崇启公铁长江大桥北引桥采用公铁合建方案，全长1069.27米。上层为双向6车道的1级公路，下层为双线高铁+双线城际。其中主桥6号-NC21号墩城际侧 采用移动模架施工，主桥6号—N12号墩、N16-N18号墩铁路侧采用现浇支架；N13-N16,N18-N27号墩铁路侧为预制架设。本次浇筑的为崇启公铁长江大桥 城际侧NC20-NC21号墩梁，长40.6米，宽12.2米，浇筑混凝土总量344方，采用移动模架法现浇施工。 12月15日17:58，经过10个小时的连续作业，由中铁大桥局承建的崇启公铁长江大桥北引桥城际侧最后一孔移动模架现浇梁顺利浇筑完成，标志着大桥下 层铁路梁现浇施工任务圆满收官，为后续全面转入上层公路梁施工奠定坚实基础。 据中铁大桥局沪渝蓉高铁V标项目部北岸工区负责人范志晶介绍：通过使用可移动的模板系统，在桥梁的墩台之间逐段浇筑混凝土梁体，实现连续循环作 业，显著缩短施工周期，减少对周围环境的影响，且不受地形限制。 冬季来临，为充分做好城际侧最后一孔移动模架现浇梁的准备工作，项目部避开零度以下低温时段，提前召开专项交底会，优化完善现浇施工方案，组织 技术人员全程量测砼温度，确保砼施工质量满足规范要求 ...

渝昆高铁洛泽河特大桥合龙 中新网昭通12月16日电 (郑利超 李浦实)15日，由中铁大桥局集团承建的渝昆高铁控制性工程洛泽河特 大桥合龙，为渝昆高铁如期建成通车打下坚实基础。 洛泽河特大桥位于云南省昭通市彝良县，跨越深切峡谷，两端与隧道相接，为山区铁路典型的"两隧夹 一桥"V形地貌。桥梁长524.9米，为双幅单线预应力混凝土刚构连续梁桥，主跨180米，最大墩高达150 米。 建成后的洛泽河特大桥将成为目前世界时速350公里高速铁路跨度最大、墩身最高、边坡最高的预应力 混凝土梁桥。 面对山区峡谷复杂环境下高墩、大跨桥梁施工安全风险高的困境，项目建设团队将主梁施工优化为大节 段悬浇工艺，最大节段长度调整为6米，悬浇节段数量减少至17节，提前工期2个月。 渝昆高铁全长约700公里，其中云南段长388.6公里，是云南省内首条时速350公里的高速铁路。全线建 成通车后，重庆到昆明的行车时间将压缩至两个半小时左右。(完) 来源：中国新闻网 编辑：郭晋嘉 广告等商务合作，请点击这里 本文为转载内容，授权事宜请联系原著作权人 中新经纬版权所有，未经书面授权，任何单位及个人不得转载、摘编或以其它方式使用。 关注中新经纬微信公众 ...

而为了确保大型预制件现场精准安装，施工人员在施工过程中采用双全站仪定位、偏差预留钢筋冷矫 正、激光水平仪辅助对位等技术手段来确保了墩柱与承台的精准对接；同时，通过水灰比和流动度试验 优化、"馒头状"法施工，解决了座浆层空鼓，为安装质量提供保障。 由中铁七局承建的侨城东路北延通道工程三标段北环立交是该工程的重要节点之一。据马力山介绍，侨 城东路北环立交共包含2座主线桥和8座匝道桥，桥梁总长2887.1米。该立交将是深圳市首个智能化建造 的装配式全互通立交桥，也是中铁七局首例装配式桥梁，全桥装配率达95%以上。 "装配式桥梁有点像是'搭乐高'，除了桥墩之外，预制完成的节段箱梁、钢箱梁、护栏挂板，都是我们 施工会用到的'积木块'。"马力山告诉记者，通过采用模块化、工厂化集中预制，项目实现了有限空间 场地内桩基与墩柱同步施工，大大加快了施工进度。其中，装配式墩柱单个安装时间就从传统现浇的至 少7天缩短至1.5天。 【深圳商报讯】(记者 肖晗 通讯员 马珂娇 张喜军)"深圳首个智能化全互通立交桥将亮相侨城东路。"近 日，在深圳侨城东路北延通道工程北环立交装配式桥梁施工观摩现场，项目工程师马力山指着刚刚完成 安装的桥墩告 ...

此外，该项目还在节段拼装箱梁箱梁预制阶段引入液压不锈钢模板系统，保障构件尺寸精确及混凝土镜 面效果。利用钢筋骨架"模具化制作"和三维激光扫描技术，确保主筋间距和预制构件拼装面符合规定的 毫米精度。同时建立信息化溯源管理系统，实现型号、质检报告、运输轨迹、安装位置等信息全流程透 明、可追溯，通过一系列质量标准化措施确保各类型"积木块"高品质投用。 据了解，深圳侨城东路北环立交是国内首例采用八边形承插式节段拼装桥墩施工的立交桥梁，也是深圳 市首个智能化建造的装配式全互通立交桥，全桥装配率达到了95%。马力山介绍，侨城东路北环立交共 包含2座主线桥和8座匝道桥，桥梁总长2887.1米。项目通过采用模块化、工厂化集中预制，实现了有限 空间场地内桩基与墩柱同步施工，大大加快了施工进度。其中，装配式墩柱单个安装时间就从传统现浇 的至少7天缩短至1.5天。 中铁七局有关负责人表示，通过"工厂化制造、装配化施工、智能化管控"的全新建造模式，侨城东路项 目实现了桥梁"积木块"高质量制作和高品质搭建的完美统一。随着施工的不断推进，"基于BIM+三维激 光扫描技术的节段梁整跨虚拟预拼装""节段梁制存运架一体化数字平台"、无人化吊具 ...

钢主梁的质量与精度，影响着桥面板安装质量及桥梁运营期的安全与耐久性。面对跨径大、吊装精 度要求高等多重挑战，参建各方严控加工、运输与架设全流程，最终实现毫米级精度对接，完成了全桥 主体结构的最后一段"拼图"。 高架桥整体装配率高达90%是312国道东延项目建设的一大亮点。施工单位现场负责人介绍，除桩 基、承台等基础外，墩柱、盖梁、箱梁等核心构件均在工厂预制完成，运输至现场进行组装。全线共使 用了464片箱梁、98片盖梁、148节墩柱，这些"积木"模块均来自场内4个预制构件生产区，推动项目整 体施工效率提升30%以上。 作为南京与镇江交界的交通要道，该项目的建设对强化宁镇两地互联互通具有重要战略意义。东延 项目建成通车后，南京仙林片区到镇江市区的通行时间将从一个半小时缩短至40分钟左右。312国道东 延通车后，将有效改善沿线居民的出行条件，进一步密切宁镇两地的产业联动与人才交流，为宁镇扬一 体化发展注入新的活力。 "对位、落梁！"近日，随着最后一跨钢主梁精准就位，312国道东延项目高架全线结构贯通，正式 转入桥面施工阶段。 312国道东延起自南京栖霞区与镇江句容市交界处，向西止于已建成的312国道、346国道南 ...

Core Viewpoint - The opening of the Huajiang Grand Canyon Bridge has transformed local transportation and tourism, becoming a new focal point for regional development and bridge-tourism integration. Group 1: Bridge Features and Impact - The Huajiang Grand Canyon Bridge spans 2890 meters, with a main span of 1420 meters and a height of 625 meters, making it the world's tallest and longest bridge in mountainous areas [1][3] - Since its opening on September 28, the bridge has become a popular tourist destination, significantly boosting the local tourism economy and surrounding attractions [1][4] Group 2: Local Economic Development - The bridge has led to increased occupancy rates in local accommodations, with over 80% occupancy reported in nearby guesthouses [2] - The bridge is seen as a "wealth bridge," facilitating economic opportunities for local residents, such as employment in tourism-related services [2][5] Group 3: Tourism Integration and Planning - A comprehensive tourism plan has been developed for the area surrounding the bridge, integrating over 50 square kilometers into a unified tourism strategy [3] - The bridge connects various tourist attractions, promoting a shift from fragmented tourism to a more holistic approach [3][4] Group 4: Regional Industry and Logistics - The bridge enhances logistics for local agricultural products, allowing for faster transportation to major markets, thus supporting the "Qian goods out of the mountains" initiative [5][8] - Local industries, including specialty products and ethnic crafts, are being promoted through improved access provided by the bridge [8] Group 5: Smart Maintenance and Technology - The bridge incorporates advanced monitoring technologies, including fiber optic sensors, to ensure its structural integrity and maintenance efficiency [9][10] - This technology allows for real-time monitoring of critical parameters, significantly reducing maintenance costs and improving safety [10]

Core Viewpoint - The opening of the Huajiang Grand Canyon Bridge has transformed transportation and tourism in the region, becoming a new focal point for bridge-tourism integration and regional development [1][4]. Group 1: Bridge Features and Impact - The Huajiang Grand Canyon Bridge spans 2890 meters, with a main span of 1420 meters and a height of 625 meters, making it the world's tallest and longest bridge in mountainous areas [1]. - Since its opening on September 28, the bridge has become a popular tourist destination, significantly boosting local attractions and accommodations [1][2]. - The bridge has facilitated a shift from fragmented tourism resources to a more integrated approach, promoting comprehensive tourism in the surrounding area [3]. Group 2: Economic and Employment Opportunities - Local businesses, such as Lin Guoquan's guesthouse, have seen occupancy rates exceed 80% due to increased tourist traffic [2]. - The bridge has created job opportunities for locals, with over 40 residents employed at the nearby Yunyu service area [6]. - The bridge supports the transportation of local agricultural products, enhancing the logistics for "Qian goods" to reach broader markets, including the Guangdong-Hong Kong-Macau Greater Bay Area [5]. Group 3: Technological Innovations in Bridge Maintenance - The bridge incorporates advanced monitoring technologies, including fiber optic sensors, to ensure the health and safety of its main cable [7][8]. - A comprehensive health monitoring system allows for real-time data transmission, significantly improving maintenance efficiency and reducing costs [8]. - The bridge's design includes multiple fire protection measures to safeguard its structural integrity, reflecting a commitment to innovative construction techniques [8].

Core Viewpoint - The company, China Communications Second Highway Engineering Bureau Co., Ltd., is a key player in bridge construction in the Yangtze River Delta, contributing to regional development through innovative and high-quality bridge projects [1][2]. Group 1: Company Overview - The company focuses on "high-tech, special, and difficult" bridge construction, aiming to enhance its brand through high-quality projects with excellent market image and customer satisfaction [2]. - It has participated in the construction of several world-leading bridges in the Jiangsu section, including the Runyang Yangtze River Highway Bridge and the Su-Tong Yangtze River Highway Bridge [2]. Group 2: Technological Innovations - The Nanjing Xinxingxu Yangtze River Bridge, with a main span of 1,760 meters, is now the largest in China and the third largest in the world, showcasing the company's innovative capabilities [3]. - The construction of the bridge's north anchor block involved a large-scale caisson structure that required precise sinking to a depth of 50 meters, equivalent to nearly 17 stories [5]. - The project team implemented innovative techniques such as the "air curtain" method to facilitate the sinking of the caisson, significantly reducing friction and accelerating the process [6][8]. Group 3: Construction Techniques - The company has successfully integrated advanced construction methods, such as the "piling and freezing method," to address challenges posed by groundwater during the construction of the south anchor block of the Runyang Yangtze River Bridge [7]. - The use of a new drainage and non-drainage sinking method at the Taizhou Bridge achieved a precision level exceeding standard requirements by 50 times [11]. Group 4: Equipment Development - The company developed a fully automated hydraulic cable hoisting machine capable of lifting loads up to 740 tons, which played a crucial role in the construction of the Runyang Yangtze River Bridge [9]. - The introduction of a central double cable surface hoisting machine at the Jiangxinzhou Yangtze River Bridge ensured high precision and efficiency in the installation of the bridge's superstructure [10]. Group 5: Quality Control - The company maintains a rigorous standard for construction precision, achieving a center plane deviation of only 9 millimeters and a tilt of 0.0007 at the Nanjing Yangtze River Bridge's south anchor block [11]. - The construction of the Jiangxinzhou Yangtze River Bridge required meticulous operations within a 70-centimeter gap, ensuring that elevation and planar coordinate errors did not exceed 2 millimeters [11].

四川通江：镇广高速东山通江河特大桥建设加速【4】 四川通江：镇广高速东山通江河特大桥建设加速 四川通江：镇广高速东山通江河特大桥建设加速【2】 四川通江：镇广高速东山通江河特大桥建设加速【3】 四川通江：镇广高速东山通江河特大桥建设加速【5】 ...

南京新生圩长江大桥，国内第一、世界第三大跨度单跨吊钢箱梁悬索桥，11月26日正式通车运 营； 沪渝蓉（北沿江）高速铁路通泰扬特大桥，全长172.9公里的世界在建最长桥梁，截至11月底，大 桥上部结构施工已完成90%； 作为连接南京、合肥两大都市圈的关键枢纽，马鞍山长江公铁大桥将让中西部地区与长三角核心区 的通行效率大幅提升，人才、技术、资本等发展要素得以更顺畅地流动。"这座桥不只是物理通道，更 是区域协同的'战略引擎'。"马鞍山市发改委相关负责人坦言，它让马鞍山从"跨江城市"向"跨江枢纽"跃 升，缩短了城市间的距离，也让区域发展更平衡。 马鞍山长江公铁大桥，世界首座双主跨超千米的三塔斜拉桥、世界最大跨度三塔斜拉桥、世界最长 联钢桁梁斜拉桥，12月3日主汊航道桥实现轨通…… 拉近了南京与扬州、镇江等城市时空距离的南京新生圩长江大桥同样实力不俗，是国内第一、世界 第三大跨度单跨吊钢箱梁悬索桥，主缆采用2100兆帕级锌铝合金高强钢丝，强度达到国内悬索桥顶尖 水平。参与该项目建设的中铁宝桥（扬州）有限公司，负责主桥钢箱梁及附属结构在内的2.8万吨钢结 构生产制造任务，该团队攻克了多项焊接"黑科技"。"为破解行业共性难 ...