1. Divide the long wall into wall segments. For seismic wall structures and some frame-supported seismic wall structures, if the inner longitudinal wall is long, and the span-height ratio of the coupling beam is small and the stiffness is high, the integrity of the wall is good. Under the horizontal earthquake, the shear deformation of the wall is large, and the failure height of the wall limb may exceed the height of the bottom reinforcement. 200 1 code stipulates that long walls should be divided into wall segments, so that the height-width ratio of the walls is greater than 2. Wall section. 89 specification also has the same provision, the difference is: coupling beam. Code 89 is weak coupling beam 200 1 code is coupling beam with span-height ratio not less than 6. Its purpose is to set up coupling beams with small stiffness and bearing capacity, which may be destroyed and yield first under earthquake action. Make the wall section become a lateral force resisting unit, and the wall section is mainly bent and deformed.
2. Avoid sudden changes in wall length. There should be no sudden change in the section length of the wall limb along the height of the seismic wall and some frame-supported seismic wall structures. When the hole of the seismic wall is relatively large, and the reinforcement area at the bottom of the first and second types of seismic walls is relatively large, it is not suitable to have shear walls with staggered holes.
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