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山区高速公路桥台路基病害处治是一项涉及地质、路基、桥梁、路面、交安等多个领域的“系统工程”。以川东某高速一处桥台路基侧滑病害的抢险处治为工程实例,详细讨论了动态设计的关键流程。兼顾争取抢险时间与临时保通,首先对路基脱空段落采取“混凝土灌注密实”的临时措施;进而选用“钢管群桩+联系梁+垫墩锚索”的超静定空间结构作为路基侧移病害的主体加固方案;将右幅南岸路桥过渡段开挖至基层一定深度,以处治22号桥台裂纹病害,并为路基路面的恢复提供空间;经方案比选,确定以“既有路中墙+钢管群桩+联系梁”作为左幅病害段落的永久处治方案。所得成果可为类似病害治理提供类比设计的技术资料与参考。
Mountain Highway Bridge abutment disease treatment is a disease involving the geological, roadbed, bridge, pavement, pay security and other areas “system engineering ”. Taking a rescue project of a side slippery disease of a bridge abutment at a high speed in eastern Sichuan as an example, the key processes of dynamic design are discussed in detail. Taking into account the time for emergency rescue and temporary Paul Tong, the first section of the subgrade to take “concrete pouring solid ” temporary measures; and then use “pipe group pile + contact beam + pier anchor ” statically indeterminate spatial structure As the subgrade reinforcement of the main side of the disease program; the right side of the South Bank Road and Bridge transitional section excavation to a certain depth to the grassroots level to handle Bridge Cracking Disease 22, and to provide space for the restoration of subgrade and pavement; “Existing road wall + steel pipe pile group + contact beam” as a permanent treatment of left disease paragraph paragraph. The results obtained may provide analogous technical information and references for similar disease control.