Equipment all manholes are arranged in the same orientation to determine the installation orientation of the column should be based on the orientation of the manhole, and to consider two factors: one is the installation of the column orientation corresponding to the radial lifting point of the equipment is straight to the ground, that is, in the process of lifting, whether there is no obstacle in the middle of the lifting material can be lifted directly from the ground (internal parts or filler); and then we must understand this equipment Whether there are other equipment around or with other upright equipment designed as a joint platform. When a single tower platform can be lifted on both sides of the manhole, the column can be installed on either side of the manhole. For the joint platform, the column relative to the manhole installation orientation is no more than three cases, in the top view of the equipment for the clockwise side of the installation, counterclockwise side of the installation or the center of the installation.
Square column:
Below 17 is in the X side of each side to be configured 1700mm * mm rebar
Right 17 is in the Y side of each side to be configured 1700mm * mm rebar
That 3.8 is the area of a single corner bar should not be less than 380mm * mm
G0.3-0.0 is the The area of the hoop reinforcement The area of the hoop reinforcement in the encrypted area is not less than 0.3, and the area of the hoop reinforcement in the non-encrypted area is not less than 0.0.
Cylindrical columns:
The value of the total cross-sectional area of the configured reinforcement is 800mm*mm. the perimeter of the uniform arrangement of the root is not limited
The structure of the columns is to bear the loads transmitted from the beams and slabs in the structure, and to transmit the loads to the foundation, it is the main vertical force members. Need to calculate the reinforcement. The role of structural columns is mainly to ensure the stability of the wall. Multi-story masonry houses should be fortified according to the dual criteria of cracking and collapse resistance, and the installation of reinforced concrete structural columns is one of the important seismic structural measures. Structural columns are generally set according to the code or standard atlas.