跨海公路大桥一体化快速架设技术创新.pdf

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1、浙江交通集团副总工 杭绍甬板块总工 沪杭甬板块首席顾问 宁波舟山港主通道指挥部副总指挥兼总工 方明山方明山 MingshanMingshan Fang Dr.Fang Dr.Deputy Chief Engineer of CICODeputy Chief Engineer of CICO Chief Engineer of NZPMP Chief Engineer of NZPMP 宁波舟山港主通道工程技术创新宁波舟山港主通道工程技术创新 Technical Innovation of Ningbo-Zhoushan Port Main Passage(NZPMP)Content 工程背景工

2、程背景 Background of NZPMP Background of NZPMP 工程挑战工程挑战 Challenges of NZPMPChallenges of NZPMP 技术创新技术创新 Technical InnovationTechnical Innovation 工程对策工程对策 Countermeasure of NZPMPCountermeasure of NZPMP 设计理念 01 施工工艺 工程背景 Background of NZPMP 沪舟甬大通道HZY Great Passage 杭州湾杭州湾 HZB Area 技 术 标 准 Design standard

3、公路等级 Highway Grade 高速公路(双向四车道)Expressway(two-way four-lane)设计速度 Design driving speed 100km/h 路基宽度 Roadbed width 26.0m 荷载等级 Load grade 公路-I级 Highway Grade I 设计洪水频率 Design flood frequency 特大桥1/300；其他1/100 Super major br.(1/300),Others1/100 基本风速 Basic wind speed 42.3m/s (鱼山大桥Yushan Br.,44.3m/s）平潭Pingta

4、ng Br.,44.8m/s、西堠门Xihoumen Br.,41.2m/s 鱼山支线大桥 YushanYushan BridgeBridge 舟岱大桥 ZhoudaiZhoudai BridgeBridge 富翅门大桥 FuchimenFuchimen BridgeBridge 南通航孔桥 Southern channel bridge The steel box girder cable-stayed bridge Span arrangement：(74+106+390+106+74)m=750m 主通航孔主通航孔桥桥 Main channel bridge Main channel b

5、ridge 跨径布置：(78+187+550+550+187+78)m=1650m 北通航孔桥 Northern Channel bridge Continuous rigid frame Bridges Span arrangement：(125260125)m=510m 富翅门大桥 Fuchi men bridge 跨径布置：(57+108+340+108+57)m=670m 鱼山支线大桥 Yushan branch bridge Continuous rigid frame Bridges Span arrangement：(70+140+180+260+180+140+70)m=104

6、0m 设计理念 管理理02 施工工艺 工程挑战 Challenges of NZPMP 工程规模挑战 Challenge of Project Scale 总长36.777km，跨越5个航道、连接五座岛屿的桥梁集群工程 The NZPMP with a total length of 36.777km crossing five waterways and connecting the five islands.继港珠澳大桥之后最大规模的公路跨海工程；其规模与杭州湾大桥、港珠澳大桥主体桥梁工程相当 The largest highway cross-sea project after the

7、HZMB.Its scale is comparable to that of the HZBB and the main project of the HZMB.混凝土总用量：约207.1万方 Total dosage amount of concrete:about 2.07million m3.钢材总用量：约80.4万吨。其中，钢管桩28.3万吨，钢箱梁4.2万吨，其它钢材47.9万吨 Total usage amount of steel:about 0.8 million tons.Of these,0.283million tons of steel pipe piles,42,0

8、00 tons of steel box girder and 0.479 million tons of other steel 建设条件 挑战 Construction condition challenges The influence of monsoon is serious,the maximum can be up to 11,the average number of days of strong wind is 90 days,and the maximum is 137 days.季风影响严重，最大可达11级，平均八级以上大风天数达90d，最多达137d 基岩埋深在 451

9、31m 之间，普遍埋深120m 左右 The depth of bedrock is between 45m and 131m,and the depth of bedrock is about 120m.桥位测线地震反射剖面图 平均盐度 主通道：25 杭州湾：10.8 港珠澳：28.3 Average salinity NZPMP:25 HZBB:10.8 HZMB:28.3 海洋环境结构氯离子腐蚀问题突出 Chloride Ion corrosion of structures in Marine Environment is prominent 管理挑战 Project manageme

10、nt challenges 中途接手、项目标准及建设工期不同 品质工程示范项目要求高 High requirement of quality Engineering demonstration Project 海洋环境施工风险高（安全、工期、投资及进度）High risk of construction in marine environment(safety,duration,investment and progress)品质工程 Quality engineering 管理挑战 Project management 建设条件挑战 Complex construction conditio

11、n 建设规模挑战 Project scale 设计理念 管理理03 施工工艺 工程对策 Countermeasure of NZPMP 顶层设计顶层设计 Top-level design 工业化建造总体思路General idea of industrialization construction 工业化 需求导向Demand orientation 工业化 问题导向Problem orientation 工业化 关键举措Key initiatives 工业化 成效Effect 环境 需求Environmental needs 品质 需求Quality requirements 效益 需求Be

12、nefit requirements建设条件适应性Adaptability环境友好性Environmental friendliness安全舒适Safe and comfortable结构耐久Durability经济效益Economic benefits社会效益Social benefits过程管控Process control标准化设计Standardized design工厂化预制Factory prefabricated装配化施工Assembly construction集约化布局Intensive layout信息化管理Informatization management海上作业工序减

13、到最少Minimize marine operations海上作业时间减到最短Minimize operating time at sea海上作业人数减到最少Minimize the number of people working at sea设计层面Design dimension施工组织层面Construction dimension 三减少 理念Three reductions工程品质可控Quality controlled品质工程示范Quality Engineering工业化生产Industrial production桥梁工业化总体思路 General ideal pf Brid

14、ge Industrialization 环境需求 Environmental needs 品质需求 Quality requirements 效益需求 Benefit requirements 工业化需求导向 Demand orientation 工业化问题导向 Problem orientation 工业化关键举措 Key countermeasure 工业化成效 Effect 高品质 High quality 海上作业人数减到最少 Minimize number of workers at sea 海上作业时间减到最短 Minimize operating time at sea 海上作

15、业工序减到最少Minimize operating procedure at sea 建设条件适应性Adaptability 环境友好性Environmental friendliness 安全舒适 Safe and comfortable 结构耐久 Durability 过程控制Process control 经济效益Eeconomic benefits 社会效益 Scocial benefits 标准化设计Standardized design 工厂化预制Factory prefabrication 装配化施工Assembly construction 集约化布局Intensive lay

16、out 工业化生产Industrial production 信息化管理Information management 主要举措Major countermeasures 桥梁设计标准化、构件制造工厂化、施工装配化及管控信息化 Bridge design standardizing,components manufacturing in plant and construction assembling 设计标准化设计标准化Design Standardized 主通航孔桥 南通航孔桥 北通航孔桥（6 9）62.5m Segmental pre-casted beam 70m 整孔预制梁 94

17、70m Integral preIntegral pre-casted casted box girderbox girder 11 70m Integral preIntegral pre-casted casted box girderbox girder 38 50m Segmental pre-casted beam 9 62.5m Segmental pre-casted beam 舟岱大桥总长26.188km,，海上桥梁16.355km The total length of Zhoudai Bridge is 26.188 km,and the bridge at sea is

18、16.355km 鱼山大桥路线总长8.815km，海域桥长7.782km 71 70m Integral preIntegral pre-casted casted box girderbox girder 28 and 30m Prefabricated T-beam 长白互通 48 50 61 70m Segmental pre-casted beam 鱼山大桥 The total length of Yushan Bridge is 8.815km,and the bridge at sea is 7.782km 预制盖梁316榀 Precated cover beam 整孔箱梁370榀

19、 Integral precasted box girder 预制墩柱1344节 Prefabricated pier column 预制T梁2245片 Precated T beam 钢管桩 2388根 Steel pipe ile 节段梁数4142榀 Precasted segmental girder 总预制量10805件 Total prefabricated unit:装配化率：基础67.7%、下部结构83.2%、上部结构99.9%Assembling rate:foundation 67.7%,substructure 83.2%,superstructure 99.9%C55C5

20、5 中心中心 高度高度 Center Height (m)顶宽顶宽 Top slab width(m)底宽底宽 Bottom Slab width (m)翼缘翼缘 悬臂悬臂 Flange length(m)顶板顶板 厚度厚度 Top slab Thickness(cm)腹板腹板 厚度厚度 Web thickness(cm)底板底板 厚度厚度 Bottom slab width(cm)标准节段标准节段 长度长度 Standard segment length(m)最大最大 梁重梁重 Maximum weight（t）70m 4.0 12.55 5.50 2.95 2855 4570 2795-1

21、854 62.5m 3.6 12.55 5.75 2.95 28.0 4570 2760 3.2/3.5 93.4 50m 3.0 16.50 6.70 4.00 28.0 4570 2755 3.0/3.5 96.9 260m 413.3 12.55 5.50 2.95 3262 5090 32120 3.0/3.5/4.0/4.5 257.8 舟岱大桥 Zhoudai Bridge 非通航孔桥预制墩身墩高11.157m49.672m不等，预制类型共4类(-类)。墩身数量为368座/694节，最大节段高度为18.7m，最大吊重560t。C45 C40 C35 C35 The height o

22、f prefabricated pier piers of non-navigable bridge is different from that of 11.157m49.672m,and there are four types of prefabricated pier(class-).The number of piers is 368/694 pieces,the maximum segment height is 18.7 m,and the maximum lifting weight is 560 tons.装配式装配式预应力预应力砼砼T T梁梁 Prefabricated P

23、C T-Beam T梁跨径为梁跨径为30m或或28m跨径，单幅桥宽跨径，单幅桥宽12.50m，横向布置，横向布置6片梁片梁 The span of T beam is 30m or 28m,the width of single bridge is 12.50m,and six beams are arranged transversely.单片单片T梁高梁高2.0m、宽、宽2.07m(中中)/2.11m(边边)，湿接缝宽，湿接缝宽37cm Single unit of T beam is 2.0m high,2.07m wide(center)/2.11m(edge),wet joint w

24、idth 37cm 最大梁重最大梁重78t The maximum beam weight 78 tons C50 墩高墩高 Pier height H 盖梁盖梁宽宽 Bent cap width 立柱立柱边长边长 Column length 桩桩径径 Pile diameter 承台承台边长边长 Cushion cap length 系系梁高梁高 Cross beam height 系梁系梁宽宽 Cross width(m)(m)(m)(m)(m)(m)10m 1.7/1.9 1.2 1.6 2 1.8 1.2 1020m 1.7/1.9 1.5 1.8 2.2 1.8 1.5 202025

25、m25m 1.7/1.9 1.5 1.8 2.2 1.8 1.5 Bent Cap Precasted column Crossbeam Pile 预制拼装桥下部结构预制拼装桥下部结构 Prefabricated bridge substructure 临时工程标准化临时工程标准化Temporary engineering standardization 栈桥工程栈桥工程 Trestle works 鱼山大桥、舟岱大桥DSSG01、DSSG02及DSSG04标 Yushan Bridge,Zhoudai Bridge Contract DSSG01,DSSG02&DSSG04 富翅门大桥A标、

26、B标 Fuchimen Bridge Contract A&B 海上平台海上平台 Offshore platform 舟岱大桥DSSG03、DSSG02及DSSG04标 Zhoudai Bridge Contract DSSG03,DSSG02&DSSG04 非通承台套箱非通承台套箱 Cofferdam of platform of non-channel bridge DSSG04、DSSG02 管理理念 海上平台 Modular Construction of Marine Multi-Function platform（生产、生活及存储区）3个月（有效作业时间50天）(productio

27、n,living and Storage area)3 months(effective 50 days)圆端型 哑铃型 三哑铃型 圆形 矩形 一个成功解决的施工工艺问题 非非通航孔桥通航孔桥承台套箱设计承台套箱设计 Design of cofferdam of platform of non-channel bridge 7种类型 7Types 最重约175t The heaviest,175tons 一个未能解决的施工工艺问题 One unsuccessfully solved construction technology problem 设计理念 管理理04 施工工艺 技术创新 Tec

28、hnical Innovation of NZPMP Integrated erection of Terrestrial Bridge 常规双导梁架桥机 Conventional double-beam bridge erecting machine 立柱水平抬吊后，后天车下放翻转前天车横移到位PnPn+1Pn+2Pn+3Pn+3Accelerated Bridge Construction of Yushan Bridge 承台 Pile caps 单桩独柱结构 Single pile single column structure 桩基施工25天 Pile foundation cons

29、truction 25 days 墩身施工7天 Construction of the pier 7 days 常规桥梁 Conventional bridge 鱼山大桥 Yushan bridge 项目背景 Project context 全线栈桥7.8公里、3个月完成 Trestle Bridge 7.8km 3 months to complete 有效工作日由200天提升至300天左右 Effective working day increased from 200 to about 300 days 鱼山大桥栈桥 Yushan bridge Trestle The structure

30、 of the pier is a cylindrical vase type with single pile and single column structure,the steel skeleton is prefabricated,the maximum reinforcement skeleton length is 28 m and the weight is 35 t.It is the first time used in China。It only takes 0.5 days to install on site,which saves at least 15 days

31、compared with the traditional way.上部结构100%预制，混凝土箱梁节段预制，钢箱梁整节预制。100%prefabricated for Superstructure 非通节段梁 通航孔节段梁 主跨(span)260m hmax=12.14m 钢箱梁整节预制 Wet-joint connection of composited girder construction of Fuchimen Bridge New Building Materials for Sea-Crossing BridgesConnection of Prefabricated Pier

32、shaft of non-channel Bridge 类墩身（适用于35m45m区段）预制墩身 Prefabricated pier shaft 墩高小于20m墩身采用整体预制，钢筋混凝土结构。墩高大于20m墩身采用分节预制，分2节预制和3节预制两种情况（分节原则为单节墩高小于20m，单节吊重小于600t），墩身受力采用预应力结构。节节段个数：段个数：2 2 节节段最长：段最长：18m18m底节段底节段 节节段最重：段最重：560t560t 节节段个数：段个数：3 3 节节段最长：段最长：18.7m18.7m中节段中节段 节节段最重：段最重：540t540t 舟岱大桥 Zhoudai Bri

33、dge 分节预制墩身通过剪力键和预应力钢束连接，下节段顶部的剪力键和上节段底部的剪力槽匹配预制，现场涂抹环氧树脂后拼装为整体。分两节预制墩身内部设有12束15-15预应力钢束，分三节预制墩身在中下节墩身设置20束15-15预应力钢束。墩身下部内壁设置齿板作为下端预应力的锚固构造。墩顶为预应力张拉端，采用深埋锚工艺。本工程墩身设计采用“底节墩内齿块处P锚固定端+纵向预应力束+深埋锚张拉端”预应力体系。具有工艺成熟、技术可靠、成本低的优点。齿，块处钢筋规格型号多，钢筋安装与模板安装交替施工，难以模块化工效低；齿块处钢筋密集，纵横交错，浇注混凝土时下料、振捣难度较大。墩身竖向预应力施工存在的问题 张

34、拉端深埋锚 钢绞线活动式套筒连接器 固定端圆P型锚具 思路一：采用连接器的竖向预应力体系 预制场可提前穿束预制场可提前穿束降低风险降低风险 预应力齿块可取消预应力齿块可取消提高功效提高功效 占用浮吊时间可减少占用浮吊时间可减少节约成本节约成本 预制场提前穿束 钢绞线防腐问题 思路二：采用预应力粗钢棒体系 目前比较成熟，安装方便，施工质量易保证；主要缺点是首节钢棒须预埋和分段接长和锚固，相对钢绞线，钢棒强度较低，价格高。思路三：采用自锁式锚固预应力体系 ZSM15-15自锁式锚固预应力 A new semi-open U-rib orthotropic steel bridge deck58 过

35、焊孔 顶板 切口 横肋 腹板 U肋 顶板 U肋 腹板 竖向加劲肋 顶板顶板横肋横肋UU肋肋顶板顶板焊缝贯穿裂缝焊缝贯穿裂缝UU肋肋顶板顶板横肋横肋UU肋肋顶板顶板焊缝贯穿裂缝焊缝贯穿裂缝UU肋肋顶板顶板横肋横肋U U肋肋顶板顶板U U肋肋顶板贯穿裂缝顶板贯穿裂缝顶板顶板横肋横肋U U肋肋顶板顶板U U肋肋顶板贯穿裂缝顶板贯穿裂缝-顶板 U肋 对接焊缝-主通道通航孔桥钢箱梁 主通道孔Main Channel bridge 南通航孔Sothern channel bridge MgMdMgMd起裂位置MgMd桥面板U肋板U肋角焊缝单侧焊（外焊）D1横桥向应力1MgMd起裂位置MgMd桥面板U肋板M

36、gMdU肋角焊缝双侧焊（含内焊、外焊）D2横桥向应力2D3 a223max66122DMMDMDDMIMydg）（U肋角焊缝焊趾处 拉应力对比分析 桥面板开口U肋：U 肋尺寸 400mm380mm，热轧成型钢板 焊接变形 工效 焊缝检测 涂装 新的疲劳问题 4m 2m 2m 2m 2m 2m 内环匝道60m半径 曲线半径320m半径 F匝道曲线变宽段 20192019全国桥梁学术会议全国桥梁学术会议 2019 National Bridge Academic Conference（11.1511.17）桥梁快速绿色建造及管养技术 Rapid Green Construction&mainten

37、ance Technology of Bridges 浙江省交通投资集团有限公司浙江省交通投资集团有限公司 Zhejiang Communications Investment Group Co.,Ltd(CICO)中国公路学会桥梁和结构工程分会中国公路学会桥梁和结构工程分会 Bridge and Structural Engineering Branch of China Highway Society(CHS)千秋岁岱山望海 仙岛岸外 滩上寒潮退 浪花溅 号声碎 苍茫帆影淡 鸥鹭成双对 君不见 凭阑眺远云霞醉 望长龙相会 忆雁归秋去 滩湾险 汪洋怒 阑珊灯火处 喜看银蛇舞 俱往矣 沧海击水重飞渡 Thanks for your attentions!日月山人 2019.6.14-6.16 北京