桩式抛石丁坝技术在滦河西庄险段的应用

Application of Pile Bridge Riprap Groin Technology to the Dangerous Xizhuang Dike Section of Luan River

桩式抛石丁坝是一种导流护岸工程措施,由预制混凝土桩,铅丝笼块石及柴排构成,它具有基础深,抗冲能力强,结构稳定,施工方便,节省投资等优点,弥补了传统铅丝笼抛石坝易折断毁的缺陷。在规划布置时,宜布置成下挑式,顺水导流;施工时采用射水沉桩的方式固定混凝土桩,人工在混凝土桩间填置铅丝笼块石。此技术经在滦河左岸昌黎县西庄险段初步试用,取得成功,值得进一步研究推广。

The pile bridge riprap groin is engineering measures for diversion protection, consisting of precast concrete piles, lead wire cage rubble and firewood raft with deep foundation, strong capability of resisting impact, stability of structure, convenient construction, investment saving and so on, making up the easily breaking defects of the traditional ones. Concerning the planning, it was arranged to 120° groyne and the direction of flow diversion, in the construction, water jetting pile sinking was used in the experiment fixed concrete pile, and lead wire cage rubble was filled. The technology had applied in the dangerous Xizhuang dike section of the Luan River, it achieves success and worth of studying and extending further.