the initial form of brb is composed of core material of low yield and steel pipe filled with concrete. in present, the core section type of the most popular brb are ─ and+. recently, t-shaped cross section appeared.

in order to avoid buckling of the conventional steel braces and improve their energy dissipation capacity, the steel brace can be equipped with a lateral restraining part, which is a so-called buckling-restrained brace ( brb).

为避免钢支撑受压失稳和改善其耗能性能，可以在支撑上安装约束构件做成防屈曲支撑（buckling-restrained brace，简称BRB）。

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methods: after the model of retinal moderate blast injury was established in rabbits, the morphological changes of brb and the therapeutic effects of sod and dexamethasone on them were observed with colloidal lanthanum tracing.

方法：建立兔视网膜中度冲击伤动物模型，采用硝酸镧示踪剂观察伤后血视网膜屏障的改变及药物治疗效果。

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this paper compared the steel volumes of both the brb and the general braces. the results showed that: the steel volumes of brb were always less than the general braces' under the different loads.

本文比较了屈曲约束支撑和普通支撑两者的用钢量情况，结果表明：在不同荷载作用下，屈曲约束支撑的用钢量均比普通支撑的用钢量小。

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strengthening strategies include strengthening with braces, strengthening with brb and strengthening with dampers. design strategies include increasing the column sections, increasing the confinement of hoops, and increasing the seismic fortification intensity.

结构加固方法包括加普通支撑、加BRB支撑、加阻尼器方案；重新设计方法包括增大柱子截面、提高箍筋约束效果、提高设防烈度等方案。

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and the effect of the optimization methods in this paper will be demonstrated by the results of an example comparing the full-drift-angle method and the energy method with the non-optimal general method of designing brb structure using the programs.

并利用所编程序将满位移角法和能量法与目前布置防屈曲支撑常用的方法进行对比，验证本文所提出优化方法的优化效果。

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buckling restrained brace ( brb) yield but not buckling under axial compression loads, performs good hysteretic properties and energy dissipation. now it is applied to new buildings and reinforcement of existing buildings.

屈曲约束支撑在轴压荷载作用下屈服而不屈曲，具有良好的滞回性能和耗能特性，已在不少工程中应用，是一种很具有发展潜力的耗能减震元件，具有良好的发展应用前景。

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objective: to observe the morphological changes of blood retinal barrier ( brb) after retinal moderate blast injury and the therapeutic effects of superoxide dismutase ( sod) and dexamethasone on them.

目的：探讨兔视网膜中度冲击伤后血视网膜屏障的形态变化及超氧化物歧化酶（SOD）和地塞米松的治疗作用。

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buckling-restrained brace ( brb) offer lateral restriction to the steel core to avoid it to buckle, when being suffered big press or pull, and the steel core always can yield.

防屈曲支撑是通过在支撑钢芯外围附设防止其整体失稳的约束单元，在限制支撑发生屈曲的同时能够使其在较大拉压荷载作用下都表现出全截面屈服。

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based on the finite element software, this paper studied the buckling restrained brace ( brb) of the yield capacity and ultimate capacity with the finite element method, and analyzed the influence factors of brb.

本文基于有限元软件，研究了屈曲约束支撑的屈服承载力和极限承载力的分析方法，并分析了屈曲约束支撑屈服承载力的影响因素。

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brb system consists of a series of confidence rules, which in essence is a kind of expert system, and it can effectively use various types of information to set up the nonlinear model between input and output.

BRB系统由一系列置信规则组成，它本质上是一种专家系统，能够有效利用各种类型的信息，建立输入和输出之间的非线性模型。

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at last, depending on the domestic and foreign development and application of brb, some proposals are put forward in further research, application and popularization in our country as well as forecasting the future trend of development.

最后结合当前防屈曲支撑在国内外的发展和应用情况，提出了我国进一步研究、应用、推广防屈曲支撑的若干问题和建议，对未来发展趋势进行了展望。

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the chinese medicine dgh capsule can prevent the vessel leakage by damage of brb, and dgh capsule can protect the visual function of the stz diabetic rat.

中药DGH可减少BRB的损害引起的血管渗漏和保护STZ大鼠的视功能。

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thus, we speculate that escin may amplify the protective effects of glucocorticoid on brb ( synergistic protective effect) by increasing the expression of the glucocorticoid receptor.

由此我们推测，七叶皂苷有可能通过提高糖皮质激素受体的表达，进而促进糖皮质激素对血-视网膜屏障的保护作用（协同保护作用）。

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then the work principle in different design situations and stability of brb are analyzed thoroughly, and the related formulas are derived, including requirements of overall stability, core element stability and connection stability.

其次深入分析了防屈曲支撑在不同设计状态时的工作机理，并对防屈曲支撑的稳定性进行了分析，推导了相关的公式，包括整体稳定、核心单元稳定和连接部分稳定的要求等。

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since buckling-restrained brace ( brb) can yield in both tension and compression without buckling, the disadvantages of the conventional braced frame system can be overcome.

因为屈曲约束支撑（BRB）在受拉和受压时都可屈服而不屈曲，因此克服了传统支撑体系的缺点。

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buckling-restrained brace ( brb), with enhanced lateral stiffness and higher earthquake energy dissipation capacity, it can be used in seismic mitigation and retrofitting of structure.

防压曲支撑（BRB）既可提高结构的抗侧刚度，又有较强的地震耗能能力，可用于结构抗震加固中。

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objective to investigate the blood-retinal barrier ( brb) function of porcine retinal pigment epithelial ( rpe) cells cultured in vitro.

目的研究体外培养的猪眼视网膜色素上皮（RPE）细胞的血视网膜外屏障功能。

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the behavior rolling back ( brb) mode can recover the systems after viruses infection by analyzing the behavior of the unknown viruses.

提出清除新病毒的行为逆转（BRB）模型，这种模型可通过分析病毒行为自动修复未知病毒对系统的损坏。

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a new type of buckling restrained brace ( brb) is designed against the shortages of traditional brb in application area.

针对传统防屈曲耗能支撑在应用上的缺点，设计了一种新型防屈曲耗能支撑。

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the knowledge expression is achieved through the brb expert system, and knowledge reasoning is realized through the evidence reasoning ( er) algorithm.

其中，知识的表达通过置信规则库（BRB）专家系统来实现，而知识的推理则通过证据推理（ER）算法实现。

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