When the stress level is lower and the stress ratio is larger , the maximum crack width is smaller and develops more placidly 应力水平越低、应力比越大,最大裂缝宽度越小、发展越平稳。
Two pieces of improvement on the crack width control method using nominal tensile stress for prestressed concrete flexural member 对用名义拉应力控制预应力混凝土受弯构件裂缝宽度方法的2点改进
According to the crack wide of the norm , the relationship of the diameter and the rate of the reinforcement are made up 对裂缝宽度以规范允许宽度为依据，建立起钢筋直径与配筋率之间的关系。
In addition , water gradients , crack width , permeability time , specimen ' s kinds can also influence the self - sealing degree 水力梯度、裂缝宽度、渗流时间、试件品种均对自愈程度有比较大的影响。
In addition , the calculating methods about the gap of the connectors and the maximum width of crack are discussed in the thesis 另外，作者对组合梁剪力连接件的设计理论及组合梁最大裂缝宽度计算方法作了逐一地探讨。
The relationships between the sensitivities of the optical fiber and crack widths at 300 , 45 , 60 were obtained 得到了在大坝安全监控缝宽控制范围内光纤与裂缝夹角为30 、 45和60的光纤灵敏性与裂缝宽度关系曲线。
Compared the limitation of crack width of different codes , suggestion is made that the limitation of code for design of concrete structure should be broadened 比较了国内外裂缝宽度限值的条件与限值,建议对hrb400级钢筋混凝土构件的裂缝宽度限值分条件放宽。
When the source frequency is low ( lower than 2khz ) and the widths of fractures are approximate , the difference of the snapshots and waveforms between different fracture models is not obvious 6 、当声源主频较低( 2khz )时，若裂缝宽度相差不是很大，波场图和波形图差别不明显。
And the effect of water pressure on concrete crack width is mainly studied ; concrete crack width of penstocks in three gorges hydropower station is predicted in the end 并重点研究了水头的变化对压力管道混凝土最大裂缝宽度的影响，最后对三峡电站压力管道混凝土结构裂缝进行了预测。
Those include the load carrying capacity of the specimens in the limit state , the cracking load of the specimens , the crack width of the specimens and the deflection of the specimens 论文从四个方面进行研究：轻骨料混凝土板的正截面承载力，抗裂度，正常使用极限状态下的裂缝宽度和挠度计算。
