重力式岸壁码头位移调查与分析

Investigation and analysis of displacement of gravity wharves

部分重力式码头位移的调查结果表明,码头位移在施工期可基本完成且达到码头高度的0.2%以上,具备码头墙后产生主动土压力的必要条件,与设计预期相符合;使用期的码头位移一般较小,地基压缩性较低时均可在25 mm以内,不影响码头正常使用。进一步的统计分析表明,岸壁码头位移无论在施工期还是使用期均与地基状况密切相关,即地基越好,码头位移越小。建造在压缩性较明显的一般黏性土地基上的重力式岸壁码头,其使用期位移量可达100 mm以上,对码头正常运行将产生不利影响,需要采取适当的措施。

The investigation results on the displacement of some gravity wharves indicate that the displacement of the wharf which is over 0.2% of its height will be completed basically during the construction period,and the active earth pressure on wharf back can be occurred certainly in conformity with the design expectation.It also indicates that the displacement of the wharf which can be used normally will be less than 25 mm during service when the foundation is less compressible.A further statistical analysis reveals that the displacement of the wharf during the construction and service period is closely related to the condition of its foundation.The better foundation,the less displacement.But if the displacement is over 100 mm during the service period when the wharf is built on the compressible clayey soil foundation,it will affect normal operation of the quay and appropriate measures shall be taken.