钢筋

In this paper,a research on the reinforced concrete full-scale three-span continuous slabs under fire was carried out,which underwent the normal loading.

引 言钢筋混凝土结构目前是我国建筑工程中应用最为广泛的结构形式，对钢筋混凝土结构抗火性能及灾后处理的研究是非常有实际意义的。

It applies to steel processing plants, factory and construction with prefabricated cold-rolled ribbed steel bar (cold-rolled thread bars) of production.

该机适用于钢筋加工厂、预制构件厂及建筑工程用冷轧带肋钢筋的加工生产。

This study discusses the economic and society benefits of popularizing and using the Y small diameter cold-rolling screw thread steel reinforcing bar in the enterprises by analyzing the technology parameters,the structure characteristic and the principle and the technology economic of the small diameter cold-rolling screw thread steel reinforcing bar .

通过对Y形小直径冷轧螺纹钢筋机组的技术参数、结构特点、工作原理、试验分析和技术经济分析，论述了在企业推广使用小直径冷轧螺纹钢筋的经济效益和社会效益。

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？

Based on equilibrium equations and stress strain relationships, an effective theory and computational method for the analysis of RC beams strengthened with FRP plates are presented.

该文基于钢筋混凝土结构设计理论中的截面平衡方程和应力应变关系，为 FRP板加固的钢筋混凝土梁的计算提供了行之有效的理论和方法。

The effect factors analysis based on FEM shows that: Raising the strength of concrete and the thickness of cover concrete would delay the cracking of concrete; Stress superposition would appear due to the influence of adjacent rebar, and increasing the rebar space would postpone the time of cover cracking; Stirrup could suppress the cracking of cover concrete, however, the effect is limited and the corrosion-degree-ratio and corrosion expansive force would not increase until the cover concrete cracking happens completely.

结合有限元分析结果，对影响锈胀开裂的各因素进行了分析，结果表明：提高混凝土强度、增加保护层厚度有助于延缓保护层的开裂；相邻钢筋的存在会使钢筋之间的混凝土出现应力叠加现象，箍筋对混凝土保护层内由锈胀产生的应力具有抑制作用，但是在保护层完全开裂之前，箍筋的抑制作用有限。

Reliable data on 137 steel-framed buildings, 25 reinforced concrete ~RC!

在137钢的可靠数据结构建筑，钢筋混凝土25钢筋！

Bond slip relationship is very important to the study of the bond behavior of steel bars and concrete.

在钢筋与混凝土粘结性能的分析研究中，钢筋与混凝土的粘结本构关系是至关重要的。

Bridge construction with reinforced concrete and steel bar is applied widely in China.

1钢筋的腐蚀机理钢筋的腐蚀过程是一个电化学反应过程。

And the mechanics performance of deformed steel bar cooled down from high temperature was also tested.

了解高温下和高温冷却后钢筋力学性能的变化，对评估钢筋混凝土结构火灾后的性能有重要作用。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐