Design method of semi-rigid connection joint of low multi-layer fabricated concrete beam column

Abstract

The invention discloses a design method of a semi-rigid connection joint of a low multi-layer fabricated concrete beam column. The design method comprises the following steps: 1) establishing a beam column semi-rigid joint model on the basis of semi-rigid connection structure analysis; 2) analyzing the failure form of the beam-column semi-rigid joint model, and determining the flexural capacity ofjoint connection; 3) determining the flexural capacity of the beam end concrete section; and 4) determining the flexural capacity of the beam column semi-rigid node. The beam column semi-rigid jointbuilt through the design method is simple in structure, secondary concrete pouring or grouting is not needed, and rapid installation is facilitated. According to the invention, through reasonable design, the damage mode is controllable, and the safety of the connection node is ensured. Different from a traditional cast-in-place frame joint which generates plastic hinge energy consumption through abeam end, the semi-rigid joint adopted by the invention generates energy consumption through a relative corner generated by a beam column, the section of the beam end or a joint connecting piece is mainly damaged, the integrity of the column is kept, and the beam component can be replaced.

Description

technical field [0001] The invention relates to the technical field of prefabricated buildings, in particular to a design method of a beam-column connection structure. Background technique [0002] Concrete structures are widely used in my country, and can be divided into cast-in-place concrete structures and prefabricated concrete structures according to the construction methods of buildings. The prefabricated concrete structure is a structure formed by transporting the prefabricated components of the factory to the construction site and splicing them through on-site assembly. It is characterized by short construction period, high product quality, low energy consumption, low environmental pollution, low labor cost, etc. It is an inevitable choice for sustainable development of the construction industry. [0003] In residential engineering, low-rise residential buildings are a more suitable form of housing. Compared with high-rise residential buildings, they have many advan...

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Problems solved by technology

[0004] In view of this, the present invention provides a design method for semi-rigid joints of low-level prefabricated concrete beams and columns, so as to ensure the reliability of the joint structure of beams and columns of prefabricated concrete buildings, and solve the complex joint structure of existing prefabricated concrete buildings. , On-site node installation cumbersome technical issues

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