缘梁

The assessment formula for shear capacity was established as well, and in which various impact factors of shear strength was considered comprehensively.3. Directed against the main forms of transverse connection in concrete beam bridges, model test and finite element analysis were carried out to find the impact laws of damage on concrete T-beam bridges, in which the three ways of hinged joint, flange rigid connection and cross slab rigid connection were considered. Transverse distribution and degenerate state of transverse connection were studied under various damage conditions. Based on the analysis of test and simulation results, the rule of live load adjustment coefficient of T-beam bridge was put forward, as well as the calculation formula.4. In view of the influence of the damaged transverse connections to load effect, the load effect model was amended by live load adjustment coefficient.

依据损伤出现频率与重要性等级，提出典型损伤混凝土梁式桥按体系损伤、构件损伤和材料损伤三个层次进行评定的原则。2、基于构件和材料层次损伤评估研究成果，对比分析损伤机理和适用条件，提出了《公路钢筋混凝土及预应力混凝土桥涵设计规范》(JTG D62-2004)抗弯承载力修正计算公式、抗剪承载力修正计算公式以及综合考虑抗剪强度影响因素的抗剪承载力评定公式。3、针对混凝土梁式桥主要横向连接形式，分别按铰结、翼缘刚接和横隔梁刚性连接损伤对T桥梁桥承载能力的影响进行了模型试验和有限元分析，研究了不同损伤工况对T梁桥荷载横向分配的影响及横向连接状态退化情况。

A steel joist or girder with short flanges and a cross section formed like the letter I.

i形金属横梁，工字梁由短翼缘和一个十字部分做成象字母i的钢制托梁或主梁

Top and seat angle connections is a typical semirigid beam to column connection.

上下翼缘角钢梁柱节点是一种典型的半刚性梁柱节点。

Continuous beam models with spring supports were set up to model end-plate connections. By comparing the results from tests with those from model analysis, the following conclusions can be drawn: during loading process, the neutral axis moves from the centroid axis to compression zone, not exceeding the center line of bolts inside the compression flange; ultimately, the tension flange and end-plate can be simplified as T-stub on the assumption that the axial forces of bolts in tension zone are equal to each other.

理论计算系建立带弹性支座的连续梁模型模拟端板连接，将模型计算结果与试验结果比较分析，结果表明：加载过程中，螺栓群中和轴逐渐从其形心轴向受压区移动，但不超过受压翼缘内侧螺栓中心线；极限状态下，受拉翼缘和端板可简化为等效T型件。

It is found that the design of reinforce-beam section dog-bone connection can transfer the yielding joint from flange welds to parent metal zone, which possesses better plasticity and avoid yielding joints in weak welds. This design also enables beam flanges to dissipate earthquake energy more effectuality and protects weak welds.

在弹性、弹塑性有限元分析的基础上，对狗骨式节点和翼缘增强狗骨式节点进行了承载能力对比分析，结果表明：翼缘增强狗骨式节点设计可以将梁柱翼缘焊缝的塑性铰有效的转移到塑性好的母材区域，避免了在薄弱的焊根部位形成塑性铰，保护了韧性较差的焊缝。

In this paper, Shenyang Fumin Bridge main girder to carry out innovative design of the traveling carriage, Based on the similar design of traveling carriage , adopted under the former anchor beam arc settings to resolve the fate of the plane rotation problem , makes the main truss rod assembly by universal application of the cradle of the space cable plane cable-stayed bridge girder construction.

摘 要：本文对沈阳市富民桥主梁的施工挂篮进行创新设计，参考同类挂篮的成功设计思路的基础上，通过将前锚梁下缘设置弧形来解决索的平面转动问题，使得主桁由万能杆件拼装的挂篮应用于空间索面的斜拉桥主梁施工中。

Contact elements are set between end plate, angles, T-stub and column flange, screw cap and neighborhood plane, bolt bar and hole.

分析中，建模时端板与柱翼缘，角钢和T形连接件与柱翼缘和梁翼缘，螺栓头与相邻板件间，螺栓杆与孔壁间都设置了反映边界状态的接触单元。

When H-shape is widely applied in the framed column, there is no rule for design of column flange backing in the case that the thickness of the end plate, which is given by the tension of the bolt, is larger than the thickness of the column flange which the beam is connected to, while the column section can not be changed.

在H型钢普遍应用于框架柱时，当根据螺栓所承受的拉力计算出的梁端板厚度比与其连接的柱翼缘部分的厚度大时，且无法更改柱截面的情况下，柱翼缘部分的补强设计无据可依。

It is found that the design of dog-bone connections can transfer the yielding joint from flange welds to parent metal zone, which possesses better plasticity and avoid yielding joints in weak welds.

本文在弹塑性有限元分析的基础上，对普通节点和狗骨式节点进行了耗能能力对比分析，结果表明：狗骨式翼缘削弱设计可以将梁柱翼缘焊缝的塑性铰有效的转移到塑性好的母材区域，避免了在薄弱的焊根部位形成塑性铰，保护了韧性较差的焊缝。

A new anchorage system for girder to obtain pretension stress at section top-edge in middle of span is shown. Based on the research of bi-prestressing beams inside test-room and the test of the prestress bar character, method for calculating the full size gird and choosing section are proposed. A new-style corrugated pipe which is shown in the paper is used, to solve the transformation of compressed thread bar and the contradiction between loss of friction resistance and pumping in pipe.

本文通过大量的试验及研究分析，提出了双预应力梁跨中上缘获得预拉应力的新的传力锚固体系；通过对室内双预应力混凝土小梁的研究，检测了预压钢筋的受力性能和预压过程中的某些影响参数；提出了足尺梁计算方法和截面、跨径选择方法；研制了新型哑铃型波纹管，很好地解决了预压钢筋变形、摩阻损失和管道压浆之间的矛盾；通过对30？

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。