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- It was showed that under the transverse tension, high stress concentration and even concrete cracks would appear on the oblique webs of the model. 研究表明,在张拉横向预应力钢束以后,主梁边箱斜腹板中部会出现高拉应力区以及混凝土裂缝。
- This paper analyzes the causations of reinforced concrete cracks and puts forward relevant prevention measures. 本文分析了钢筋砼结构裂缝产生的原因,并阐明了预防措施。
- In the construction of hydraulic tunnel, the engineering quality problem is often caused by concrete cracks and insufficient thickness of roof lining. 摘要在水工隧洞建设中,混凝土衬砌裂缝和顶拱厚度不足是经常发生且十分典型的工程质量问题。
- In this paper shrinkage-compensating concrete is proportionately mixed with SL moderate expansive waterproof agent in order to prevent concrete cracks. 本文介绍了在混凝土中掺入SL微膨胀防水剂,配制补偿收缩混凝土,防止混凝土开裂;以膨胀加强带取代后浇带,实施超长结构连续施工。
- Concrete Crack; Neural Network; Gray Theory; Relational degree Analysis; Crake width forecast. 01混凝土裂缝;神经网络;灰色理论;知识表示模式;关联度分析;裂缝宽度预测
- So updating ideals and planning before construction and impersonal attitude for concrete crack is more important. 主张观念的更新、施工前的策划和对裂缝问题处理的客观态度。
- As to bridge structure, the concrete crack is concentrating representation of bridge bug, and it also is the most familiar disease of bridge. 对于桥梁结构而言,混凝土裂缝是桥梁缺陷的集中表现,也是桥梁最常见的病害。
- This paper analyzes the cause of large concrete crack in the construction engineering, and puts forward preventive measures. 摘要文章分析了建筑工程中大体积混凝土裂缝产生的原因,提出了预防措施。
- This paper analyzes the characteristics of large pump concrete and the cause of Concrete crack, provides corresponding prevention measures. 摘要文章分析泵送混凝土特点及大体积混凝土裂缝产生的原因,提出防治措施。
- The application principle of AEA seamless design construction technology, controlled large area concrete cracks and structural self waterproofing technique have been described through engineering examples from view of theory and practice. 从理论和实践两方面阐述了AEA无缝设计施工技术、控制大体积混凝土裂缝、结构自防水技术的应用原理和工程实例。
- The prestress was applied on the flange deck to improve the ultimate load bearing capacity. When the beam suffered the negative moment, prestressing technique was used to the CFTs to prevent the concrete cracks developing in the CFTs. 在梁的下翼缘可以施加预应力提高极限承载力 ;同时在梁承受负弯矩处可对小径钢管砼施加预应力来缓解砼的开裂 .
- Concrete cracking is one of the reasons for leaking in underground works. 混凝土裂缝是地下工程渗漏的重要原因之一。
- In the nonlinear computation of the spiral case structure of Three Gorge Power Station,damage mechanics is introduced to study the concrete cracks from microcosmic to macrocosmic scope. 采用编制的正交异性三维损伤有限元程序对蜗壳结构进行损伤计算,细致地分析了钢蜗壳不同内水压力时,其外围混凝土的损伤分布规律及应力应变情况。
- This paper analyzes the causes of the common concrete cracks, and sums up the preventive measures for t he temperature-difference cracks, shrinkage cracks, settlement cracks and other kinds of cracks. 分析了混凝土常见裂缝产生的原因,并分别就温度裂缝、收缩裂缝、沉陷裂缝以及其他裂缝的预防措施进行了总结和讨论。
- The way to stop concrete cracking is to bung up small cracks before they enlarge. 抑制混凝土继续开裂的方法是在小裂缝扩大之前把他们填满。
- The construction method of west anchorage of suspension bridge of Yangtse River Egongyan Bridge in Chongqing and technology of anchoring mass concrete is introduced in detail,the main measure protecting from mass concrete crack is given. 详细介绍了长江鹅公岩大桥悬索桥西锚碇的施工方法及锚体大体积混凝土的施工工艺 ,介绍了防止大体积砼产生裂缝的主要措施
- It can be used to improve the concrete cracking resistance and seepage resistance. 具有改善混凝土抗裂能力、抗冲击抗磨耗能力等作用。
- The prevention of liner concrete cracking at tailwater tunnels and measures on different levels cracking are discussed in detail. 水工隧道混凝土衬砌均存在不同程度的裂缝,本文介绍了尾水隧洞衬砌混凝土裂缝预防和不同类型裂缝的处理办法。
- The paper presents a series of anti-cracking measures taken during the construction of mass concrete in hot weathers to prevent concrete cracking. 文章阐述了热天大体积混凝土施工过程中,为防止混凝土裂缝的产生,采取了一系列相应的防裂措施,达到了预期的效果。
- The results show that steel fiber improves obviously concrete cracking and the reinforcing and toughening mechanisms of steel fiber are approached. 试验结果表明,钢纤维对改善混凝土开裂有明显效果,并且还探讨了钢纤维的抗裂、增强机理。