The flange splicing plate 41 is welded to the steel beam flange, and the upper and lower flange splicing plates 41 and the upper and lower flanges of the steel beam are respectively provided with several connecting holes, and the upper and lower flange splicing plates 41 and the upper and lower flanges of the steel beam are respectively passed through several flange bolts 51 fixed connections. The distribution of the upper and lower flange bolts 51 is arranged symmetrically with the middle vertical section center of the Z-shaped section as the center point.

The number of flange bolts 51 used in the upper and lower flange splicing plates 41 is 8 respectively.

The web splicing plate 42 and the web of the steel beam are provided with connection holes and are connected by web bolts 52. The web bolts 52 are arranged symmetrically with the middle horizontal longitudinal section of the steel beam as a symmetrical plane, and the point on the middle longitudinal horizontal line of the Z-shaped section Centrosymmetric set for the center point.

The connecting holes correspond to the web bolts 52 .

Flange bolts 51 and web bolts 52 are high-strength bolts processed by milling.

The welding work of the splicing connection between the cantilever beam 1 and the frame beam 2 in this embodiment is completed in the factory, thereby effectively avoiding the defects caused by on-site welding; the flange bolts 51 and the web bolts 52 are made of High-strength bolts improve the quality of splicing work.

Example 2:

The splicing section of the arm beam 1 and the frame beam 2 is designed as an interactively fitted rectangular section structure, and the rest are the same as in the first embodiment.

Claims (5)

1. An H-shaped cantilever steel beam-column geometric section splicing structure, using H-shaped steel splicing, including steel beams and steel columns 3, the steel beams are divided into cantilever beams (1) and frame beams (2), and the cantilever beams 1 are welded on the steel columns ( 3) above, the cantilever beam (1) and the frame beam (2) are spliced together, which is characterized in that the splicing section of the cantilever beam (1) and the frame beam (2) is designed as an interactive Z-shaped or rectangular section structure, The cantilever beam (1) and the frame beam (2) are connected by a splicing plate (4), which is divided into two flange splicing plates (41) arranged on the upper and lower sides of the splicing section and two front and rear web splicing plates board (42). 2. An H-shaped cantilever steel beam-column geometric section splicing structure according to claim 1, characterized in that the flange splicing plate (41) is welded to the steel beam flange, and the upper and lower flange splicing plates (41) and the steel beam The upper and lower flanges are respectively provided with several connecting holes, and the upper and lower flange splicing plates (41) and the upper and lower flanges of the steel beam are respectively fixedly connected by several flange bolts (51). 3. An H-shaped cantilever steel beam-column geometric section splicing structure according to claim 2, characterized in that the distribution of the upper and lower flange bolts (51) is centered on the middle vertical section center of the Z-shaped or rectangular section Point center symmetric setting. 4. An H-shaped cantilever steel beam-column geometric cross-section splicing structure according to claim 1, characterized in that the web splicing plate (42) and the steel beam web are provided with several connection holes and pass through several webs Bolt (52) connection. 5. An H-shaped cantilever steel beam-column geometric section splicing structure according to claim 4, characterized in that, the several web bolts (52) are arranged symmetrically with the horizontal longitudinal section in the middle of the steel beam as a symmetrical plane, Set symmetrically with the point on the longitudinal horizontal line in the middle of the Z-shaped or rectangular section as the center point.