查询词典 truss

At the guitar's head, the nut is often concealed under a small plastic or wooden plate, fastened with small screws. From the soundhole, the truss rod nut may be directly accessible through a hole in the cross brace, or may be located at the heel block, often accessible only by completely loosening the strings.

如果位于琴头，那么它可能藏在一个被螺丝固定住的用塑料或木头制成的小片里，通过琴头底部的洞直接接触钢筋的螺母，或者钢筋螺母被固定在共鸣洞里琴颈底端的一块木头里，只有把弦全松开才能摸到它。

Based on the column deflection curve method,the paper analyzed the effect of semi-rigid connection to the effective length of compressed web members in the cold-formed thin-walled steel truss.

本文通过柱挠度曲线法，分析了连接半刚性对冷弯薄壁型钢桁架中受压腹杆计算长度的影响。

The cantilever erection method with derrick crane provides a new way for design and construction of long-span suspension bridge with steel stiffening truss girder in the western area of China.

桥面吊机悬臂拼装方案为我国西部地区大跨钢桁加劲梁悬索桥的设计和施工提供了1种新的方法。

Of bridge could be improved Truss lifting tool adopts for derrick mast hoist that had been made by our unit, readymade member will be lifted and positioned. It is of the feature of simple construction equipment and quick construction progress and a potential of popularization.

桁架部分采用自制的人字扒杆吊机作为吊具，将预制的构件吊起进行悬臂拼装就位，施工设备简单，进度快，具有一定的推广潜力。

Based on Artificial Neural Network,the ANN deformation estimatorand ANN shape controller are designed for intelligent truss structures.The currentdeformed state of the structures can be inferred and regulated from a limited numberof on-line measurements and actuations.

基于人工神经网络方法，设计了智能桁架结构的变形估计器和形状控制器，根据系统有限数目的测量值可以估计结构变形并用于形状控制。

Cross plane truss system.2.net rack system consists of quadrangular awls.3.net rack system consists of triangular awls.

平板网架按组成的单元不同可以分为三种体系：①交叉平面桁架，②由四角锥组成的网架系，③由三角锥组成的网架系。

The steel-concrete composite floor system is widely used in large span high-speed railway truss bridges in China. Horizontal bending of crossbeams is a key issue in design.

中国大跨度高速铁路钢桁梁桥大多采用钢－混凝土结合桥面，横梁的面外弯曲是设计中的关键问题之一。

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。

The finite element model included two types of main element: beam element for concrete and truss element for internal unbonded or external tendon. The end nodes of main elements were connected with internal constraints named MPC in ABAQUS. Spring elements with very large stiffness were set up at the place of the deviators of externally prestressed beams, or along the span with relatively little space of unbonded internally prestressed beams. The modified Riks method is utilized to trace the entire structural response of beams prestressed with unbonded tendon from zero to ultimate loads. The reliability of the analysis model is verified by analytical results of typical test beams in comparison with experimental ones.

该有限元模型由两类主单元组成，即混凝土梁单元和体内无粘结或体外预应力筋桁架单元；主单元的端部节点用ABAQUS的内在约束MPC连接；在体外预应力梁的转向块处，或沿体内无粘结预应力梁全跨并以比较小的间隔设置刚度足够大的弹簧单元。

And the security analysis is the finite method which is the space grid-frame method for analyzing falseworks and the space truss method for analyzing grid segment.

分段吊装的工况安全性分析利用ANSYS程序，详细分析了多种工况条件下，网架结构分段施工的安全性。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。