Confinement of concrete results in a modification of the effective stress-strain relationship: higher strength and higher critical strains are achieved.
混凝土约束改变了有效应力-应变关系：造成强度和临界应变的增加。
For the same lateral confinement, high strength concrete columns develop lower strength enhancement than normal strength concrete columns.
在相同的侧向约束下，高强混凝土柱的核心强度提高幅度低于普通混凝土柱。
The results indicate that the confinement of fiber sheet can increase the compressive strength and ultimate strain of reinforced concrete column remarkably.
结果表明：纤维布包裹加固钢筋混凝土柱的轴心抗压承载能力和极限应变明显提高；
With the load eccentricity ratio increased, the confinement of steel tube to core concrete and the ultimate carrying capacity of the column decreased.
随着偏心率的增大，钢管对核心混凝土的套箍力作用不断削弱，构件的极限承载力也明显下降。
The steel tube whose longitudinal tension strain is the biggest has no confinement effect on core concrete.
纵向受拉最大点的钢管对核心混凝土没有套箍作用。
A stress-strain relation of core concrete is presented, in which the confinement effect of steel tube to core concrete is modified by the circumference stress grade.
提出了偏心受压的钢管混凝土考虑钢管径向应力梯度对紧箍作用影响的核心混凝土的应力-应变关系模型。
This paper reports the experimental research of 10 specimens of short steel tubular columns filled with high-strength concrete, which have different confinement index.
本文报导了10个不同套箍指标的钢管高强混凝土短柱试件的试验研究。
The influence of the strength of core concrete, the ratio of steel content, confinement coefficient and loading format on the mechanical properties of RPC filled in steel tube short columns.
分析了核心混凝土强度、含钢率、套箍指标、加载方式等参数对极限承载力的影响。
The test results of the mechanical properties of 18 samples of tubular extra-high strength concrete encased in steel tubes with different confinement indices have been studied and reported.
本文报导了18根不同套箍指标的钢管超高强混凝土短柱试件的实验研究。
External confinement by the wrapping of fiber reinforced plastic (FRP) is an efficient technique to increase the loading-carrying capacity and ductility of the concrete column.
外包纤维复合材料(frp)约束混凝土柱，可以有效提高混凝土柱的承载力和延性。
External confinement by the wrapping of fiber reinforced polymer (FRP) is an efficient technique to increase the bearing capacity and ductility of confined concrete.
外包纤维复合材料(frp)约束混凝土，可以有效的提高混凝土的承载力和延性。
One important application of FRP composites is as a confining material for concrete. FRP confinement can enhance both the compressive strength and the ultimate strain of concrete significantly.
其中一项重要的用途就是通过缠绕FRP提供的约束来加固修复钢筋混凝土柱，FRP约束钢筋混凝土柱的抗压强度和延性都得到很大的提高。
One important application of FRP composites is as a confining material for concrete. FRP confinement can enhance both the compressive strength and the ultimate strain of concrete significantly.
其中一项重要的用途就是通过缠绕FRP提供的约束来加固修复钢筋混凝土柱，FRP约束钢筋混凝土柱的抗压强度和延性都得到很大的提高。
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