摘要
预应力混凝土节段预制拼装梁施工中,传统的预应力孔道直接拼接工艺,不能完全保证预应力孔道的密封性和预应力钢绞线的耐久性。本文结合节段拼装科研课题,利用新型材料设计一种孔道接头,并通过其成孔工艺和接头的密封性能试验,提出了合理有效的预应力孔道成孔施工工艺,研制出节段预制拼装梁预应力孔道接头成套产品。
In the construction of prior-stress concrete segment precast concrete beam,it can not completely guarantee the tightness of prior-stress channel and the durability of prior-stress steel strand by the traditional direct splicing technology.Based on the segment assembling scientific research topic,a new type of material is used to design a kind of channel joint,and through its hole forming process and the sealing property test of the joint. By the research findings,a reasonable and effective prior-stress hole forming process is put forward,and a prestressed hole joint product of the prefabricated assembly beam is developed.
作者
尚庆保
Shang Qingbao(China Railway Fifth Survey and Design Institute Group Co. Ltd. , Beijing 102600, China)
出处
《铁道建筑技术》
2017年第4期53-56,60,共5页
Railway Construction Technology
基金
中国铁路总公司重大科研开发课题(2015G002-E)
关键词
预制节段拼装梁
预应力孔道
孔道接头
密闭性
precast segment assembling beam
prior-stress duct
channel joint
sealing property
