摘要
为向建设中的西昌—攀枝花高速公路桥梁桩基础设计提供参考(该高速公路沿线约90 km路段通过岩性软弱、遇水易泥化和崩解的昔格达岩层),在攀枝花地区新九和安宁河流域德昌蒲坝的昔格达岩层中对13根灌注桩进行了单桩轴向静载试验,研究了桩的承载力和影响承载力的因素.结果表明,昔格达岩层可以作为桩基础的持力层,但应保证桩的施工质量.
To provide a reference for the design of pile foundations of bridges on the Xichang- Panzhihua expressway being constructed, the static loading tests and researches on the axial bearing capacity of 13 cast-in-situ piles set in Xigeda-rock were carried out at Xinjiu in Panzhihua and at Puba in Dechang. Xigeda-rock is an extremely soft rock with the special behaviors of softening, mashing and collapsing due to water, and this kind of rock abounds in a region as long as 90 km along this expressway. The experimental and research results show that Xigeda-rock can be used as the ground of pile foundations, and the construction quality is extremely important to their bearing capacity.
出处
《西南交通大学学报》
EI
CSCD
北大核心
2006年第6期669-674,共6页
Journal of Southwest Jiaotong University
基金
交通部西部交通建设科技项目(2003-318-800-55)
关键词
昔格达岩层
软岩
灌注桩
静载试验
承载力
xigeda-rock
soft rock
cast-in-situ pile
static loading test
bearing capacity
