Fabricated structural beam-beam artificial plastic hinge connection joint and construction method thereof

Abstract

The invention discloses a fabricated structural beam-beam artificial plastic hinge connection joint and a construction method thereof. The fabricated structural beam-beam artificial plastic hinge connection joint comprises a prefabricated reinforced concrete beam, a prefabricated reinforced concrete beam column sub-structure, pin shafts, lug plates, end plates and anchor bars; and in a beam area,1 / 5L-1 / 4L and 3 / 4L-4 / 5L from column central line, of the beam-beam artificial plastic hinge connection joint, a bending moment value in the beam area is correspondingly less than 0.2 time of a mid-span bending moment value and 0.15 time of a beam end bending moment value. The invention further discloses a construction method of the fabricated structural beam-beam artificial plastic hinge connection joint. The beam-beam artificial plastic hinge connection joint is designed far away from a beam-column joint, thus the integrity of the fabricated structure and the reliability of the joint are improved, by weakening the rigidity of the connection joint, a connection joint area yields before the beam-column joint to generate plastic hinge, thus seismic objectives of 'strong column and weak beam'and 'strong joint and weak part' are realized, and post-earthquake repair is more convenient and economical than cast-in-situ structure; and meanwhile, the construction process is simplified, the construction quality is guaranteed, the practicability is high, and the popularization and use are facilitated.

Description

technical field [0001] The invention belongs to the technical field of construction engineering, and in particular relates to a matching structural beam-beam artificial plastic hinge joint and a construction method thereof. Background technique [0002] my country is one of the countries with frequent earthquakes and severe earthquake damage in the world, and most parts of our country are in high-intensity areas. The seismic codes of various countries emphasize the basic design requirements of strong columns and weak beams, strong nodes and weak members. However, due to design, transportation and construction reasons, the connection nodes are usually set in the beam-column joint area, which makes the joint area subjected to complex forces, and it is difficult to meet the requirements of bearing capacity, crack resistance, and easy construction. In earthquakes, a large number of prefabricated structures have strong beams. The actual damage of weak columns and weak joints of ...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a prefabricated structure in view of the poor reliability of the joints of the existing prefabricated structure, the poor integrity of the structure, and the difficulty in realizing the anti-seismic goal of "strong columns and weak beams, strong nodes and weak components". Beam-beam artificial plastic hinge joints and their construction methods, the beam-beam joints are set as beam-beam artificial plastic hinge joints and away from the core area of ​​beam-column joints, so as to improve the joint reliability and structural stability of the assembled structure. Integrity and the realization of the seismic goal of "strong columns and weak beams, strong joints and weak components", the on-site construction is convenient, and post-earthquake repairs are more convenient and economical than cast-in-place structures, which is more conducive to the industrialization of prefabricated buildings

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