Journal of Hebei University of Water Resources and Electric Engineering

Journal of Hebei University of Water Resources and Electric Engineering ›› 2020, Vol. 30 ›› Issue (1): 19-23.DOI: 10.16046/j.cnki.issn2096-5680.2020.01.004

• Technology Theory and Application • Previous Articles     Next Articles

Experimental Study on Piles with Ram-compacted Bearing Sphere for Large Bearing Capacity Based on Saturated Soft Soil Foundation

ZHANG Pei-cheng1，4，SUN Yu-wen1，4，ZHANG Dian-shu2，WANG Ji-zhong3，4   

  1. 1.Hebei University of Water Resources and Electric Engineering，061001，Cangzhou，Hebei，China;
    2.Cangzhou Construction Engineering Quality Inspection Center，061001，Cangzhou，Hebei，China;
    3.Beijing Puissant Geotechnical Engineering Co.，Ltd.，102300，Beijing，China;
    4.Cangzhou Foundation Pile Engineering Technology Research Center，061001，Cangzhou，Hebei，China.

  • Received:2019-10-08 Revised:2019-11-20 Online:2020-03-31 Published:2020-04-30

基于饱和软土地基大承载力载体桩试验研究

张培成1，4，孙玉文1，4，张殿树2，王继忠3，4   

  1. 1.河北水利电力学院交通工程学院，河北省沧州市重庆路1号 061001;
    2.沧州市建设工程质量检测中心，河北省沧州市迎宾大道建业大厦 061001;
    3.北京波森特岩土工程有限公司，北京市昌平区天通苑北街道太平家园 102300;
    4.沧州市基桩工程技术研究中心，河北省沧州市重庆路1号 061001

  • 作者简介:张培成(1970-)，男，河北沧县人，河北水利电力学院副教授，研究方向为岩土工程技术｡E-mail:763492368@qq.com
  • 基金资助:
    河北省教育厅科技青年基金项目(QN2018098);; 河北省科技厅科技计划项目(16275430)

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Abstract: In view of the characteristics of the soft soil foundation in the coastal area，which is soft in the upper part and hard in the lower part，this paper improves the traditional carrier pile technology to realize the purpose of completing the construction of large bearing capacity pile in the saturated soft soil foundation，and to solve the difficulties of pile feeding and pile forming when sending the large diameter and long length of prestressed concrete pipe pile，square pile and bamboo pile to pass through the relatively dense silt or silty sand layer.The length and bearing capacity of the pile are quite different，which cannot meet the design requirements.Through the field test of a specific project，a comparative study is carried out to achieve the expected effect of controllable pile formation，shortened pile length and meeting the requirements of large bearing capacity，which can provide certain technical guidance.

Key words: saturated soft soil foundation, bearing capacity, piles with ram-compacted bearing sphere

摘要： 针对沿海地区饱和软土地基具有上部软弱下部坚硬的特点,文中对传统载体桩工艺进行改进,实现在饱和软土地基施工完成大承载力桩的目的,解决大直径大长度的预应力混凝土管桩、方桩、竹节桩在穿过相对密实的粉土或粉砂层时送桩成桩困难,桩长、承载力相差较大,不能满足设计要求的难题。通过具体工程的现场试验,进行了对比研究,达到成桩可控、缩短桩长、满足大承载力要求的预期效果,具有一定的技术指导意义。

关键词: 软土地基, 承载力, 载体桩

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