Analysis of stability against sliding of dam by passive resisting force method 用被动抗力法分析大坝抗滑稳定性
In this paper , based on resisting force model and load model , the limit state equations of rc bridge are established , thus the time - dependent relationship of rc bridge reliability is analyzed 本文在抗力衰减模型及桥梁荷载模型的基础上,通过建立耐久性极限状态方程,分析计算桥梁可靠度随时间的变化情况。
The structural characteristic of rc bridge is that the resisting force is deteriorating in life service of bridge , but most of reliability researches do n ' t consider the attenuation of resisting force until recent 既有混凝土桥梁结构的特点是抗力随时间不断衰减,但目前大多数的可靠度研究都没有涉及到抗力衰减。
Situations of change and development are analyzed which are moment and stress of pile , stress of concrete iron and resisting force of soil under horizontal load . the mechanics of the horizontal load of piles can be gained from the analysis methods 通过对随水平加载过程变化的桩体损伤、桩身应力、钢筋应力和土体抗力等深入分析,得出了桩的水平承载力受力机理。
It also simulated the influence and relationship in the transfiguration resisting force , coefficient of he transfiguration resisting force , rolling area , rolling temperature , rolling pressure , loop length , the transition between loop length and loop high 模拟仿真出了变形抗力、接触面积、温度、轧制压力、活套套量、活套套量与套高转换等各个模型之间的相互影响。
Make use of these achievement and test data , the numerical computation of ming tomb underground power station was carried out , and its average elastic modulus and the elastic resisting force of surrounding rock were obtained 结合十三陵抽水蓄能电站地下厂房结构的振动测试资料,对其进行动力反演计算分析,得到厂房混凝土材料的平均动弹模和混凝土与外围岩石之间的传力形式。
Firstly , each single factor ( concrete carbonation , steel bar corrosion materials strength ) related the resisting forces of rc bridges is considered in this paper . then a resisting force model for multiple factors is created based on two types of steel bar corrosion : general and localized corrosion models 本文首先考虑混凝土碳化、钢筋锈蚀、材料强度等单因素对桥梁结构抗力衰减的影响,然后在此基础上建立多因素综合作用下的结构抗力衰减模型。
On the basis of large numbers of information from calculation , the deformation rule of settlement of the groundsill , the diffusing range of load of the tower , and the deformation characters of the foundation and groundsill , and the distributing rule for resisting force of fundus are summed up . and some suggests are given out about design of the foundation in high - rise buildings when using analytic method of interaction 基于大量的计算数据,本文总结出了在荷载作用下,地基的沉降变形规律,塔楼荷载扩散范围,地基基础的变形特征,以及基底反力的分布规律,对高层建筑基础设计中采用共同作用分析方法提出了具体的建议。
The phase change of soil moisture and inflation of the frozen moisture c ause the reduction of hydraulic conductivity by reducing the area of flow section and the aperture of soil pore space , increasing the capillary resisting force to soil moisture , and decreasing the water potential gradient because of the increasing of movement distances of soil water 导水率减小是冻结土壤入渗能力减小的根本原因,而土壤中液态水的相变是导水率减小的根源所在。土壤水分的相变及其膨胀通过减小土壤水分过水断面面积和孔隙孔径,增大阻力和由于增长运动距离而减小水势梯度使冻结土壤的导水率降低。
For the first time , based on frame structure with large thick raft plinth and many engineering examples , analytic method of interaction that means the analysis on three parts above as a whole with a full consideration of interaction thereof that met the need of the deformation correspond on the boundary was used to research on the interaction of structure and groundsill in this paper . and five models were adopted , which were : ( 1 ) a tube with symmetrical double - axis structure and symmetrical loads , ( 2 ) two tubes with symmetrical double - axis structure and symmetrical loads , and ( 3 ) a tube with symmetrical single - axis structure and symmetrical loads , and ( 4 ) two tubes with symmetrical double - axis structure and unsymmetrical loads , and ( 5 ) two tubes with unsymmetrical structure and loads . based on the middle - thick slab theory from mindli and the model for groundsill from winkle , the deformation character of raft foundation and the distributing rule for resisting force of fundus were studied in details by using b ig - style fem ( finite element member ) software , ansys 本文结合了大量的工程实例,以大底盘框架厚筏结构形式为研究对象,针对单个和多个塔楼布置于同一个大底盘框架厚筏基上的复杂结构体系,分( 1 )一个塔楼:结构布置双轴对称,荷载对称的情况; ( 2 )两个塔楼:结构布置双轴对称,荷载对称的情况; ( 3 )一个塔楼:结构布置单轴对称,荷载对称的情? ; ( 4 )两个塔楼:结构布置双轴对称,荷载不对称的情况; ( 5 )两个塔楼:结构布置和荷载均不对称的情况等五种组合情况,全面系统地探讨了上部结构?基础?地基相互作用的大跨度基础、基础板变形特征及其基底反力的分布规律。