重庆轨道交通四号线一期土建六标
施工调查报告
目
录
1.工程概况 ························································································· 3 1.1 工程简介 ····················································································· 3 1.2 技术标准 ····················································································· 4 1.2.2 设计标准 ··············································································· 4 1.3沿线自然环境 ··············································································· 6 1.3.1地形和地貌 ············································································· 6 1.3.2地层岩性 ················································································ 6 1.3.3地质结构 ················································································ 6 1.3.4 水文地质特征 ········································································· 7 1.3.5 气象特征 ··············································································· 7 1.3.6 本标段综合地质评价 ································································ 8 1.4 人文情况 ····················································································· 8 1.5.卫生防疫 ···················································································· 8 1.6.劳务情况 ···················································································· 9 2.标段施工条件 ··················································································· 9 2.1 工程现场地形地貌 ········································································· 9 2.2 征地拆迁情况 ··············································································· 9 2.3 工程周边交通条件 ········································································· 9 2.4 工程周边水、电、通信情况调查 ··························································· 10 3．施工方案意见 ················································································· 10 3.1 施工组织原则 ·············································································· 10 3.2 施工进度计划安排 ········································································ 10 3.3 施工任务划分 ·············································································· 11 3.4 临时建设安排 ············································································· 12 3.4.1 项目部设置 ··········································································· 12 3.4.2 搅拌站设置 ··········································································· 13 3.4.3 梁场设置 ·············································································· 13 3.4.5 其他 ···················································································· 13 3.5 施工便道 ···················································································· 14 3.6 施工用电 ···················································································· 15 3.7 施工用水 ···················································································· 15 3.8 弃碴场 ······················································································· 16 3.8.控制性工程、重难点工程采取的方案和措施 ······································ 16 3.8.1 工程特点分析 ········································································ 16 3.8.2 工程重难点分析 ····································································· 17 3.9. 主要机械设备配备 ······································································ 20 3.10.主要材料周边调查 ····································································· 22 3.11.环保措施 ················································································· 23 3.12 其它保证措施 ············································································ 24
重庆轨道交通四号线一期工程土建六标工地调查报告 1. 工程概况
1.1
工程简介
重庆分公司承建重庆市轨道交通四号线一期工程土建六标黑石子 站（不含）～唐栋桥站（含）区间施工任务,标段位于重庆市江北区铁山坪街道太平冲村，沿海尔路布置，唐栋桥车站位于太平冲村委会正前方约 100m 处，标段起讫里程为：k23+839.775～k26+217.4，线路全长2377.63m。
管段主要内容：本标段含一站一区间
（1）标段所含区间起点里程k23+839.775，终点里程k26+090.2， 长约 2.25km，区间包含暗挖段、明挖段、路基段及高架桥段。区间隧道断面主要为单洞双线暗挖断面，隧道衬砌结构按新奥法原理设计，采用复合式衬砌结构，钻爆法施工；高架桥段主要路段位于市主干道、高速公路及施工区，宏观地貌为构造剥蚀丘陵区，上部结构标准梁主要采用双线及单线预应力混凝土简支箱梁，移动模架法现浇施工；标准桥墩采用独柱 Y 形墩，墩截面为矩形，墩高范围为 1m～25.3m。基础为群桩基础，标准墩桩基础选用φ1.2m 或φ1.5m 钻孔灌注桩。
（2）标段所含车站为唐栋桥站，为轨道交通四号线与轨道交通十一号线（规划中）换乘车站，路侧高架岛式车站，中心里程为 k26+153.8， 总长约 126 m，总宽 23.8m。车站位于海尔路北侧，为 5 层四柱现浇框架结构。车站局部有地下室，放消防水池和变电所。地面层及地上二层 为商业预留层，地上三层为站厅层，地上四层为站台下层，地上五层为
站台层。设置出入口天桥上跨海尔路，天桥全宽 6.0m，梁高 1.0m，跨度为 27.9+20m。
根据现场实地调查，结合业主总体施工组织安排，管段计划开工时间为 2014 年 9 月 1 日，竣工时间为 2016 年 5 月 20 日，总工期为 627 日历天。
项目合同总造价 23209 万元。
建设单位：重庆市轨道交通（集团）有限公司 设计单位：北京城建设计发展集团股份有限公司监理单位：西安铁一院咨询监理公司 施工单位：中铁四局集团有限公司重庆分公司
1.2
技术标准
本工程技术标准如下表：
1.2.2 设计标准
A A 与．高架桥有关数据
(1)使用年限：桥梁主体结构使用年限为 100 年；钢结构防腐体系使用年限为 20 年。
(2) 建筑限界：直线地段应满足最小线间距要求，曲线地段及岔线段按规定予以加宽，同时考虑桥上应为其它专业的管线、设备的设置预留位置。
(3) 桥下净空：跨越城市主干道、一、二级公路不小于 5m；跨越城市次干道不小于 4.5m；跨越高速公路不小于 5m；跨越城市非机动车道不小于 3.0m。
（4）正线数目及线间距：双线；标准段线间距 5.2m。
（5）车型：车辆型式采用国标As 型车，列车编组为 6 辆。车辆最大轴重 150kN，最小轴重 80kN。
（6）轨道：全线设计标准按一次铺设无缝线路，区间高架供电采用架空接触网方式。
（7）最大设计时速：100km/h。
（8）最大纵坡:35‰。
（9）最小曲线半径：350m。
（10）桥梁抗震设防烈度：桥梁抗震设防烈度为6 度，场地类别为I 类。地震力的作用，根据《重庆轨道交通四号线一期工程场地地震安全性评价报告》及现行国家标准《地铁设计规范》中的规定计算。按现行国家标准《地铁设计规范》本线高架桥抗震设防类别为B 类，抗震设防措施等级为 7 级。
B B 与．地下结构有关数据
(1)结构主要结构构件的设计使用年限为 100 年。(2)结构主要构件的安全等级为一级。
(3)地下结构抗震设防分类为乙类，按 6 度地震烈度进行抗震验算， 按 7 度地震烈度采取抗震构造措施，抗震等级为三级。
(4)地下结构中迎土面混凝土构件的环境类别为二 b 类，结构内部混凝土构件的环境类别为一类。
(5)钢筋混凝土构件（不含临时构件）正截面的裂缝控制等级一般 为三级，即允许出现裂缝，裂缝宽度：迎水面不大于 0.2mm，其它部位不大于 0.3mm。
(6)地下结构主要构件的耐火等级为一级..(7)建立沟通渠道的原则 1)两条单线隧道之间应设置一条通信通道，相邻两条通信通道之间的距离不应大于600米；；通信通道应设置平行和反向开启的甲级防火门。在区间线路的轨道旁设置逃生和救援的紧急通道，紧急通道的最小宽度不得小于550毫米。
2)带中间墙的区间隧道，每隔300米设置两个相邻的门洞，在两个相邻的门洞处设置不同开启方向的单向甲级防火门。
3)隧道内设置中间风井时，应在风井内或附近设置通向地面的防烟楼梯。
1.3 沿线自然环境
1.3.1 地形和地貌
线路主要地段位于城市主干道、高速公路和建筑区，宏观地貌为构造剥蚀丘陵区。原始地貌的发育受构造和岩性的严格控制，构造线与脊...