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目前,在沿海城市河道防汛墙改建工程中,为提高防汛标准及延长使用寿命,防汛墙大量采用高桩承台结构。根据周边环境、地质条件及使用功能不同,桩基础主要采用钢筋混凝土方桩、板桩、PHC管桩及钻孔灌注桩,另外还有少量的高压旋喷桩及拉森钢板桩等,按桩的入土方法可分为打入桩、压入桩和灌注桩等。工程中桩基础施工测量的主要任务是根据设计图纸进行现场测放桩位,为桩基础工程施工提供标志;进行桩基础施工监测;在桩基础施工完成后,为检验施工质量和为上部工程施工提供桩基础资料,需要进行桩基础竣工测量。
At present, flood control walls in the coastal city reconstruction project, in order to improve flood control standards and extend the service life, a large flood control wall cap pile structure. According to the surrounding environment, geological conditions and the use of different functions, the main pile foundation using reinforced concrete square piles, sheet piles, PHC pipe piles and bored piles, in addition to a small amount of high pressure jet grouting piles and Larsen sheet piles, piles The method of earthwork can be divided into driving pile, pressing pile and filling pile. The main task of pile foundation construction survey in the project is to measure and test pile positions on site according to the design drawings so as to provide a mark for pile foundation construction; to monitor the pile foundation construction; after the pile foundation construction is completed, in order to test the construction quality and construction for the upper part Providing pile foundation information requires the completion of pile foundation measurements.