本文關(guān)鍵詞： 承臺(tái)微型樁 極限彎矩 FLACD 荷載分擔(dān)比 樁間距　出處：《中外公路》2017年04期 　論文類型：期刊論文

【摘要】：通過(guò)文獻(xiàn)調(diào)研闡明微型樁發(fā)展歷史,對(duì)微型樁的分類和內(nèi)力計(jì)算方法進(jìn)行總結(jié);提出加筋微型鋼管混凝土樁極限彎矩可按GJB 4142-2000規(guī)程中純彎鋼管混凝土構(gòu)件計(jì)算,加筋等效為含鋼率,基于FLAC3D軟件對(duì)其進(jìn)行數(shù)值模擬試驗(yàn)驗(yàn)證;借鑒國(guó)內(nèi)外關(guān)于鋼管混凝土組合結(jié)構(gòu)純彎構(gòu)件設(shè)計(jì)理論,對(duì)該文研究的微型單樁極限彎矩進(jìn)行計(jì)算,得出幾種規(guī)程下的極限彎矩設(shè)計(jì)值。鑒于承臺(tái)內(nèi)樁間距合理取值問(wèn)題,以3×3樁組成的9樁承臺(tái)結(jié)構(gòu)進(jìn)行數(shù)值模擬試驗(yàn)研究,通過(guò)調(diào)整樁間距得出各樁結(jié)構(gòu)內(nèi)力的數(shù)值解,對(duì)數(shù)值解進(jìn)行擬合分析,得出各樁結(jié)構(gòu)內(nèi)力變化趨勢(shì)和荷載分擔(dān)比,從而確定合理樁間距。最后,結(jié)合工程實(shí)例驗(yàn)證所得研究成果的準(zhǔn)確性,以期該研究成果對(duì)承臺(tái)微型樁設(shè)計(jì)起到一定的參考作用。
[Abstract]:The development history of micro pile is explained through literature investigation, the classification and internal force calculation method of micro pile are summarized, and the ultimate bending moment of reinforced micro steel tube concrete filled steel tube pile can be calculated according to GJB 4142-2000 code. The reinforcement is equivalent to the steel content, which is verified by numerical simulation test based on FLAC3D software, and the ultimate bending moment of the miniature single pile studied in this paper is calculated by referring to the design theory of pure bending members of concrete-filled steel tubular structures at home and abroad. The design value of ultimate bending moment under several regulations is obtained. In view of the reasonable value of pile spacing in pile cap, the numerical simulation study is carried out on 9 pile cap structures composed of 3 脳 3 piles, and the numerical solution of internal force of each pile structure is obtained by adjusting the pile spacing. By fitting and analyzing the numerical solution, the variation trend of internal force and load-sharing ratio of each pile structure are obtained, so as to determine the reasonable pile spacing. Finally, the accuracy of the research results is verified by combining the engineering examples. The research results can be used as reference for the design of pile cap.
【作者單位】： 貴州省交通規(guī)劃勘察設(shè)計(jì)研究院股份有限公司;貴州大學(xué)資源與環(huán)境工程學(xué)院;喀斯特環(huán)境與地質(zhì)災(zāi)害防治教育部重點(diǎn)實(shí)驗(yàn)室;
【分類號(hào)】：P642.22;TU473.1

【相似文獻(xiàn)】

相關(guān)期刊論文 前9條

1 林春秀;張泳雄;劉容識(shí);;塹頂微型樁在軟巖邊坡加固中的應(yīng)用[J];土工基礎(chǔ);2006年05期

2 孫書(shū)偉;朱本珍;馬惠民;;框架微型樁結(jié)構(gòu)抗滑特性的模型試驗(yàn)研究[J];巖石力學(xué)與工程學(xué)報(bào);2010年S1期

3 高鵬;;微型樁在矸石山山體滑坡治理工程中的應(yīng)用[J];山西建筑;2014年22期

4 孔紀(jì)名;蔡強(qiáng);張引;韓培鋒;;單排微型樁加固碎石土滑坡物理模型試驗(yàn)[J];山地學(xué)報(bào);2013年04期

5 馮君;周德培;江南;楊濤;;微型樁體系加固順層巖質(zhì)邊坡的內(nèi)力計(jì)算模式[J];巖石力學(xué)與工程學(xué)報(bào);2006年02期

6 余桂紅,李紅超;錨索施工過(guò)程中微型樁對(duì)滑坡的治理[J];中國(guó)地質(zhì)災(zāi)害與防治學(xué)報(bào);2001年02期

7 祁志強(qiáng);譚建國(guó);曹繼軍;鄭皓;;微型樁在三峽庫(kù)區(qū)黃土坡滑坡區(qū)塌岸防治工程中的應(yīng)用[J];探礦工程(巖土鉆掘工程);2005年S1期

8 方志森;詹s，

本文編號(hào)：1543517