振动冲击沉管灌注桩有显著的经济效益和社会效益,比预制桩可节约工程费30％～50％,可节约大量钢材、水泥和木材,得到迅速推广应用,近几年四川省内有20个单位购置设备,在30多个市县施工灌注桩工程400余个,进尺60万米,灌注混凝土400万立方米,为国家节约建设资金约1000万元。 在推广应用中,有些设计单位和建设单 Vibratory impact immersed cast-in-place piles have significant economic and social benefits. They can save 30% to 50% of engineering costs compared to prefabricated piles, and can save a large amount of steel, cement and wood, and are rapidly applied. In recent years, Sichuan Province has 20 A unit purchases equipment and constructs more than 400 cast-in-place piles in more than 30 cities and counties, measures 600,000 meters, and injects 4 million cubic meters of concrete to save construction funds of about 10 million yuan. In the promotion and application, some design units and construction orders