1)Prestressed reinforcement预应力钢筋
1.In bonded prestressed concrete beam,the depth of compression is not only related to the ratio of tension reinforcement,but also is related to the kinds and schemes of prestressed reinforcement and common reinforcement and the lever of stress of the prestressed reinforcement.而在有粘结预应力砼梁中,受压区高度不仅跟受拉钢筋的配筋率有关,还跟预应力钢筋、非预应力钢筋的品种和匹配、以及预应力钢筋初始应力水平等因素有关。
2.If the prestressed reinforcement is arranged in certain cylindrical surface, the formula can be simplified peatly and the equivalent load can be expressed by the geometric property of curve of the reinforement along the developed cylindrical surface.如果预应力钢筋置于某个圆柱面内，则不但公式大为简化，而且可用圆柱展开面上钢筋曲线的几何特性表达等代荷载。
英文短句/例句
1.prestressed reinforced concrete sleeper预应力钢筋混凝土轨枕
2.stretching equipment for prestressing reinforcement预应力钢筋张拉设备
3.unbonded tendon未粘合的预应力钢筋
4.Analysis and Discussion on Stretching Amount of Beforehand Bearing Force of Reinforcing Bar;预应力钢筋伸长值计算的分析与讨论
5.A Method of Calculating the Center Line of Gravity of Prestressing Force of Steel in Plane Curved Girder Bridges曲线梁桥预应力钢筋合力重心线计算方法
6.Analyzing Ultimate Stress from Simply-supported Beam of Reinforced Concrete with External Prestressed Strengthened System;体外预应力钢筋混凝土梁桥极限承载能力分析
7.Modern Application and Characteristics of the Engineering Design of Non-adhesion Prestressed Steel Bar无粘结预应力钢筋的现代应用及工程设计特点
8.The Study on Effective Prestress Detection of Simply Supported Unbonded Prestressed Concrete Beam by Dynamical Method;动力法检测无粘结预应力钢筋混凝土简支梁的有效预应力研究
9.Technical consultant for Manufacture of big span prestressed concrete reiteration plate.大跨度预应力钢筋砼叠合板生产技术的咨询。
10.Make an Approach to the Plastic Casing of Non coherent Prestressed Reinforcing Bar in Matters of Quality无粘结预应力钢筋塑料套管质量问题的探讨
11.Experimental Study and Numerical Simulation of Bond Behavior of High-strength Prestressed Reinforcement;高强预应力钢筋粘结性能试验研究及数值模拟
12.Study on Appropriate Layout of Pre-stressing Strands in PC Continuous Rigid Frame;连续刚构桥预应力钢筋合理布束问题的研究
13.Research on Equivalent Elements for Reinfoced Concrete Briges;预应力钢筋混凝土桥梁等效单元的研究
14.heat treated steel bar for prestressed concrete预应力混凝土用热处理钢筋
15.Fracture analysis on pre-stress concrete ribbed bar of 45Si2Cr steel45Si2Cr预应力混凝土钢筋断裂分析
16.Experimental research of the pre-stressed concrete structure behavior with HRB500 steel barsHRB500级钢筋用于先张预应力梁的非预应力筋的试验研究
17.Theoretic Analysis and Calculation of Reinforced Concrete Beams Affixed with Pre-stressed Steel Plates预应力粘钢加固钢筋混凝土梁的理论分析计算
18.Burial and Calculation of PHC Reinforcing Bar Stress Meter;预应力管桩(PHC)钢筋应力计埋设与计算实例
相关短句/例句
prestressing tendon预应力钢筋
1.The high temperature test for prestressing tendons was made,and the thermal creep strain model and thermal creep strain rate model were built according to the testing results.通过对高强预应力钢筋进行高温蠕变试验 ,建立了预应力钢筋的高温蠕变和蠕变率力学模型 ,采用该模型对预应力混凝土结构的高温预应力损失及火灾下的结构行为进行了有限元分析 ,通过算例提出预应力钢筋高温蠕变引起的附加预应力损失估算公式。
2.Design methods, included the principle of defer-mining span and section, the selection of prestressing tendons and anchorages, the analy.文中介绍了这种渡槽的结构设计方法，包括槽身跨度和横截面尺寸的确定原则；纵向、横向和竖向预应力钢筋及锚固体系的选择；按平面问题和按空间问题分析方法以及槽身结构承载能力极限状态和正常使用极限状态设计要求等内容。
3)prestressed tendon预应力钢筋
1.Since pre-stressed concrete box girders usually have a large number of curve pre-stressed tendons,a type of combined element is presented to simulate the prestressed tendons of box girders,and then the number of elements can be significantly reduced.由于预应力混凝土箱梁中通常存在大量曲线预应力钢筋,提出一种组合单元,并用该单元模拟箱梁中的预应力钢筋,该方法可使结构分析时单元数量大大降低。
4)prestressed steel预应力钢筋
1.The change method of prestressed steel isn t described basically in specialized works.通过对预应力混凝土受弯构件的受力分析 ,提出了预应力混凝土受弯构件中预应力钢筋代换的基本方法。
2.The laws of variation of mechanical behaviors with the temperature are investigated for prestressed steel and non_prestressed steel.通过对２１根Φ１６月牙纹钢筋、４５根１２及８光圆钢筋、２４根ｓ５高强碳素钢丝高温下的力学性能试验，研究了预应力钢筋和非预应力钢筋的力学性能在高温下的变化规律。
5)prestressing steel预应力钢筋
1.The formula for accurate calculation on the theoretical value of elongation for the post-tensioning prestressing steel has been derived from the principle of prestress losses due to friction.运用预应力摩擦损失原理,推导出后张预应力钢筋理论伸长值的精确计算公式,在改进和完善《公路桥涵施工技术规范》(JTJ041-2000)有关后张法预应力钢筋理论伸长值计算方法的同时,显著提高了其计算精度,为保证预加应力的准确可靠,提供了重要的理论依据。
2.Here both the more reasonable arrangements of prestressing steel in prestressed concrete beams with relevant observation also conducted in tests, and the experimental study of the better reinforcements in square reinforced concrete slabs, are given with some details.阐述了预应力混凝土梁中预应力钢筋较合理的配置 ,进行了有关试验观测和钢筋混凝土方板优选配筋的试验研究 ,并都给出了一些细节 。
6)curve prestressed bar曲线预应力钢筋
延伸阅读
预应力钢筋张拉设备 使预应力混凝土结构里的钢筋产生并保持预应力的设备。分手动、电动和液压传动张拉机等。液压张拉机拉力大、重量轻，使用灵活方便。按钢筋张拉工艺有先张法和后张法两种。先张法用的夹具可以重复使用；后张法用的锚具将成为构件的一部分，不能取下再用。常采用不同的夹具来锚固各种钢筋，圆锥形夹具用于锚固直径12～16毫米的钢筋，镦头梳筋板夹具适用于板类构件中张拉低碳冷拔钢丝，波形夹具可成批张拉和锚固钢丝,螺杆锥形夹具则用于钢筋束的后张自锚。作业时,钢筋的一端锚固，另一端由张拉机通过夹具把钢筋夹紧张拉。穿心式张拉机作业时将钢筋穿入，打开前油嘴，由液压泵把高压油送入后油嘴，使张拉缸后退，利用尾部锚具将钢筋锚固并张拉。张拉到所需应力值后，关闭后油嘴。前油嘴进油，活塞向前推出，顶压锚塞，使钢筋锚固。回程时，活塞靠弹簧复位，完成张拉。 管类构件可采用环向预应力缠筋机，在管坯上缠绕预应力螺旋钢筋（见图）。作业时,管坯由卡盘夹持，通过调直张紧滚轮在管坯上绕4～5圈应力不大的螺旋钢筋,此后液压缸使两侧的张紧轮分开，钢筋便张拉到预定的应力值。此时管坯旋转，并开动小车，管体上就连续绕上预应力螺旋筋。螺距的大小由小车的行走速度来控制。 随着预应力构件生产批量的增加，一些专用的连续张拉设备得到发展，其特点是成组张拉效率高，需要的张拉力较小，可双向交叉配筋，张拉均匀，易于实现自动化生产。
