太仓万达广场桩基设计控制
- 摘 要
-
（苏州设计研究院股份有限公司， 苏州 215021）［摘要］太仓万达广场场地属于长江三角洲冲积平原区，水系发育，场地上部存在较厚的软土。桩基设计考虑施工因素，为保证桩基质量，采用钻孔灌注桩。主要就如何控制钻孔灌注桩的造价进行了不同桩径、桩端是否后注浆、抗拔桩裂缝控制不同取值、抗拔桩是否按实际反力分级配筋、抗拔桩是否分段配筋等对比分析，提出了尽量采用较小直径的桩、抗压桩采用桩端后注浆、位于无侵蚀性稳定水位以下的抗拔桩裂缝控制取0.3mm、抗拔桩根据实际反力采用分级配筋、抗拔桩采用分段配筋等多种控制方法，可供同类型桩基设计参考。［关键词］钻孔灌注桩; 桩端后注浆; 抗拔桩分级配筋; 抗拔桩分段配筋中图分类号：TU473.1+2 文献标识码：A 文章编号：1002-848X(2013)20-0115-03Design on pile foundations of Wanda Plaza in TaicangSong Hongyu, Zhang Min, Shen Yinliang(Suzhou Institute of Architectural Design Co., Ltd., Suzhou 215021, China)Abstract: The site of Wanda Plaza in Taicang, which belongs to the alluvial plain of the Yangtze river delta region, has development drainage and thick soft oil in upper parts. Drilled grouting pile was adopted considering construction factors and pile foundation quality. To control the cost, comparative analysis was carried out including different pile diameter, post grouting in pile bottom, different crack control value of uplift pile, hierarchical reinforcement of uplift pile according to the actual force, and segment reinforcement of uplift pile. A variety of design methods were introduced, such as adopting smaller diameter piles as well as post grouting in pile bottom. The control crack value of uplift pile can be 0.3mm below the steady water level with little erosion. Hierarchical reinforcement according to the actual force and segment reinforcement were adopted in uplift pile. Above methods provide reference for design of similar pile foundations.Keywords: drilled grouting pile; post grouting in pile bottom; uplift pile with hierarchical reinforcement; uplift pile with segment reinforcement作者简介：宋鸿誉，研究员级高级工程师，一级注册结构工程师，结构副总工程师，Email: hongyu.song@siad-c.com。参考文献［1］JGJ 94—2008 建筑桩基技术规范［S］.北京：中国建筑工业出版社，2008.
