The deflection and the crack width of the SRC transfer girder are calculated.
验算钢骨混凝土转换梁的挠度和裂缝宽度。
Then, through the crack width and crack spacing analysis, proposed control measures for cracks from design, construction, etc.
然后,通过对裂缝宽度和裂缝间距的分析,从设计、施工等方面提出控制裂缝的措施。
It shows that finite element analysis could replace experiments to study the crack width of reinforced concrete beams in a way.
说明有限元分析在某种程度上可以代替试验对钢筋混凝土梁裂缝宽度进行研究分析。
The test results show that steel fiber reinforced self-stressing concrete could decrease the crack width of penstocks effectively.
试验表明,利用钢纤维和自应力混凝土可以有效地降低管道外包混凝土的裂缝宽度。
According to the test results and theoretical analyses, a method of calculating the crack width of unbonded partially prestressed concrete beams is presented.
在试验和理论分析的墓础上,提出了无粘结部分预应力混凝土梁裂缝宽度的计算方法。
The results show that the crack extent, the crack width and the reinforced bar stresses increase with the increment of the original gap width in the operation;
同时研究结果表明:运行期,混凝土衬砌的开裂范围、裂缝宽度和相应的钢筋应力随着衬砌与围岩之间初始缝隙值的增大而增大;
Based on the test results, the calculation formulas of the width in cistern structure are proposed, and the detailing requirements of short bars are advanced in order to control the crack width.
以试验结果为基础,提出了水池结构中裂缝宽度的计算公式及控制裂缝宽度的短钢筋的构造要求。
The fibers allow the concrete to bend and crack in narrow hair-width fractures rather than gaping splits.
纤维可以使混凝土弯曲并出现头发丝细的裂纹,而不是直接裂出口子。
The reason of wall cracks is analyzed, the standard problems of crack width are stated and the preventive methods and measures in the design and construction are presented for reference.
本文分析了墙体裂缝的产生原因,阐述了裂缝宽度的标准问题,并提出了在设计、施工中相应采取的防治方法和措施,供大家参考。
The natural frequencies of beam are calculated with finite element method in the cases of different crack width and different crack depth.
本文利用有限元法分别计算在不同的裂纹深度、不同的裂纹开口宽度的情况下梁的固有频率。
Then, the strength of the structure and crack width are checked by using the nonlinear FEM.
然后以考虑混凝土开裂的非线性有限元方法校核结构强度和裂缝宽度。
Statistic data were obtained by tests and dissections and the relationships between crack length, width and depth were given as a reference for crack depth evaluation.
通过大量检测试验和解剖,得出统计规律数据,从而得到裂纹长度、宽度与深度之间的对照表,对裂纹深度的评估有一定的参考价值。
The creep and shrinkage of concrete is the major problem that leads to the enlargement of crack width in concrete structures, under the action of long-term load.
混凝土的徐变和收缩是长期荷载作用下混凝土结构裂缝宽度扩大的主要影响因素。
Therefore, the checking formula for the designing method is consistent with the crack control width and the designing method is safe and reliable.
因此,该设计方法的验算公式与其相应的裂缝控制宽度是相辅相成的,设计方法也是安全可靠的。
In this paper, according to the experimental results of 22 beams, we probe into the influence of concrete cover thickness on crack width and crack spacing.
本文通过22根钢筋混凝土受弯构件的试验,探讨了混凝土保护层厚度对裂缝间距和裂缝宽度的影响。
The work mentioned above is helpful to understand width effects and evaluate surface crack with different width and depth.
上述工作有助于全面认识宽度对漏磁场的作用,实现不同宽度、深度的表面裂纹量化检测。
When crack width changes from wide to narrow, the K does not immediately minish, but continuously enlarges first, reduces then, and does not return in original route.
当裂纹宽度从大到小时,K值不是立刻减小,而是先继续增大,然后再减小,并且不是按原路线返回。
Crack width is a most significant parameter for the durability assessment and design of reinforced concrete structures.
锈胀裂缝宽度是混凝土结构耐久性与设计评估的重要参数。
The formula in Code for design of concrete structures (GB50010-2002) can used to estimate the width of crack.
可用《混凝土结构设计规范》(GB50010-2002)的公式估计其裂缝宽度,安全性高。
Based on standard test method ASTM C1550 for fibre reinforced concrete (FRC), a modified round panel test method for the material performance of FRC by measuring crack opening width is presented.
在美国材料试验协会标准ASTMC1550圆板试验方法基础上,提出一种改进的基于裂缝宽度量测技术的纤维混凝土(FRC)材料静定圆板试验方法。
My work can be summarized as follows: (1) According to the characteristics of crack on concrete structure, I realize the width measurement algorithm.
本文主要完成以下工作:1根据混凝土结构裂缝图像的特点,实现了混凝土结构裂缝宽度的测量算法。
However, the evaluating results of statistical method are the static results reflecting the present conditions of CRCP crack width, and influenced remarkably by the individual wider cracks.
而统计方法的评价结果受个别较宽裂缝的影响较大,且为静态结果,只能反映CRCP裂缝宽度的现时状况。
Comparisons between theoretical predictions and experimental results, in terms of crack spacing and crack width, indicate that the proposed model is reasonable.
文中对裂缝间距和裂缝宽度的模型预测结果和试验结果进行了比较,对比结果表明文中提出的计算模型是合理的。
Then, a study on the accuracy of these formulas for calculating crack width is made on the basis of the existing test date obtained from flexural members.
此外,根据国内外大量的受弯构件裂缝宽度试验数据,对这些裂缝宽度计算公式的精度进行了计算和比较研究。
The improved model is proposed for calculating the maximum crack width.
改进了最大裂缝宽度的计算模式。
The width measurement of the main crack The width measurement is based on the skeleton and continuous boundary of crack.
裂缝的宽度测量裂缝宽度测量是建立在对裂缝的骨架和边缘提取基础上。
The polypropylene fiber can effectively control the length, width and number of the drying shrinkage crack of early-age concrete.
聚丙烯纤维可有效控制混凝土早期干缩裂缝的长度、宽度和数量。
The static load test was done on the frame beam strengthened by CFRP with frame joint anchored in different mode, and the bearing capacity, deflection and width of crack was surveyed.
对采用不同梁端锚固方式的碳纤维布加固框架梁进行静载试验研究,在承载力、挠度及裂缝开展等方面进行了综合比较和分析。
By the analysis of average crack spacing, the maximum cracks width, crack height of the reinforced beams. derived a maximum crack width formula for the reinforced beam.
通过对加固梁平均裂缝间距、最大裂缝宽度、裂缝高度等的分析,推导出了加固梁最大裂缝宽度计算公式。
The results are shown that reliability level of the members are sufficient, the guaranteed reliability is higher using the calculating formulas of characteristic crack width of current design codes.
计算结果说明,无粘结部分混凝土构件的正常使用极限状态下的可靠性提高,设计规范的“特征裂缝宽度”计算公式有较高的可靠保证。
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