沉管灌注桩(打入式)采用锤击沉管开孔或振动、振动冲击沉管开孔。施工时将带有预制桩尖或活瓣管尖的钢管沉入土中,然后在钢管内放入钢筋笼(也有省去的)并浇灌混凝土,其施工程序为:打桩机就位、沉管、浇灌混凝土、边拔管边振动、安放钢筋笼、继续灌混凝土、成型等。桩管外径常用340毫米及480毫米两种。桩成型径一般在300～500毫米之间,长度一般不超过25米。 Immersed pipe pouring pile (driven) Hammer pipe immersed or vibration, shock tube immersed hole. During construction, the steel pipe with pre-fabricated pile tip or valve tip is sunk into the soil, and then a steel cage (also omitted) is placed in the steel pipe and concrete is poured. The construction procedure is as follows: Piling machine in place, , Pouring concrete, pulling aside the side of vibration, placing steel cage, continue to pour concrete, forming and so on. Pile diameter commonly used 340 mm and 480 mm two. Pile forming diameter is generally between 300 to 500 mm, the length is generally not more than 25 meters.