变刚度桩筏基础变形特性试验研究Word文档下载推荐.docx
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变刚度桩筏基础变形特性试验研究Word文档下载推荐.docx
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变刚度桩筏基础变形特性试验研究变刚度桩筏基础变形特性试验研究变刚度桩筏基础变形特性试验研究变刚度桩筏基础变形特性试验研究张武,迟铃泉,高文生,刘金砺(中国建筑科学研究院,北京100013)ExperimentalstudyondeformationbehaviorofpiledraftfoundationZHANGWu,CHILingquan,GAOWensheng,LIUJinli(ChinaAcademyofBuildingResearch,Beijing100013,China)Abstract:
@#@Basedonexperimentalstudyonraftfoundationswhichwerelocatedonanaturalsubsoilandfourpilegroupsrespectively,therelationshipsbetweenthebasesettlementandtheplanlayoutorthegeometricsizeofthepipeswereanalyzedinordertoprovidetheexperimentalbasisforthestiffness-balancedconceptualdesignofthepiledraftfoundation.Theresultsshowthatthesettlementdistributionofthepiledraftfoundationwithsuperstructureexhibitsthefeaturethatthesettlementofthecenterislargerthanthatofthecorner.Themaximumsettlementoftheraftfoundationlocatedontheuniformpilereducesabout70%thanthatlocatedonthenaturalbase,however,ifthelengthofthepileisdoubledorthenumberofthepileisincreasedby1/3inthecentralregionoftheraftfoundation,themaximumsettlementcanreduceabout50%.Themaximumandthedifferentialsettlementofthefoundationcanbereducedeffectivelybymeansofincreasingthegeometricsizeorthetotalnumberofthepipesunderthesuperstructurewhichincludesthecore-tubestructure.Theraftfoundationwiththepilescanreducedthesurfacesettlementofthegroundaroundthebuilding,andtheinfluencedregionislimitedwithinonlyanextensionof1/4widthofthefoundation.Keywords:
@#@piledraftfoundation;@#@pilegroupwithvariablestiffness;@#@staticexperiment;@#@settlement-balanceddesign;@#@deformationbehavior9699102
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- 刚度 基础 变形 特性 试验 研究
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