Function-recoverable buckling restrained assembled beam-column composite node of modularized design
A technology of modular design and function restoration, applied in the direction of protective buildings/shelters, building components, building types, etc., can solve the problems of long construction time, numerous assembly procedures, damage to main beams and columns, etc., to improve the construction Accuracy and quality, the effect of stimulating carrying potential and protecting life safety
Active Publication Date: 2019-04-19
BEIJING UNIV OF TECH
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Problems solved by technology
[0003] At present, when the common steel structure beam-column joints are damaged by earthquakes, the plastic hinge is relatively close to the column surface, which is likely to cause shear buckling of the column web in the joint domain, local buckling of the column flange, and yielding of the beam end, resulting in varying degrees of damage to the main beam-column , cannot be replaced and repaired after the earthquake, nor can it be quickly assembled. The construction takes a long time and is not suitable for prefabricated buildings.
At the same time, the existing joints during bolt welding can only achieve the purpose of moving the plastic hinge at the beam end by adding cover plates, stiffeners or side plates and other beam end strengthening measures. Stability factors will make it difficult to guarantee the quality of welding
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[0023] Attached below Figure 1-7 , detailing the implementation of this patent.
[0024] like Figure 1-7 As shown, a modular design of recoverable function buckling-constrained fabricated beam-column composite joint includes the following components:
[0025] 1——Circular steel column with flange;
[0026] 2——Trough beam;
[0027] 3——cantilever beam assembly (which is composed of two mutually perpendicular channel steel cantilever beams, 1 / 4 short round steel pipe columns and upper and lower 1 / 4 flanges);
[0028] 4——groove web connector;
[0029] 5——flange connecting plate;
[0030] 6 - backing plate;
[0031] 7 - stud;
[0032] 8 - floor.
[0033] like Figure 1-7 As shown, a modularly designed buckling-constrained assembled beam-column composite node with recoverable function includes two circular steel pipe columns (1) with flanges and four modular composite floor slabs; the modular composite The floor slab consists of 2 channel beams (2), 1 cantilever beam asse...
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The invention relates to a function-recoverable buckling restrained assembled beam-column composite node of a modularized design, which belongs to the field of structural engineering. The node consists of a round steel pipe column with a flange, a conventional grooved beam, a cantilever beam assembly, a grooved web connector, a flange connecting cover plate, a backing plate, high-strength bolts, studs and a floor slab. On the premise of ensuring the modularized construction of an assembled steel structure, the buckling restrained concept is applied to the field of beam-column nodes, by embedding the flange connecting cover plate and arranging the grooved web connector, a supporting force is provided for the flange connecting cover plate after the compressive deformation to effectively control a buckling amplitude of the flange cover plate, so that the early instability of steel members can be avoided, and the stability of the steel members can be improved. In addition, the plastic hinge is transferred to the flange connecting cover plate by virtue of the measures of unequal thickness of the cantilever beam assembly and the flange of conventional beam, connection of the flange single cover plate, the dog-bone weakening and the like, and the functional recovery of the structure can be realized only by replacing a connector after an earthquake.
Description
technical field [0001] This patent relates to a modular design recoverable function buckling constraint assembled beam-column composite node device, which belongs to the technical field of structural engineering. Background technique [0002] Industrialized prefabricated steel structure is an inevitable trend in the development of high-rise steel structure residential buildings in the future, and it is the only way for my country to realize the industrialization of construction. In September 2016, the State Council issued a document to vigorously develop prefabricated buildings, and the proportion of prefabricated buildings will reach 30% in about 10 years. Prefabricated buildings are a major change in construction methods and an important measure to promote structural reforms and new urbanization development. They are fully in line with the connotation of "applicability, efficiency, coordination and development" of green buildings. Building assembly can standardize each co...
Claims
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IPC IPC(8): E04B1/24E04B1/58E04H9/02E04B1/98
CPCE04B1/24E04B1/2403E04B2001/2406E04B2001/2466E04H9/021E04H9/024
Inventor 姜子钦杨晓峰牛子尧康轶涛申存杰
Owner BEIJING UNIV OF TECH