基桩水平承载特性研究方法比较分析  

Comparative analysis on research methods of horizontal load-bearing characteristics of piles

作　　者：李海江[1] 童小东[1] 

机构地区：[1]东南大学混凝土及预应力混凝土结构教育部重点实验室,南京210096

出　　处：《建筑结构》2011年第10期92-94,共3页Building Structure

基　　金：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)

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。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.

关 键 词：M法 NL法 水平位移 弯矩 

分 类 号：TU473.1[建筑科学—结构工程]