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1982～1984年,列宁格勒某单位继续对钢纤维混凝土桩进行了试验研究和工程实践。如事先预制出钢纤维混凝土桩头,然后再将桩头与普通钢筋混凝土桩身浇注在一起,形成局部纤维增强混凝土桩,其抗冲击能力比普通的钢筋混凝土桩高出1～4倍。近年,列宁格勒建工总局等单位又对钢纤维混凝土进行了一系列研究和推广。1982～1983年在42个工程项目中,采用了11650根钢纤维混凝土桩。其中有桩头和桩尖增强的局部钢纤维混凝土桩,也有全钢纤维混凝土桩,有棱柱形的,也有角锥形的。桩中钢纤维的配置量根据打桩过程中桩身内产
From 1982 to 1984, a unit of Leningrad continued to conduct experimental research and engineering practice on steel fiber reinforced concrete piles. If steel fiber reinforced concrete pile heads are prefabricated beforehand, then the pile heads are cast together with ordinary reinforced concrete piles to form local fiber-reinforced concrete piles, whose impact resistance is 1 to 4 times higher than ordinary reinforced concrete piles. In recent years, Leningrad’s General Administration of Construction and Industry and other units have conducted a series of research and promotion of steel fiber reinforced concrete. From 1982 to 1983, 11650 steel fiber reinforced concrete piles were used in 42 projects. There are steel fiber reinforced concrete piles reinforced by pile heads and pile tips, and all steel fiber reinforced concrete piles, both prismatic and pyramidal. The amount of steel fiber in the pile is determined according to the pile production during the pile driving process.