Top beam function:
1, to prevent the foundation pit edge collapse;
2, through the reinforced concrete support to bear the horizontal extrusion force and vertical shear force of steel support, crown beam construction must chisel away the pile top laitance, etc.
Ring beam: also called ring beam, it is used to strengthen the building envelope.
Ring beam action:
1, which can improve the seismic capacity of building structures as a whole.
2. Surround the steel pipe column with multiple steel bars, bind them with the steel bars of reinforced concrete straight beams, and finally pour concrete as a whole, which greatly strengthens the beam-column connection.
Extended data
Precautions for crown beam: The protective layer thickness of concrete and crown beam shall be determined according to thermal calculation. In order to prevent water loss, the concrete surface should be covered with plastic film, and the rock wool quilt should not be wet.
Notice of ring beam: The foundation structure of the circumscribed circular ring beam is completely enclosed by the ring beam, and it is not necessary to dismantle the ring beam, so the construction period is relatively short.
reference data
Baidu Encyclopedia-Guan Liang
Baidu Encyclopedia-Liang Huan