JCCP三点法外压荷载试验与模拟研究  

Simulation and analysis of JCCP under three-edge bearing test

作　　者：王法武[1] 赵利 WANG Fawu;ZHAO Li(Department of Civil and Airport Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 211106,China;Shandong Longquan Pipeline Co.,Ltd.,Zibo 255200,China)

机构地区：[1]南京航空航天大学土木与机场工程系,江苏南京211106 [2]山东龙泉管业股份有限公司,山东淄博255200

出　　处：《混凝土与水泥制品》2024年第9期48-51,57,共5页China Concrete and Cement Products

基　　金：国家重点研发计划重点专项项目(2020YFC1511900)。

摘　　要：为验证顶进施工法用钢筒混凝土顶管(JCCP)的承载能力,对JCCP进行了三点法外压荷载试验,并采用ABAQUS有限元软件对试验过程进行了模拟,研究了裂缝产生、扩展过程,并对其影响因素进行了分析。结果表明:底部支撑梁的圆弧转角及其与管体的接触特性对JCCP裂缝的发展和承载能力有显著的影响,有限元模拟时应考虑这些因素。In order to verify the bearing capacity of jacking cylinder concrete pipe(JCCP)using the jacking construction method,the three-edge bearing test was conducted on JCCP,and the test process was simulated using ABAQUS finite element software.The crack generation and propagation process were obtained,and the influencing factors were analyzed.The results show that the arc angle of the bottom support beam and its contact characteristics with the pipe body have a significant impact on the development of cracks and the bearing capacity of JCCP,and these factors need to be considered in the finite element simulation process.

关 键 词：顶进施工法用钢筒混凝土顶管 塑性损伤 裂缝 有限元模拟 承载力 

分 类 号：TU528.7[建筑科学—建筑技术科学]