预应力混凝土管桩实测与数值模拟优化对比分析  

The comparative analysis of monitoring value and numerical simulation of prestressed concrete pile

作　　者：何夕平[1] 常东明[1] 杨建斌 童天培[3] 

机构地区：[1]安徽建筑大学土木工程学院,安徽合肥230022 [2]中国十七冶集团有限公司,安徽马鞍山243000 [3]中建四局第六建筑工程有限公司,安徽合肥230001

出　　处：《四川建筑科学研究》2014年第6期94-98,共5页Sichuan Building Science

基　　金：国家科技支撑计划课题资助项目(2011BAJ03B04);安徽省教育厅高等教育振兴计划课题资助(2013zdjy121)

摘　　要：预应力混凝土管桩由于具有施工速度快、施工安全等优势已在软弱土地区被广泛使用。本文结合具体工程,针对地基中桩土相互作用的原理,通过简化桩土单元体竖向相对位移分布模式,引入库仑-摩尔模型,利用FLAC-3D软件对预应力混凝土管桩在竖向荷载下的沉降变化进行模拟,将模拟计算结果与现场静载试验结果进行对比,并模拟不同桩长、不同桩径对桩基沉降的影响,得出桩的最优设计。本文分析方法和结论可为类似工程设计和施工提供依据,便于工程应用。Due to the fast construction speed,construction safety and so on,prestressed concrete pile have been widely used in soft soil region. Combined with the engineering practice,this paper focused on the principle of pile-soil interaction in foundation,through simplify the vertical relative displacement distribution pattern of pile-soil element. Introduced mohr-coulomb model,used FLAC-3D sofeware to simulated settlement changes of prestressed concrete pile under vertical load,compared the result of numerical simulation with the result of static loading test,and then simulated the prestressed concrete pile which have different length or different diameter how to affected the settlement of pile,finally get the optimum design of prestressed concrete pile. In this paper analysis method and conclusion can provide reference for similar engineering design and construction,and convenient for engineering applications.

关 键 词：预应力混凝土管桩 静载试验 数值模拟 沉降 

分 类 号：TU47[建筑科学—结构工程]