特大桥专项施工方案-终稿

G3015克-塔高速公路第一合同段达尔布特特大桥专项施工方案目录1.编制依据··················································································-1-2.工程概述··················································································-1-2.1工程概况及主要工程量...............................................................................-1-2.2自然条件.......................................................................................................-2-3.进度计划··················································································-2-4.临建设施布置············································································-3-4.1施工道路.......................................................................................................-3-4.2施工用电.......................................................................................................-3-4.3施工用水.......................................................................................................-3-4.4施工用风.......................................................................................................-4-5.特大桥施工···············································································-4-5.1施工工艺流程图...........................................................................................-4-5.2桩基施工.......................................................................................................-4-5.3承台施工.....................................................................................................-12-5.4墩柱施工.....................................................................................................-14-5.5盖梁施工.....................................................................................................-19-5.7桥面铺装.....................................................................................................-23-5.8伸缩缝及护栏施工.....................................................................................-24-6.冬季施工保证措施····································································-25-7.资源配置················································································-25-7.2施工人员配置.............................................................................................-25-7.3施工设备配置.............................................................................................-25-7.4主要材料配置.............................................................................................-27-8.质量、安全、环保保证措施························································-27-8.1质量保证措施.............................................................................................-27-8.2安全保证措施.............................................................................................-28-8.3环保措施.....................................................................................................-30-9.文明施工················································································-30-G3015克-塔高速公路第一合同段达尔布特特大桥专项施工方案-1-达尔布特特大桥专项施工方案1.编制依据1.克拉玛依-塔城段高速公路工程招标文件。2.克拉玛依-塔城段高速公路施工图纸（达尔布特特大桥分册）及答疑文件。3.新疆高速公路标准化指南。4.交通部现行相关技术标准、规程、规范。5.现场勘探资料。2.工程概述2.1工程概况及主要工程量2.1.1工程概况达尔布特特大桥位于新疆塔城托里县铁厂沟镇达尔布特河上，桥长1000米，起点桩号为K31+576，终点桩号为K32+576，分为左右幅，桥孔跨布置均为4×(3×40)m+4×40m+3×(3×40)m，上部结构采用预应力T梁，先简支后桥面连续。桩基类型为摩擦桩，墩柱有三种形式，分别为薄壁空心墩、实心墩和双柱墩，桥台采用U型台，台基为扩大基础。2.1.2主要工程量主要工程量一览表项目名称数量备注C50砼18334.3m³C40砼23029.8m³C30砼16439.9m³C25砼820.0m³φs15.2钢绞线636.04tHRB钢筋制安3801.3tHPB钢筋制安3442.0t波纹管71088m型钢制安988.0tG3015克-塔高速公路第一合同段达尔布特特大桥专项施工方案-2-2.2自然条件2.2.1地形地貌达尔布特特大桥处于构造剥蚀低山区,该区位于加依尔山山间，山体主要呈西南-东北走向，地势北高南低，区内两岸山体基岩裸露，冲沟较发育。桥址区在准噶尔西北界山扎依尔山西北侧达尔布特河中游地段，达尔布特河两岸为中低山，中部跨一U型河谷，两岸地势较陡，坡角约30~50°，局部呈陡崖状地形，海拔高程835~945m。2.2.2地质情况工程区处于准噶尔~北天山褶皱系，本桥所涉及的主要地层为石灰系下统。岩性相对单一，主要为灰-灰黑色、青灰色厚层块状、细-粗粒凝灰岩与层凝灰岩的不均匀互层，夹暗灰色至灰黑是凝灰质粉砂质泥岩、火山灰层凝灰岩质粉砂岩、凝灰角砾岩，在局部地段见有圆砾岩、硅质岩、生物碎屑岩及鞍山玢岩的透镜状夹层。在达尔布特河两岸及该段深切割的V型沟谷两侧会形成小规模的崩塌或泥流，对桥及边坡会产生一定的影响。2.2.3气象、水文1、气象本区域属典型的大陆性半荒漠气候，干旱少雨、春秋多风，冬季寒冷，夏季炎热，春秋季较短，冬夏温差大。年平均大风日数高达70天以上，年平均气温8.6℃，无霜期225天，平均日照时数2700小时。年平均降水量106毫米，年平均蒸发量达3000毫米以上，为降水量的30倍。近年来十月降雪，次年四月气温开始上升。4-5月及8-9月多风，风力可达7-8级，最大风力11级。2、水文本桥中部跨达尔布特河，该河为季节性水流，最大流量1-3米/秒，每年8月断流，河水沿河床向东潜流入白杨河下游。3.进度计划本桥为控制工期的工程，施工准备完成后，基础、墩台及盖梁分段分作业面依次组织施工，各工序之间形成流水作业。分项工程施工进度安排见下表，具体G3015克-塔高速公路第一合同段达尔布特特大桥专项施工方案-3-施工计划见施工计划横道图。特大桥分项工程施工进度表序号项目工期（天）开始时间完成时间1施工准备212011.4.102011.4.302灌注桩及承台912011.5.12011.8.13墩柱、桥台、盖梁3302011.6.152012.5.104T梁预制3762011.6.12012.6.105T梁安装3042011.9.12012.6.306桥面湿接缝及桥面铺装3472011.9.202012.8.317冬休期1522011.11.12012.3.314.临建设施布置4.1、施工道路为了便于施工在特大桥处修两条5m宽施工主线便道，并延伸出三条支线便道。1#主线便道由省道S201沿达尔布特河至冬窝子风景区，再由冬窝子盘山到特大桥小桩号3#墩侧，由此分支一条通往0#台侧，一条通往4#～12#墩处，另一条分支从达尔布特河岸到达钢筋加工厂、生活区以及13#-16#墩施工场地。此处便道全线贯通0#至16#墩工作面；2#由省道S201途经预制梁场、25#桥台通往大桩号处直至17#墩。4.2施工用电本工程采用当地电源，根据施工需要从省道S201的121与122里程之间哈图金矿处，架设10KV高压电线引入特大桥施工场区，长度约10Km，在场区内布置630Kw变压器一台,作为一级配电箱,从变压器接线至前方驻地,设置二级配电箱,最后通往各施工场地,设置三级配电箱。另配备200Kw发电机作为备用电源。4.3施工用水该桥用水量主要分为施工养护用水、消防用水。其中主要用水量为施工现场用水中的混凝土养护用水量。达尔布特特大桥施工用水采用4吋离心泵从达尔布特河抽水至工作面，桥面系用水从拌合一级水池用2台2吋泵抽水至工作面。由于8月份达尔布特河断流，因此在达尔布特河岸钢筋加工场处修10m×10m×2m蓄水池，用于枯水期施工养护用水蓄水池,用2台水车向水池供水。G3015克-塔高速公路第一合同段达尔布特特大桥专项施工方案-4-4.4施工用风本工程施工用风主要用于孔底通风及凿除桩头，采用3台13m3空压机4台10m3空压机，平均24根桩布