[1]金正超,吴海花,方光秀.加筋劲性水泥土桩的应力应变与极限承载力研究[J].延边大学学报(自然科学版),2014,40(03):235-239.
JIN Zhengchao,WU Haihua,FANG Guangxiu*.Research on reinforced cement-soil pile’s stress straining and ultimate bearing capacity[J].Journal of Yanbian University,2014,40(03):235-239.
点击复制
JIN Zhengchao,WU Haihua,FANG Guangxiu*.Research on reinforced cement-soil pile’s stress straining and ultimate bearing capacity[J].Journal of Yanbian University,2014,40(03):235-239.
加筋劲性水泥土桩的应力应变与极限承载力研究
《延边大学学报(自然科学版)》[ISSN:1004-4353/CN:22-1191/N]
卷:
第40卷
期数:
2014年03期
页码:
235-239
栏目:
基础科学研究
出版日期:
2014-09-20
- Title:
- Research on reinforced cement-soil pile’s stress straining and ultimate bearing capacity
- Keywords:
- geogrid; cement-soil composite pile reinforcement strength; ultimate bearing capacity; centre distance of pile
- 分类号:
- TU472.6
- 文献标志码:
- A
- 摘要:
- 通过1个水泥土模型桩和2个劲性水泥土组合模型桩以及2个加筋劲性水泥土组合模型桩的静载荷试验,分析了组合桩的极限承载力、Q -S曲线及应力-应变曲线.分析表明:①土工格栅围箍面积越大,模型桩的应力应变变化速度越缓慢; ②围箍面积越大,提高承载力的作用越明显; ③加筋劲性水泥土组合桩的4根芯桩离桩心距离为40 mm时,土工格栅的作用最明显,其极限承载力提高12.5%.
- Abstract:
- Based on the static load test on one cement-soil model pile, two strong cement-soil composite model piles and two reinforced cement-soil composite piles, we analyzes the ultimate bearing capacity, Q -S curve and stress-straining curve of composite piles. The results showed that: firstly, the larger the geogrid’s area of hoop is, the slower the model pile’s stress straining changes; secondly, the larger the area of hoop is, the more obvious the effect of increasing bearing capacity is; and thirdly, when the four core piles of the reinforced cement-soil piles is 40 mm away from the pile heart, the geogrid’s effect is the most obvious, and its ultimate bearing capacity is increased by 12.5%.
参考文献/References:
[1] 吴海花.劲性水泥土组合模型桩的极限承载机理研究[D].延边大学,2012:6-21.
[2] 吴迈,赵欣,窦远明,等.水泥土组合桩室内试验研究[J].工业建筑,2004,34(11):45-48.
[3] 赵晓东.新型复合材料水泥土桩的试验研究与数值分析[D].北京工业大学,2010:5-10.
[4] 唐承铁,刘猛.加筋碎石桩格栅强度设计初探[J].公路工程,2012,34(6):28.
[5] 陈榕.土工格栅加筋特性及其加筋结构计算方法研究[D].大连:大连理工大学,2011:8-16.
[6] 熊有言.土工格栅在道路工程中的应用[J].国外公路,1995,15(1):48-51.
[7] 任连伟,柴华彬.高喷插芯组合桩承载特性的影响因素分析[J].岩土工程,2012,33(1):183-192.
[8] 孙涛.变截面劲性水泥土旋喷搅拌桩关键技术与承载机理研究[D].中国海洋大学,2011:10-17.
[9] 任连伟,李建委,肖耀祖.组合桩研究与技术发展探讨[J].水利与建筑工程学报,2010,8(4):97-99.
备注/Memo
收稿日期: 2013-12-17 *通信作者: 方光秀(1967—),男,博士,副教授,研究方向为现代土木工程建造与项目管理.基金项目: 延边大学博士科研启动基金资助项目(12-96); 延边大学科技发展计划项目(2012)
更新日期/Last Update:
2014-09-20