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井字
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  well-shaped
     Realization of CAD system of optimization design of well-shaped beam structure
     井字梁结构优化设计的CAD系统
短句来源
     Several notable problems in reinforced concrete well-shaped beam design
     钢筋混凝土井字梁设计中应注意的几个问题
短句来源
     The following article discusses several notable problems in reinforced concrete well-shaped beam design from structure of reinforced concrete well-shaped beam floor,well-shaped beam compression calculation and design of steel bars placing,which to give a reference for construction designer.
     从钢筋混凝土井字梁楼盖的构造、井字梁受力计算及配筋设计等几个方面探讨了钢筋混凝土井字梁设计中应注意的几个问题,以供工程设计人员参考。
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  “井字”译为未确定词的双语例句
     DESING & CONSTRUCTION OF LONG-SPAN PRESTRESSING WAFFLE FLOOR(37.8 m×36.8 m)
     37.8m×36.8m大跨度预应力井字楼盖的设计及施工
短句来源
     Qualitative representation and reasoning of topological relations and directional relations are given in detail respectively. And qualitative reasoning of directional relation based on Space with Neutral Zone, with the theorem that is satisfied, is also presented.
     论文分别讨论了拓扑关系(Topological Relations)定性表示与推理,以及方向关系(Directional Relations)定性表示与推理,特别是基于井字空间的方向关系定性表示与推理方法,给出了这种推理方法满足的定理。
短句来源
     A kind of ring-spoke floor structure is presented and its mechanics characteristic is illustrated by comparing with #-shape beam structure,at the same time,application of a project is introduced,and it can give a reference to the design and research further of this structure.
     介绍了环梁—辐射梁楼盖结构的组成形式 ,通过与井字梁楼盖受力性能的比较 ,阐明了环梁—辐射梁楼盖结构的受力特点 ,介绍了某环梁—辐射梁楼盖实际工程的应用情况 ,为环梁—辐射梁楼盖的设计和进一步研究提供了参考。
短句来源
     The Application of Computer-Aided Design(CAD) to Design a Well-Form Beam
     计算机辅助设计(CAD)在井字梁设计中的应用
短句来源
     The design of a round roof garden with a diameter of 42.2m and the total loads being about 20kN/m~2 is introduced. After comprehensive comparison,the cross-grid steel beam structure of large span with welded H section was used.
     某圆形露天屋顶花园直径42.2m,作用的荷载为20kN/m2,经综合考虑比较,决定采用大跨度实腹焊接H型钢井字梁承重屋盖。
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  相似匹配句对
     A Preliminary Study on the Origin and Development of the Character “Jing”(井)
     浅谈“的起源与发展
短句来源
     THE ANALYSIS OF REINFORCED CONCRETE CAISSON-BEAM
     鋼砼梁的計算
短句来源
     Blind Shaft
     盲
短句来源
     Word Puzzle
     填游戏
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     Textual Research on Chinese Word of the Initial of the First Character and the Final of the Second
     切音
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  well-shaped
As a result, a gray humus horizon with well-shaped fine granular and coprolitic structure has been formed within the body of the former plow layer.
      
Many of such optimization criteria have been suggested for chromatograms in which all or a number of well-shaped peaks need to be separated.
      
Well-shaped peaks were obtained for trace organic acids using dilute sulfuric acid as mobile phase.
      
In addition, the well-shaped hysteresis loop also showed that the film had a well performance in ferroelectric.
      
Selenosulphate anion yields in alkaline solutions of 0.2 Mol Na2CO3 and 0.2 Mol Na2SO3 a well-shaped polarographic wave, which makes possible the determination of tetravalent selenium within the concentration range of 10-5 to 10-3 Mole.
      
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Two methods for analyzing caisson-beams are introduced in this paper.One is the well-known method of redundant forces. The author has simplified this methed by using couples of redundant forces to set up a typical equation and pointing out the rule that the matrix of the coefficients of simultaneous linear equations which are organized from the expansion of that typical equation. This method can be easily solvd when the number of unknown redundant forces, or that of equations, is less than 3 or 4; but it will...

Two methods for analyzing caisson-beams are introduced in this paper.One is the well-known method of redundant forces. The author has simplified this methed by using couples of redundant forces to set up a typical equation and pointing out the rule that the matrix of the coefficients of simultaneous linear equations which are organized from the expansion of that typical equation. This method can be easily solvd when the number of unknown redundant forces, or that of equations, is less than 3 or 4; but it will be difficult when the number is more than that. In order to solve this difficulty the author suggests another kind of method of which the essential principle is mentioned in the following.Supposing that the distance between the beams is sufficiently short in comparing with their spans, we can set up a partial differential equation for its deffiection W, as we often do in the theory of elasticity. In this way we can solve it with its boundary conditions of simple supporting by sine series. From this we can easily get the formulas of bending moments, shears and twist moments of each beam by partially differentiating the function of deffiection. The result of the calculation proves that it quite agrees with the method of redundant forces when the distance between beams is no longer than 1/5 of their spans.There are some tables given in this raper for practical use.

本文介紹了計算井字梁的兩种方法。 第一种方法是按冗力送来計算的。本文利用了成对的未知力以建立冗力法的典型方程,指明了由典型方程所組成的联立方程中其系数排列的規律,从而簡化了建立方程的过程和減少錯誤的机会。冗力法仅在联立方程的数目不多于3至4时是相当方便的,若未知冗力过多,解算过程便異常繁重。为此,笔者提出了下述的第二种方法。 当梁的間距比梁的跨度为一較小的数值时,可应用彈性力学所常用的方法,建立一个关于井字梁撓度曲面的偏微分方程。以符合簡支边界条件的正弦级数求出撓度后,便可依微分关系求出各梁的弯矩、切力及扭矩。鈇摩辛柯在其著作中(見[3]§37)討論向異性板的弯曲时,亦曾附帶地提及本法的可能性。本文給出了全部計算公式及为实用的目的而制訂了各种数表。計算的結果表明当梁間距不大于跨度的1/5时,本法与冗力法的結果相差無几,而本法在应用上的簡便笑为任何方法所不及。

The finite difference equations are applied in this paper for the analysis ofcaisson-beam, which is composed of two intersecting sets of parallel beams,namely the longitudinal beams and the transversal beams. Two cases of caisson-beam have been discussed in this paper. In the first case, all the 1ongitudinalbeams are arranged in equidistance and have the same stiffness, all the trans-versal beams are also arranged in equidistance and have the same stiffness. Byusing the method of redundant forces and deformations,...

The finite difference equations are applied in this paper for the analysis ofcaisson-beam, which is composed of two intersecting sets of parallel beams,namely the longitudinal beams and the transversal beams. Two cases of caisson-beam have been discussed in this paper. In the first case, all the 1ongitudinalbeams are arranged in equidistance and have the same stiffness, all the trans-versal beams are also arranged in equidistance and have the same stiffness. Byusing the method of redundant forces and deformations, we obtain a set ofsimultaneous partial finite difference equations, where the deflections of the jointsand the bending moments of longitudinal beams and transversal beams at jointsare unknown functions. The finite sine series are used in the solution of theseequations. In the second case, all the transversal beams are arranged inequidistance and have the same stiffness, while the longitudinal beams arearraseed in arbitrary distances and have different stiffness. By using the methodof redundant forces, we obtain a set of simultaneous ordinary finite differenceequations, where the bending moments of the longitudinal beams at joints areunknown functions. The general method for solving these equations has beendiscussed.

本文用差分方程解交叉梁系(井字梁)。交叉梁系中的一组平行梁称为横梁,而另一组平行梁称为纵梁。本文解两种交叉梁系。第一种是所有横梁断面惯性矩相同、间距相等,所有纵梁断面亦然。用结构力学中的混合法,取结点挠度和横梁、纵梁在结点的弯矩为未知数,得到一个联立偏差分方程组。解这个联立偏差分方程组采用了有限三角级数,并分成三种情况讨论它们的解,即四边简支,两对边简支其他两对边任意支承,四边任意支承等。第二种交叉梁是所有横梁断面惯性矩相同、间矩相等而纵梁的断面惯性矩、间距则是任意的。用结构力学中的冗力法,取纵梁在结点处的弯知为未知函数,得到一个联立常差分方程组。本文讨论了这个方程组的一般解和纵梁两端为简支时的有限三角级数解。

This paper summarizes the design and construction of unbonded partially prestressed concrete two-way floor grillage girders used in the multi-functional hall in the east bulding of Beijing Scientific and Technological Center. This paper also describes the rationality and economic effect of the 27m span unbonded partially prestressed concrete grillage girders and introduces the resolution of the main structural problems in design by choosing feasible structural system and comparison of schematic designs. During...

This paper summarizes the design and construction of unbonded partially prestressed concrete two-way floor grillage girders used in the multi-functional hall in the east bulding of Beijing Scientific and Technological Center. This paper also describes the rationality and economic effect of the 27m span unbonded partially prestressed concrete grillage girders and introduces the resolution of the main structural problems in design by choosing feasible structural system and comparison of schematic designs. During construction, the elastic compressibility of girder, the loss of prestressing and the camber of girders are observed and measured. In conclusion, suggestions for design have also been proposed.

本文为北京科技活动中心东馆多功能厅楼层无粘结预应力砼井字粱的设计、施工总结。文中通过结构选型和方案比较,论证了27m跨度无粘结预应力井字梁的合理性和经济效果,介绍了设计上对主要结构问题的处理和具体构造,施工过程中对梁的弹性压缩值、预应力损失值以及梁施工反拱值进行了现场测试,并且提出了几点看法和建议。

 
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