PHC管桩挤土效应环境监测与分析

贾志刚; 张瑞敏; 李科; 曾红彪

doi:10.3969/j.issn.1001-5485.2015.01.019

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raybet体育在线院报 ›› 2015, Vol. 32 ›› Issue (1) : 92-96. DOI: 10.3969/j.issn.1001-5485.2015.01.019

岩土工程

PHC管桩挤土效应环境监测与分析

贾志刚^{1, 2}, 张瑞敏², 李科¹, 曾红彪¹

作者信息 +

Environmental Monitoring and Analysis on the Compacting Effects of PHC Pipe Piles

JIA Zhi-gang^1,2,ZHANG Rui-min²,LI Ke¹,ZENG Hong-biao¹

Author information +

文章历史 +

摘要

为了研究静压群桩时产生的挤土效应对周围建筑物的影响,对驻马店市某住宅小区内PHC管桩静压施工引起的土体深层位移与超孔隙水压力进行了现场监测。监测结果表明,超孔隙水压力随着群桩边界线距离的增加近似呈性线减小,且超孔隙水压力影响半径随深度的增加逐步增大,最大影响半径约为桩直径的29倍。水平位移的总体表现为:表层土体位移较大,随着深度的增加,水平位移逐渐减小,桩端附近几乎为0;水平位移受卸压沟影响显著,有效影响深度约为卸压沟深度的2倍。

Abstract

In order to investigate the compacting effects caused by the penetration of pre-stressed high-strength concrete (PHC) pipe pile group on surrounding engineering environment, we carried out on-site monitoring on the excess pore water pressure and deep soil displacement in Zhumadian. Results show that the excess pore water pressure approximately linearly reduces as the distance to the pile group boundary increases, and the radius of excess pore water pressure’s influence increases with depth, the maximum radius of influence is about 29 times the diameter of the pile. The surface soil displacement is large, and the displacement decreases with the depth to almost zero until the pile end. The horizontal displacement is significantly affected by the relief grooves, and the effective impact depth is approximately two times its depth.

导出引用

贾志刚, 张瑞敏, 李科, 曾红彪. PHC管桩挤土效应环境监测与分析[J]. raybet体育在线院报. 2015, 32(1): 92-96 https://doi.org/10.3969/j.issn.1001-5485.2015.01.019

JIA Zhi-gang,ZHANG Rui-min,LI Ke,ZENG Hong-biao. Environmental Monitoring and Analysis on the Compacting Effects of PHC Pipe Piles[J]. Journal of Changjiang River Scientific Research Institute. 2015, 32(1): 92-96 https://doi.org/10.3969/j.issn.1001-5485.2015.01.019

中图分类号： TU44

参考文献

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