發(fā)布時間：2018-05-07 03:19

  本文選題：鐵路公路兩用橋 + 斜拉橋�。� 參考：《橋梁建設》2017年03期

【摘要】：滬通長江大橋主航道橋為主跨1 092m的雙塔鋼桁梁斜拉橋,6個橋墩均采用沉井基礎,沉井上部為鋼筋混凝土結構,下部為鋼結構。橋墩處水深10~30 m,雙向潮流,最大流速達3.15m/s;橋塔墩、邊墩與輔助墩鋼沉井的最大錨泊力分別達9 600kN和1 560kN。橋塔墩沉井采用"大直徑鋼樁+混凝土重力錨"錨碇系統(tǒng),采用8(10)根直徑3.5m鋼樁和8個8 800kN混凝土重力錨,利用直徑110mm鋼絲繩與沉井頂面16(18)臺350t連續(xù)千斤頂相連,通過連續(xù)千斤頂多向快速定位收緊系統(tǒng),同步對沉井的平面位置及扭角進行快速調整;邊墩、輔助墩鋼沉井采用"沉井內(nèi)部大直徑鋼樁定位"錨碇系統(tǒng),每墩僅用4根預先插打且相互獨立的鋼樁進行沉井定位。
[Abstract]:The main channel bridge of Hutong Yangtze River Bridge is a double-tower steel truss girder cable-stayed bridge with a main span of 109.2 m. The six piers are based on caisson foundation, the upper part of the caisson is reinforced concrete structure, and the lower part is steel structure. The water depth at the pier is 1030m, the bidirectional tidal current is 3. 15m / s, and the maximum anchoring force of steel caisson of tower pier, side pier and auxiliary pier is 9 600kN and 1 560kNrespectively. The bridge tower pier caisson adopts the Anchorage system of "large diameter steel pile concrete gravity anchor", adopts 810 steel pile with 3. 5m diameter and 8 800kN concrete gravity anchor. The diameter 110mm wire rope is connected with the 350t continuous Jack on the top surface of the caisson. The plane position and torsion angle of the caisson are adjusted quickly by means of the multi-direction fast positioning and tightening system of continuous Jack, and the Anchorage system of "large diameter steel pile positioning inside the caisson" is used in the side pier and auxiliary pier steel caisson. Each pier is located by only 4 pre-inserted and independent steel piles.
【作者單位】： 中鐵大橋局集團有限公司;
【基金】：中國鐵路總公司科技研究開發(fā)計劃項目(2014G004-B)~~
【分類號】：U448.27

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