2) prestressed concrete continuous bridge
预应力混凝土连续梁桥
1.
This paper used the model for the camber control of the prestressed concrete continuous bridge construction.
将GM(1,1)模型用于预应力混凝土连续梁桥施工中预拱度的控制。
2.
In this paper the authors establish an reliability analytical model of the global stability during the cantilever construction period of prestressed concrete continuous bridges.
建立了预应力混凝土连续梁桥悬臂施工期间整体稳定性可靠度分析模型 ,该模型突破了传统将支座视为理想铰支的简化方法 ,倾覆失效时考虑了偏心受压 ,使设计更为合理 ,并就此模型对各设计变量及参数作了较全面的分析 ,以研究它们对桥梁整体稳定性的影响程
3) prestressed concrete bridge
预应力混凝土桥梁
1.
Analysis and computation method of structure for the construction control of prestressed concrete bridge;
预应力混凝土桥梁施工控制结构分析计算方法
2.
The concepts of restraint influence coefficient of steel on the time-dependent effects of prestressed concrete bridges due to creep and shrinkage are present systematically, and the expressions are provided.
系统地提出了预应力混凝土桥梁结构中钢筋对徐变和收缩时变效应的约束影响系数的概念,并给出了影响系数的计算公式,籍此提出了时变效应分析的钢筋约束影响系数法,建立了一套理论公式,可计算时变的钢筋和混凝土应力、应变及梁体竖向变形。
3.
The relationship between stress and strain of concrete in prestressed concrete bridges is written as algebraic form within load duration and the equilibrium equations of internal force and compatibility conditions are introduced.
首先将预应力混凝土桥梁中考虑收缩、徐变影响的任意时刻混凝土应力、应变关系在持荷时段内写成代数形式,引入内力平衡方程及变形协调条件后,提出了计入截面上钢筋位置、配筋率、预应力钢筋松弛、混凝土弹性模量随时间变化等影响的徐变效应分析的全量形式自动递进法,并建立了计算式,适用于任何形式的收缩、徐变特性表达式;基于建立的全量形式公式,可方便地求解任意时刻混凝土、钢筋的应力与应变和梁体竖向变形。
4) prestressed concrete continuous girder bridge
预应力混凝土连续梁桥
1.
Variability in dynamic characteristics and comfort evaluation of a prestressed concrete continuous girder bridge;
预应力混凝土连续梁桥振动特性变异及舒适度评价
2.
A kind of establisment method of geometric models for prestressed concrete continuous girder bridge is given, and builds the box-girder constructional geometricmodels.
针对预应力混凝土连续梁桥，提出了一种几何模型的建立方法；建立了箱形梁构造的几何模型。
5) pre-stressed concrete bridge
预应力混凝土桥梁
1.
Discussion on common problems of pore canal in pre-stressed concrete bridge;
预应力混凝土桥梁孔道常见问题探讨
2.
With the construction course of a pre-stressed concrete bridge as a practical example,the long-term deformation of prestressed concrete bridges of the passengers-oriented railway is simulated and analysed by the age-adjusted effective modulus method and progressive finite element method in the paper.
结合预应力混凝土桥梁结构的施工过程,采用按龄期调整的有效弹性模量法和有限元步进法结合实例对客运专线预应力混凝土桥梁结构的长期变形进行了仿真分析研究。
补充资料：预应力
分子式：
CAS号：
性质：试验中试样所受到的预加的恒定静态应力，单位为Pa。在生热性疲劳试验中，如固特里奇屈挠试验中，一般都施加一恒定预应力，使试样产生一静态变形，再叠加一周期压缩变形进行试验，通常预应力的大小会影响试样的疲劳寿命，预应力越大，则试样寿命会越明显缩短。也有的先施加一静态压缩变形，再叠加周期性剪切变形进行试验。
CAS号：
性质：试验中试样所受到的预加的恒定静态应力，单位为Pa。在生热性疲劳试验中，如固特里奇屈挠试验中，一般都施加一恒定预应力，使试样产生一静态变形，再叠加一周期压缩变形进行试验，通常预应力的大小会影响试样的疲劳寿命，预应力越大，则试样寿命会越明显缩短。也有的先施加一静态压缩变形，再叠加周期性剪切变形进行试验。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条