Foundation:
一, unstable resonant. 1, the inspection method, the conditions, characteristics: A, although the amplitude than bearing shafting vibration amplitude of the small, but there is A big shock to spread foundation, to the column, beam near it sharply reduced; B, basic vibration frequency and the vibration of the pump speed is consistent; C, adjacent pump equipment operation to a halt when the vibration of the pump is very big. 2, the measures: A, reinforce the foundation; B, improve the balance of a pump.
二, the foundation is not solid cause resonance. 1, the inspection method, the conditions, characteristics: A, although the amplitude than bearing shafting vibration amplitude of the small, but there is A big shock to spread foundation; B, the foundation of vibration frequency is consistent with the pump rotation speed; C, the foundation is not solid. 2, the measures: A, reinforce the foundation; B, to the inside foundation into cement mortar; C, improve the balance of a pump.
三, anchor bolt looseness, or anchor bolt without effective work. 1, the inspection method, the conditions, characteristics: A, vibration is smaller than the vibration of the shaft system, etc, but also have considerable transmission of vibration to the ground; B, cracks on the basis of near the anchor bolt. 2, the measures: A, reinforce the anchor bolt. B, reinforced concrete foundation; C, to increase the number of anchor bolt. |