基于土拱效应的挂板式斜插桩板墙板后土压力计算方法研究
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摘要
斜插式桩板墙在形式上具有一定的特殊性,其墙后土体在一定范围内可以发生自由变形,且墙后水体与外界完全连通,这在一定程度上影响了支护结构后方土压力的分布形式和桩后土拱的大小及位置。通过考虑土拱效应的卸荷拱法推导出了斜插式桩板墙板后土压力计算公式,将其公式所得理论计算值与模型试验实测值、ABAQUS分析值进行比对,得出所推导的斜插式桩板墙板后土压力公式对于该新型支挡结构在实际工程中的设计计算有较好的参考价值。
The soldier pile and lagging with inclinedly inserted panel wall has a special configuration since the soil behind the wall can deform freely and the drainage path behind the wall is connected to the ambient environment. Therefore, the earth pressure distribution, magnitude and the soil arching behind the retaining wall are affected by its unique configuration. This paper presents the earth pressure estimation formula for the soldier pile and lagging with inclinedly inserted panel wall considering the soil arching effect. The earth pressures obtained by the recommended formula, physical model tests, and numerical analysis results by AQAQUS finite element analysis method are compared. It is concluded that the proposed formula can fairly estimate the earth pressure on this new retaining structure type.
The soldier pile and lagging with inclinedly inserted panel wall has a special configuration since the soil behind the wall can deform freely and the drainage path behind the wall is connected to the ambient environment. Therefore, the earth pressure distribution, magnitude and the soil arching behind the retaining wall are affected by its unique configuration. This paper presents the earth pressure estimation formula for the soldier pile and lagging with inclinedly inserted panel wall considering the soil arching effect. The earth pressures obtained by the recommended formula, physical model tests, and numerical analysis results by AQAQUS finite element analysis method are compared. It is concluded that the proposed formula can fairly estimate the earth pressure on this new retaining structure type.
引文
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[10] 任永忠,马守才.基于不同拱脚形式下抗滑桩土拱效应研究[J].重庆交通大学学报(自然科学版),2016,35(1):101-106.
[2] 陈雷.桩板式挡土墙在公路、市政工程中的优化研究[J].公路,2017,62(05):34-38.
[3] 蒲德红,翟文光,周敬程.斜插式桩板墙在公路边坡中的应用分析[J].路基工程,2016(1):137-141.
[4] 李光明.斜插式桩板墙与锚索桩复合支护结构在特殊土高边坡支护中的应用[J].公路交通科技(应用技术版),2014,10(5):54-56.
[5] 邱志华.门架式抗滑桩土拱效应的数值分析研究[J].土工基础,2018,32(3):318-321+325.
[6] 李梅,钱锐,惠明星.基于土拱效应的抗滑桩桩距优化设计[J].武汉理工大学学报,2017,39(2):45-48.
[7] 罗丽娟,夏香波,王瑞,等.悬臂式抗滑桩桩前被动土拱效应研究[J].建筑科学与工程学报,2017,34(2):56-63.
[8] 金林,胡新丽,谭福林,等.基于红外热成像技术的抗滑桩土拱效应模型试验研究[J].岩土力学,2016,37(8):2332-2340.
[9] 韩同春,邱子义,豆红强.基于颗粒离散元的抗滑桩土拱效应分析[J].中南大学学报(自然科学版),2016,47(8):2715-2722.2715-2722.
[10] 任永忠,马守才.基于不同拱脚形式下抗滑桩土拱效应研究[J].重庆交通大学学报(自然科学版),2016,35(1):101-106.