老岩沟大桥上部结构施工组织设计方案.doc

老岩沟大桥上部结构施工组织设计方案

一， 工程概述
（一） 构造形成：
     本桥跨越一深沟槽，桥梁的起讫点号K104+934.98~K105+074.02，桥梁中心桩号为K105+030.00，交角为90°，全长139.04M。
本桥位于直线段内，桥面纵坡-3%，桥面横坡为-2%，无超高。                     
  1，上部构造：
本桥上部构造采用4-30M预应力钢筋混凝土T梁，预应力混凝土强度等级为C50，全桥共分4孔。桥面宽度：2X（净11.00+2X0.5）米。预应力T梁预制梁长为29.9米，预制梁高为1.8米，横断面上布置为12片，全桥共有48片。桥面铺装采用10cm厚的C30防水混凝土和9cm厚的沥青混凝土，共厚19cm，在沥青混凝土铺装之前，应在水泥混凝土铺装上均匀撒布FTY-I型防水剂。本桥4孔一联，除两桥台设置滑板球冠支座，其余均设置普通球冠支座；墩顶设置桥面连续，两桥台处设置仿毛勒80型伸缩缝。
2，下部构造：
下部结构采用柱式墩，墩高20.323m~27.457m（左幅，右幅）。墩帽及挡块为现浇C30混凝土；墩柱为现浇C30混凝土；系梁为C30混凝土；扩大基础为C25混凝土；台帽及挡块为现浇C30混凝土；台后设置8米长桥头搭扳，C15片石混凝土基础，台
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