摘要
探讨了在吉林地区高层建筑中有关桩基规范执行及设计施工过程中常见的问题。通过对不同直径的桩端进入持力层深度的对比 ,明确 2d与 4d的对比要求 ,即持力层厚度的保证比进入持力层深度更重要。针对通长配筋“一通到底”的设计给施工带来的不便及浪费提出了新的建议。通过实践给出“α”角的建议值 ,既能减小扩大桩头斜面上受到卸荷后侧土压力 ,又可减少施工时的坍方。最后对降水及护壁提出了结合实际地质情况的 4种方法。
Some common problems on the design and construction of high-floor building in the area of Jilin province in the course of the implementation of specification for excavation hole pile is discussed in this paper By comparing the different depths of pile ends with different diameters through supportive layer, contrasting requirement of'2d and 4d' was determined, i.e. the guarantee of the thickness of supportive layer is more important than the depth through supportive layer. Meanwhile, new ideas are put forward on how to solve the problems of inconvenience and waste caused by adopting the designing method of all-long distribution of metal bars .The recommended value of angle α which was gotten from the practice is given, decreasing not only post-unloading lateral pressure on the slope of extended pile head but also the possibility of collapse in construction combined with practical geological conditions, four methods are presented for water depression and wall-protection.
出处
《长春科技大学学报》
CSCD
北大核心
2001年第4期372-375,共4页
Journal of Changchun University of Science and Technology
关键词
通长配筋
降水
护壁
挖孔桩
吉林地区
持力层
配筋率
common fitting of steel bars
depression of water and protecting wall
excavation hole pile
