土工基础

›› 2017, Vol. 31 ›› Issue (4): 397-401.

• 工程实录 • 上一篇    下一篇

某地下车库抗拔基础的选型与设计

吕恒柱，黎德琳   

  1. （南京金宸建筑设计有限公司，南京 210019）
  • 收稿日期:2016-09-20 修回日期:2016-10-03 出版日期:2017-08-20 发布日期:2017-08-22
  • 作者简介:吕恒柱（1980-），男，硕士，高级工程师，一级注册结构工程师，研究方向为建筑结构设计。

Selection and Design of Uplift Foundations foran Underground Parking Garage

LV Hengzhu, LI Delin   

  1. (Nanjing Kingdom Architecture Design Co. Ltd., Nanjing 210019)
  • Received:2016-09-20 Revised:2016-10-03 Online:2017-08-20 Published:2017-08-22

摘要： 在某住宅小区的地下车库基础抗拔设计时，充分考虑场地土层分布性状与物理力学特性及经济优势等因素，对多种基础方案的技术可行性和经济性进行比较，选择最优方案，既能满足工程承载力要求，又能较大幅度地减少工程造价，具有较高的经济效益。同时，由两种试桩方式的实测结果可知，在自然地面试桩与在基坑开挖条件下试桩，两者承载力结果存在较大幅度的差异，在设计估算桩基承载力，确定试桩取值时，必须引起足够重视。

关键词: 预应力管桩, 钻孔灌注桩, MC劲性复合桩, 经济比较, 设计思路

Abstract: In the selection and design of the uplift foundation for an underground parking garage of a residential community, all feasible foundations were compared with both constructability and cost based on the site specific subsurface conditions. The optimized foundation type that can meet the bearing capacity requirements and also cost effective. The static loading tests were performed on two different pile types: prefabricated, prestressed reinforced concrete pipe piles and bored and castinpaced reinforced concrete piles. The testing under the natural ground and excavated conditions indicate that the uplift capacities are significantly different. Therefore, during the design stage, the pile testing conditions should be specified.

Key words: Pre-fabricated Pre-stressed Reinforced Concrete Pipe Piles, Bored and Cast-In-Place Reinforced Concrete Piles, MC Rigid Composite Columns, Cost Comparisons, Design Approaches