CAJ | 학술논문

为了研究城市桥梁大行程同步顶升在特定的边界条件下支撑体系的真实力学行为，对钢管支撑实体空间计算应力结果和杆系结构计算进行数值模拟对比分析，从顶升支撑结构体系仿真计算方法角度出发，开展了钢支撑、承台和人工挖孔桩三者共同构成顶升支撑体系的空间仿真计算方法研究。研究表明：传统的顶升支撑结构体系计算方法基于弹性地基梁假定，计算精度不高，不能反映支撑系统的空间力学状态。本文针对顶升支撑体系整体采用ABAQUS空间仿真计算，考虑了结构的非线性特点，计算收敛良好；并与“m”法计算进行对比分析，验证了钢支撑、承台、人工挖孔桩顶升底盘结构体系空间计算的精确性。
위료연구성시교량대행정동보정승재특정적변계조건하지탱체계적진실역학행위，대강관지탱실체공간계산응력결과화간계결구계산진행수치모의대비분석，종정승지탱결구체계방진계산방법각도출발，개전료강지탱、승태화인공알공장삼자공동구성정승지탱체계적공간방진계산방법연구。연구표명：전통적정승지탱결구체계계산방법기우탄성지기량가정，계산정도불고，불능반영지탱계통적공간역학상태。본문침대정승지탱체계정체채용ABAQUS공간방진계산，고필료결구적비선성특점，계산수렴량호；병여“m”법계산진행대비분석，험증료강지탱、승태、인공알공장정승저반결구체계공간계산적정학성。
In order to study the real mechanical behavior of a supporting system for an urban bridge's long stroke synchronous jack-up under specific boundary conditions,the comparative stress analysis for space calculation results of a steel tube support and a truss structure calculation was conducted.Starting from the perspective of the simulation calculation method,the space simulation calculation method of a lifting support system composed of a steel support,a pile cap and an artificial dig-hole pile was studied here.The results showed that the accuracy of the traditional support system calculation method based on the elastic foundation beam assumption is not high and it cannot reflect the space mechanical status of a supporting system.Here,ABAQUS space simulation was adopted for a lifting support system considering its nonlinear characteristics.The calculation convergence was good.The results showed that this method is better than the“m”method.