预应力空腹桁架渡槽施工技术  

Construction Technology of Prestressed Vierendeel Truss Aqueduct

作　　者：冯凯 强蕾 FENG Kai;QIANG Lei(Zhonglei Engineering Cost Consulting Co.,Ltd.,Beijing 102500)

机构地区：[1]中磊工程造价咨询有限公司,北京102500

出　　处：《四川水力发电》2024年第S02期113-116,126,共5页Sichuan Hydropower

摘　　要：青海引大济湟工程39号渡槽位于拦隆口镇卡阳景区,全长178 m,共5跨,该工程采用空腹桁架整体浇筑逐跨张拉完成后进行槽身施工的方案。其中4跨单跨长度为40 m的槽身位于桁架下弦杆上方,共5跨。从工程下承式空腹桁架式渡槽所需材料设备、模板和脚手架安装方式、混凝土施工方案、预应力施加过程等几方面进行了阐述,同时对模板施工的稳定性进行了安全演算,并对工程可行性进行了论证。The No.39 aqueduct of Water Diversion Project from Datong River to Huangshui River in the Qinghai Province is located in Kayang of Lanlongkou town.The total length of the aqueduct is 178m and consists of 5 spans.The project adopts the scheme of integral casting of the hollow truss and the construction of the trough body after the tensioning of each span is completed.4 spans are through vierendeel trusses with single-span-length 40m,and the aqueduct body is located above the lower chord of the truss,with a total of 5 spans.The thesis mainly discusses the materials required for the project,the installation method of the formwork and scaffolding,the concrete construction plan,and the prestressing process.At the same time,the thesis carries out safety calculations on the stability of the formwork construction and demonstrates the feasibility of the project.

关 键 词：引大济湟工程 预应力 空腹桁架 渡槽 施工技术 

分 类 号：TV741[水利工程—水利水电工程] TV52TV7