查询词典 concrete

To study the bond-slip performance between structural steel and concrete, the test concerned eleven short columns with the different configuration, such as cross section dimensions, bond length, concrete strength, thickness of concrete cover and the rate of stirrup lateral, was carried out.

摘要］对11个具有不同截面尺寸、粘结长度、混凝土强度等级、保护层厚度、配箍率的型钢混凝土短柱进行了试验研究。

In order to solve the problem, a number of measures are proposed to be taken:① to brush concrete on the upstream face for seepage control;② to provide an impervious curtain inside the concrete dam;③ to apply strengthening grouting to dam concrete.

经分析认为，应采取多项措施联合处理：①对迎水面混凝土进行表面防渗涂刷；②在混凝土坝体内部钻设一道防渗帷幕；③对坝体混凝土进行补强灌浆。

Our development strategy is"to survive depends on quality and to develop depends on technology quality". we pay much attention to products' quality and take this as our life. at the same time, we always keep technical innovation. we have technical cooperation with teka, sauter and kenile etc. in germany, while we also have technical cooperation on control system with many domestic universities, such as shandong university of science and technology, qingdao university of science and technology, qingdao university of engineering and qingdao university of agriculture. based on our specialization, we have designed more than twenty series and hundreds of models of products, including concrete mixer, dry mortar mixer, concrete mixing plant, dry mortar production equipment, concrete pump hbt, pld batcher, mini excavator and many kinds of small road construction equipments. our company has been obtained more than 30 items of national patent.

公司一贯秉承&以质量求生存，以科技求发展&的发展思路，严把质量关，将质量视为企业的生命，不断推动技术创新，先后同德国teka、索特公司、科尼乐公司多家进行技术合作以及国内很多大学如山东科技大学、青岛科技大学、青岛理工大学、青岛农业大学等高校控制系统技术方面的合作，在专业化的基础上开发出二十几个系列的上百种产品，包括混凝土搅拌机，干混搅拌机，混凝土搅拌站，干混生产设备，混凝土泵hbt， pld配料机，迷你型挖掘机以及各种小型路面施工机械等，先后获得国家30多项专利。

The relationships among concrete shrinkage deformation and elastic modulus of aggregate and cement pasted were analyzed, and the relation between the shrinkage deformation of full-grade and sieved concrete and experimental age was analyzed considering the influence of specimen size to concrete shrinkage.

同时通过分析试件尺寸对混凝土干缩性能的影响，对比研究了全级配与湿筛混凝土干缩变形随龄期的变化规律，结果显示模型计算数据与试验数据吻合良好。

In recent years, as the economic is developing, the buildings are getting higher and higher, and mass concrete baseplate application of the structure is more and more widely, the mass concrete baseplate are often cracked by temperature stress in practice, therefore, research of the mass concrete baseplate will become more and more attention.

随着经济的发展，建筑物高度越来越高，大体积混凝土底板结构的应用越来越广泛，但由于温度应力的作用，大体积混凝土底板的裂缝在工程实践中屡见不鲜，因此对大体积混凝土底板温度裂缝的研究将越来越受到重视。

Field investigations on reinforced concrete structures in Qinghai salt lake region discovered that corrosions of concrete and steel reinforced concrete were particularly serious and universal.

第二章简要介绍了我国盐湖地区的环境气候条件，针对典型盐湖卤水中含有的对混凝土产生物理化学腐蚀的侵蚀性离子浓度，重新划分了盐湖卤水的类型，现场考察了混凝土与钢筋混凝土结构在青海盐湖地区的腐蚀与破坏现状。

The results show that space finite analysis results are close to test ones, bottom chords suffer axial force and large in-plane bending, and the max stress is nearby each middle internode. The max stress of node crossbeams occurs in No.2 bottom flange, and that of internode crossbeams happens in ones lying in the middle of every internode. The concrete slab is in tension at the longitudinal direction, and also suffers bent at vertical loads. The degree of completely-composite model taking part in the combined actions is about 55%, while that of semi-composite model is 42%-43%. The combination of concrete slab and bottom chord increases the degree of floor system taking part in the combined actions, lightens the burden of bottom chord, and reduces out-of-plane bending of node crossbeams especially the ones near bridgehead. Stress and displacement of main truss can be evaluated by a equivalent plane rigid frame in preliminary design, and effective stiffness of bottom chords are composed of original ones and concrete slab, and the concentrated load from deck can be translated into uniform load.

研究结果表明：空间有限元分析结果与试验结果较吻合；下弦杆受到轴向拉力和较大的面内弯矩作用，各节间最大应力出现在节间中点附近；节点横梁最大应力发生在横梁2的下翼缘，节间横梁最大应力发生在位于端节间中部的小横梁上；混凝土板顺桥向整体受拉，并在竖向集中荷载作用下产生弯曲变形；全结合模型大部分节间内的桥面板参与主桁共同作用的程度为55%左右，半结合模型桥面板的参与程度为42%~43%；桥面板与下弦杆结合能够增加桥面板的参与程度，减轻下弦杆荷载，减少节点横梁尤其是靠近桥头横梁的面外弯曲；对桥梁进行初步设计时，主桁杆件的位移与内力可按照1个等效的平面刚架计算，下弦杆的等效刚度由原下弦杆截面和混凝土桥面板截面组合而成，桥面荷载可转化为均布荷载施加。

Then, safety analysis method was constituted considered the typical damage of concrete beam bridge. 5. By amending the reduction rate of loading capacity used in Code for Maintenance of Highway Bridges and Culvers (JTG H11-2004), a new reliable index is presented in the same safety standard to reflect the relation between load and resistance. According to the basic principal of calibration method, the recommended gradation index was computed under various factors such as different load combinations, vehicle operating status and different failure modes. With these calculated numerical values, the calculated reliability indexes standard for the estimation of safety degree of in-service concrete girder bridge members was ultimately obtained.6. Based on the related standards and results on crack and displacement that cannot continue to loading at home and abroad, the evaluation grade of the concrete beam bridge is proposed by analogy.

针对材料和构件损伤对混凝土梁式桥抗力的影响，基于材料和构件层次典型损伤的修正计算公式，在结构既有以及时变抗力评估的概率模型基础上，通过误差传递公式获得抗力统计参数，对抗力进行修正，构成了考虑混凝土梁式桥典型损伤的安全性分析方法。5、依据校准法原理，将《公路桥涵养护规范》(JTG H11-2004)中不同类别承载力下降率转化为修改分项系数，分别计算了轴心受压、轴心受拉、受弯、大偏心受压、受剪构件在各种情况下的可靠指标，根据破坏类型对校准结果进行分析，提出了基于可靠度的公路混凝土梁式桥安全性评定等级。6、基于不能继续承载的裂缝和位移的相关国内外规范和研究成果分析，通过类比提出了混凝土梁式桥不能继续承载的裂缝和位移评定等级界限。

Being from the technique current development level and the usage of it, this paper systemically disuses quite a number of concernments of the technique, for which count much of make MgO, MgO cement and concrete, the thermal and mechanical parameter of MgO concrete, the soundness of the Micro-expansion MgO concrete and the MgO cement construction equipments.

本文从该技术目前的发展水平，从使用MgO微膨胀技术出发，对于该技术关系重大的MgO膨胀剂制备、MgO水泥、MgO混凝土、MgO混凝土热学和力学性能、微膨胀MgO混凝土的安定性问题、以及MgO混凝土施工设备做了系统论述。

Chapter 4 and chapter 5 are about simulation methodology. In chapter 4, the design idea and techniques of implementing intelligent simulation of dam concrete placement system are clarified and the simulation research method of separating experiments from models is introduced. On the basis of the research, the simulation function structure frame of dam concrete placement system is constructed, which makes the simulation software system of dam concrete placement become a general-used and intellectualized simulation study environment in which simulation modeling, experiments and analysis are integrated.

第四章和第五章是仿真方法论，第四章主要讨论实现大坝砼浇筑系统智能化仿真的设计思想与方法，并介绍了仿真实验与仿真模型相分离的仿真研究方法，在此基础上构造出大坝砼浇筑仿真系统的功能结构框架，使得大坝砼浇筑仿真系统成为集仿真建模、实验和分析于一体的通用型、智能化仿真研究环境。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了