撑杆-拉杆模型在厚桩承台中的应用
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（浙江绿城东方建筑设计有限公司， 杭州 310012）
［摘要］对国外规范ACI 318-11，AASHTO LRFD 2012和FIP 1999中关于撑杆-拉杆模型的规定进行了比较，吸收了国外规范的合理建议，推荐了一个更为合理的撑杆-拉杆模型。收集了165个深梁和121个四桩承台试验数据，对所有试验数据均按不同规范的建议方法、推荐的模型方法进行试验承载力和理论承载力的比较。比较表明，推荐的撑杆-拉杆模型方法的计算结果具有更为合适的安全储备和较小的变异系数。通过两个设计实例，验证了推荐的撑杆拉杆模型方法是简单可操作的，且结果是合理的。［关键词］撑杆-拉杆模型; 厚桩承台; 设计实例中图分类号：TU473 文献标识码：A 文章编号：1002-848X(2015)14-0092-07
Application of strut-and-tie model in design of thick pile capWang Licai, Hu Linghua（Zhejiang Greentown Oriental Architecture Design Co., Ltd., Hangzhou 310012, China）Abstract: The specifications about strut-and-tie model in codes of ACI 318-11, AASHTO LRFD 2012 and FIP 1999 were compared, and a more reasonable strut-and-tie model was recommended with adoptions of some reasonable suggestions of foreign codes. Test data of 165 deep beams and 121 four-pile caps were collected. Experimental bearing capacities were compared to the theoretical bearing capacities according to the suggested methods of different codes and proposed model method. The comparison shows that the result caculated by the proposed strut-and-tie model method has more appropriate safety conservation and smaller variation coefficient. Two design examples were applied to show that the proposed strut-and-tie model method is easy to operable and the result is reasonable.Keywords: strut-and-tie model; thick pile cap; design example
作者简介：王立才，硕士，一级注册结构工程师，Email：502666673@qq.com。
