带接头PRC管桩抗剪性能试验研究  

EXPERIMENTAL STUDY ON SHEAR PERFORMANCE OF PRC PIPE PILES WITH JOINTS

作　　者：常欢欢 CHANG Huan-huan(Henan Construction Group Co.,Ltd.,450000,Zhengzhou,China)

机构地区：[1]河南省建设集团有限公司,郑州450000

出　　处：《建筑技术》2024年第20期2556-2560,共5页Architecture Technology

基　　金：河南省住房和城乡建设科学技术计划项目(HNJS-2022-K17)。

摘　　要：为研究接桩方式对混合配筋混凝土管桩(PRC管桩)抗剪性能的影响,考虑两种接桩方式(抱箍式和卡箍式)及钢套箍厚度为设计参数,对设计制作的3个带接头的PRC管桩和1个不带接头的PRC管桩进行四点弯曲试验。现行图集中抗剪承载力计算公式可用于PRC管桩抱箍式接桩验算,而卡箍式接桩方式易在端板与混凝土交接处形成应力集中,导致其受力性能变差。因此,接桩时建议采用抱箍式接桩方式,并避免采用卡箍式。To study the influence of pile connection methods on the shear performance of mixed reinforced concrete pipe piles(PRC pipe piles),two types of pile connection methods(hoop and clamp)and steel sleeve thickness were considered as design parameters.Four point bending tests were conducted on three PRC pipe piles with joints and one PRC pipe pile without joints designed and manufactured.The current formula for calculating shear bearing capacity in the atlas can be used for the verification of PRC pipe pile clamp type connection,but the clamp type connection method is prone to stress concentration at the junction of the end plate and concrete,resulting in a deterioration of its stress performance.Therefore,it is recommended to use the clamp type pile connection method and avoid using the clamp type when connecting piles.

关 键 词：PRC管桩 接桩 抱箍式 抗剪性能 试验研究 

分 类 号：TU473.1[建筑科学—结构工程]