查询词典 safety arch

Safety of arch dam is what engineers are concerned about.

拱坝的安全度是工程人员关心的主要课题。

A finite element iteration method of safety factor against sliding of the abutment is presented to study the stability of Shuanghe arch dam abutment ,and the safety factor against sliding of the abutment is obtained.

采用坝肩抗滑稳定安全系数的有限元迭代法，通过三维有限元计算，研究了双河拱坝坝肩岩体的稳定性，得到坝肩岩体的抗剪安全系数，在此基础上，进一步分析加固后的坝肩稳定性。

On the basis of the exact stress and strain analysis of the arch dam and foundation system, it is possible to optimize the shape of arch dam in order to meet the demand of safety and economy in engineering design.

在对拱坝-地基系统进行准确的应力应变分析的基础上，可以优化拱坝体型，使工程设计达到安全、经济的要求。

Combined with the construction of Shuangtan Bridge Wu-Feng freeway,it introduces the successful finish the suspension construction technique of large-tonnage arch ring box by using the cable suspension steel reinforced concrete arch ring,and puts forward the safety program that should attention in construction.

结合巫奉高速公路双潭大桥施工，详细地介绍了采用缆索吊装钢筋混凝土主拱圈，成功地完成了大吨位主拱圈的吊装施工技术，并提出了施工中应注意的安全事项。

I Arch Bridge Pier through the current design, a better understanding of the design of the arch bridge, we should be in accordance with applicable, the economy, safety and proper care for the principles of aesthetic design, the basis of these principles in light of the actual situation and the specific reasonable design.

我通过此次拱桥墩台设计计算，进一步了解在拱桥的设计中，我们应按照适用、经济、安全和适当照顾美观的原则进行设计，根据这些原则，结合实际情况，具体地合理地进行设计。

4Based on the analysis above, a local finite element model of the united-arch-feet three-span continuous through type bow-string arch bridge is established and analyzed. The simplification of the external force and the boundary displacement, the internal relation between local analysis and whole analysis, the analytic method of partial nodes are discussed. Suggestion is made for the design and construction of this kind of bridges, insuring the structure safety.

在静力分析的基础上，对三跨连续下承式系杆拱桥的拱脚结合部位进行局部应力分析，探讨了局部节点分析的外力和位移边界条件的简化，局部分析和整体分析的内在联系，局部节点分析的方法等，避免设计的盲目性，对今后此类桥梁的设计、施工提供建设性的意见和建议，确保结构安全。

The methods of stress and strain analysis, failure analysis and safety evaluation for high arch dam in available specification and studies are reviewed in this paper. The main deficiencies for these methods are: the failure modes are not taken into account in failure analysis and safety evaluation, the regimes of failures are not clearly defined, the related methods and criterion are not so reasonable.

在总结高拱坝应力变形分析、破坏分析和安全度评估的现行规范及现有研究方法的基础上，指出这些方法存在的主要问题是：在进行破坏分析和安全度评估时没有考虑拱坝的破坏模式，破坏分析的层次不够明确，分析方法的建立和破坏判据的确定缺乏理论依据。

The arch dam is a sort of space shell structure with complicated shapes. The stress level of dam body and the stability condition of abutment rock are the two key indexes to evaluate the safety of arch dam.

拱坝是一种外形复杂的空间壳体结构，坝体的应力水平和坝肩岩体稳定状况是评价拱坝安全性的两个重要指标。

The arch dam shoulders anti-slides stable and the distortion stable question initiates the arch dam safety incident\'s primary cause, is also one of dam area key project geology questions.

拱坝坝肩的抗滑稳定和变形稳定问题是引发拱坝安全事故的主要原因，也是坝区关键工程地质问题之一。

Based on the efficient approach developed above, cases of foundationinhomogeneity with stiffness varying according to an exponential function along the radialdirection, and cases of foundation inhomogeneity with stiffness discontinuity and with weakinterlayer strata on the earthquake response of concrete arch dams as well as gravity damswere analyzed. It is found that taking into account the effect of foundation inhomegeneity forthe earthquake safety assessment of concrete arch and gravity dams has great significance.

在以上理论的基础上，本文充分利用比例边界有限元法能够模拟非均匀无限域的优点，合理地提出了重力坝、拱坝的非均匀无限地基模型，分别研究了地基材料弹性模量沿深度按指数变化的无限不均匀地基和地基中存在断层或软弱夹层时对重力坝和拱坝的地震响应影响。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。