|本期目录/Table of Contents|

[1]梁力,李鑫,李明,等.预制混凝土桩体抗扭设计及试验[J].建筑科学与工程学报,2009,26(02):87-91.
　LIANG Li,LI Xin,LI Ming,et al.Design and Experiment on Torsional Behaviors of Precast Concrete Pile Body[J].Journal of Architecture and Civil Engineering,2009,26(02):87-91.
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预制混凝土桩体抗扭设计及试验(PDF)
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
26卷
期数:
2009年02期
页码:
87-91
栏目:
出版日期:
2009-06-20

文章信息/Info

Title:
Design and Experiment on Torsional Behaviors of Precast Concrete Pile Body
作者:
梁力，李鑫，李明，王伟
东北大学资源与土木工程学院,辽宁沈阳110004
Author(s):
LIANG Li, LI Xin, LI Ming, WANG Wei
School of Resources and Civil Engineering, Northeastern University, Shenyang 110004, Liaoning, China
关键词:
钢筋混凝土;  预制混凝土桩体;  螺旋箍筋;  开裂扭矩;  极限扭矩;  变形;  裂缝
Keywords:
reinforced concrete;  precast concrete pile body;  spiral hoop;  cracking torsion;  ultim-ate torsion;  deformation;  crack
分类号:
TU473.1
DOI:
-
文献标志码:
A
摘要:
为了解决预制混凝土螺旋桩的抗扭问题,对预制混凝土桩体的抗扭性能进行了加强设计及试验研究。采用提高混凝土强度等级、配置螺旋箍筋、施加一定预应力等措施来提高预制混凝土桩体的特征扭矩; 对试件的破坏特征、开裂扭矩、极限扭矩及扭矩-扭率关系等抗扭性能进行了研究。结果表明:按估算公式计算的预制桩体开裂扭矩与试验结果基本吻合,但存在一定误差; 应选用预应力混凝土结构作为预制混凝土螺旋桩的桩型,而不选用增加配置螺旋箍筋的普通钢筋混凝土结构。
Abstract:
In order to solve the torsional problem of precast concrete screw pile in construction, the torsional behaviors of precast concrete pile body were designed strongly and studied by experimental method. The methods of improvement of concrete strength level, distribution of spiral hoop and application of some prestresses were used to improve the characteristic torsion of precast concrete pile body. Meanwhile, the torsional behaviors, such as destructive characteristic, cracking torsion, ultimate torsion and the relationships between torsion and angle of twist per unit length were studied. Results show that the calculated values of formulas of precast concrete pile body are in reasonable agreement with experimental values, and prestressed concrete structure should be selected to make precast concrete screw pile instead of common reinforced concrete structure with high ratio of spiral hoop.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2009-04-03
基金项目:沈阳市科技攻关项目(20040528)
作者简介:梁 力(1955-),男,辽宁丹东人,教授,博士研究生导师,工学博士,E-mail:ll-neu@163.com。
更新日期/Last Update: 2009-06-20