化学锚栓加固植筋混凝土构件抗震性能试验-学兔兔 www.xuetutu.com.pdf

第30卷第4期
建筑科学与工程学报
Vol 30 No
2013年12月
Journal of Architecture and Civil Engineering
Dec.2013
文章编号:1673-2049(2013)04-0054-05
化学锚栓加固植筋混凝士构件抗震性能试验
邓宗オ,钟林杭
(北京工业大学城市与工程安全防灾减灾省部共建教育部重点实验室,北京100124)
摘要:为了研究化学锚栓能否用于地震地区和受拉区混凝土构件,对化学锚栓加固植筋混凝土构件
的锚固性能进行了试验。通过拟静力试验,研究了锚固构件的破坏形态、锚栓在反复荷載作用下的
锚固效果和抗震性能。试验结果表明:化学锚栓的动载锚固效果良好,可以用于地震地区和受拉区
混凝土构件的锚固;化学锚栓提高了构件的承载力和延性,尤其在反复荷載试验后期,在限制构件
承载力下降和位移増大方面起到了重要作用;锚栓施工技术是影响构件抗震性能的重要因素。
关键词:化学锚栓;混凝土构件;抗震性能;承载力;廷性
中图分类号:TU375
文献标志码:A
Experiment on Seismic Behavior of RC Members with Planting
Bars Confined by Chemical Anchor
DENG Zong-cai, ZHONG Lin-hang
( Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education
Beijing University of Technology, Beijing 100124, China)
Abstract. In order to research whether the chemical anchor could be used in seismic area or tensile
region of reinforced concrete(RC) members, the test on the anchor behavior of RC members
confined by chemical anchor was carried out. Through quasi static test, the failure modes of RC
members confined by chemical anchors, the effects of anchor and the seismic behavior were
studied under cyclic load. The experiment results show that the dynamic anchor effectiveness of
chemical anchor is good, and the anchor can be used in seismic area or tensile region of RC
members. The bearing capacity and ductility of members are enhanced by the chemical anchor
especially in later period of cyclic load test, the chemical anchor plays an important role in
preventing the decrease of bearing capacity and increase of displacement. The anchor construction
technology is an important influence factor on the seismic behavior of members
Key words: chemical anchor; RC member; seismic behavior; bearing capacity; ductility
0引言
定锚栓是否能够用于地震区结构工程。由于锚栓动
载性能试验装置复杂,没有统一的试验方法、设备和
化学锚栓以其性能可靠、施工简便等优点被广标准,各国学者对此研究甚少。工程中所用锚栓的
泛应用于建筑物扩建、改造、加固和设备安装等工种类较多15,性能各异,在地震作用下受力复杂,作
程],目前,锚栓的设计主要是以单向拉拔试验为为结构构件的重要连接件,有必要对锚固构件的抗
依据来确定错固深度。中国是多地震国家,需要确震性能进行深入的研究。化学锚栓在工程中常被
收稿日期:2013-10-09
基金项目:国家自然科学基金项目(51378032)
作者简介:邓宗才(1961-),男,映西扶风人,教授,博士研究生导师,工学博士,博士后,E-mail:dengel@bjut.edu.cn。