1) twice-prestressed concrete composite beam
二次预应力混凝土组合梁
1.
The new type of twice-prestressed concrete composite beam can greatly reduce the inverted camber which is induced during the process of prestressing and creep, so as to prevent the high-speed railway bridge from being cambered too much and to satisfy the requirements set by high-speed railway design criterion.
其次在综合考虑混凝土徐变和预应力损失相互影响的基础上,基于平截面假定和线性徐变理论探讨了二次预应力组合梁的徐变应力重分布问题,根据按龄期调整的有效模量法推导了二次预应力组合梁徐变应力重分布、徐变变形计算公式;并利用Visual Basic编制了二次预应力混凝土组合梁徐变效应分析程序。
3) prestressed concrete superposed beam
预应力混凝土叠合梁
1.
In this paper,the prestressed concrete superposed beam is analysed by means of strips method and using matlab language,in which the stress-strain relations of concrete and bar,geometrical conditions,equilibrium conditions are considered.
运用钢筋和混凝土的应力 -应变关系、几何条件和平衡条件 ,用条带法实现积分 ,对预应力混凝土叠合梁进行电算分析 ,计算结果基本能够反映预应力混凝土叠合梁的两阶段受力特征。
4) prestressed continuous steel-concrete composite beam
预应力钢-混凝土连续组合梁
1.
Deformation analysis of prestressed continuous steel-concrete composite beams;
预应力钢-混凝土连续组合梁的变形分析
5) steel prestressed concrete composite continuous beams
钢-预应力混凝土连续组合梁
6) prestressed steel-concrete composite continuous beam bridge
预应力钢-混凝土组合连续梁桥
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。
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参考词条