预应力高强混凝土管桩水平荷载作用下承载特性及群桩效应分析  

ANALYSIS OF BEARING CHARACTERISTICS AND PILE GROUP EFFECT OF PHC PIPE PILE UNDER THE ACTION OF HORIZONTAL LOAD

作　　者：张鹤年[1] 隆刚 陈凯祥[3] 伍进进 

机构地区：[1]东南大学,南京210096 [2]武汉城市建设档案馆,武汉430015 [3]安徽建筑大学,合肥230601

出　　处：《工业建筑》2015年第8期110-115,共6页Industrial Construction

基　　金：江苏省前瞻性研究专项基金资助项目(BY2014120);住建部科学技术资助项目(2014-K5-031)

摘　　要：在高速公路桥梁工程中,预应力高强混凝土(PHC)管桩在水平荷载作用下的承载特性十分重要,然而对于其主要影响因素以及群桩效应的研究较少。通过对PHC管桩单桩在水平荷载作用下的承载特性的分析,对影响PHC管桩的主要影响因素进行讨论,并与方桩、圆桩的承载特性进行比较;而后研究了PHC管桩的群桩效应,并比较了不同桩型水平荷载作用下的承载特性。结果表明:PHC管桩具有较强的抗水平位移性能、较大抗弯截面模量和群桩效应系数。In highway bridge engineerings,the bearing characteristic of PHC pipe pile under the action of horizontal load is very important. However,little research was done in the main influence factors and the pile group effect. First,the bearing characteristics and the main influence factors of PHC pipe pile by horizontal load were analyzed,which were also compared with those of square pile and round pile. Then,the group piles effects of PHC pipe piles were studied and compared with the ones of different types of piles under the action of horizontal load. The results showed that the PHC pile had strong anti-horizontal displacement property,large section modulus and the effect coefficient of pile group.

关 键 词：PHC管桩 水平荷载 承载特性 P-Y曲线 群桩效应 

分 类 号：TU473.1[建筑科学—结构工程]