The erection technology of 30m t - beam of the ramp bridge on weak subgrade 橋梁淺基礎(chǔ)埋置深度的模糊確定
Embeded depth of foundation 淺基礎(chǔ)基礎(chǔ)埋置深度
Embedded depth of foundation 基礎(chǔ)埋置深度
Associated with engineering practice , two important questions . one being laying - over depth of box foundation and the other being the measures for treating different settlement between main and buildings , are discussed in the view of designing . and the methods for dealing with practical engineering problems are presented also 結(jié)合工程實(shí)踐,從設(shè)計(jì)的角度對(duì)高層建筑箱基的埋置深度和主樓與裙房間沉降差異的解決措施進(jìn)行了討論,提出了一些處理實(shí)際工程問(wèn)題的措施
According to elasto - plasticity theory , with the help of finite - method program ansys , the paper undertakes the computer analogue tests about the bearing capacity of pile tip arranged by orthogonal principle , and attains the relations of pile - tip bearing capacity to embedment depth , pile diameter , cohesion , internal friction angle and modulus of deformation . by the means of mathematical statistic , regression equation of the ultimate bearing capacity calculated by finite element method is gained through the regression analysis of 81 group data from the computer analogue tests . by comparison and analysis of the values calculated by finite - element regression equation and the values of in situ loading test , the regression equation is gained which calculates the size effect for base resistance of large diameter pile 根據(jù)彈塑性理論,運(yùn)用大型有限元軟件ansys按正交設(shè)計(jì)理論對(duì)樁端承載力進(jìn)行模擬計(jì)算,獲得樁端承載力與樁長(zhǎng)(埋置深度) 、樁徑、粘聚力、內(nèi)摩擦角及變形模量等主要影響因素的關(guān)系,并采用數(shù)理統(tǒng)計(jì)方法,對(duì)81組ansys模擬試驗(yàn)結(jié)果數(shù)據(jù)進(jìn)行回歸分析,得到有限元法確定樁端極限承載力的回歸公式,并將有限元法回歸公式計(jì)算值與現(xiàn)場(chǎng)小壓板載荷試驗(yàn)值進(jìn)行比較分析,得到大直徑樁端阻的尺寸效應(yīng)系數(shù)計(jì)算公式。