【摘要】 根据某一沉管隧道长期运营中监测到的沉降 ,对一直被工程技术人员忽视的沉降问题的机理进行了分析 .指出河道的淤积、潮汐的往复荷载和超载情况等都可以引起沉管隧道的沉降 ,提出了定期清淤、管底注浆和桩基加固的沉降控制措施和加固后管体的计算方法 .并针对一个实际工程 ,对加固计算中地基承载力进行了分析 ,提出桩基加固方案 ,通过加固后管体的结构计算 ,分析了管体本身的内力和加固情况 .更多还原

【Abstract】 According to the results of settlement monitoring during the long-term operation of immersed tunnels, this paper analyzes the mechanics of settlement of immersed tunnels that are always neglected by engineers Silting of strand, reciprocal load of tide and overload can create settlement of immersed tunnels The paper provides measures to settlement controlling by periodic desilting, injection to tunnel base and reinforcement by pile, provides calculational methods of the tunnel body after reforcement, and provides case of pile reforcement by the analysis of ground bearing capacity At last, inner force and reforcement state of tunnel body by calculation about an actual project are obtained.更多还原