预应力(prestress)： 预应力是为了改善结构服役表现，在施工期间给结构预先施加的压应力，结构服役期间预加压应力可全部或部分抵消荷载导致的拉应力，避免结构破坏。常用于混凝土结构。预应力混凝土结构，是在结构承受荷载之前，预先对其施加压力，使其在外荷载作用时的受拉区混凝土内力产生压应力，用以抵消或减小外荷载产生的拉应力，使结构在正常使用的情况下不产生裂缝或者裂得比较晚。
预应力结构 prestressed structure ; prestressed concrete structure ; pre-stress structure
预应力钢筒混凝土管 PCCP ; Prestressed Concrete Cylinder Pipe ; PDDP
预应力混凝土 [建] Prestressed Concrete
预应力钢筒砼管 PCCP ; prestressed concrete cylinder pipe
预应力钢丝 [材] prestressed wire ; compressor wire ; reinforcement wire ; Prestressed steel wire
预应力高强混凝土管桩 PHC ; prestress high strength concrete pile ; Prestressed high strength concrete pipe pile
预应力混凝土管桩 PHC ; prestressed concrete pipe pile ; concrete pipe ; Prestressed Concrete Piles
预应力钢筋 prestressed reinforcement ; prestressing tendon ; Prestressed steel
无粘结预应力 Unbonded prestressing ; unbonded prestressed ; unbounded prestressed concrete ; unbonded tendons
预应力筋 prestressed tendon ; tendon ; prestressed reinforcement ; prestressing tendon
Genetic algorithm method is proposed to optimize the prestress of suspen-dome.
本文采用了遗传算法对弦支穹顶结构进行了预应力优化设计。
参考来源 - 弦支穹顶结构的理论研究The instability state of BaiLong playground slope was caused by anchor-hold of anti-slide pile and invalidation of pre-stress anchor-pire.
针对白龙运动场边坡问题，边坡目前的不稳定状态是由于抗滑桩锚固力不够、预应力地锚力失效所致。
参考来源 - 白龙运动场边坡稳定性及加固分析Space pre-tension structures under construction and pre-tensioning are usually with sophisticated behaviors and small stiffness.
预应力空间结构施工张拉过程受力复杂,刚度较小。
参考来源 - 预应力空间结构成形过程分析Through taking the pretensioning with tendon ,the space lattice structure could effectively improve the weight of bearing,control the distortion of the structure, minimize the cost of the engineering.
在空间网格结构中通过拉索引入预应力，能够有效地提高结构承载力。 控制结构变形，降低工程造价。
参考来源 - 拉索预应力空间网格结构的设计与应用In the prestress design of PC continuous rigid frame bridge, there are two problems in dire need of solving.
在预应力混凝土连续刚构桥预应力设计中，有两个问题急需要解决。
参考来源 - 预应力混凝土连续刚构桥预应力设计若干问题的研究Thirdly, pretressing, concrete creep and bending rigidity of box girder are studied to discuss their impacts on the deformation of girder.
再次,讨论了预应力、混凝土徐变、箱梁抗弯刚度等对桥梁结构下挠的影响。
参考来源 - 预应力混凝土梁桥的徐变下挠研究Initial stresses often exist in many working structures in modern military and civil engineering. So studying the mechanical characteristics, especially that of dynamics is exactly worthy in practice.
在现代军事和民用工程中,许多结构在工作过程中常常存在预应力,因此,研究含预应力结构的力学特性,特别是其动力学特性,具有重要的实用价值。
参考来源 - 含局部预应力结构动力学特性与稳定性分析·2,447,543篇论文数据，部分数据来源于NoteExpress
轮辐式预应力索桁结构是一种新型空间结构。
Spokewise prestressed cable-truss structure is a new type of spatial structure.
预应力法在转子动力学问题的研究中可进一步拓展。
The prestress method should be developed in the study of the rotor dynamics problems.
在试验中，预应力次弯矩是通过调整支座高度来实现的。
In the test, the prestressed secondary moment is established by adjusting middle support height.
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