石英砂地基中X截面混凝土樁筏基礎(chǔ)的豎向承載力模型試驗(yàn)(英文)
發(fā)布時(shí)間:2021-05-28 15:10
為了揭示X截面樁筏基礎(chǔ)在石英砂中的承載能力,將X截面樁與同截面積的圓形樁進(jìn)行對(duì)比研究,開(kāi)展了一系列模型試驗(yàn)。研究?jī)?nèi)容包括X截面樁筏基礎(chǔ)的荷載-沉降曲線(xiàn)、軸力和摩阻力、X截面樁凹凸邊緣的應(yīng)變分析、樁-土應(yīng)力比、樁側(cè)阻力和端部承載力的分布。結(jié)果表明:X截面樁筏基礎(chǔ)的承載力遠(yuǎn)遠(yuǎn)大于圓形樁筏基礎(chǔ)的承載力。筏板下的X截面樁軸力峰值比圓形樁的軸力峰值小且位置更深;因而,中性點(diǎn)位置也比圓形樁更深。此外,X截面樁的凹緣處應(yīng)變遠(yuǎn)大于凸緣處,且隨著荷載的增大,凸緣處具有更大的承載力潛能。與圓截面樁相比,X截面樁具有更高的樁-土應(yīng)力比,更大的側(cè)阻力與端阻力荷載分擔(dān)比。因此,X截面樁可以顯著提高砂土中樁筏基礎(chǔ)的承載力。
【文章來(lái)源】:Journal of Central South University. 2020,27(06)EISCICSCD
【文章頁(yè)數(shù)】:9 頁(yè)
【文章目錄】:
1 Introduction
2 Model tests
2.1 Model test equipment
2.2 Model pile and sand
3 Model test results and discussion
3.1 P-S curves of circular and X-section concrete pile raft foundation
3.2 Influence of pile numbers on P-S curves
3.3 Axial force and skin friction
3.4 Strain on concave and convex edge of X-section concrete pile
3.5 Pile-sand stress ratio and load-sharing
3.6 Distributions of side and tip resistance
4 Conclusions
【參考文獻(xiàn)】:
期刊論文
[1]石灰加固貝寧(西非)土的性能及滑坡防控(英文)[J]. Quirin Engelbert Ayeditan ALAYE,LING Xian-zhang,Yvette Sèdjro KIKI TANKPINOU,Marx Ferdinand AHLINHAN,LUO Jun,Michel Hadilou ALAYE. Journal of Central South University. 2019(11)
[2]石柱與顆粒覆蓋增強(qiáng)土壤的實(shí)驗(yàn)研究(英文)[J]. Nima MEHRANNIA,Farzin KALANTARY,Navid GANJIAN. Journal of Central South University. 2018(04)
[3]Numerical simulation on behavior of pile foundations under cyclic axial loads[J]. 趙明華,衡帥,鄭玥. Journal of Central South University. 2017(12)
[4]現(xiàn)澆X形混凝土樁豎向承載特性試驗(yàn)及其極限承載力預(yù)測(cè)[J]. 張敏霞,丁選明,陳育民. 煤炭學(xué)報(bào). 2011(02)
[5]現(xiàn)澆X形樁豎向承載特性足尺模型試驗(yàn)研究[J]. 王智強(qiáng),劉漢龍,張敏霞,袁佶,雍君. 巖土工程學(xué)報(bào). 2010(06)
本文編號(hào):3208271
【文章來(lái)源】:Journal of Central South University. 2020,27(06)EISCICSCD
【文章頁(yè)數(shù)】:9 頁(yè)
【文章目錄】:
1 Introduction
2 Model tests
2.1 Model test equipment
2.2 Model pile and sand
3 Model test results and discussion
3.1 P-S curves of circular and X-section concrete pile raft foundation
3.2 Influence of pile numbers on P-S curves
3.3 Axial force and skin friction
3.4 Strain on concave and convex edge of X-section concrete pile
3.5 Pile-sand stress ratio and load-sharing
3.6 Distributions of side and tip resistance
4 Conclusions
【參考文獻(xiàn)】:
期刊論文
[1]石灰加固貝寧(西非)土的性能及滑坡防控(英文)[J]. Quirin Engelbert Ayeditan ALAYE,LING Xian-zhang,Yvette Sèdjro KIKI TANKPINOU,Marx Ferdinand AHLINHAN,LUO Jun,Michel Hadilou ALAYE. Journal of Central South University. 2019(11)
[2]石柱與顆粒覆蓋增強(qiáng)土壤的實(shí)驗(yàn)研究(英文)[J]. Nima MEHRANNIA,Farzin KALANTARY,Navid GANJIAN. Journal of Central South University. 2018(04)
[3]Numerical simulation on behavior of pile foundations under cyclic axial loads[J]. 趙明華,衡帥,鄭玥. Journal of Central South University. 2017(12)
[4]現(xiàn)澆X形混凝土樁豎向承載特性試驗(yàn)及其極限承載力預(yù)測(cè)[J]. 張敏霞,丁選明,陳育民. 煤炭學(xué)報(bào). 2011(02)
[5]現(xiàn)澆X形樁豎向承載特性足尺模型試驗(yàn)研究[J]. 王智強(qiáng),劉漢龍,張敏霞,袁佶,雍君. 巖土工程學(xué)報(bào). 2010(06)
本文編號(hào):3208271
本文鏈接:http://www.sikaile.net/guanlilunwen/chengjian/3208271.html
最近更新
教材專(zhuān)著