挤扩多分支承力盘混凝土灌注桩的工程应用

Engineering Application of Compacted Multi-branch Bearing Disk Concrete Bored Piles

挤扩多分支承力盘混凝土灌注桩是一种新型的变截面混凝土灌注桩，由主桩、分支桩、分支和承力盘组成。此类桩具有承截力高、节约材料、施工速度快、成本低、劳动强度低和抗震性能好等优点。本文介绍了此类桩的优点、使用范围、承截力的计算、构造要求、施工工艺和质量检测。

The compacted multi-branch bearing disk concrete bored pile is a new type of concrete pile with varied sections, which is composed of the main pile, branch pile, branch support and the bearing disk. It has such advantages as high bearing capacity, less material, shorter construction period, lower cost and labor, and better anti-seismic performance. This article describes the merits, application range, bearing capacity calculation, structural requirements, construction workmanship and quality inspection of this type of pile.