Please wait a minute...
浙江大学学报(工学版)  2017, Vol. 51 Issue (7): 1300-1308    DOI: 10.3785/j.issn.1008-973X.2017.07.005
土木工程     
复合配筋混凝土预制方桩接头抗弯性能试验
徐铨彪1, 陈刚1, 贺景峰2, 龚顺风2, 肖志斌1
1. 浙江大学建筑设计研究院有限公司, 浙江 杭州 310028;
2. 浙江大学 结构工程研究所, 浙江 杭州 310058
Flexural performance experiment of connection joint for composite reinforcement concrete prefabricated square piles
XU Quan-biao1, CHEN Gang1, HE Jing-feng2, GONG Shun-feng2, XIAO Zhi-bin1
1. Architectural Design and Research Institute of Zhejiang University Limited Company, Hangzhou 310028, China;
2. Institute of Structural Engineering, Zhejiang University, Hangzhou 310058, China
 全文: PDF(9109 KB)   HTML
摘要:

为了提高混凝土预制方桩的连接性能,重新设计了桩身的连接接头.通过对3种常用桩型共9根复合配筋混凝土预制方桩接头试件进行足尺度抗弯性能试验,研究方桩连接接头的抗弯承载力、变形延性及破坏特征等.结果表明:方桩接头试件破坏时,桩身混凝土裂缝分布紧密,裂缝竖向发展分叉较多,部分裂缝相互交错;复合配筋混凝土预制方桩接头试件的极限抗弯承载力试验值远大于桩身极限抗弯承载力规范公式的计算值,且都大于50%以上;方桩接头试件破坏形式主要有两种:桩身正截面抗弯破坏和端板与桩身连接破坏,发生桩身正截面抗弯破坏的接头试件具有更好的承载能力和变形性能.

Abstract:

The connection joint of the pile was redesigned to improve the connection performance of concrete prefabricated square piles. The full-scale flexural performance experiments of nine connection joint specimens of composite reinforcement concrete prefabricated square pile for three kinds of commonly-used pile types were conducted to analyze the flexural capacity, deformation ductility and failure characteristics of the connection joint. The test results show that the concrete cracks in the pile are closely distributed and have more bifurcations at the connection joint specimen failure of square piles, and some of them are staggered with each other. The experimental result of the ultimate flexural capacity of the connection joint specimen for composite reinforcement concrete prefabricated square pile is all over 50% greater than the calculated value of the ultimate flexural capacity of the pile body from the specification formula. The connection joint specimens of the square pile have two kinds of failure modes, i.e. the flexural failure of pile body and the connection failure between the end-plate and the pile body. For the flexural failure of the pile body, the connection joint specimen has better flexural capacity and deformation performance.

收稿日期: 2016-04-04 出版日期: 2017-07-08
CLC:  TU473  
基金资助:

国家自然科学基金资助项目(51479176,51009122)

通讯作者: 龚顺风,男,教授.ORCID:0000-0002-4184-9639.     E-mail: sfgong@zju.edu.cn
作者简介: 徐铨彪(1976—),男,副研究员,从事基础工程与桩基础的研究.ORCID:0000-0001-6778-803X.E-mail:18080397@qq.com
服务  
把本文推荐给朋友
加入引用管理器
E-mail Alert
作者相关文章  

引用本文:

徐铨彪, 陈刚, 贺景峰, 龚顺风, 肖志斌. 复合配筋混凝土预制方桩接头抗弯性能试验[J]. 浙江大学学报(工学版), 2017, 51(7): 1300-1308.

XU Quan-biao, CHEN Gang, HE Jing-feng, GONG Shun-feng, XIAO Zhi-bin. Flexural performance experiment of connection joint for composite reinforcement concrete prefabricated square piles. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 2017, 51(7): 1300-1308.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2017.07.005        http://www.zjujournals.com/eng/CN/Y2017/V51/I7/1300

[1] 李伟兴,万月荣,刘庆斌.世博会主题馆抗拔PHC管桩新型连接的计算分析及试验研究[J].建筑结构学报,2010,31(5): 86-94. LI Wei-xing, WAN Yue-rong, LIU Qing-bin. Design and experimental study on a new connection between PHC up lift pile segments of the Expo Theme Pavilion [J]. Journal of Building Structures, 2010, 31(5): 86-94.
[2] 齐金良,周平槐,杨学林,等.机械连接竹节桩在沿海软土地基中的应用[J].建筑结构,2014,44(1): 73-76. QI Jin-liang, ZHOU Ping-huai, YANG Xue-lin, et al. Application of mechanical-connection bamboo joint piles in the coastal soft soil foundation [J]. Building Structure, 2014, 44(1): 73-76.
[3] 刘芙蓉,贾燎,李枨.预应力混凝土空心方桩焊接接头抗弯试验研究[J].武汉理工大学学报, 2008, 30(5): 105-108. LIU Fu-rong, JIA Liao, LI Cheng. The test study on welding joint flexural bearing capacity of prestressed concrete hollow square pile [J]. Journal of Wuhan University of Technology, 2008, 30(5): 105-108.
[4] 范钦建, 黄广龙, 缪海林, 等. 抗拔方桩新型连接的计算分析及试验研究[J]. 岩土工程学报, 2013, 35(增2): 1011-1015. FAN Qin-jian, HUANG Guang-long, MIAO Hai-lin, et al. Computational analysis and experimental study on a new connection between segments of square uplift piles [J]. Chinese Journal of Geotechnical Engineering, 2013, 35 (supple.2): 1011-1015.
[5] 黄广龙, 颜荣华, 周文苑, 等. 预应力混凝土管桩接头抗弯承载力试验[J]. 江苏科技大学学报:自然科学版, 2011, 25: 209-212. HUANG Guang-long, YAN Rong-hua, ZHOU Wen-yuan, et al. Experimental study on joint flexural bearing capacity of prestressed concrete pipe piles [J]. Journal of Jiangsu University of Science and Technology: Natural Science, 2011, 25: 209-212.
[6] 郭杨,崔伟,陈芳斌,等.一种抱箍式连接PHC抗拔管桩的计算分析和试验研究[J]. 岩土工程学报, 2013,35 (增2): 1007-1010. GUO Yang, CUI Wei, CHEN Fang-bin, et al. Analysis and experimental study of a PHC uplift pile with hold-hoop connection [J]. Chinese Journal of Geotechnical Engineering, 2013, 35(suppl.2): 1007-1010.
[7] 张忠苗,刘俊伟,谢志专, 等.新型混凝土管桩抗弯剪性能试验研究[J].岩土工程学报,2011, 33(增2): 271-277. ZHANG Zhong-miao, LIU Jun-wei, XIE Zhi-zhuan, et al. Experimental study on flexural and shearing properties of modified concrete pipe piles [J]. Chinese Journal of Geotechnical Engineering, 2011, 33(supple. 2): 271-277.
[8] 张忠苗,刘俊伟,邹健,等.加强型预应力混凝土管桩抗弯剪性能试验研究[J]. 浙江大学学报:工学版, 2011, 45(6): 1074-1080. ZHANG Zhong-miao, LIU Jun-wei, ZOU Jian, et al. Experimental study on flexural and shearing property of reinforced prestressed concrete pipe pile [J]. Journal of Zhejiang University: Engineering Science, 2011, 45(6): 1074-1080.
[9] AKIYAMA M, ABE S, AOKI N, et al. Flexural test of precast high-strength reinforced concrete pile prestressed with unbonded bars arranged at the center of the cross-section [J]. Engineering Structures, 2012, 34: 259-270.
[10] 徐铨彪,陈刚,贺景峰,等.复合配筋混凝土预制方桩抗弯性能试验[J].浙江大学学报:工学版, 2016, 50(9): 1768-1775. XU Quan-biao, CHEN Gang, HE Jing-feng, et al. Flexural performance experiment of composite reinforcement concrete prefabricated square piles [J]. Journal of Zhejiang University: Engineering Science, 2016, 50(9): 1768-1775.
[11] 中华人民共和国国家质量监督检验检疫总局,中国国家标准化管理委员会.预应力混凝土用钢棒:GB/T5223.3-2005[S].北京:中国标准出版社,2005: 1-4.
[12] 中华人民共和国住房和城乡建设部.冷拔低碳钢丝应用技术规程:JGJ19-2010[S].北京:中国建筑工业出版社,2010: 3-7.
[13] 中华人民共和国国家质量监督检验检疫总局,中国国家标准化管理委员会.碳素结构钢:GB/T700-2006[S].北京:中国标准出版社, 2006: 1-6.
[14] 中华人民共和国国家质量监督检验检疫总局,中国国家标准化管理委员会.先张法预应力混凝土管桩:GB 13476-2009[S].北京:中国标准出版社,2009: 7-9.
[15] 中华人民共和国住房和城乡建设部, 中华人民共和国国家质量监督检验检疫总局. 混凝土结构试验方法标准:GB50152-2012[S].北京:中国建筑工业出版社,2012: 11-34.
[16] 中华人民共和国住房和城乡建设部, 中华人民共和国国家质量监督检验检疫总局. 混凝土结构设计规范: GB 50010-2010 [S]. 北京: 中国建筑工业出版社, 2010: 34-100.

[1] 王忠瑾, 张日红, 王奎华, 方鹏飞, 谢新宇, 徐韩强, 李金柱. 能源载体条件下静钻根植桩承载特性[J]. 浙江大学学报(工学版), 2019, 53(1): 11-18.
[2] 张正旋, 陈刚, 徐铨彪, 龚顺风, 肖志斌, 刘承斌. 预应力钢绞线超高强混凝土H型桩弯剪性能试验研究[J]. 浙江大学学报(工学版), 2019, 53(1): 31-39.
[3] 丁智, 张霄, 周联英, 陈自海. 近距离桥桩与地铁隧道相互影响研究及展望[J]. 浙江大学学报(工学版), 2018, 52(10): 1943-1953.