对混凝土应变速率敏感性的研究现状及其工程应用进行了简要的评述。
The state of the art of research on the strain rate sensitive behavior of concrete and its application in engineering are briefly reviewed.
通过龙固副井冻结凿井期现场实测，获得了龙固副井外层井壁混凝土应变的变化规律。
Variety rules of concrete strain of outer shaft wall were carried out based on in-situ measurement during freeze sinking of Longgu Mine auxiliary shaft.
试验中测量了轴压试件的极限荷载、混凝土应变、钢筋应变、钢筋网应变以及复合砂浆应变。
In the experiment the strain of concrete, steel bar, steel mesh, composite mortar and the ultimate load carrying capacity are tested.
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。
Confinement of concrete results in a modification of the effective stress-strain relationship: higher strength and higher critical strains are achieved.
采用逐步递增混凝土表面应变的非线性分析方法，分析了受扭构件从开始受荷到构件破坏全过程的内力与变形关系。
A nonlinear full range analysis of torque-twist relationship of torsional member taking into account the gradual increase in strain on the concrete surface is discussed in this paper.
在钢筋混凝土双悬臂梁试验系统中，应变、挠度以及荷载是其主要的测试内容。
In test system of reinforced concrete double cantilever beams, strain, deflection and load were principal experimental contents.
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；
The results indicate that the confinement of fiber sheet can increase the compressive strength and ultimate strain of reinforced concrete column remarkably.
这种模型满足二维应力平衡条件、莫尔应变协调条件和混凝土双轴软化本构关系。
The model satisfies the two dimensional stress equilibrium, Mohr's cricular strain compatibility and softened biaxial constitutive laws of concrete.
分析了应变率对混凝土弹性模量、峰值应力时的应变、泊松比和混凝土吸能能力的影响。
The relationships between strain rate and the elastic modulus, critical strain, Poisson's ratio and energy absorption capacity of concrete are still studied.
客观描述高应变率作用下的约束混凝土的力学行为需要考虑加载历史。
To objectively describe the behavior of confined concrete under high strain rates the loading history has to be taken into account.
通过直接拉伸试验研究了不同自应力等级下的钢纤维自应力混凝土的受拉应力-应变全曲线特征。
Based on the direct tension test, the characteristics of tension stress-strain full curves of steel fiber reinforced self-stressing concrete were investigated.
混凝土实测应变包含弹性应变、徐变应变及混凝土自由变形、温度应变等非应力应变。
The measured strain of concrete includes the elastic strain, creep strain and also the non-stress strain like the concrete free deformation and temperature strain.
利用以上模型对组合板进行有限元计算，分析了压型钢板及混凝土的应变、组合板挠度、滑移以及承载力随荷载及跨度的变化规律。
Using above-mentioned model to solve composite slab, strain of concrete and profiled steel deck, deflection, slide and bearing capacity of composite slab are analyzed.
试验结果确定了CFRP约束高强混凝土强度和极限应变的计算模型。
The calculation model of strength and ultimate strain of high-strength concrete wrapped with CFRP is made based on this results.
在本文中，作者建立了FRP约束混凝土圆形柱应力-应变关系的非线性弹性模型。
In this paper, a nonlinear elastic model to predict stress-strain relationship of circular concrete columns confined with fiber reinforced polymer (FRP) laminates is developed.
经过分析发现受腐蚀后混凝土峰值应变与峰值应力的开方，拐点处和收敛点处应力与峰值应力有良好的线性相关性。
Analysis found that the peak strain is linear with the square of peak stress, the inflection point stress, and the convergence point stress is linear with the peak stress.
最后，提出了C45细石混凝土弹性模量和简化三直线混凝土应力-应变关系曲线的计算公式。
Finally, the formulation of both modulus of elasticity and simplified stress-stain relationship curve on C45 fine aggregate concrete were proposed.
混凝土拉伸应力—应变全曲线能较全面地反映混凝土的拉伸性能。
The stress-strain entire curve in direct tension can comprehensively reflect the tensile performance of concrete.
用绕丝加固柱可以提高柱破坏时纵筋和混凝土的应变。
With spiral hoops strengthen column can raise transshape capacity of vertical reinforcement and concrete when the columns are destroying.
混凝土内部应力测量关键在于应力应变转换，而应力应变转换关键在于徐变系数的识别。
The key to concrete stress measure is the translation from strain to stress. And the transition 's key is the identification of creep factor.
文末，仅通过混凝土立方体抗压强度，建立了不同强度等级混凝土的应力-应变曲线上升段本构关系，该模型结果与试验结果吻合很好。
At the end of the paper, a stress strain response model of different concrete grade has been built only using the compressive strength, and this model coincides well with the experiment results.
在较高的恒定侧向压力下，混凝土材料对应变速率的敏感程度降低；
The strain rate sensitivity of concrete tends to decrease with higher lateral confined stress.
基于模态应变能理论，得到能用于混凝土桥梁结构损伤的识别指标。
Based on the theory of modal strain energy, a damage index is deduced to identify the concrete bridge structure damage.
由于混凝土高应变率实验技术的困难，目前对于混凝土动态力学行为的描述存在较大的争议。
Because of the difficulty of concrete high strain rate experimental techniques, there are many disputes about how to describe the dynamic mechanics properties of concrete.
测定了采用高强轻骨料配制的强度等级LC30～LC55的结构轻骨料混凝土（LWAC）的应力-应变全曲线。
The whole stress-strain curves of structural lightweight aggregate concrete (LWAC) with strength grade from LC30 to LC55 were obtained experimentally.
利用矩形箍筋约束混凝土的应力一应变关系和平截面假定，建立了高强混凝土剪力墙截面曲率延性系数的计算方法。
A method to calculate the section curvature ductility index of high strength concrete shear wall is induced by using stress-strain relationship of rectangle stirrup and plane section assumption.
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。
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.
分析了钢纤维高强混凝土和普通高强混凝土的缺口敏感性以及钢纤维对高强混凝土裂缝前缘应变场分布的影响。
The notch sensitivity of HSC and steel fiber reinforced HSC and the strain field of HSC reinforced with steel fibers ahead of the crack tip have been analyzed.
分析了钢纤维高强混凝土和普通高强混凝土的缺口敏感性以及钢纤维对高强混凝土裂缝前缘应变场分布的影响。
The notch sensitivity of HSC and steel fiber reinforced HSC and the strain field of HSC reinforced with steel fibers ahead of the crack tip have been analyzed.
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