According to the experimental results of limit torque in eight RC structural members under the combined action of axial tension and bending twisting moment, the author studies the damage forms of the members, the stress strain variation law of the longitudinal and the crossed steels. 根据8根钢筋混凝土拉弯扭构件抗扭强度的试验结果,对拉弯扭构件的破坏形态、纵筋及箍筋的应力应变规律等问题进行了分析研究。
Apply oil to the strand when twisting rope, use pre-deformation and after-deformation methods to dispel stress, select the best twisting parameter. 成绳时股涂油,用预变形和后变形消除应力,选用最佳捻制参数。
A reversal acceleration phenomenon is recognized under the state of continuous extension of the baseline since 1988. The yearly twisting along the northern segment of Anqiu-Juxian fault is 0.40 mm through calculation and the principal compressive stress axis is oriented at N40 ° W. 经计算认为安丘&莒县断裂北段年扭动量0.40毫米,主压应力轴方向N40°W。
Dynamic Measurement and Calculation of Twisting Stress of Crankshaft and Flywheel System in Diesel Type TC 387 TC387型柴油机曲轴飞轮系统扭转应力动态试验与计算
The main problems existed while cementing thermal recovery well for thick oil are casing twisting off, deforming and leakage, and the best method for solving these problems are preceding stress cementing technique. 稠油热采井采用常规固井技术存在的主要问题是套管的错断、变形和泄露,而解决该问题的较好方法就是采用预应力固井技术。