桁板

It is suitable for masts, yards and planking.

它适用于桅杆、帆桁和船壳板。

The deformational mechanisms of shipside in ship collisions are systemically discussed in this paper. The deformation and damage of shipside mainly include the extension of side shell, the crushing of transverse webs and longitudinal stringers, crushing of decks, etc. The deformational mechanisms of side plates acting on various impact loadings and the crushing mechanisms of inner structures of shipside are discussed in this paper.

本文系统地整理和讨论了船侧结构在船舶碰撞中的变形机理，被撞船的变形和损伤主要包括船侧板的拉伸，横向肋框和纵向桁材的压溃，甲板的压溃等，本文分别介绍了船侧板在承受各种冲击载荷时的变形机理以及船侧内部结构的压溃机理。

Here, the dual nonlinear tangental stiffness matrixes of binodal spatial beam element and triangular plate/shell element of 6 nodal DOF to Update\|Lagrange coordinate systems are derived, the incremental equation of virtual work is linearized to simplified calculation,beam\|plate coupling,deviation of principal nodes and subordinated no...

推导了三维桁元、梁元和三角形板壳元在UL描述下的双重非线性切线刚度矩阵，通过对增量形式虚功方程作线性化处理来减少计算量，考虑了梁／杆与板对应节点定位偏差和节点焊接安装误差，进而编制计算程序。

Compared with the result of the soild model, it is found that the two results have great coherence. So it is feasible to take the shell model for numerical analysis of trussed combination arch bridge.

论文最后建立了清水大桥板壳有限元模型并利用该模型对该桥的恒载作用工况进行了数值分析，通过与实体模型的结果对比发现，两种模型的计算结果具有比较好的一致性，因此可以利用板壳模型对预应力桁式组合拱桥进行快速、准确的数值分析。

After being prefabricated, they will be carried to the point, and installed on the bridge. Seated very close to each bridge, prefabrication sheds are responsible for prefabricating girder boards and culvert cover boards. Dadoes are set up according to the number of girder boards. Two joist barrows and one 315KVA power transformer are fixed in prefabrication shed .

进行集中预制后用大型平板运输车运至各桥点进行安装，预制场设在各桥桥头附近，负责预制所有梁板及涵洞盖板，根据梁板数量设置台座，各预制场设龙门桁车2座，预制场安装315KVA 专用变压器一台。

Splices between sections of rolled beams shall be made in a single transverse plane.

组装的钢桁腹板与边缘的拼接，应位于多重横平面上。

In the case of in-plate loads, such as those induced in the deck by longitudinal bending of the hull girder, the beams serve to maintain the deck plating in its designed shape.

在板材装载情况下，例如在甲板上那些由纵向弯曲船体纵桁所诱导的，梁架就用来维持甲板板设计的形状。

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。

Lower part of stem to be of bulbous bow, upper part to be of raked type and consists of girder and plate.

首柱下部为球鼻首，上部为倾斜首柱，由桁材和板组成。

Thesis is divided into five parts, the main contents include: a long beam and truss repair and strength calculation, Liang Lu-board repair, the following box and wing rib repair, box rib injury at the time of small-scale repairs, large-scale box rib injury at the time of repair and a new frame, the positioning rib installation.

论文共分5个部分，主要内容包括：梁和长桁的修理及强度的计算、梁履板的修理、隔框和翼肋的修理、框肋小范围损伤时的修理、框肋大范围损伤时的修理及新框、肋的定位安装等。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。