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  mid-span
     Analysis showed that concrete cracking would change distribution law of shear lag effect, and its effect is small on the effective width coefficient of flange at mid-span, its effect is big on that at mid-supported section.
     分析表明混凝土开裂将引起连续箱梁剪力滞效应分布规律发生变化,且混凝土开裂对跨中截面翼缘有效分布宽度系数的影响较小,对中间支座截面的影响较大。
短句来源
     Under the initial tensioning stage,end tensioning stage and secondary dead load,the stresses of the whole beam are analyzed. The stress fluctualions and distributions of the mid-span section are presented against varations in prestressed tensioning.
     箱梁采用后张法施工工艺,分别以预应力初张拉阶段、预应力终张拉完成、二期恒载作用为分析荷载工况,计算了箱梁跨中截面应力,给出在施工过程中箱梁跨中截面的应力随预应力张拉的变化及分布情况。
短句来源
     Finite Element Analysis of the Mid-span Cross-section Stresses of Double-track Railway Box Beams in the Construction Phase
     双线铁路箱梁施工阶段跨中截面应力的有限元分析
短句来源
     The lateral vibration frequency of PCT beam mid-span is obviously on the low side and is only 40—50 percentage of the reference value.
     PCT梁的跨中横向振动频率明显偏低,只有参考值的40%~50%;
短句来源
     Stress Calculation for Horizontal Vessels with Double Saddles in Which Structure and Loads Asymmetric to Mid-span Section
     结构和载荷相对于跨中截面非对称双鞍座卧式容器壁中的应力计算
短句来源
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  mid span
     but if the stiffness of the beam is calculated as under the short-term combined action of loads instead of using the method of article 5.3.5 GBJ10-89, the measured and the calculated values of the total deflection at midspan of the beam are close to each other.
     如不按GBJ10-89第5.3.5条而采用荷载短期效应组合作用下计算挠度时的刚度,则梁跨中总挠度计算值与实测值较为接近。
短句来源
     The results show that the differences between the measured values and the calculated values of the total deflection at midspan of the beam are quite big when the stiffness of the beam is calculated according to the method specified in article 5.3.5, GBJ10-89 for obtaining the value of camber due to the action of prestressed bars;
     结果表明:在计算梁因预应力筋作用而产生的反拱值时若梁的刚度按GBJ10-89第5.3.5条计算(即刚度取EcIo),则梁跨中总挠度计算值与实测值相差较大;
短句来源
     Taking simply-supported T-beam having both supports with 15.6 and 15.6m spans as example,theoretical analysis and calculation demonstrate that while heightening mid span's bearing strength,this method lowers the shear resistance of beam at intermediate support.
     以跨径为15.6m+15.6m的两跨简支T梁为例,通过理论分析计算表明,该方法在提高跨中抗弯承载能力的同时,却降低了中间支点处梁的抗剪承载能力。
短句来源
     A Rational and Simple Method for Calculating Peeling-off Stress in Concrete Cover of Midspan of FRP Strengthening RC Beams
     合理简单计算FRP加固混凝土梁跨中保护层剥离应力的新方法
     The results of the testing indicate that the lateral vibration amplitude at midspan of the beam exceeds the limit value,the beam can- not meet the requirements for the freight trains running at a speed of 120 km/h,and the vertical and lateral rigidity of the beam should be raised.
     结果发现跨中横向振幅超过限值,不能满足120km/h货车运行,需要提高该梁的竖向和横向刚度。
短句来源
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  “跨中”译为未确定词的双语例句
     comparing dynamical response of middle bridge stride on vehicle passing bridge and on equivalent moving loads,the displacement is same but the velocity and the acceleration are different;
     车过桥时桥梁跨中动力响应与等效移动荷载作用下桥梁跨中动力响应比较,桥梁跨中的位移基本相近,速度和加速度则不同,等效移动荷载作用情况下的数值比较大;
短句来源
     Based on the interface slip of the simply supported steel and concrete composite beams, the deformation differential equation of steel and concrete composite beams is established,and the calculating formulae of the deformation are proposed for different loading cases by theoretical analysis.
     考虑交接面相对滑移对钢与混凝土组合梁的变形影响 ,利用弹性分析理论建立了钢与混凝土简支组合梁的变形微分方程 ,得到了跨中集中荷载、均布荷载及对称集中荷载作用下的钢与混凝土组合梁的变形计算公式
短句来源
     The Yangming Bridge in Ji'an is 1 744.9 m in total length,of which the main bridge is designed as a 5-span half-through concrete-filled steel tube tied arch bridge with span arrangement(36+138+188+138+36) m.
     吉安阳明大桥全长1 744.9 m,其中主桥为(36+138+188+138+36)m五跨中承式钢管混凝土系杆拱桥。
短句来源
     the maximum displacement of bridge was not at the middle, and the displacement responds of middle span is less than side span;
     全桥的最大位移并不发生在中跨跨中,且中跨跨中的位移响应没有边跨大;
     The attenuation of elastic modulus of Steel Fiber Reinforced Prestressed Concrete Slabs(SFRPCS) with different steel fiber contents(0%、1%、2%) and under different stress levels(0.80、0.85) is investigated through flexural fatigue experiments.
     对三种不同钢纤维掺量(0%、1%、2%)的预应力钢纤维混凝土板在不同应力水平(0.80、0.85)下的疲劳弹性模量衰减规律进行研究,得到了预应力钢纤维混凝土板跨中下表面弹性模量衰减曲线以及同钢纤维掺量、同应力水平的跨中上表面弹性模量衰减曲线。
短句来源
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  mid-span
These source terms are determined using the velocity triangles and a row-by-row representation of the blading at mid-span.
      
Time-dependent data were obtained from thirty miniature pressure transducers and three hot film gauges situated at the mid-span of the wing.
      
The rotor and stator blade elements loss at mid-span approximately equals two-dimensional cascade loss, when the data of probes exposed to strong flow unsteadiness have been corrected.
      
An electromagnetic shaker is used to apply a steady-state harmonic excitation to the ulna near its mid-span and measurements of the complex driving-point impedance are made.
      
Starting with a localized reduction ofEI at the mid-span of a simply supported beam, damage modelling is done for a typical steel beam element.
      
更多          
  mid span
A 3-D computation shows that a secondary vortex generated in suction surface mid span interacts to reduce the tip leakage vortex that initiates the stall.
      
On the other hand total pressure loss in the wake in mid span region is less with backward sweep, which favours its application here.
      
It appeared that the blade inlet angle of the original impeller design was too excessive at mid span, causing best cavitation performance to occur at 160 percent of the rated flow.
      
According to the design requirements, the bridge must be capable of safely carrying a 6-kilogram mass placed on the structure at mid span.
      
After applying the load, a reading of mid span deflections was taken every 24 hours for the first 10 days.
      
更多          


On the basis of the finite element method, a nonlinear analysis of reinforced concrete flexural members is presented in this paper.The nonlinearity of behavior of concrete, continuosly changing character due to crack propagation under monotonically increasing loads, effect of bond between steel and concrete were taken into account. During the analysis, concrete and tension steel were divided into triangular elements; compression steels and stirrups were divided into bar elements while the bond between concrete...

On the basis of the finite element method, a nonlinear analysis of reinforced concrete flexural members is presented in this paper.The nonlinearity of behavior of concrete, continuosly changing character due to crack propagation under monotonically increasing loads, effect of bond between steel and concrete were taken into account. During the analysis, concrete and tension steel were divided into triangular elements; compression steels and stirrups were divided into bar elements while the bond between concrete and tension steels were analysed with the help of spring linkage elements.We have developed a computer program that can be used to calculate the complete behavior, from zero load until failure, of a reinforced conrete flexural member under monotonically increasing loads.Some reinforced concrete simply-supported beams with rectangular section, subjected to 2-point symmetrical transverse loading were calcutatad by means of this program.Computed deflections, crack patterns, ultimate loads and the failure mechanism show reasonable agreements with test results.

本文用有限元法研究钢筋混凝土结构的非线性性能。编制了受弯构件的计算程序。配合钢筋混凝土梁的抗剪试验,对跨中承受两点对称集中荷载的矩形截面简支梁,借助719机进行了全过程计算。计算所得的裂缝开展图、挠度及极限破坏荷载值等与试验结果符合较好。

In this paper according to earthquake-damage analysis a pattern of the dynamic calculation, which must couple with the superstructure and the substructure in regard to the beam bridge as a whole,has been proposed. The rule of earthquake-damage is explained rationally.

我国《公路工程抗震设计规范》、《铁路工程抗震设计规范》、《日本桥梁抗震设计规定》都按单梁单墩互不联系的动力计算图式进行梁桥抗震计算。按照这一图式,无法解释震后梁墩相对位移的连续性和周期性;无法解释等跨、等墩高的梁桥,在跨中部位墩身震害较重的规律;不能解释有高、低墩的桥,高墩受到严重破坏的规律;不能解释上部结构出现的扭转位移、墩身的扭转和支座的扭转破坏。本文通过震害分析,认为应该将全桥视为一个整体,根据上下部相互偶联情况,将全桥作为一个总体来确定它的动力计算图式,并根据这个图式获得的结论比较合理地解释了上述震害规律。

Based on the shear tests of 18 concentrated loaded reinforced concrete restrained beams without web reinforcement, the general rule of the shear strength of such beams was investigated. It was found that the shear strength varies with shear span ratio and moment ratio, that is in the same span the moments occurred in opposite directions would influence the shear resistance of the beam. The formula for computing the shear strength of reinforced concrete restrained beams without web reinforcement was derived in...

Based on the shear tests of 18 concentrated loaded reinforced concrete restrained beams without web reinforcement, the general rule of the shear strength of such beams was investigated. It was found that the shear strength varies with shear span ratio and moment ratio, that is in the same span the moments occurred in opposite directions would influence the shear resistance of the beam. The formula for computing the shear strength of reinforced concrete restrained beams without web reinforcement was derived in this paper.

本课题通过18根无腹筋钢筋混凝土约束梁的抗剪试验,研究了无腹筋钢筋混凝土约束梁的抗剪强度随剪跨比m和弯矩比n变化的规律,即剪跨中反向弯矩对抗剪性能的影响。提出了适用于无腹筋钢筋混凝土约束梁的抗剪强度公式。

 
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