利用有关文献试验得到的受拉区纵筋应力应变关系、布置方式等，推导出建议的设计取值公式。
According to the stress-strain relation and disposal mode of steel in the tensional region of section from the experimental results of other papers, the design formula is concluded.
为了解预应力钢绞线张拉顺序对新老混凝土组合梁力学性能的影响，进行了双T形截面新老混凝土组合梁试验研究。
The old and new concrete of composite beam with double T-section was tested to investigate the effect of tension sequence of prestressing tendon on mechanical behavior of composite beam.
介绍了高流态自密实砼的性能、配合比设计方法及其在中等强度等级预应力受弯拉砼构件中的应用试验及测试情况。
This paper introduced the characteristics of high dense fluid concrete, design of batching ratio, the experiment and test of bent concrete component in medium hardness prestress.
对目前在国内外引起广泛关注的大跨度空间索承网壳结构进行了成形即预应力张拉阶段的试验研究。
A model experimental research of the stage of form finding (namely prestressing) for the cable-supported lattice shell structure, which is widely paid attention to in the world, is carried out.
试验结果表明，与非预应力碳纤维布加固梁相比，预应力碳纤维布加固后混凝土梁中受拉钢筋应力幅显著降低，混凝土梁疲劳寿命明显延长。
Experimental results show that the stress amplitude of the tensioned bar is decreased remarkably and the fatigue life is then obviously increased as compared to normal strengthening method.
拉、压试验可以在带国压和温度的三向应力状态下进行。
The tensile and compressive tests can be conducted under three dimensional state of stress with confining pressure and a given temperature.
本文根据试验和有限元计算结果，建立了一种受拉钢筋应力控制计算公式。
Based on pile-up beam tests and finite element analysis of reinforced con-crete, a new type formula of reinforcing steel stress for reinforced concrete pile-up beam is established in this paper.
第二、进行了悬臂式抗滑桩和预应力锚拉桩在酸-应力耦合条件下的耐久性模型试验。
Second, durability model test for cantilevered and prestressed anchor anti-slide pile are took up, all model piles are affected under acid-stress coupling.
重点内容有预应力CFRP布的张拉设备，加固施工流程和技术要点以及试验研究。
These methods and technologies include tension equipments of prestress CFRP cloth, its construction process and key technical points, and test data and so on.
进行了碳化环境下预应力混凝土试件弯曲受拉和直接受压的耐久性试验研究，阐述了碳化作用对预应力混凝土结构的损伤机理。
The durability experiment of prestressed concrete specimens in the bending tensile status or in the directly compressive status in carbonation environment has been carried out.
介绍了这些试验及研究结果，给出了冷轧带肋钢筋预应力混凝土空心板中混凝土拉应力限制系数的建议值。
Results of the test and theoretical researches are introduced and the values of restrictive coefficient of tension stress in concrete for design of the slabs are suggested.
试验结果表明，随着受拉区非预应力筋配筋率和预应力筋配筋率的增大，梁的延性逐渐减小；
The experimental results show that the ductility of the beams decreases gradually with the increasing of non prestressed and prestressed reinforcement index in the strained zone;
利用引伸计拉力试验中的规定总延伸强度可以评价灰铸铁的拉压疲劳极限，也可以利用该数值作为预计的疲劳极限，用于拉压疲劳试验应力水平的选取。
The proof strength can be used to evaluate the tension-compression fatigue strength of gray cast iron, and also used as the stress level of the tension-compression fatigue test.
通过直接拉伸试验研究了不同自应力等级下的钢纤维自应力混凝土的受拉应力-应变全曲线特征。
Based on the direct tension test, the characteristics of tension stress-strain full curves of steel fiber reinforced self-stressing concrete were investigated.
试验证明，扭力扳手预应力锚杆张拉值与锚杆应力计监测值基本一致，说明采用扭力扳手进行预应力锚杆张拉的施工方法简易可行。
It is proved that the stretching values with the wrest wrench are almost the same as those with the stress gauge monitoring method, but the former method is simpler and more feasible.
国内外已有试验研究表明，有粘结预应力FRP筋混凝土梁的破坏模式包括界限破坏、受压破坏与受拉破坏三种。
The failure modes of concrete beams prestressed with bonded FRP tendons can be classified into three types: the balanced failure, compression-controlled failure and tension-controlled failure.
试验证明，扭力扳手预应力锚杆张拉值与锚杆应力计监测值基本一致，说明采用扭力扳手进行预应力锚杆张拉的施工方法简易可行。
It is proved that the stretching values with the wrest wrench are almost the same as those with the stress gauge monitoring method, but the former method is simpler and.
本文通过试件的中心受拉试验，测定了砼的受拉应力-变形全曲线。部分试件还进行了反复荷载试验。
Complete stress-deformation curves for concrete in tension were obtained from axial tension tests in which some of the specimens were tested under cyclic loading.
试验结果表明，沿拉削速度方向的表面残余应力为拉应力，最大残余应力在表面层下。
The research shows that residual stress in the direction of broaching rate are tensile at the surface . The maximum residual stress is beneath the surface.
张拉试验中碳纤维建立的最大张拉应力达到2483mpa，最大张拉力达到149kn。
Opens pulls in the experiment the carbon fiber establishment biggest tensile stress to achieve 2483mpa, the biggest tensioning force achieves 149kn.
国内外已有试验研究表明，有粘结预应力FRP筋混凝土梁的破坏模式包括界限破坏、受压破坏与受拉破坏三种。
So the deflections of concrete beams prestressed with bonded FRP tendons are expected to be larger than those of the steel bars cases.
国内外已有试验研究表明，有粘结预应力FRP筋混凝土梁的破坏模式包括界限破坏、受压破坏与受拉破坏三种。
So the deflections of concrete beams prestressed with bonded FRP tendons are expected to be larger than those of the steel bars cases.
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