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（昆明劉家駿建筑工程設(shè)計(jì)事務(wù)所，650034；云南省設(shè)計(jì)院 昆明 650032）

［提要］通過某工程4組采用后壓漿技術(shù)的人工挖孔樁和普通人工挖孔樁的靜載荷對比試驗(yàn)，得到了各組試樁的Q-s曲線，并將試驗(yàn)結(jié)果與理論計(jì)算結(jié)果進(jìn)行了比較。結(jié)果證明，后壓漿技術(shù)可以有效地提高基樁的承載力，并能明顯減小樁的沉降；同時也驗(yàn)證了后壓漿人工挖孔樁的承載力可以通過經(jīng)驗(yàn)公式進(jìn)行估算。應(yīng)用的經(jīng)驗(yàn)公式及其計(jì)算參數(shù)可供同類型地質(zhì)的后壓漿人工挖孔樁的設(shè)計(jì)參考。

［關(guān)鍵詞］后壓漿技術(shù)；人工挖孔樁；承載力；理論計(jì)算；對比試驗(yàn)

 Theoretical and Test Analysis on Bearing Capacity of Post Grouting Man power Mine Pile /Ping Xuebing1，2（1 Kunming Liujiajun Architecture Engineering Design Institute,Kunming 650034,China; 2 Yunnan Design Institute，Kunming 650032，China）

Abstract:Based on the static load comparison test between ordinary man power mine piles and post grouting man power mine piles in a project, the Q-s curves are got and the test results are compared with the calculating ones. The results show that the technique of post grouting can effectively improve the pile"s bearing capacity and significantly reduce the pile settlement. It is also verified that the bearing capacity of post grouting manpower mine pile can be estimated by empirical formula. The empirical formula and calculation parameters can be used in design of post grouting man power mine pile on the same geological type with reference value.

Keywords:post grouting technique; man power mine pile; bearing capacity; theoretical calculation; comparing test