老巖溝大橋上部結(jié)構(gòu)施工組織設(shè)計方案.doc

老巖溝大橋上部結(jié)構(gòu)施工組織設(shè)計方案

一， 工程概述
（一） 構(gòu)造形成：
     本橋跨越一深溝槽，橋梁的起訖點號K104+934.98~K105+074.02，橋梁中心樁號為K105+030.00，交角為90°，全長139.04M。
本橋位于直線段內(nèi)，橋面縱坡-3%，橋面橫坡為-2%，無超高。                     
  1，上部構(gòu)造：
本橋上部構(gòu)造采用4-30M預(yù)應(yīng)力鋼筋混凝土T梁，預(yù)應(yīng)力混凝土強(qiáng)度等級為C50，全橋共分4孔。橋面寬度：2X（凈11.00+2X0.5）米。預(yù)應(yīng)力T梁預(yù)制梁長為29.9米，預(yù)制梁高為1.8米，橫斷面上布置為12片，全橋共有48片。橋面鋪裝采用10cm厚的C30防水混凝土和9cm厚的瀝青混凝土，共厚19cm，在瀝青混凝土鋪裝之前，應(yīng)在水泥混凝土鋪裝上均勻撒布FTY-I型防水劑。本橋4孔一聯(lián)，除兩橋臺設(shè)置滑板球冠支座，其余均設(shè)置普通球冠支座；墩頂設(shè)置橋面連續(xù)，兩橋臺處設(shè)置仿毛勒80型伸縮縫。
2，下部構(gòu)造：
下部結(jié)構(gòu)采用柱式墩，墩高20.323m~27.457m（左幅，右幅）。墩帽及擋塊為現(xiàn)澆C30混凝土；墩柱為現(xiàn)澆C30混凝土；系梁為C30混凝土；擴(kuò)大基礎(chǔ)為C25混凝土；臺帽及擋塊為現(xiàn)澆C30混凝土；臺后設(shè)置8米長橋頭搭扳，C15片石混凝土基礎(chǔ)，臺
Ditch the old rock bridge superstructure construction organization design

I. Project Description
(A) structure was formed:
     The bridge across a deep trench, bridge Ends No. K104 +934.98 ~ K105 +074.02, bridges Stake Center for the K105 +030.00, angle is 90 °, full 139.04M.
This bridge is located in straight line, the bridge longitudinal -3% -2% for the deck cross slope, no high.
  1, the upper structure:
Part of the bridge structure with 4-30M prestressed concrete T beams, prestressed concrete strength grade was C50, full-bridge consists of four holes. Deck Width: 2X (net 11.00 +2 X0.5) meters. Precast prestressed T beams is 29.9 meters long, 1.8 m high precast beams, the cross section arranged for the 12, a total of 48 full-bridge. Deck with 10cm thick C30 waterproof concrete and 9cm thick asphalt concrete, a total thickness of 19cm, before the asphalt concrete pavement, concrete pavement should be evenly spreading FTY-I-based waterproofing agent. 4 holes of the bridge a joint, in addition to the two abutment crown to set the ball sliding bearings, the rest are set to the highest normal ball bearing; set the bridge pier top row, the two abutment Department set wool Le 80 type joints.
2, bottom structure:
Substructure using column pier, pier height 20.323m ~ 27.457m (left site and right pieces). Pier cap and the concrete block was cast C30; Pier C30 concrete for the cast; tie beam for the C30 concrete; expanding base C25 concrete; Taiwan, and hats for the cast C30 concrete block; Desk Set 8 meters long bridge after the ride Wrench, C15 rubble concrete foundation, Taiwan
 

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