钢筋结构

Based on the shell element degraded from the continuous body, concrete and configured steels are modeled by the layered shell element, and the vertical steels burdened with added loads are completed by the combined shell element. Then, with the smeared crack model, associated flow rule and Madrid hardening model, the material nonlinearity of the concrete is depicted. The stiffness matrix of nonlinear thin-walled shell element is deduced. As for RC multi-T girders subjected to transverse loads, the properties, such as crack expanding and steel yielding, are studied.

基于实体退化壳单元理论，采用分层单元模拟了混凝土和构造钢筋，采用组合单元模拟了受力纵筋；并利用弥散裂缝模型、关联流动法则和Madrid强化准则等来描述了混凝土的材料非线性，推导了非线性薄壁壳单元的统一单元模式，研究了横向荷载作用下RC多T梁上部结构的裂缝发展和钢筋屈服等性能。

In connection with the application of concrete-filled steel tubular column in the engineering practice in this country at present,a new fashioned connection in framed structure of concrete-filled square steel tubular column with reinforced concrete beam was proposed,being a connection of concrete beam with non-through hidden steel corbel steel tubular column filled with concrete.

结合我国现行钢管混凝土柱在实际工程中的应用状况，提出了用于方钢管混凝土柱-钢筋混凝土梁框架结构的新型连接节点形式非穿心暗钢牛腿方钢管混凝土柱与混凝土梁节点，采用了X型加载试验方案，制作了1∶3的试验模型，进行了低周反复荷载作用下的试验研究，得到了相关的钢筋应力应变发展规律和相应的滞回曲线，通过对试验结果节点破坏的机理分析，提出了进一步的改进措施。

Utilizing plane sectorial domain Hamilton system function via variable substitutes and eigenfunction expansion method, an analytical element is proposed in this paper for the crack analysis of reinforced concrete structures combining the bridging model and Dugdale model. Combined with finite element, nolinear crack problems of reinforced concrete structure can be analyzed.

利用平面扇形域哈密顿体系方程，通过分离变量法及共轭辛本征函数向量展开法，结合Dugdale模型和桥联力模型，推导了钢筋混凝土结构裂纹尖端的解析元列式，将此解析元与普通有限元结合，可用于分析钢筋混凝土的非线性断裂问题。

A further analysis of the structural systems having combination of RC shear-wall with block wall is worked out, calculation of seismic action is performed, a formula for computation of principle of work in coordination between RC shear-wall with block wall is put forward, and the program for computation source is given.

对钢筋混凝土剪力墙—砌块墙组合结构体系又进行了进一步分析，进行了地震作用计算，提出了钢筋混凝土抗震墙与砌块墙协同工作的计算公式，给出了计算源程序。

The corrosion of steel bar in concrete is one of the main reasons that cause the destruction of concrete structures.

混凝土中钢筋的锈蚀是引起钢筋混凝土结构失效的主要原因之一。

After treatment and analysis of 150 domestic test data, probabilistic characteristics of displacement ductility factor of reinforced concrete frame columns and frames fits natural logarithm normal distribution and a functional expression is proposed by a statistical regression.

通过对国内150个钢筋混凝土框架柱和框架试验数据的整理和分析，得出位移延性系数的试验结果服从自然对数正态分布，并回归得到考虑多因素的位移延性系数经验公式，该公式可供钢筋混凝土框架结构抗震设计和评估参考。

Corrosion of reinforcement in concrete is one of the main factors affecting the durability of reinforced concrete structures.

钢筋腐蚀是影响钢筋混凝土结构耐久性的主要影响因素之一，且造成的危害巨大。

Performance of corroding reinforced concrete structures has been studied home and abroad recently.

本文简介了这方面研究的现状，其中包括研究的方法、受腐蚀钢筋混凝土结构的抗弯性能、抗剪性能、钢筋和混凝土的粘结性能、使用荷载作用下的性能和动力性能，并对需要重点加强研究的方面提出了建议。

In the passivated REBAR electrode surface formed by ORCs the grain observed from AFM examination is composed of γ-Fe〓O〓 and Fe〓O〓 0 At+0.7V, the passive film on REBAR electrode formed by single-step polarization is composed of Fe (Ⅲ oxide highly doped by Fe〓. In some areas, small γ-Fe〓O〓 particals or some polymeric structure which contains dioxy and dihydroxy bridging bonds between the iron atoms may also exist in the other region.

通过AFM实验观察到的钢筋电极经循环电位扫描至+0.7V形成的钝化膜中具有的结晶颗粒主要由γ-Fe〓O〓和Fe〓O〓·yH〓O0 阶跃电位形成的钢筋钝化膜在+0.7V下主要是由掺杂了大量Fe〓的三价铁氧化物构成，在某些微小的区域可能存在γ-Fe〓O〓微晶，而在另外一些区域则具有聚合物膜的结构。

The seismic behavior of great size thin wall reinforced concrete pipe columns is discussed through model experimentations and finite element methods in this paper, after taking Air Cooled Condenser system structure of a main factory building of the large capacity power plant as experimentative prototype.

中文摘要：本文以某大型火电厂空冷凝汽器系统支架结构中的钢筋混凝土管柱为原型，通过模型试验和有限元分析，研究了大尺寸薄壁钢筋混凝土管柱抗震性能等问题。

Methods: Five patients with parkinsonism or dystonia were assigned to general anesthesia using an modified endotracheal tube.

本实验依照人体实验之相关规定进行，五位患有帕金森氏症或肌张力异常的病人接受神经立体定位手术。

If you can benefit from this book, it is our honour.

如果您能从本书获益，这将是我们的荣幸。