本文選題：懸索橋 + V形峽谷��； 參考：《世界橋梁》2016年06期

【摘要】：普立特大橋位于云南省宣威市,跨越典型的山區(qū)V形峽谷,主橋?yàn)橹骺?28m的雙塔單跨鋼箱梁懸索橋,主纜采用預(yù)制平行鋼絲束股,由91束91根Φ5.1mm鍍鋅高強(qiáng)鋼絲組成。結(jié)合現(xiàn)場(chǎng)實(shí)際情況,宣威岸采用重力錨,普立岸采用隧道錨,錨體均按"分層澆筑、分層支撐、分段接管、實(shí)施監(jiān)控"的方案實(shí)施。隧道錨傾角大,開(kāi)挖采用控制爆破技術(shù)減少對(duì)周邊圍巖的擾動(dòng),出渣采用有軌運(yùn)輸方式。主纜先導(dǎo)索牽引采用火箭拋擲施工方法,主纜架設(shè)采用PWS法施工。主梁為具有良好抗風(fēng)性能的扁平流線型鋼箱梁,鋼箱梁架設(shè)采用纜索吊機(jī)旋轉(zhuǎn)架設(shè)法施工。
[Abstract]:The Puli Bridge is located in Xuanwei City, Yunnan Province. It spans the typical V-shaped canyon in mountainous area. The main bridge is a 628m long suspension bridge with two towers and one span steel box girder. The main cable is made up of 91 pieces of 91 桅 5.1mm galvanized high strength steel wires. Combined with the actual situation of the site, gravity anchor is adopted in Xuanwei bank and tunnel anchor is adopted in Pruid bank. The anchors are all implemented according to the scheme of "layered pouring, layered support, piecewise take-over and monitoring". The tunnel anchor inclination is large, the controlled blasting technique is used to reduce the disturbance to surrounding rock, and the rail transportation mode is used for slag extraction. The main cable lead cable is towed by rocket throwing construction method, and the main cable erection is constructed by PWS method. The main girder is a flat streamlined steel box girder with good wind resistance.
【作者單位】： 昆明鐵路局;
【分類號(hào)】：U445.4;U448.25

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