混合配筋PHC管桩抗剪承载力模拟分析
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摘要
利用有限元软件ABAQUS对管桩建立数值分析计算模型,与在室内条件下的PHC-400-B-95-1400管桩抗剪承载力试验进行了对比,验证了建模的合理性。在此基础上,模拟分析了混合配筋对PHC管桩抗剪承载力的影响,得出不同直径和不同级别条件的混合配筋PHC管桩的破坏形式基本一致,各种形式下的混合配筋PHC管桩其抗剪承载力有所降低,但对其抗剪承载力影响程度并不明显。
Using the finite element software ABAQUS to establish the numerical analysis and calculation model of the pipe pile, the model was compared with the shear bearing capacity test of the PHC-400-B-95-1400 pipe pile under the indoor conditions, and the modeling was reasonable. On this basis, the effect of hybrid reinforcement on the shear capacity of PHC pipe pile was simulated and analyzed. It was concluded that the failure modes of PHC pipe pile with different diameters and different grades of hybrid reinforcement are basically the same, the shear bearing capacity of the hybrid PHC piles in various forms has been reduced, but the influence on the shear capacity was not obvious.
Using the finite element software ABAQUS to establish the numerical analysis and calculation model of the pipe pile, the model was compared with the shear bearing capacity test of the PHC-400-B-95-1400 pipe pile under the indoor conditions, and the modeling was reasonable. On this basis, the effect of hybrid reinforcement on the shear capacity of PHC pipe pile was simulated and analyzed. It was concluded that the failure modes of PHC pipe pile with different diameters and different grades of hybrid reinforcement are basically the same, the shear bearing capacity of the hybrid PHC piles in various forms has been reduced, but the influence on the shear capacity was not obvious.
引文
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[2]王铁成,杜宙芳,赵海龙,等.混合配筋管桩的抗震性能试验研究[J].土木工程与管理学报,2015,32(3):27-32.
[3]宁飞.PHC管桩中配不同直径普通钢筋抗震研究[J].低温建筑技术,2015,37(2):93-95.
[4]王新玲,冯香玲.混合配筋新型预应力混凝土管桩抗弯性能研究[J].施工技术, 2012, 41(16):118-122.
[5]王新玲,高会宗,周同和,等.新型混合配筋预应力混凝土管桩抗弯性能试验研究[J].工业建筑, 2012, 42(8):64-68.
[6]贾涛.混合配筋预应力管桩在水工建筑物深基坑支护中的应用[J].水利建设与管理, 2017, 37(3):11-15.
[7]中国建筑标准建筑设计研究院.预应力混凝土管桩图集:10SG409[S].北京:中国计划出版社, 2010.
[8]闫洁民,贺武斌,郭昭胜.PHC管桩抗剪承载力模拟分析[J].混凝土, 2018(1):133-137.
[9]中华人民共和国国家质量监督检验检疫总局,中国国家标准化管理委员会.先张法预应力混凝土管桩:GB13476―2009[S]. 2009.
[10]刘永超,郑刚,康谷贻,等.预应力混凝土管桩斜截面抗剪承载力试验研究[J].建筑结构, 2011, 41(5):93-97.
[11]刘劲松,刘红军.ABAQUS钢筋混凝土有限元分析[J].装备制造技术, 2009(6):69-70.
[12]尹新生,王诗朦.高强混凝土预应力管桩抗剪承载力数值模拟[J].低温建筑技术, 2018, 40(1):127-129.