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重庆交通大学学报（自然科学版）

重庆交通大学学报（自然科学版） ›› 2017, Vol. 36 ›› Issue (9): 55-60.DOI: 10.3969/j.issn.1674-0696.2017.09.11

• 港口航道·水利水电·资源环境 • 上一篇    下一篇

塑料套管混凝土桩塑料套管分析及计算

许春虎1，齐昌广2，左殿军3,4   

  1. (1. 浙江省钱塘江管理局勘测设计院，浙江 杭州 310016；2. 宁波大学 建筑工程与环境学院，浙江 宁波 315211； 3.交通运输部天津水运工程科学研究所 岩土工程研究中心，天津 300456；4.河海大学 岩土工程科学研究所，江苏 南京 210098)
  • 收稿日期:2016-01-07 修回日期:2016-02-17 出版日期:2017-09-20 发布日期:2017-09-20
  • 作者简介:许春虎（1986—），男，江苏南京人，工程师，主要从事水工结构、堤防等水利工程设计工作。E-mail：xuchunhu307@sina.com。
  • 基金资助:
    浙江省自然科学基金青年基金项目（LQ15E080002）；国家自然科学基金项目（51508282）

Analysis and Calculation on Plastic Tube Outside of Plastic Tube Cast-in-Place Concrete Pile

XU Chunhu1, QI Changguang2, ZUO Dianjun3, 4   

  1. (1. Reconnaissance and Design Institute, Qiantang River Administration of Zhejiang, Hangzhou 310016, Zhejiang, P.R.China; 2. Faculty of Architecture, Civil Engineering and Environment, Ningbo University, Ningbo 315211, Zhejiang, P.R.China; 3. Geotechnical Engineering Research Center, Tianjin Research Institute for Water Transport Engineering of MOT, Tianjin 300456, P.R.China; 4. Geotechnical Research Institute, Hohai University, Nanjing 210098, Jiangsu, P.R.China)
  • Received:2016-01-07 Revised:2016-02-17 Online:2017-09-20 Published:2017-09-20

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摘要： 塑料 套管混凝土桩（简称TC桩）是由预先打设在地基中的塑料套管内浇注混凝土组成的，在TC桩施工和工作期间，塑料套管将承受超静孔隙水压力、挤土压力 和振动等作用，因此，利用有限元分析，结合塑料套管的基本参数和实际应用情况，对塑料套管的受力特性拟定了5种计算方案，并对塑料套管外侧的波 纹形状的选择进行了探讨。分析结果表明：塑料套管的最大应力发生在沉管上拔初期；在同一壁厚情况下，塑料套管的波高/波距=0.38时最优；建议不宜 采用圆形波纹或大波角的塑料套管，而梯形或弧形的塑料套管较合理。

关键词: 岩土工程, 塑料套管混凝土桩, 有限元分析, 环刚度

Abstract: Plastic tube cast-in-place concrete pile (TC pile) is composed of pre-driven plastic tube filled with concrete. During the period of construction and work of TC piles, the plastic tubes were going to be subjected to the excess pore water pressure, soil compaction pressure and vibration, et al. Therefore, combining with the basic parameters and practical application of the plastic tubes, five calculation schemes were figured out for the mechanical characteristics of plastic tubes by employing the finite element analysis, and the selection of outer corrugated shapes of plastic tubes were also discussed. The analysis results show that the maximum stress of plastic tubes occurs in the early stage of plastic tube extraction; in the case of the same wall thickness, it is optimal for plastic tubes as the wave height divided by wave distance is 0.38; it is suggested that the plastic tubes with circular ripple or big wave angle should not be adopted, whereas the trapezoidal or curved plastic tubes are more feasible.

Key words: geotechnical engineering, plastic tube cast-in-place concrete pile, finite element analysis, ring stiffness

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