摘要
为在我国西南山区全方位高低腿基础设计方案中采用大直径人工挖孔扩底灌注桩基础 ,进行了 1基直线塔和 1基转角塔单腿人工扩底灌注桩基础施加水平、上拔、下压荷载试验。试验结果表明 ,高低腿基础采用人工挖孔扩底灌注桩基础因充分利用了原状土良好的力学特性而具有较高的承载能力 ,并表现出刚性短桩的工程特性。
In order to apply the foundations of man-made hole driven cast-in pedestal pile with large diameter in design of transmission foundations with legs at different heights in southwestern mountain areas of China, 3 kinds of tests, including application of horizontal, uplifting and compressive loads have been carried out on the man-made pedestal piles of an angle tower and a tangent tower. The tests have proved that the foundations with legs at different heights have a good capability of high bearing capacity due to good mechanical property of the undisturbed soil applied by the man-made hole driven cast-in-place pedestal piles and present the engineering features of stiff short piles. The bearing capacity of the single pile determined by the relations of testing load to the foundation displacement can meet the bearing stable demand of transmission foundation.
出处
《电力建设》
北大核心
2004年第8期45-47,50,共4页
Electric Power Construction
关键词
输电线路
高低腿基础
扩底桩
承载力
现场试验
transmission line
tower foundation with legs at different heights
pedestal pile
bearing capacity
field test
