路基工程
路基工程
로기공정
SUBGRADE ENGINEERING
2012年
2期
74-77
,共4页
赵飞%张莲花%张勐%覃雄谋%蒋忠信%杨善元
趙飛%張蓮花%張勐%覃雄謀%蔣忠信%楊善元
조비%장연화%장맹%담웅모%장충신%양선원
膨胀岩%抗剪强度%抗压强度%临界初始含水率%膨胀岩本构关系
膨脹巖%抗剪彊度%抗壓彊度%臨界初始含水率%膨脹巖本構關繫
팽창암%항전강도%항압강도%림계초시함수솔%팽창암본구관계
expansive rock%shearing strength%compressive strength%critical initial water content%constitutive relationship of expansive rock
膨胀岩具有遇水膨胀、软化、崩解和失水收缩、开裂等特性,一直是工程应用中的难点。通过云桂铁路膨胀岩的室内试验研究,分析了膨胀岩的抗剪强度、抗压强度和膨胀力的特性;根据抗剪试验,分析了膨胀岩的抗剪特性,着重研究了水对膨胀岩抗剪强度的影响;同时提出了临界初始含水率的概念…。根据膨胀力的试验,分析了膨胀力与膨胀应力的关系,进一步建立膨胀岩的修正Huder—Amberg本构变形模型。成果为云桂铁路膨胀岩的处理问题提供设计施工依据。
膨脹巖具有遇水膨脹、軟化、崩解和失水收縮、開裂等特性,一直是工程應用中的難點。通過雲桂鐵路膨脹巖的室內試驗研究,分析瞭膨脹巖的抗剪彊度、抗壓彊度和膨脹力的特性;根據抗剪試驗,分析瞭膨脹巖的抗剪特性,著重研究瞭水對膨脹巖抗剪彊度的影響;同時提齣瞭臨界初始含水率的概唸…。根據膨脹力的試驗,分析瞭膨脹力與膨脹應力的關繫,進一步建立膨脹巖的脩正Huder—Amberg本構變形模型。成果為雲桂鐵路膨脹巖的處理問題提供設計施工依據。
팽창암구유우수팽창、연화、붕해화실수수축、개렬등특성,일직시공정응용중적난점。통과운계철로팽창암적실내시험연구,분석료팽창암적항전강도、항압강도화팽창력적특성;근거항전시험,분석료팽창암적항전특성,착중연구료수대팽창암항전강도적영향;동시제출료림계초시함수솔적개념…。근거팽창력적시험,분석료팽창력여팽창응력적관계,진일보건립팽창암적수정Huder—Amberg본구변형모형。성과위운계철로팽창암적처리문제제공설계시공의거。
Expansive rock will be expanded, softened, and disintegrated when in water and contracted and cracked when loss of water, which is always the difficulty in engineering application. Through the indoor experimental study for the expansive rock along Kunming-Nanning Railway, its characteristics of shearing strength, compressive strength and expansion force are analyzed. According to shearing test, the shearing resistance property is analyzed, especially the effect of water on shearing strength of expansive rock; and the concept of critical initial water content is proposed as well. According to expansion force test, the relation between expansion force and expansion stress is analyzed and the revised Huder-Amberg constitutive model for deformation of the rock is established further. By experimental study, the design and construction basis is offered for treatment of expansive rock along Kunming-Nanning Railway.