大跨度、高悬空、大截面混凝土井字梁模板支撑体系设计.pdf

工程建设与管理 2014．4中国水利 大跨度、高悬空、大截面混凝土 井字梁模板支撑体系设计 王永祥，苏同。周艳平 (中国水利水电第四工程局有限公司二分局龙江Z-程项目部，678400，芒市) 摘 m高程联系梁采 要：龙江水电站枢纽由混凝土双曲拱坝、左岸引水系统及地面式厂房组成。主要介绍了847 用斜拉索吊模法支撑结构的设计难点、方案选择、结构设计及验算，从而解决了该部位混凝土支撑结构的重大难 题，方案可行。优点突出，为高悬空大跨度、大截面梁的施工创造了先例，可供类似工程实践参考。 关键词：井字梁；支撑设计；斜拉索支撑；龙江水电站 beamformwork of and concretecross supportsys- Designbigspan，highlysuspendedbig—cross—section tem／／WangYongxiang，SuTong，ZhouYanping ofa double—curvatureconcretearch diversion Station dam，water composes sys— Abstract：LongjiangHydropower ternontheleftbankand introductionismadeonthe ofcable—stayed groundpowerplants．An application modelfor a 847m elevationconnection difficult the during overhan百ng supporting high beam，includingpoints with structureforthe of andcheckcalculation．Problems design，selectionoptions，structuredesign suppoaing forthe of SUS— concreteatthis are solvedthatcanbeuseda construction point being pilot bigspan，highly andreferencedothersimilar aswell． and concretecrossbeam by projects pendedbig—cmss—section words：cross Station Key be