1·Research on law of stress increment of unbonded tendons in continuous prestressed concrete beam and slab;
比较了有粘结与无粘结力筋两种预应力混凝土结构的优缺点。
2·Some diseases usually appear in the tension construction of post-tensioning prestressed concrete beam slabs.
后张法预应力混凝土梁板在张拉施工过程中，经常会出现一些施工病害。
3·The prestressed concrete beam bridge with corrugated web has greatly improved the traditional prestressed concrete beam bridge.
波纹钢腹板预应力混凝土梁桥是对传统的预应力混凝土梁桥的一次重大改进。
4·The main difficulty of stress analysis of unbonded partially prestressed concrete beam is how to determine unbonded tendons stress.
使用荷载下无粘结部分预应力混凝土梁应力分析的主要困难，是如何确定无粘结预应力筋的应力。
5·In this paper the moment redistribution due to prestressing in precast segment continuous prestressed concrete beam erected by cantilever method is described.
本文叙述了悬臂拼装预应力混凝土连续梁的预加力引起的弯矩重分布。
6·In this paper, the genetic algorithm-neural network model is used to predict the ductility of unbonded partially prestressed concrete beam with high strength.
尝试利用遗传-神经网络模型，对无粘结部分预应力高强混凝土梁的延性进行预报。
7·Based on the demands of two limit states, the design control equations of cross section for prestressed concrete beam are derived and the direct design method is presented.
根据两类极限状态的基本要求，建立了预应力混凝土梁截面设计的控制方程，提出了直接设计方法。
8·With abroad data and rational analysis, the major work is described as follows: (1) Influencing factors of reversed arch in prestressed concrete beam is analyzed at length.
本文通过广泛的资料收集和合理的理论分析与计算，主要进行了以下几项工作：(1)较细致地分析了影响预应力混凝土桥梁起拱度的各项因素。
9·The main difficulty in analysis of unbonded prestressed concrete beam bridge is the coupling between the sectional strength of member and the whole structural deformation of member.
分析无粘结预应力混凝土梁桥的主要困难，在于构件的截面强度和构件整体变形耦合。
10·Used the deflection calculation method proposed by the paper, calculated the deflection under various load of the cracked prestressed concrete beam, and compared with experimental value.
采用本文提出的挠度计算方法计算了各级荷载下开裂预应力混凝土梁的挠度，并与试验值进行对比。