English

上海大学学报(自然科学版) ›› 2012, Vol. 18 ›› Issue (6): 645-650.doi: 10.3969/j.issn.1007-2861.2012.06.018

• 土木工程 • 上一篇    下一篇

预应力高强混凝土管桩桩身抗剪承载力试验

楼志军， 吴江斌， 宋青君， 孙德安   

  1. 1.上海大学 土木工程系，上海 200072；2.华东建筑设计研究院有限公司,上海 200002
  • 收稿日期:2012-02-20 出版日期:2012-12-28 发布日期:2012-12-28
  • 通讯作者: 孙德安（1962—），男，教授，博士生导师，博士，研究方向为岩土工程. E-mail:sundean@shu.edu.cn
  • 作者简介:孙德安（1962—），男，教授，博士生导师，博士，研究方向为岩土工程. E-mail:sundean@shu.edu.cn
  • 基金资助:

    上海市科委科研基金资助项目(09DZ1207601)

Test of Shear Capacity of Pre-stressed High-Strength Concrete Pipe Piles

LOU Zhi-jun, WU Jiang-bin, SONG Qing-jun, SUN De-an   

  1. 1. Department of Civil Engineering, Shanghai University, Shanghai 200072, China; 
    2. East China Architectural Design and Research Institute Co., Ltd., Shanghai 200002, China
  • Received:2012-02-20 Online:2012-12-28 Published:2012-12-28

PDF

887

被引次数

3

摘要： 在无轴压和轴压1 300 kN作用下对PHC-AB400(80)型管桩进行桩身抗剪承载力足尺构件试验.详细介绍加载装置和试验方法，得到该桩型在无轴压受剪和轴压受剪状态下的开裂荷载和极限荷载.基于管桩在无轴压受剪和轴压受剪状态下裂缝发展的观察以及对支座与加载点间剪跨段混凝土主拉应力与主拉应力角的分析，研究该桩型的破坏过程.比较由《预应力混凝土管桩图集》中的公式计算得到的数值和试验值可知，公式值约为试验值的58%.因此，建议管桩抗剪承载力的计算公式中考虑箍筋的抗剪作用.

关键词: PHC管桩, 抗剪承载力, 破坏过程, 轴压, 足尺构件试验

Abstract: Tests on shear capacity of the pre-stress high-strength concrete (PHC) AB400(80) pipe piles were carried out, without axial force and under an axial forces of 1 300 kN, respectively. The loading devices and testing method were introduced first in this paper. The cracking and ultimate shear capacities of PHC-AB 400(80) were obtained with and without the axial forces. The failure process during shearing was studied based on the observation of crack development and an analysis of the maximum principal stress and its angle of concrete in the shear span section. Comparison between the values of shear capacity calculated according to the Standard of Pre-stressed Concrete Pipe Pile and from the test results shows that the former is about 58% of the later. The role of stirrup should be taken into account in the formula for calculating the shear capacity of PHC pipe piles.

Key words:  PHC pipe pile, axial pressure, failure process, full scale test, shear capacity

中图分类号: 

© 2019 上海大学学报(自然科学版)编辑部
办公地址：上海市宝山区南陈路333号上海大学东区3#楼221室电话：021-66135508　 传真：021-66132736　 E-mail： xuebao@mail.shu.edu.cn
通信地址：上海市上大路99号上海大学126信箱 邮编：200444
本系统由北京玛格泰克科技发展有限公司设计开发 技术支持：support@magtech.com.cn