板梁

This paper introduces structure of waveform steel web prestress concrete box girder and construction method for several bridges.

介绍了波形钢腹板预应力混凝土箱梁的结构和几座桥梁的施工方法。

Research of slab girder pole pier structure in open area is one of pioneer work in harbor engineering.

开敞域桩基梁板结构码头的研究是当前港工领域的前沿课题之一。

According to thermo-elastic-plastic theory, the simulation of welding good-sized steel box-beam is carried out.

本文根据热弹塑性理论，对大型厚板箱形梁对接焊的焊接过程进行了仿真。

In order to meet the requirements of process, the magnetic hanging girder bridge plate piler was designed.

为满足工艺要求，设计了电磁挂梁桥式垛板机。

Secondly, the influence of the length a and the width b of side-board on outer moving of plastic hinge of with beam-end horizontal haunch connections were conducted.

2研究了侧板长度a和宽度b等参数对梁端翼缘扩大型节点塑性铰外移的影响。

According to the studied results at present, the studied objects are mainly thin plate and beam about sound radiation mode, a method computed sound radiation mode of complex structure is presented in this dissertation, according to the results of the previous two chapter, a theoretical method to solve acoustical radiation mode and acoustical radiation efficiency of complex structure by boundary element method and acoustical radiation theory is posed, the acoustical radiation power is expressed as a Hermitian quadratic form, while the radiation modes is determined by general eigenvalue decomposing, and then the radiation efficiency is computed via the orthodoxy of radiation modes with regard to impedance matrix and average velocity matrix; lastly, the validity of the method is proved by pulsating sphere and radiating cube with analytical results. According to results of the form three chapter, the structure sound radiation sensitivity is studied in detail, the sound radiation power of structure can be expressed as positive Hermitian quadratic form, the sound radiation sensitivity can be expressed as two parts by partial differential with respect to design variable, which are sensitivity of boundary velocity and impedance matrix, combined with the theory of FEM and BEM, the structure sound radiation can be translated to the analysis of structure dynamic sensitivity and impedance matrix sensitivity. The theory posted in this dissertation is tested by the FEM software ANSYS and the software AAS programmed by author.

在前几章的基础上，通过结构声辐射的模态理论对结构的声辐射的机理进行了深入地探讨，针对目前声辐射模态的研究对象主要是简单的板和梁类结构，提出了一种计算复杂结构声辐射模态的方法，利用前两章研究所得的结论，将边界元方法与广义特征值的理论结合起来研究了复杂结构的声辐射模态与声辐射效率，先将结构的声辐射功率表示为一个正定的厄米特二(来源：ABb7C论文0909网www.abclunwen.com)次型，运用广义特征值分解求解了复杂结构的声辐射模态，然后利用声辐射模态关于阻抗矩阵与均方速度耦合矩阵的正交性，求解了复杂结构的声辐射效率，最后用具有解析解的脉动球与辐射立方体验证了该方法的有效性。

Results: MR examination of bone contusion were mostly less than two weeks, but a few patients were longer than one year: STIR, TIWI were more sensitive lesion detection series in hone contusion (100% and 95.7%). Bone contusion mostly occur at knee, and lesions mainly distributed in the margin area of articular (69.8%), in superior portion of vertebral body(74.l%). Bone contusion following-up showed a line-like hyperostosis and osteosclerosis in contusion area. Histological manifestations of bone contusion were local trabecular micro fractures, edema, hemorrhage and injury of fat tissue.

结果：1多数骨挫伤MRI检查在两周内完成，少数病人时间超过1年；2检出骨挫伤敏感的MRI序列为STIR及T1W/I（100%及95.7%）；3膝关节是骨挫伤的好发部位，病灶主要分布于骨边缘区(69.8%)，在脊柱主要分布于椎体上缘终板下(74.1%)；4骨挫伤影像随访提小病变区出现线状骨质修复，骨髓水肿吸收；5骨挫伤病理为骨小梁显微骨折，骨髓水肿、出血和脂肪损伤。

Steel I-beam and concrete deck slab perform together by the shear connectors, therefore the difference between the heat properties of steel and concrete effects as one of the main reasons for the emergence of temperature internal forces.

工字钢与混凝土行车道板由剪力键连接起来从而共同工作，因而钢材与混凝土热性能的差异是导致叠合梁斜拉桥产生温度内力的一大原因。

A metal plate used to strengthen a joist .

用于加固托梁的金属板。

The point of an anvil.A triangular metal bracket used to strengthen a joist.

角撑板一种三角形的金属托架，用来加固地板托梁

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。