Unilateral buckling restraint-type steel-beam-column connecting joint and steel structure building
A technology of buckling restraint and connecting nodes, applied in the direction of building and building structure, can solve the problems of secondary damage of steel structure, easy cracking of welds, difficulty in repair work, etc., to achieve easy construction, saving consumption and reducing assembly costs. Effect
Active Publication Date: 2017-11-10
SHANDONG UNIV
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AI Technical Summary
Problems solved by technology
Although this joint is widely used, it has the following disadvantages: there are on-site construction welds, many construction procedures, and the quality of welding is difficult to control; there is serious stress concentration at the weld, and the weld is easy to crack under earthquake load
However, in many existing full-bolt steel beam-to-column connection methods, since the connecting parts of the upper flange of the steel beam are buried in the floor concrete, if the connecting parts of the upper flange of the steel beam are damaged in the earthquake, the covering parts of the steel beam must be removed during repair. Concrete near the upper flange connector of the beam, which brings great difficulty to the repair work, and at the same time, it is easy to cause secondary damage to the steel structure
Method used
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example 1
[0049] Such as Figure 5 As shown, the end of the third connecting plate 41 adopts an enlarged cross-section, the weakened area 43 in the middle of the third connecting plate 41 adopts circular arc and straight line cutting, and the third group of bolt holes 411 are arranged in a staggered manner.
example 2
[0051] Such as Figure 6 As shown, the end of the first connecting plate 41 adopts a non-expanded section form, the weakened area 43 in the middle of the first connecting plate 41 adopts straight and oblique cuts, and the third group of bolt holes 411 are arranged in a staggered arrangement.
example 3
[0053] Such as Figure 7 As shown, the end of the first connecting plate 41 adopts a non-enlarged cross section, the weakened area 43 in the middle of the first connecting plate 41 adopts oblique cutting, and the third group of bolt holes 411 are arranged in a staggered manner.
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The invention discloses a unilateral buckling restraint-type steel-beam-column connecting joint and a steel structure building, and belongs to the field of steel building structures. The unilateral buckling restraint-type steel-beam-column connecting joint comprises a steel beam and a steel column, an upper flange connecting piece and a lower flange connecting piece are arranged at the joint of the steel beam and the steel column, and the upper flange connecting piece comprises a horizontally arranged first connecting plate and a vertically arranged second connecting plate connected with the end portion of the first connecting plate; the first connecting plate is connected with an upper flange of the steel beam, the second connecting plate is connected with a flange of the steel column, and a plate hinge is formed between a bolt hole, nearest to the second connecting plate, of the first connecting plate and the second connecting plate; and the lower flange connecting piece is simultaneously connected with a lower flange of the steel beam and the flange of the steel column, and the middle of the lower flange connecting piece is a weakened area. According to the unilateral buckling restraint-type steel-beam-column connecting joint and the steel structure building, the anti-seismic property is excellent, and the damage of the connecting joint can be controlled; and the steel beam and the steel column are not damaged after an earthquake, the connecting pieces can be rapidly replaced and repaired on the premise that an original structure (such as a floor slab) is not damaged.
Description
technical field [0001] The invention relates to the field of building steel structures, in particular to a unilateral buckling-constrained steel beam-column connection node and a steel structure building. Background technique [0002] Steel frame structures are widely used in modern buildings. Compared with traditional concrete structures, they have the advantages of light weight, high strength, good machinability, high degree of industrialization, and good seismic performance. The steel beam-to-column joint is a key part of the steel structure. The traditional steel beam-to-column joint connection mostly adopts the bolt-welding mixed connection method. The shear plate welded on the steel column and the web plate of the steel beam are connected by friction-type high-strength bolts, and the steel beam flange and the steel column flange are connected by full Penetration welds are welded together. Although this joint is widely used, it has the following disadvantages: there a...
Claims
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IPC IPC(8): E04B1/58E04B1/24
CPCE04B1/2403E04B2001/2418
Inventor 曲冰李永超侯和涛罗建良侯全胜
Owner SHANDONG UNIV