未经夯实堆石结构蠕变沉降估算

在以往的水运工程设计中、仅考虑软土地基的沉降和蠕变,忽略堆石体自身的蠕变沉降。引堤、防波堤、岸壁式码头后方回填等堆石体结构不能有效夯实且结构较厚时,其长期蠕变沉降可能影响使用功能。结合巴基斯坦某引堤、防波堤工程,应用反馈分析法及室内试验研究法,对堆石体蠕变量进行计算,并结合沉降观测数据与计算结果进行对比分析。结果表明,反馈分析法对于水运工程堆石体蠕变沉降计算的适用性较强,与实际观测数据吻合较好,可为类似工程提供参考。

Estimation of creep settlement for uncompacted rockfill structure

In the design of previous water transport projects,the settlement and creep of the soft ground are considered,and the creep settlement of the rockfill itself is ignored.When the rockfill structures such as breakwaters,causeways,and backfills at the back of quayside piers cannot be effectively compacted and the rockfill structure is thick,its long-term creep settlement may affect the function of the structure.Based on a dike and breakwater project in Pakistan,we apply the feedback analysis method and laboratory test method to calculate the creep variable of rockfill,and compare and analyze the observation data of settlement and calculation results.The results show that the feedback analysis method has strong applicability to the calculation of creep settlement of rockfill in water transportation projects,and it is in good agreement with the actual observations.It can provide references for similar projects.