［摘要］结合某工程大直径混凝土桩水平静载试验数据资料，用m法计算了水平承载桩的桩身水平位移和弯矩；根据相似原理用NL法计算了桩的水平承载特性（泥面处的水平位移、桩身最大弯矩等）。计算值与实测值的对比表明，两种算法对于桩身最大弯矩的计算都具有较高的可靠性，m法在大位移（位移值超过15.48mm）情况下的位移计算值与实测值相比会有较大误差，而NL法不受位移条件的限制。
［关键词］m法；NL法；水平位移；弯矩
中图分类号：TU473.1文献标识码：A文章编号：1002-848X(2011)10-0092-03
Comparative analysis on research methods of horizontal load-bearing characteristics of piles
Li Haijiang, Tong Xiaodong(Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education,Southeast University, Nanjing 210096, China)
Abstract:Combined with in-situ horizontal loading test data of large-scale concrete piles, the horizontal displacement and bending moment of laterally loaded piles were calculated by m method, and the horizontal load-bearing characteristics were calculated by NL method according to the similarity theory. The comparison of calculating and measuring value shows that both  methods have high reliability on the Mmax. In comparison with the measuring displacement, the m method may have large error at the calculating values in case of large displacement, while the NL method is not limited by displacement conditions.
Keywords:m method; NL method; horizontal displacement; bending moment
*国家自然科学基金资助（51078082），江苏省自然科学基金资助项目（BK2008314）。
作者简介：李海江，硕士研究生，Email:lihaijiang1984@163.com。
参考文献
［1］韩理安.水平承载桩的计算［M］.长沙：中南大学出版社，2004.
［2］劳伟康，周治国，周立运.水平承载桩几种计算方法的比较分析［J］.广州建筑，2007，35（2）：24-26.
［3］JTJ254—98港口工程桩基规范局部修订(桩的水平承载力设计)［S］.北京：人民交通出版社，2000.
［4］吴锋，时蓓玲.基于NL法的水平受荷桩非线性有限元分析［J］.水运工程，2007，35（12）：9-12.