HSSTS新管幕构件受力性能数值分析研究  

Numerical analysis study on mechanical performance of H-shaped Steel Tube Slab specimen

作　　者：张超哲 赵文[2] 刘松玉[1] 柏谦[2] 贾鹏蛟 韩健勇 Zhang Chaozhe;Zhao Wen;Liu Songyu;Bai Qian;Jia Pengjiao;Han Jianyong(Institute of Geotechnical Engineering,Southeast University,210096,Nanjing,China;School of Resources&Civil Engineering,Northeastern University,110819,Shenyang,China;School of Civil Engineering,Shandong Jianzhu University,250101,Jinan,China)

机构地区：[1]东南大学岩土工程研究所,南京210096 [2]东北大学资源与土木工程学院,沈阳110819 [3]山东建筑大学土木工程学院,济南250101

出　　处：《应用力学学报》2020年第4期1468-1476,I0006,共10页Chinese Journal of Applied Mechanics

基　　金：国家自然科学基金(51578116;51878127)。

摘　　要：针对目前管幕工法应用时存在的施工步骤繁琐、抗弯刚度较弱等问题,本文提出了一种采用H型钢连接的新型管幕结构(HSSTS);基于相关构件室内试验结果,采用ABAQUS有限元软件建立了HSSTS有限元模型,探究了其受力特征和破坏规律;并详细研究了多个部件参数对结构抗弯性能的影响,同时对构件承载力和抗弯刚度进行了多元线性回归分析。结果表明:结构具有较高的横向刚度,钢管壁厚对承载力影响明显,翼缘板厚度对其影响不明显,混凝土强度对其具有一定影响,其极限荷载环比提高百分比平均值分别为5.23%、0.29%、3.94%;基于多元线性回归理论建立的承载力和抗弯刚度回归模型的相关系数分别为0.992和0.927,表明模型拟合效果较好。For the problem of complicated process and weak rigidity during construction by pipe roof method, H-shaped Steel Tube Slab(HSSTS) structure is proposed. Based on results of the revelent tests, the finite element model of HSSTS specimen is built by the ABAQUS software. The stress characteristic and failure mode of the specimen as well as the influence of many component parameters on flexural behavior are studied. Besides, the bearing capacity and flexural rigidity of specimens are analyzed by multiple linear regression theory. The results indicate that the structure reflects high transverse rigidity and tube thickness have an obvious influence on the bearing capacity of HSSTS specimens. However, the impact of flange thickness is unobvious and concrete grade has a certain influence on bearing capacity of specimens. Percentage increase of ultimate bearing capacity for all parameters is 5.23, 0.29 and 3.94, respectively. The correlation coefficients of the bearing capacity and flexural stiffness regression models based on the multiple linear regression theory are 0.992 and 0.927, respectively, indicating that the fitting effect of the models is good.

关 键 词：H型钢 翼缘板 管幕 抗弯性能 多元线性回归 

分 类 号：TU93[建筑科学—结构工程]