随着建筑用地日趋紧张,高层建筑越来越多,桩基工程体量呈逐年扩大趋势,近年来,多个案例表明,桩基工程一旦出现质量问题,其事后处理代价非常巨大.为找出当前制约桩基工程质量发展的瓶颈,查找桩基工程质量控制的短板,进一步加强桩基工程质量管控.文章依据我国建筑工程桩基工程施工的具体情况,分析了建筑工程桩基工程常见的质量问题及原因,明确了建筑工程桩基工程的施工技术要点,制定了建筑工程桩基工程质量控制及管理措施,旨在为相关的研究工作提供一定的理论参考.

大型国营企业工矿棚户区改造工程一般为关乎民生的重要工程,而工程场地又位于易发生岩溶塌陷、崩塌地质灾害的岩溶区,显然成为建设地基勘察工作的难题.应用地球物理勘探手段进行岩溶区工程勘探评估工作已是常规的勘察方法.然而,由于工矿棚户区的特殊环境(无规律高密度住房、全铺水泥地坪)及强干扰(地电、管线等),无疑增大了地球物理勘探工作的难度.本文针对上述情况下怎样开展地球物理勘探工作进行了探讨,并列举一成功实例加以说明.

Dynamic compaction method had advantages of simple construction,obvious effect and wide adaptability,which become one of the main method of soft foundation reinforcement,widely used in the construction of infrastructure in the coastal area. To lucubrate the foundation reinforcement mechanism and identify relevant laws,used the finite difference software FLAC3D,replaced the rammer with triangle wave and sine wave generated when in contact with the foundation of stress wave,and the two kinds of waveform simulation studies of energy transfer. Studies showed that the triangular wave was appropriate in the consolidation of the surface hard soil,sine wave was appropriate in the consolidation of the surface layer soft soil.