带扩大端预应力抗浮锚索在某地下工程中的应用

带扩大端预应力抗浮锚索类似于普通的抗浮锚杆,是一种竖向锚固技术,与其他抗浮技术相比,具有造价低、工期短、施工便捷等优点。由于施加了预应力,不仅可有效地防止地下室底板在地下水浮力作用下产生的上浮,且可在施工过程中检验每根锚索的施工质量,从而保证整个工程的质量。详细介绍了某工程中带扩大端预应力抗浮锚索的设计、施工经验及质量保证措施,为同类工程提供了经验。

APPLICATION OF PRESTRESSED FLOAT-RESISTING ANCHORAGE CABLE WITH ENLARGED BASE IN AN UNDERGROUND PROJECT

Prestressed float-resisting anchorage cable with enlarged base has more merits than other float-resisting methods,such as,cost of building is low,period of construction is short and building is convenient.For the existing of prestressing force,rising of basement floor caused by the float of underground water can be prevented.During the application of prestressing force,each cable can be checked to guarantee the construction quality.The experiences in prestsressed anchorage cable's design and construction and methods adoped to ensure quality have been introduced in detail.All these can be used for similar projects.