On accurate method for theoretical extension value calculation of prestressed reinforcement stretched by means of post-tensioning;
后张法预应力筋理论伸长量精确计算方法探讨
The requirements of prestressing duct on sectional dimension of members and arrangement of nonprestressed reinforcement are introduced.
介绍了预留孔道对构件截面尺寸、非预应力筋布置的要求,并对预应力结构施工中遇到的问题及处理方法进行了分析总结,提出了同一构件中有粘结与无粘结可综合使用,预应力结构施工应与其他工种相配合的建议,以供同行探讨。
This paper make an exposition of stipulations and theoretical basis of requirement of static performance of post-tensioned prestressed reinforcement-riveter assemblage in our country s standard and international proposal.
本文对我国标准和国际建议中关于后张预应力筋-锚具组装件静力性能要求的理论依据和规定作了讨论性阐述,并根据我国预应力筋产品标准的指标,对锚具的效率系数进行了具体分析,提出了个人观点和建议。
Factors influencing the elongation value of prestressing tendon;
浅析影响预应力筋伸长值的因素
Simplified calculation of the friction loss and anti-friction loss of the prestressing tendon in concrete structures;
混凝土结构中预应力筋摩擦损失与反摩擦损失简化计算
The calculation methods of stretching value and elongation value of prestressing tendon are introduced.
介绍了预应力筋张拉值和伸长值的计算方法,从张拉顺序、锚固、工艺等方面阐述了预应力筋张拉施工技术,提出了张拉伸长值的校核方法,对广大技术工作者具有参考价值。
Based on the frequent line-types of prestressed tendons in post-tensioned concrete structures,the authors induce the reduction coefficient of the average effective prestressing force for a single-span beam.
针对多跨预应力混凝土结构中常用的预应力筋线形,分别推导出其平均有效预应力的单跨折减系数,以此为基础建立了计算预应力筋理论伸长值的逐跨折减系数法,可供工程技术人员参考。
Through test and research on friction of slowly-bonded prestressed steel strand for six months curing period,variation law of friction coefficient of slowly-bonded prestressed tendon at different phases is an-alyzed and recommended value of friction coefficient is proposed.
通过对固化期为6个月的缓粘结预应力钢绞线的摩阻试验研究,分析不同时间阶段缓粘结预应力筋摩阻系数的变化规律,提出摩阻系数的建议值。
By meanes of economic analysis for several real project, the notable economic benefit by reasonable layont of prestressed bar is brought.
通过工程实例的经济分析,评述预应力筋的合理布置能带来显著的经济效益。
A cubical spline interpolation function is put forward to show the tendon profile of prestressed bars because the tendon profile can t be accurately expressed by the quadric parabola.
针对二次抛物线不能准确反映预应力筋实际线型特点的事实,提出了采用三次样条插值函数作为预应力筋的布筋线型函数,并在理论上确定了预应力筋反弯点的空间几何位置·根据预应力内荷载的特点,推导了预应力内荷载的计算方法,并应用这种函数精确地确定了预应力内荷载的分布规律·同时,设计了单层单跨预应力钢筋混凝土框架结构,对试件进行了实测,并结合大型ANSYS有限元分析程序进行数值模拟研究·试验结果和ANSYS有限元数值模拟结果相互吻合,验证了预应力筋的线型为三次样条插值曲线及预应力内荷载的分布规律为曲线函数的结论
Based on the theory of thesis \, the parameters of prestress tendon shape in shell are deduced in detail with the given shape function and the specific expression of the parameters is presented.
在文献 [3]理论的基础上 ,详细推导了给定位移形函数情况下 ,确定壳体中预应力筋形状的各个参数的具体表达式 。
The processing of T-beam prestress tendon and stretching construction technology;
T梁预应力筋的加工与张拉施工工艺
The paper analysed the calculating of extension value when prestress tendon was tensioned and introduced the usage of practical measuring results of extension value by construction experience.
文中对预应力筋张拉施工时伸长值的计算进行了分析，并根据施工体会对伸长值实测结果的取用进行了介
Calculation of the Friction Loss of Prestress for a Spacial Tendon
空间预应力筋预应力摩擦损失的计算
Stress Analysis of T-shaped Beam during the Procession of Tensioning Tendons;
张拉预应力筋阶段的T型梁应力分析
Research on the Tendon s Stress of Unbonded Full Prestressed Simply Supported Beam;
无粘结全预应力简支梁预应力筋受力状态研究
Experimental research of the pre-stressed concrete structure behavior with HRB500 steel bars
HRB500级钢筋用于先张预应力梁的非预应力筋的试验研究
Influence of arrangement ways of reinforcement of prestressing tendon on the box girder natural frequency
预应力筋布筋方式对简支梁固有频率的影响
Prediction of Prestress in Vitro and Limiting Stress Based on the Nerve Network;
基于神经网络的体外预应力筋极限应力的预测
The Function of Pre-stressed Steel in the Beams and Columns and the Outline of the Pre-stressed Construction
梁柱中预应力筋的功能及预应力施工要点
On the reform project of pre-cast bars of pre-cast concrete board of an edifice
浅谈某大厦预应力混凝土板预应力筋改造工程
" Anchorage, grip and coupler for prestressing tendons"
GB/T14370-1993预应力筋用锚具、夹具和连接器
The Design and Study on Anchors of Carbon Fiber Reinforced Tendons
碳纤维增强预应力筋锚具的设计研究
Study on Fatigue Behaviour of CFRP Prestressed RPC Beams
CFRP预应力筋RPC梁的抗疲劳性能研究
Experimental Investigation of Wedge-type Anchors for CFRP Tendons
CFRP预应力筋夹片式锚具的试验研究
Experimental Research on the Properties of Prestressed Concrete Beams after the SCC of Prestressed Bars;
预应力筋应力腐蚀后预应力混凝土梁的受力性能试验研究
no bond stretching
无粘结纲筋的后预应力
prestressed reinforced concrete sleeper
预应力钢筋混凝土轨枕
stretching equipment for prestressing reinforcement
预应力钢筋张拉设备
unbonded tendon
未粘合的预应力钢筋
The construction mechanics of anchor bar prestressing in pitsupporting structure of row of piles
排桩预应力支护结构中锚筋预应力的施工力学