Low-damage self-resetting fabricated concrete two-way frame beam-column joint
A technology of beam-column joints and frame beams, which is applied in the direction of architecture and building construction, can solve problems such as complex construction on site, difficult control of construction quality, and inability to achieve lightening, so as to improve seismic performance, improve repairability, and be easy to replace Effect
Active Publication Date: 2017-10-10
BEIJING ACAD OF BUILDING ENG
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[0005]
The present invention designs a prefabricated concrete two-way frame beam-column connection node with the characteristics of low damage and self-resetting after the earthquake. The technical problem it solves is that the current assembled integral frame bea
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[0025] Combine below Figure 1 to Figure 4 , the present invention is further described:
[0026] Such as figure 1 , 2 As shown, the connection node includes a prefabricated concrete frame column (1) and a two-way prefabricated concrete frame beam (2). The concrete frame column (1) can be prefabricated in multiple layers or single layer. The joints of the frame column (1) along the height are arranged in the storey, and pass through continuously at the beam-column node area. The concrete frame beam (2) in two directions They are all single-span prefabricated, the prefabricated frame beam (2) is interrupted in the node area, and the beam end and the column side are used as the contact surface of the node connection. The pre-embedded steel plate (6) at the beam end can on the one hand protect the beam end during hoisting, and on the other hand can enhance the pressure bearing capacity of the beam end and reduce its damage under earthquake action. A gap of about 20 mm is rese...
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The invention relates to a prefabricated reinforced concrete two-way frame beam-column joint. The prefabricated reinforced concrete two-way frame beam-column joint is characterized in that a prefabricated frame column is uninterrupted in the joint area, a prefabricated frame beam is interrupted in the joint area, and a contact surface is formed by the beam end and the column side. Hole channels are reserved in the elevation positions of an upper reinforcing steel bar and a lower reinforcing steel bar of a corresponding beam in the frame column and penetrate into the reinforcing steel bars, the two ends of each reinforcing steel bar are fixed on a pre-buried steel part of the frame beam side, the seismic energy can be consumed under the earthquake effect, and replacement is easy to conduct after the earthquake. Hole channels are reserved in the position, close to the neutral axis, of the inner portion of the two-way frame beam and the corresponding position of the frame column, no-bonding prestressed tendons are arranged in the hole channels, and the prefabricated frame beam and the column are connected by applying prestress along the two-way frame beam. According to the prefabricated reinforced concrete two-way frame beam-column joint, the anti-seismic performance of the fabricated frame structure can be obviously improved. The structure system connected through the joint can achieve the purposes that zero damage or slight damage is achieved under a rare occurrence earthquake, and autonomous resetting is achieved after the earthquake. The joint is simple and convenient to construct and low in construction cost, and the novel prefabricated concrete frame joint connecting technology is worth being promoted vigorously.
Description
technical field [0001] The invention relates to a prefabricated assembled concrete structure node connection technology, in particular to an assembled concrete two-way frame beam-column connection node with the characteristics of low damage and self-resetting after an earthquake. Background technique [0002] Since the Wenchuan Earthquake in 2008, there have been frequent major earthquakes at home and abroad, and many buildings have collapsed or been severely damaged beyond repair. As a result, the victims have lived in tents or temporary buildings for a long time, which is very unfavorable for their recovery from psychological trauma. In the aftermath of previous major earthquakes, it has also been found that the psychological trauma of the survivors is not only due to the pain of losing their loved ones, but also to a large extent from the feeling of losing their homes and being homeless. Therefore, the research and development of new buildings with low damage and good rep...
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Login to view more IPC IPC(8): E04B1/21E04B1/22
CPCE04B1/21E04B1/22Y02A30/30
Inventor 刘航
Owner BEIJING ACAD OF BUILDING ENG
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