隔離樁對盾構(gòu)側(cè)穿建筑物時基礎(chǔ)變形的影響分析
發(fā)布時間:2018-08-31 09:39
【摘要】:以濟(jì)南地鐵R1線地下段盾構(gòu)近穿某建筑物為背景,采用數(shù)值分析的方法對隔離樁不同參數(shù)進(jìn)行逐一模擬。研究了隔離樁不同樁長、樁洞距及樁間距對建筑物基礎(chǔ)位移控制的影響。研究表明,樁長越長,隔離效果越好;在一定范圍內(nèi),樁洞距越小隔離效果越好;由于樁間土拱效應(yīng),樁間距減小至一定程度后,隔離效果改善不明顯。經(jīng)優(yōu)化選取樁長為30 m、樁洞距為2.0 m、樁間距為1.2 m的隔離樁。相比未打設(shè)隔離樁的情況,優(yōu)化取值的隔離樁后,建筑物基礎(chǔ)水平位移可減小36.6%,豎向位移可減小33.1%。
[Abstract]:Taking the shield tunneling near a building in the underground section of Jinan Metro R1 Line as the background, the different parameters of the isolated pile are simulated one by using the numerical analysis method. The effects of different pile lengths, pile spacing and pile spacing on the displacement control of building foundation are studied. The results show that the longer the pile length, the better the isolation effect; in a certain range, the smaller the pile-hole spacing, the better the isolation effect; because of the soil arch effect between piles, when the pile spacing is reduced to a certain extent, the isolation effect is not obvious. The isolation piles with 30 m long, 2.0 m spacing and 1.2 m spacing are selected. The horizontal displacement of the building foundation can be reduced by 36.6 and the vertical displacement can be reduced by 33.1by optimizing the value of the isolated pile.
【作者單位】: 山東科技大學(xué)土木工程與建筑學(xué)院;濟(jì)南軌道交通集團(tuán)有限公司;
【分類號】:TU433;;U455,43
本文編號:2214602
[Abstract]:Taking the shield tunneling near a building in the underground section of Jinan Metro R1 Line as the background, the different parameters of the isolated pile are simulated one by using the numerical analysis method. The effects of different pile lengths, pile spacing and pile spacing on the displacement control of building foundation are studied. The results show that the longer the pile length, the better the isolation effect; in a certain range, the smaller the pile-hole spacing, the better the isolation effect; because of the soil arch effect between piles, when the pile spacing is reduced to a certain extent, the isolation effect is not obvious. The isolation piles with 30 m long, 2.0 m spacing and 1.2 m spacing are selected. The horizontal displacement of the building foundation can be reduced by 36.6 and the vertical displacement can be reduced by 33.1by optimizing the value of the isolated pile.
【作者單位】: 山東科技大學(xué)土木工程與建筑學(xué)院;濟(jì)南軌道交通集團(tuán)有限公司;
【分類號】:TU433;;U455,43
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