中文摘要：

近几年来，利用各向异性层合复合材料作为结构元件有了显著的增长．这种增长是利用了复合材料重量轻、强度高和各向异性材料等性质，这些性质都可以通过改变纤维取向和铺层顺序而加以调整，从而可以有效地使用层合复合材料．复合材料的正确和有效使用，要求进行更复杂的分析，以便能准确地预报这些材料对外栽荷的弹性响应．通过试验的方法来研究碳纤维层合箱梁在集中荷载作用下的剪力滞效应．

英文摘要：

In recent years,using the anisotropic laminated compound materials as the structural element has remarkable growth. This kind of growth has used the composite materials＇ characteristics of light weight, high intensity and anisotropic material. The nature may be adjusted by the change of textile beam orientation and the layer order. Thus it may use the laminated composite materials extremely effectively. The correct and the effective use of composite materials requests carrying on a more complex analysis, so that they can accurately forecast the material elastic behavior in response to external load. This article focuses on the shear lag effect of the carbon fiber laminated box girder under the concentrated load by the method of test.