期刊论文

Mechanical properties of single-cabin rectangular vertical prefabricated pipe gallery

中文

应用力学学报

1000-4939

2020

37

3

1065-1072

10.11776/cjam.37.03.B017

51408617:国家自然科学基金 430S00711/2018-42557:湖南省省级工程建设新技术研发与软科学研究计划项目

本校为第一机构

基于管廊原型单调静载试验和ABAQUS混凝土塑性损伤本构模型,建立了损伤因子与材料真实应力-应变之间的关系,对新型单舱矩形立式预制综合管廊结构的受力变形性能进行了数值计算分析,探明了管廊结构在单调静载作用下的破坏机理和荷载、应力集中和腋角钢筋设置对结构受力性能的影响。结果表明:预制管廊单调受力屈服破坏经过四个阶段,即内侧跨中的拉伸开裂屈服破坏、外侧跨中的压缩屈服破坏、腋角处的拉伸开裂破坏、钢筋的拉伸屈服破坏。其中,跨中处的屈服荷载是425kN,开裂荷载是360kN;跨中处开裂弯矩的试验值大于理论值和数值分析计算值,说明应用类似钢筋笼式的绑扎技术制成的预制管廊,结构整体性强...

Based on the monotonic static load test and ABAQUS concrete plastic damage constitutive model, the relationship between damage factor and material real stress and strain is established, and the mechanical and deformation properties of the new single-cabin rectangular prefabricated composite pipe gallery are numerically calculated and analyzed. The deformation and failure mechanism of pipeline gallery structure under monotonic static load and the influence of load, stress concentration area and armpit angle reinforcement on the mechanical proper...