岛式水文(位)站往往采用高桩式水工建筑物,为避免船舶横向外力的破坏,需在水文(位)站前沿两侧设置保护桩。目前,上海地区大都采用钢筋砼保护桩,它具有承载力适中、防腐蚀、耐久和经济等优点,但不足之处是弹性和抗冲击能力较差,容易被撞裂、剥落,甚至撞断,使用寿命缩短,一般只有20～30年。因此,在迁建米市渡水文站工程时,我们首次采用了墩台式钢管保护桩,经使用表明,效果 Island hydrological (stations) are often used high-pile hydraulic structures, in order to avoid damage to the ship’s lateral external forces, the hydrological (bit) station on both sides of the front to set the protection of the pile. At present, most reinforced concrete piles are used in Shanghai, which has the advantages of moderate bearing capacity, corrosion resistance, durability and economy. However, the shortcomings are that the elasticity and impact resistance are poor, and the steel is easily cracked, peeled off or even broken, Shorten the service life, generally only 20 to 30 years. Therefore, when we migrated the Mishidu ferry station project, we first adopted pier-type steel tube protection piles. After use, it shows that the effect