旋噴樁止水帷幕對拉森鋼板樁變形的影響分析

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DOI：10.19860/j.cnki.issn1005-8249.2024.01.021

LIANG Sheng1，WANG Xiaolei1，ZHANG Jianying2，YU Tingfu2，ZHANG Zehao1 （1. College of Civil Engineering，Hebei University of Engineering，Handan O56038，China’； 2. Road and Bridge Engineering Branch of China 22 Metallurgy Group Co.，Ltd.， Tangshan O640oo，China） Abstract：Basedonthedepfoundationpit projectofpipegalerydesignedbythewaterproofcurtainofLarsensteelsheetpile + high pressurejetgrouting pileinawater-richstratuminHandanCity，HebeiProvince，thewholeprocessofdewatering excavationof foundatiopitwasnumericallysimulatedbyMidas-GTSsoftware，ndtheinflueneofwaterproofcurtainonthedeformationandstressof supportingstructurewasstudied.Onthebasisofverifyingtheaccuracyofthemodel，theinfluencesofdiferentspacingsbetween waterproofcurtainandsupportingpileanddiferentrowsofwaterproofcurtainonsupportingpileareanalyzedrespectively.hesults showthat the waterprofcurtaincannotonlyprolongtheseepage pathand slowdowntheseepagevelocity，butalsosharesomesoil pressure，whichhasapositiveefectoninhibitingthedeformationandbendingmomentof thesupportingpile.Thediferentspacing betweenterotaryjetgrouingpileandthesupportingpileincreasstheendingstifess，hichcanectivelyliitthefomationnd bending moment of the supporting pile.It is suggested that the spacing should be maintained at 1～3m ，but the inhibitory effect is not obvious after exceeding 5m .The more rows of rotary jet grouting pilewaterproof curtain，the more obvious thesupporting effect is.The relevantresultshave certainreference significancefor theoptimizationof foundation pit engineering in water-rich strata.

Keywords：numerical simulation；deep foundation pit excavation；water-rich strata；water-stopping curtain

0引言

隨著中國經(jīng)濟的高速度高質(zhì)量發(fā)展，為城市化進程開啟了加速鍵，這也使得基坑工程逐漸向更深、更廣地發(fā)展[1-2]。（剩余7723字）