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                                                                                                                                                                          澳门赌场注册:浙江龙丽温高速文泰段南浦溪特大桥顺利合龙

                                                                                                                                                                          2019-07-05 17:43 五台县资讯站

                                                                                                                                                                              大桥合龙(央广网发 通讯员供图)

                                                                                                                                                                              央广网温州7月5日消息(记者张国亮 通讯员罗潇 蒋继斌)7月4日,随着桥拱最后一颗高强螺栓拧紧,长达25米的钢拱肋合龙段顺利完成对接。这标志着浙江省龙丽温高速公路文泰段控制性工程南浦溪特大桥主跨258m钢拱肋历时17个月终于成功实现了合龙。

                                                                                                                                                                              南浦溪特大桥由浙江交通集团投资建设,中国中铁二局承建,大桥于2018年1月18日开工建设。该工程位于浙江省泰顺县南浦溪镇岭头村,桥梁按双向4车道、时速80公里的高速公路设计,全长444.96米,主桥设计为258米上承式钢管混凝土桁架拱,划分为13个拱肋吊装节段、重约2600吨,采用两组额定吊重106t的临时货运架空索道进行吊装施工。大桥桥面至常水位相对高差139米,桥位两侧地势陡峭,横跨601县道与珊溪水库,来往车流量大,施工安全风险高,环保标准要求严。与此同时,南浦溪特大桥所在地受台风影响大,大桥跨越位置恰好位于风力紊乱的沟谷瓶颈区,且桥位两侧地势陡峭限制了设备布置与工序周转,使现场作业及高空吊装施工难度倍增。

                                                                                                                                                                              为确保工程安全有序进行,在浙江交通集团龙丽温文泰分指的指导下,中铁二局文泰高速公路三标项目管理团队利用BIM技术(一种数字化虚拟建筑工程信息模型)强化先期管理,辅助架空索道设计和钢结构单元杆件分解制造工作,提高了组织效率和施工质量;全面引入PLC智能集成控制系统(一种专门为在工业环境下应用而设计的数字运算操作的电子装置),实现了临时架空货运索道系统稳定、安全、可靠运转;利用云端平台建立远程可视化施工视频监控系统(一种集视频数据采集、传输网络、监控管理平台组成的视频监控系统),实现了对施工现场重大危险源和安全生产措施落实的实时监测和指导;多方协调沟通,通过临时封道措施,消除了紧邻601县道上方拱座开挖施工对社会车辆行人的安全威胁;采用地基注浆措施,对破碎拱座基底进行加固处理,保证了拱座基础的稳定;选用水磨钻工艺进行桩基施工,解决了高边坡附近桩基易坍塌难题;采用液压爬模工艺进行空心薄壁高墩施工,提高了施工效率,降低了安全风险;优化方案,将盖梁钢筋整体绑扎,一次吊装就位,解决了高空作业空间狭窄,安全风险大、施工效率低的问题。采取多种措施,确保了施工过程的安全、质量,为大桥主跨钢拱肋顺利合龙奠定了坚实的基础。

                                                                                                                                                                              据悉,龙丽温高速公路文泰段全长57.445公里,总投资109亿元,工程将于2020年底建成通车。该公路是浙江省“两纵两横十八连三绕三通道”高速公路网中龙丽温高速公路的组成路段;是跨浙闽省际和温州市、丽水市的重要通道;同时也是浙江省圆满解决陆地县“县县通高速”,文成、泰顺进入“温州都市区1小时交通圈”的关键工程,起着连接长江经济带和福建海峡西岸经济区、补齐温州交通短板的重要作用。