A kind of structural beam-beam artificial plastic hinge joint and its construction method

Abstract

The invention discloses an assembled structural beam-beam artificial plastic hinge connection node and a construction method thereof, comprising prefabricated reinforced concrete beams, prefabricated reinforced concrete beam-column structures, pins, ear plates, end plates and anchor bars; beam-beams In the area above the beam where the connection node area of ​​the artificial plastic hinge of the beam is 1 / 5L to 1 / 4L and 3 / 4L to 4 / 5L from the center line of the column, the bending moment value in the area is less than 0.2 times of the mid-span bending moment value and the beam 0.15 times of the value of the end bending moment; the invention also discloses a construction method of an assembled structural beam-beam artificial plastic hinge joint. The present invention designs beam-beam artificial plastic hinge connection nodes away from beam-column nodes, improves the integrity of the assembled structure and the reliability of the nodes, and weakens the stiffness of the connection nodes so that the connection node area is generated before the yield of the beam-column nodes Plastic hinges achieve the seismic goals of "strong columns and weak beams" and "strong joints and weak members". The post-earthquake repair is more convenient and economical than cast-in-place structures; at the same time, the construction process is simplified and the construction quality is guaranteed. It is practical and easy to promote and use .

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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