I still remember some time ago it was said on the Internet that my grandparents got married for half a bucket of rice, and my parents got married for half a pig. My marriage cost my parents half their lives. I finally bought a house, but I was worried about the quality of the house and whether the steel beams and concrete columns were not firmly connected and other issues. The editor below will teach you step by step about the connection between steel beams and concrete columns, giving you peace of mind, peace of mind, and peace of mind.
How to design the connection nodes between concrete columns and steel beams?
With this understanding, you can understand the overall situation of the steel beams and concrete square columns of the entire house before buying a house, which is beneficial to Better prepared for some natural disasters such as earthquakes, mom no longer has to worry about the overall performance of the house.
Rigid connection:
1. Overall cast-in-situ, the beams are cast together through the columns, and stirrups and studs are required at the nodes to ensure tight integration.
2. The column is embedded with node components, and the beam is installed with it. The flange and web are attached to stiffening plates and connected with high-strength bolts and surrounded by welding. This method is reasonable in construction and relatively common.
Hinged:
Concrete corbels are made on the column. Or pre-embed steel corbels, put the steel beams on top, and fix them with the embedded parts to avoid sliding. The design and construction are simple and the forces are clear, but this does not form a framework.
How to deal with the connection nodes of steel concrete columns and beams?
The mechanical properties and seismic performance of shaped steel concrete components are greatly improved compared to reinforced concrete structural components. For high-rise buildings with high deformation capacity requirements, many short columns or uneven plane and vertical stiffness The structural form is particularly suitable. The processing of beam-column connection nodes is also a difficult point in construction in actual production work.
The above four node processing methods are commonly used nodes for connecting medium-sized steel concrete columns and beams in this project. Based on various specific conditions on site, corresponding node processing measures need to be taken. For complex steel-concrete beam-column joints, by adopting reasonable connection processing methods, the difficulty of tying steel bars can be reduced, and the space for concrete pouring between beam-column nodes can also be increased, which can better form dense concrete and improve concrete quality. Pour quality.
How to increase the seismic resistance of the connection nodes between concrete columns and steel beams?
The most painful lesson from the 1994 Northridge earthquake in the United States and the 1995 Kobe earthquake in Japan is the premature brittle failure of welded rigid joints in modern steel structures. The damage investigation of the two earthquakes found that the connection damage of the welded nodes of the steel structure mainly occurred at the lower flange. The main reasons for the damage were analyzed: on the one hand, it may be that the combined effect of the concrete floor slab caused the stress at the lower flange to increase; on the other hand, the stress at the lower flange increased; On the one hand, it may be that the interruption of welding of the lower flange at the web position causes weld defects. Therefore, there is an urgent need to explore effective measures (such as using factory welding methods and "dog-bone" weakening of steel beams) to ensure the weld quality of joints. At the same time, it is necessary to conduct in-depth research on the impact of the combination effect of concrete floor slabs.
With this understanding, you can learn about the overall condition of the steel beams and concrete square columns of the entire house before buying a house, which will help you better cope with some natural disasters such as earthquakes. Mom no longer has to worry about the overall condition of the house. performance.
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