STUDY OF IN-SITU DATA OF PILE-SUPPORTED EMBANKMENT WITH PILE PARTIALLY PENETRATED IN SOFT SOILS
XU Zhengzhong1，2，CHEN Renpeng1，2，CHEN Yunmin1，2
(1. Institute of Geotechnical Engineering，Zhejiang University，Hangzhou，Zhejiang 310058，China； 2. MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering，Zhejiang University，Hangzhou，Zhejiang 310058，China)
Abstract：Taking Shen-Su-Zhe-Wan(SJZA) highway as engineering background，in-situ study of pile-supported embankment with pile partially penetrated in soft soils is carried out. Soil pressure acting on the pile splint and soil surfaces，settlements of embankment and subjacent bed are monitored in two tubular pile sections during and after land filling. The results are compared with those in-situ data when pile penetrates soft soils. It can be found that the load share ratio decreases as the pile spacing increases. The measured load-bearing ratios are 61.4%–75.5% when pile partially penetrates soft soils，which are smaller than those measured when pile is penetrated in soft soils. Both soil arching heights are 1.0–1.4 times as large as the clear pile spacing. The measured differential settlements when pile is partially penetrated in soft soils are larger than those measured when pile penetrates soft soils. The settlements of embankment after land filling make up about 30.0% in total settlement. The settlements of subjacent bed make up about 60.0% in total settlement. Applicability of each method is evaluated by comparing in-situ test results and computing results of four theoretical methods.
徐正中,陈仁朋,陈云敏，. 软土层未打穿的桩承式路堤现场实测研究[J]. 岩石力学与工程学报, 2009, 28(11): 2336-2341.
XU Zhengzhong1，2，CHEN Renpeng1，2，CHEN Yunmin1，2. STUDY OF IN-SITU DATA OF PILE-SUPPORTED EMBANKMENT WITH PILE PARTIALLY PENETRATED IN SOFT SOILS . , 2009, 28(11): 2336-2341.
