大跨度预应力空心板在拉西瓦工程中的应用  

Application of Large-Span Pre-stressed Hollow Slab to the Laxiwa Hydropower Project

作　　者：王玉孝[1] 任亚虎 李矫娜 

机构地区：[1]青海黄河上游水电开发有限责任公司工程建设分公司,青海贵德811700 [2]中国水利水电第十一工程局有限公司五分局,青海贵德811700

出　　处：《水力发电》2009年第11期32-34,共3页Water Power

摘　　要：拉西瓦水电站750 kV户外出线楼屋面采用大跨度预应力空心板和现浇板梁叠合结构相结合方式,为确保施工质量,加快施工进度,从大跨度预应力空心板生产施工技术、板端裂缝控制等方面进行研究与应用。放张后板端裂缝控制在0.4 mm以内,单板静载试验结果显示荷载承载力达到35.5 kN/m2,板梁叠合屋面结构静载试验结果显示屋面荷载承载力大于115 kN/m2。The combination of large-span pre-stressed hollow slab and the cast-in-place plate girder structure is used in the floor roof of 750 kV outgoing building for Laxiwa Hydropower Station. In order to ensure the construction quality and speed up the construction progress, the production technology of large-span pre-stressed hollow plate and crack control are applied and studied. After the release of stress, cracks is controlled within less than 0.4 mm; static load test on single plate shows the bearing capacity had been to 35.5 kN/m^2; static load test on girder composite plate shows the bearing capacity of roof structure is greater than 115. kN/m^2.

关 键 词：空心板 出线楼 预应力 大跨度结构 拉西瓦水电站 

分 类 号：TU756.44[建筑科学—建筑技术科学]