一、关于混凝土预制桩的截桩处理 基础混凝土预制桩打入基底后,要对桩头混凝土和主筋进行处理。在现场检查中,发现正在施工工程或多或少在处理桩头混凝土和主筋都存在问题。 国家标准桩基础设计规范中第8.6.1条第五条规定:“桩的主筋应按计算确定,计算时,应考虑作用在桩顶的水平力和力距……”第六条强调:“桩顶嵌入承台内长度不小于50mm,当桩主要承受水平力时,不宜小于100mm,主筋伸入承台内的锚固长度不宜小于30倍钢筋直径”。 I. About the cut pile treatment of the concrete precast pile After the foundation concrete precast pile is driven into the ground, the pile head concrete and the main tendon shall be treated. During the on-site inspection, it was found that the construction works are more or less at the disposal of the pile header concrete and the main reinforcement. According to Article 5 of Article 8.6.1 of the National Standard Code for Designing Pile Foundations, “The main ribs of the pile shall be determined by calculation. When calculating, the horizontal force and force acting on the top of the pile shall be taken into account.” Article 6 emphasizes: “ The length of the pile top embedded in the platform shall not be less than 50mm. When the pile mainly bears the horizontal force, it shall not be less than 100mm. The anchorage length of the main reinforcement extending into the platform shall not be less than 30 times the rebar diameter.”