摘要
为了研究裂缝对空心墩温度场和应力场的影响,以寒潮作用下的圆形空心桥墩为例,根据固体热传导微分方程和考虑温度应力的广义虎克定律,选择符合实际情况的边值条件,采用ANSYS软件计算了在寒潮作用下不同裂缝深度的混凝土桥墩温度场及其应力,计算结果说明:裂缝深度对混凝土圆形空心墩的温度场影响不大,空心墩外表面温度应力最大值出现在裂缝处,并且裂缝尖端的应力随着裂缝深度增加而增大,引起原有裂缝的继续发展,对混凝土桥墩产生不利影响.
In order to study the effect of crack on the temperature field and stress field of the hollow piers,this paper takes the circular hollow piers under the action of cold tide as an example according to the solid heat conduction differential equation and the generalized Hooke′s law considering the temperature stress.In view of the differential equation of solid heat conduction and the generalized Hooke′s law considering the temperature stress,the boundary conditions are chosen with the actual situation.The ANSYS simulation is performed for calculating the temperature field and stress of concrete piers with cracks in different depths.Results show that the depth of the crack has little effect on the temperature field of the concrete circular hollow pier,and the stress at the crack tip increases with the increase of the crack depth,which causes the development of the original cracks and adversely affects the concrete piers.
作者
吴云芳
林博
欧阳硕
WU Yunfang;LIN Bo;OUYANG Shuo(School of Civil Engineering,Chongqing 400045,China;Key Laboratory of New Technology for Construction of Cities in Mountain Area(Chongqing University),Ministry of Education,Chongqing 400045,China)
出处
《西安建筑科技大学学报（自然科学版）》
CSCD
北大核心
2018年第4期485-490,共6页
Journal of Xi'an University of Architecture & Technology(Natural Science Edition)
基金
国家自然科学基金资助项目(51578098)
关键词
裂缝
桥墩
温度场
温度应力
crack
pier
temperature field
temperature stress
