A column base node with two fortification shear keys and its construction method
A column foot joint and shear key technology, which is applied to column foot joints with secondary fortification shear keys and their construction fields, can solve the cumulative damage of column foot joints, unable to resist continuous earthquake or explosion impact, brittle fracture, etc. question
Active Publication Date: 2017-12-01
ZHEJIANG JINGGONG STEEL BUILDING GRP
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Problems solved by technology
Moreover, steel structure buildings may also encounter rare earthquakes that are higher than the fortification intensity of the area during their service. The earthquake action is multiple reciprocating impacts on the structure, which will cause cumulative damage to the column foot nodes;
[0004] Due to the characteristics of stress concentration and uneven material properties of welded joints used in conventional steel structure column foot joints, brittle fracture may be induced under the reciprocating impact of the above-mentioned extreme catastrophe
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[0017] like Figure 1-3 As shown, what the present invention discloses is a column foot node with two fortification shear keys, including a foundation A7, and a built-in part A6 is arranged in the foundation, and a finished support A5 is installed on the built-in part A6, and the finished support A steel column A1 is installed on A5; anti-collision corbel A3 and two fortification shear keys A2 are distributed in the steel column, wherein the second fortification shear key A2 is located in the anti-collision corbel A3 with a certain gap The two fortification shear keys A2 and the anti-collision corbels A3 are mutually matched and connected in a cross distribution; or, the two fortification shear keys A2 are distributed in a well, and the anti-collision corbels A3 are arranged along the circumference Divergent distribution.
[0018] The finished support A5 includes an upper support A51 and a lower support A52 that are engaged with each other, and an intermediate spacer A53 that...
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The invention belongs to the field of building structures and particularly relates to a column base joint with double defense shear-resistant keys and a construction method thereof. A steel structure column base joint consists of two shear-resistant split systems; a second defense shear-resistant key is free of load in the normal using stage; when the column base joint suffers from extreme disasters and a first defense shear-resistant system is damaged, the second defense shear-resistant key takes effect instantly, so that the continuous damage to the column base joint is avoided. Through the technical scheme, the safety redundancy degree of the steel structure column joint is improved; a certain energy-dissipation effect is also achieved; meanwhile, the second defense shear-resistant key is simple to process and manufacture and convenient to mount.
Description
technical field [0001] The invention belongs to the field of building structures, and in particular relates to a column base node with two fortification shear keys and a construction method thereof. Background technique [0002] Compared with traditional buildings, steel structure buildings have the advantages of high material strength, good seismic performance, green environmental protection, and convenient industrial production. They have been widely used in industrial and civil buildings. In steel structure buildings, as the connecting part of the upper structure and the lower foundation, the column foot joint plays a role of linking the preceding and the following, which is particularly important for the safety of the structure. If the column base node is damaged, it will cause inestimable loss. Therefore, it is not only necessary to ensure sufficient safety of the steel structure column foot joints in the design stage, but also to provide special protection for the col...
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IPC IPC(8): E04B1/24
CPCE04B1/2403E04B2001/2463
Inventor 郦宏伟杜兆宇陈杰俞奇效吴国松刘云飞丁毅孙立群张笑乐
Owner ZHEJIANG JINGGONG STEEL BUILDING GRP