A stud shear key that can effectively improve welding quality and ductile failure characteristics
A technology of welding quality and ductility failure, applied in the field of stud shear keys, can solve the problems of poor welding quality, easy brittle fracture of studs, and poor toughness, and achieve the effect of improving welding quality
Active Publication Date: 2016-06-08
SHENZHEN UNIV
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Problems solved by technology
When the welding process has damage to the base metal and the root of the stud, that is, the toughness of the metal becomes poor during the welding process, making the stud brittle, or the elongation of the electrode material is insufficient, and the fracture area of the stud overlaps with the defect area during the shearing process. ,like figure 1 As shown, the stud 200 is welded to the base metal 100, and the fracture zone 101 coincides with the weld zone 102, causing the fracture property to be affected by the embrittlement of the welding process, resulting in defects in the root region of the stud being reflected during the fracture process. poor quality
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[0031] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0032] Figure 2 to Figure 7 The reference numerals in the figure are: base metal 100; fracture area 101; welding area 102; stud 1; nail cap 11; disk groove 111; nail body 12; chassis 13; groove 131; Outer jacket ceramic ring 2; sleeve part 21; stepped part 22; flared part 23; notch 24.
[0033] Such as Figure 2 to Figure 7 As shown, a stud shear key that effectively improves welding quality and has ductile failure characteristics includes a stud 1, and the stud 1 includes a nail cap 11 and a nail body 12 connected to the nail cap 11. The nail The cap 11 is provided with a disc groove 111, and the root of the nail body 12 is connected with a chassis 13 welded with the base metal 100, the chassis 13 is disc-shaped, and the diameter of the chassis 13 is larger than that of the nail body 12 diameter of.
[0034] Such as Figure 2 to Figure 7...
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Abstract
The invention relates to a stud shear key, in particular to a stud shear key capable of effectively improving the welding quality and the ductile failure characteristic. The stud shear key comprises a stud, wherein the stud comprises a stud cap and a stud body which is connected with the stud cap; a chassis which is welded with a parent material is connected to the root of the stud body; the diameter of the chassis is larger than that of the stud body. The stud shear key capable of effective improving the welding quality and the ductile failure characteristic has the beneficial effects that the region of fracture is transferred between the stud body and the chassis and is separated from the welding region, the fracture property of the stud is prevented from being influenced by a welding work procedure, and the welding quality is favorably improved.
Description
technical field [0001] The invention relates to a stud shear key, in particular to a stud shear key which effectively improves welding quality and has ductile failure characteristics. Background technique [0002] Some beams, columns, and slabs in the steel structure need to be spliced with the concrete section, and a large number of welding studs are used as the connection key between the steel section and the concrete section, so that the steel-concrete section can be spliced and work together. Due to the large span of the bridge, the section needs to have a large bending stiffness. The steel-concrete composite structure is widely used due to the reasonable force sharing and stiffness distribution. A large number of studs are welded in the steel-concrete composite interface, and the large-volume concrete section and The steel sections are spliced together. In addition, many composite bridges are formed by overlapping steel structure bridges and concrete rigid frame ...
Claims
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IPC IPC(8): B23K9/20F16B5/08F16B37/06
Inventor 隋莉莉邱桐邢锋周英武韩宁旭
Owner SHENZHEN UNIV