高质量发展 | 蔡甸汉江公路大桥箱梁内——“爬山虎”将施工材料送上80级阶梯
<section style="font-size: 17px; letter-spacing: 1px; line-height: 2; box-sizing: border-box; text-align: justify;"><section style="box-sizing: border-box;" powered-by="xiumi.us"><section style="font-size: 17px; letter-spacing: 1px; line-height: 2; box-sizing: border-box; text-align: justify;"><p style="white-space: normal; margin-top: 0px; margin-bottom: 0px; padding: 0px; box-sizing: border-box;" powered-by="xiumi.us">时下正值高温季节，桥面被晒得滚烫。连日来，封闭的特大桥箱梁里，温度达50℃以上，一群建设者挥汗如雨，为桥梁维修加固，冲刺8月底完工。</p><p style="white-space: normal; margin-top: 0px; margin-bottom: 0px; padding: 0px; box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"/></p><section style="text-align: center; margin-top: 10px; margin-bottom: 10px; position: static; box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%; vertical-align: middle; display: inline-block; line-height: 0; box-sizing: border-box;"></section></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal; margin-top: 0px; margin-bottom: 0px; padding: 0px; box-sizing: border-box;"><br style="box-sizing: border-box;"/></p><p style="white-space: normal; margin-top: 0px; margin-bottom: 0px; padding: 0px; box-sizing: border-box;">这里是G4201武汉绕城高速西段蔡甸汉江公路大桥，其左幅主跨钢筋砼箱梁内，正在加固施工。箱梁入口距地面约25米，往下看是滔滔江水，攀爬80级阶梯，钻过狭小窗洞，便进入狭小、封闭的箱体，里面30多人正进行病害修补、粘贴钢板、切割材料。</p><p style="white-space: normal; margin-top: 0px; margin-bottom: 0px; padding: 0px; box-sizing: border-box;"><br style="box-sizing: border-box;"/></p><p style="white-space: normal; margin-top: 0px; margin-bottom: 0px; padding: 0px; box-sizing: border-box;">箱梁几乎封闭，作业空间小，室内温度高，施工材料靠人工搬运难度大，特别是受多道桥梁横隔板的阻挡，材料运输极不方便。</p><p style="white-space: normal; margin-top: 0px; margin-bottom: 0px; padding: 0px; box-sizing: border-box;"><br style="box-sizing: border-box;"/></p><p style="white-space: normal; margin-top: 0px; margin-bottom: 0px; padding: 0px; box-sizing: border-box;">湖北交投京珠运营公司养护作业人员发明“爬山虎”，轻松运输施工材料，减少高温、高强度下人工搬运的安全风险，提高工作效率，让桥梁加固工程提速。</p><p style="white-space: normal; margin-top: 0px; margin-bottom: 0px; padding: 0px; box-sizing: border-box;"><br style="box-sizing: border-box;"/></p><p style="white-space: normal; margin-top: 0px; margin-bottom: 0px; padding: 0px; box-sizing: border-box;">“爬山虎”又名小型轨道运输车，在大桥箱梁里架设一条长长的简易铁轨，运输车沿着铁轨平稳安全通行，担负起外运箱梁内铲除的灰渣及输送维修加固所需材料的任务。</p><p style="white-space: normal; margin-top: 0px; margin-bottom: 0px; padding: 0px; box-sizing: border-box;"><br style="box-sizing: border-box;"/></p><p style="white-space: normal; margin-top: 0px; margin-bottom: 0px; padding: 0px; box-sizing: border-box;">该桥梁箱体总长度400米，支点梁高9.35米，跨中梁高3.4米，左幅顶宽13米，右幅顶宽20.5米。为了早日完工，他们钻过狭小窗洞，在钢箱梁里,有的拿着测缝仪细心地搜寻病害，“一根头发丝也不放过”，还有多组作业小分队在现场施工，全面巡检，一天下来，一名养护技术人员走上两三万步是常有的事。</p><p style="white-space: normal; margin-top: 0px; margin-bottom: 0px; padding: 0px; box-sizing: border-box;"><br style="box-sizing: border-box;"/></p><p style="white-space: normal; margin-top: 0px; margin-bottom: 0px; padding: 0px; box-sizing: border-box;">钢夹板加固桥梁端需要钻孔，设高强螺栓，桥梁内钢筋密布，为不伤及原有钢筋，采用先进探测仪准确探查钢筋分布状况。“钻孔要避开钢筋”“掌握情况要全面准确，丝毫不能有偏差”……41岁的任伟小心翼翼地拿着雷达仪探测桥梁内部钢筋分布情况。大家反复讨论高温条件下施工安全和质量保障的主要措施, 确保安全保质保量圆满完成工程任务。</p><p style="white-space: normal; margin-top: 0px; margin-bottom: 0px; padding: 0px; box-sizing: border-box;"><br style="box-sizing: border-box;"/></p><p style="white-space: normal; margin-top: 0px; margin-bottom: 0px; padding: 0px; box-sizing: border-box;">为改善箱梁内作业环境，京珠运营公司采用增加换气排风设施，除尘雾状喷水，配足饮用水、清凉油、西瓜等防暑降温食物与药品，为施工人员“送清凉”，与“爬山虎”一道共同迎战高温“大烤”。</p><p style="white-space: normal; margin-top: 0px; margin-bottom: 0px; padding: 0px; box-sizing: border-box;"><br/></p></section></section></section></section><p></p><section style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; box-sizing: border-box; color: rgb(34, 34, 34); font-family: system-ui, -apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif; letter-spacing: 0.544px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255); overflow-wrap: break-word !important;"><section powered-by="xiumi.us" style="margin: 0.5em 0px; padding: 0px; outline: 0px; max-width: 100%; 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