土工基础

›› 2015, Vol. 29 ›› Issue (6): 5-8.

• 工程实录 • 上一篇    下一篇

PHC桩在粘土地区基坑工程中的技术及经济性探

李建明1，刘 琦1，孙永梅2，王 琢1，魏宏星1   

  1. （1.辽宁省建筑设计研究院岩土工程公司，沈阳 110005；2.辽宁省建设科学研究院，沈阳 110005）
  • 收稿日期:2014-12-02 出版日期:2015-12-22 发布日期:2015-12-30
  • 作者简介:李建明（1969-），男，高级工程师，研究方向为岩土工程勘察、设计及施工。

Technical and Cost Analysis of the PHC Piles as Deep Excavation Support in Cohesive Soils

LI Jianming1, LIU Qi1, SUN Yongmei2, WANG Zuo1， WEI Hongxing1   

  1. （1.Geotechnical Engineering Co., Liaoning Province Building Design Research Institute,
     Shenyang 110005；2.Liaoning Building Design Science Research Institute, Shenyang 110005）
  • Received:2014-12-02 Online:2015-12-22 Published:2015-12-30

摘要： 粘土地区的直立开挖基坑一般采用悬臂桩支护或桩锚支护形式。但是支护桩若采用悬臂桩，变形一般较大；若采用灌注桩+锚索，可能会造成资源浪费，并且工期较长；若采用钢管桩+锚索，则锚索工程量将会增加。提出在粘土地区采用PHC桩+锚索支护，在技术上具有可行性，在经济及工期上也具有很大优势。

关键词: PHC桩, 桩锚, 基坑, 粘土, 技术经济

Abstract: The conventional supporting system in the vertical excavations in cohesive soil layers is the soldier pile with or without ground anchors. When the cantilever soldier piles are used, larger deformation at the supporting system is expected; If the castinplace soldier pile with ground anchor are used, a long construction period with large investment are anticipated; If the steel pipe piles are used, a large quantities of ground anchor are necessary. This paper present the Prefabricated High Strength Concrete Pipe Pile (PHC) with the ground anchor system for the deep excavation support in the cohesive soil layers. It is technically feasible and has the cost effective advantage. 

Key words: PHC Piles, Anchored Piles, Deep Excavations, Cohesive Soils, Technology and Economy