缠丝过程中PCCP管芯变形的试验研究与数值模拟  

Experimental study and numerical simulation on pipe core deformation of PCCP during wire-wrapped process

作　　者：窦铁生[1] 董晓农 赵磊 程冰清 董鹏 李炎隆[4] 宁靖华 黎康平 DOU Tiesheng;DONG Xiaonong;ZHAO Lei;CHENG Bingqing;DONG Peng;LI Yanlong;NING Jinghua;LI Kangping(State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin,China Institute 4of Water Resources and Hydropower Research,Beijing 100038,China;Shanxi Xilongchi Pumped Storage Power Station Co.,Ltd.,Yizhou 030500,China;Hanjiang-to-Weihe River Valley Water Diversion Project Construction Co.,Ltd.,Xi'an 710010,China;State Key Laboratory of Eco-hydraulics in Northwest Arid Region,Xi'an University of Technology,Xi'an 710048,China;Powerchina Shandong Pipeline Engineering Corporation Limited,Jinan 250117,China)

机构地区：[1]流域水循环模拟与调控国家重点实验室,中国水利水电科学研究院,北京100038 [2]山西西龙池抽水蓄能电站有限责任公司,山西忻州030500 [3]陕西省引汉济渭工程建设有限公司,陕西西安710010 [4]西安理工大学西北旱区生态水利国家重点实验室,陕西西安710048 [5]中国电建集团山东电力管道工程有限公司,山东济南250117

出　　处：《混凝土与水泥制品》2025年第2期47-52,共6页China Concrete and Cement Products

基　　金：水利部重大科技项目(SKS-2022111);陕西省自然科学基础研究计划——引汉济渭联合基金项目(2019JLZ-14)。

摘　　要：预应力钢筒混凝土管(PCCP)在管芯缠丝时,管芯内表面有时会出现环向裂缝。通过在PCCP管芯生产过程中植入光纤光栅传感器,测量了管芯缠丝过程中钢筒的环向应变、管芯内表面的环向和纵向应变,并进行了有限元数值模拟,揭示了管芯缠丝变形的普遍规律。基于此,提出了降低管芯纵向应变峰值的改进方案。研究成果可为PCCP设计和缠丝过程改进提供参考。During the wire-wrapped process of prestressed concrete cylinder pipe(PCCP),circumferential cracks sometimes appear on the inner surface of the pipe core.By implanting fiber optic grating sensors in the pipe core during the production process of PCCP,the circumferential strain of the steel cylinder,the circumferential and longitudinal strains of the inner surface of the pipe core during the wire-wrapped process of pipe core were measured,and the finite element numerical simulations were conducted to reveal the general laws of wire-wrapped deformation of pipe core.Based on this,an improved scheme was proposed to reduce the peak longitudinal strain of the pipe core.The research results can provide a reference for the design and improvement of the wire-wrapped process in PCCP.

关 键 词：预应力钢筒混凝土管(PCCP) 管芯缠丝 环向变形 纵向变形 原型试验 数值模拟 

分 类 号：TU528.7[建筑科学—建筑技术科学]