预应力桥图纸.dwg

2008-10/预应力桥图纸.rar一、设计依据
1．公路桥涵设计通用规范（JTJ021-89）。
2．公路钢筋混凝土及预应力混凝土桥涵设计规范（JTJ023-85）。
3．公路桥涵地基与基础设计规范（JTJ024-85）。
二、基本情况
***桥是在**公路***1号桥的内侧加宽8.1m形成：2×0.55（安全带）+2×7.0m （行车道）+1.5m（中央分隔带）的新桥。我院于99年6月底对该桥位进行了桥位测量，测得老桥起讫点桩号为：K0+041.12~K0+134.67（假定桩号）；新加宽部分的起讫点桩号为：K0+060.39~K0+131.716，其技术标准：
桥面净空：净-7+2×0.55m
设计荷载：汽车-20级，挂车-100
桥面纵坡：0%；横坡：1.5%（单向）
桥位场区地震裂度小于规范要求，未考虑地震设防。
三、地质情况
甲方未提供桥位处的地质资料，但两岸均有明显的片麻岩露头。设计要求桥台基础底面应置于承载能力不小于1Mpa的新鲜岩石面上，若施工开挖到设计标高后无法满足设计要求的承载能力，请施工单位和甲方务必通知设计单位，以便采取措施解决。
四、桥型结构
First, design basis
1. General Highway Bridge Design Specification (JTJ021-89).
2. Reinforced concrete and prestressed concrete highway bridges and culverts (JTJ023-85).
3. Highway Bridge Design Code base and foundation (JTJ024-85).
Second, the basic situation
*** *** Road Bridge is No. 1 in ** the inside of the bridge widening 8.1m form: 2 × 0.55 (seat belt) +2 × 7.0m (lane) +1.5 m (median) of new Bridge. Our hospital in 99 years by the end of June to the bridge site for the bridge position measurement, the measured Stake for the Old Bridge Ends: K0 +041.12 ~ K0 +134.67 (assuming Stake); new widened as part of the Ends Stake : K0 +060.39 ~ K0 +131.716, its technical standards:
Bridge clearance: Net -7 +2 × 0.55m
Design load: Automotive -20 level, trailers -100
Deck Longitudinal: 0%; cross slope: 1.5% (one-way)
Bridge location field earthquake intensity zone is less than specifications, are not considered earthquake fortification.
Third, geological conditions
Party did not provide the bridge is located at the geological data, but both sides have had significant gneiss outcrops. Design requirements should be placed in the underside of abutment foundation bearing capacity of not less than 1Mpa fresh rock surface, if after the excavation to the design level can not meet the design requirements of carrying capacity, please be sure to notify the construction unit and design unit Party to take measures to address.
4, the bridge structure