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[提要]  采用直徑為550mm的預(yù)應(yīng)力混凝土管樁的九個(gè)試件，對(duì)樁與樁帽連接節(jié)點(diǎn)的軸拔承載力進(jìn)行了試驗(yàn)研究，討論了樁與樁帽的連接型式、連接節(jié)點(diǎn)的破壞狀態(tài)、破壞機(jī)理以及受力特性。在試驗(yàn)研究的基礎(chǔ)上給出了連接節(jié)點(diǎn)軸拔承載力的建議公式和確定管樁埋入樁帽深度的計(jì)算方法，并建議了在實(shí)際工程中應(yīng)采用的連接型式。
[關(guān)鍵詞]  管樁 樁帽 軸拔 連接

Using prestressed concrete pipepile with 550mm diameter, the axially pulled capacity of plie-pilecap connections is studied by testing nine members. Pile-pilecap connection types, the failure form of connections, failure mechanism and tension character are discussed. Some formulae for calculating the axially pulled capacity of connection and determining the embedded length of pilebody in pilecap are proposed based on the tests, at the end a reasonable connection type is proposed for engineering.
Keywords: pipepile; pile -pilecap; axially pulled; connection