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解惑“棉签play文”-环球时报

“深度体检”达标棉签play文 黄茅海跨海通道完成荷载试验

来源: 中国基金报
2024-11-16 10:25:03

最佳回答

“棉签play文”“深度体检”达标棉签play文 黄茅海跨海通道完成荷载试验

  中新棉签play文网广州11月14日电 (蔡敏婕棉签play文 张鸣子)广东交通集团14日发布消息,黄茅海跨海通道项目黄茅海大桥荷载试验完成,54辆载重共1890吨的汽车分四次加载,最终稳稳停在桥面上。项目另一座主桥高栏港大桥已于11月5日完成荷载试验,至此,项目桥梁工程通过“深度体检”。

  荷载试验即静动载试验,分为初始状况调查、动载试验、静载试验,旨在评价桥梁施工质量是否达到设计要求、检验桥梁结构的实际工作性能。

  “项目的两座主桥均采用分体式钢箱梁设计,钢结构对温度要求高,我们选定温度相对稳定的夜间七点半至凌晨三点进行测试、采样,这样得出的数据更加精准。”黄茅海跨海通道管理中心项目负责人朱超介绍道。

黄茅海跨海通道静载试验进行中。郝笑天 摄

  试验开始前,工作人员将170余个传感器布置在塔顶、塔底、桥面、桥墩等桥梁关键截面测点上,用于收集各种关键数据。“我们的动载试验模拟了三种行车情况,第一种是无障碍行车试验,两台重约35吨的载重汽车以不同车速在桥面行驶;第二种是有障碍行车试验,在桥面设置高7厘米的弓形板,两台重约35吨的载重汽车以不同车速越过障碍行驶;第三种是脉动试验,是在桥面无任何车辆的情况下,通过布置在桥梁上的振动传感器拾取微幅振动,经低频放大器放大信号后,用动态信号采集系统进行采样、分析。静载试验则是按照工况,在桥面指定位置分批停放载重汽车,并通过检测仪器记录参数。”中铁宝桥黄茅海跨海通道G3合同段项目经理王晓辉说道。

  经过测量,高栏港大桥、黄茅海大桥荷载的试验数据均在设计范围内,结构实际工作性能与设计期望值相符,试验所得结果将为工程交通验收提供依据,并作为今后运营期工作状况监测的重要参考资料。

  截至目前,黄茅海跨海通道建设进展顺利,五座主棉签play文塔已封顶,两座隧道已贯通,钢桥面铺装及路面铺装全部完成,桥梁工程荷载试验完成,正进行机电交安、全线景观绿化提升等附属工程施工。项目已全面进入通车冲刺期,朝着年底建成通车的目标推进。(完)

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