| 1. | The corrosion rate of main bars is the only varying factor considered in this experiment 试验中仅将主筋锈蚀率作为变化因素。 |
| 2. | All specimens were composed of one control beam ( without main bars corrosion ) and eight pieces of corroded main bars beams ( with corrosion rate from 4 % to 12 % ) 全部试件包括1根对比梁(主筋未锈蚀)和8根加速锈蚀梁(主筋的锈蚀率范围为4 % - 12 % ) 。 |
| 3. | The analysis on all aspects showed that the mechanics property of the corroded reinforcement concrete beams was affected by main bar corrosion rate and the number of fatigue circles 综合分析表明,主筋锈蚀率和疲劳循环次数影响钢筋混凝土梁的静力力学性能。 |
| 4. | When the soil - nailing is under operation , contrast between the actual pull force and the value calculated by current regulations is made 采用在土钉主筋上埋设钢筋应力计进行土钉实际工作状态下的拉力测试和把实测拉力与现行规程计算得出的结果作对比的研究方法。 |
| 5. | The results of the static tensile experiments showed that the static property of the main bars was greatly changed after fatigue load effect which also changed the mechanics property of corroded reinforcement concrete beams 静力拉伸试验结果表明,主筋在疲劳循环载荷作用后,静力力学性能发生了较大的转变;疲劳循环加载较大地改变了锈蚀钢筋混凝土梁的力学性能。 |
| 6. | Vibration test was done on the beams under different state . main bars of all the specimens were taken out for static tensile experiment after fatigue experiments . it showed that the vibration test cannot predict the fatigue failure of the fatigued beams effectively 疲劳试验中,对梁在不同疲劳状态下的振动特征进行了测试;在疲劳试验结束后,取出梁中主筋进行静力拉伸试验。 |
| 7. | In the second part , we researched the bending strength of cfrp tendon concrete beams , analysed the function of bearing , deflection and crack of the beams and got the conclusion . in addition , we carried on the simulation analysis about the beams by the finite element analysis software ansys , so that we can get a comprehensive summing - up 然后我们对采用碳纤维塑料筋作为受拉主筋的普通混凝土梁在三分点竖向荷载作用下的抗弯性能进行了试验,对试验中梁试件的承载力、挠度和裂缝开展等性能进行了分析并得出了相关结论。 |
| 8. | In a word , it is show that joints could be strengthened by cfs and it could be put into use in civil engineering in large scale . at the same time , experiments also show than cfs used in joints strengthening have not been make full use . the failure mode of cfs is the debond failure between concrete and steel 同时,利用对试验构件的应变片分析,揭示了cfs加固节点的破坏具有其自身的特殊性,即cfs的利用率比较低、 cfs的破坏以混凝土保护层?主筋界面的粘结破坏为主、加固试件和非加固构件破坏形态基本一致等特点。 |
| 9. | On the base of site monitoring on several multi - arch highway tunnels , this paper introduces some site monitoring methods about the force of reinforcing steel bar , the exterior and interior strain of concrete and the displacement of the wall , which aim at the monitoring of middle wall of multi - arch highway tunnel 在多座连拱隧道现场监测工作的基础上,文章主要介绍了主筋轴力量测、混凝土表面应变量测、混凝土内部应变量测,以及位移量测等针对连拱隧道中隔墙的现场监测方法,并结合中隔墙主筋轴力量刚,给出现场监测及分析实例。 |
| 10. | The deflection formula both used in classic rc theory and in rc code is correspond to service state . however after rc members strengthened with frp , the main rebar is under the post - yielding stage . therefore the normal deflection formula is not suitable for calculating the deflection of rc members strengthened with frp 但由于钢筋混凝土构件加固后,受拉主筋一般都进入屈服阶段,否则达不到加固效果;而经典钢筋混凝土理论和我国规范中的计算公式都是针对构件处于正常使用状态下的变形计算。 |