(中国航空规划建设发展有限公司，北京 100120)
［摘要］复合载体桩桩身常用混凝土灌注桩，在深厚软土地区其桩身质量不易保证；采用PHC预应力管桩作复合载体桩桩身，既可提高其桩身承载力，又易于保证桩身质量。通过天津空港某工程基础设计，对预应力管桩与混凝土灌注桩为桩身的复合载体桩及以PHC管桩为桩身的复合载体桩进行对比，采用预应力管桩为桩身的复合载体桩单桩承载力高、施工质量易于保证。
［关键词］复合载体桩；方案比较；桩身；承载力；检测
Application of the ram-compaction pile with PHC pre-stressed tube as body
Deng Yan, Tang Xiaojun(China Aviation Planning and Construction Development Co., Ltd., Beijing 100120, China)
Abstract:Normally, the ram-compaction pile body is bored concrete pile, whose quality can′t be guaranteed in deep and thick soft ground. The adoption of PHC pre-stressed tube as the ramcompaction pile body can not only improve pile body strength, but also guarantee body quality. Through the foundation design of a project in Tianjin Konggang, prestressed tube pile and concrete bored concrete pile as the ram-compaction pile are compared with PHC pre-stressed tube pile as the pile body of ram-compaction pile. It is provided that the bearing capacity of the ram-compaction pile with PHC pre-stressed tube as body is bigger than others, and the quality of construction is easy to control.
Keywords: ram-compaction pile; scheme comparing; pile body; bearing capacity; test   
作者简介：邓燕，高级工程师，Email: dengyan-yang@263.net。
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