CAJ | 학술논문

通过在两个不同基础底面尺寸的装配式型钢基础进行抗压、抗拔承载力和变形特性试验研究,考察了型钢基础及土体的变形及破坏型式,试验中该类基础发生土体剪切破坏而失效,最后提出了基于试验研究的抗压、抗拔承载力计算理论,其中抗压承载力根据有效底面积计算;抗拔承载力应考虑基础上拔产生应力扩散形成的破坏土体进行计算;计算中建议按土体的内摩擦角取用不同土体的上拔扩散角;地下水位以下土体上拔扩散角建议取为0 o.研究成果为该类基础的承载力计算理论、设计方法及实际工程应用提供理论依据.
통과재량개불동기출저면척촌적장배식형강기출진행항압、항발승재력화변형특성시험연구,고찰료형강기출급토체적변형급파배형식,시험중해류기출발생토체전절파배이실효,최후제출료기우시험연구적항압、항발승재력계산이론,기중항압승재력근거유효저면적계산;항발승재력응고필기출상발산생응력확산형성적파배토체진행계산;계산중건의안토체적내마찰각취용불동토체적상발확산각;지하수위이하토체상발확산각건의취위0 o.연구성과위해류기출적승재력계산이론、설계방법급실제공정응용제공이론의거.
The tests on compression and uplift capacities of two fabricated steel foundations with different base sizes are carried out; and these load-deformations are investigated. Based on the strain-developing of steel and the observation on failure behavior of steel foundation and soil, the deformation and failure behavior of the fabricated steel foundation are investigated; and the shear failures of soil have appeared for the two foundations. Lastly, the calculating theory of compression and uplift capacity is proposed, in which the effective bottom area of foundation is used for calculating compression capacity and the soil inside spread angle is considered for calculating uplift capacity. Besides, it is proposed that the internal friction angles of different soils can be adopted as its spread angle; however, the spread angle under groundwater can be regarded 0 o. This research provides the important data for the theory of capacity calculating, designing method and engineering applications of this kind of foundations.