CAJ | 학술논문

厦门梧村山浅埋大跨隧道,要求下穿浦南片区密集建筑群,其工程难度国内外罕见.通过对现场房屋的抬升实践和监测分析发现:房屋注浆抬升可分为两个层次,即注浆止沉和注浆抬升.现场抬升试验表明:采用动态跟踪补偿注浆能够较好地实现房屋止沉,而房屋的抬升则极富挑战性.一方面房屋抬升必须以补偿注浆、止浆墙完成、地层加固密实为前提;另一方面还必须选取合适的注浆工艺、注浆量、压力、抬升孔分布、注浆深度等,才可能实现抬升.抬升过程监控还发现:地层抬升明显,房屋止沉效果良好;但房屋抬升呈波动趋势,最终房屋仍呈沉降趋势.该结果反应了注浆地层抬升与房屋抬升是不一致的,只有较大范围、稳定的、均匀的、不消散的地表抬升,才能形成安全有效的房屋抬升.通过相关的解析和数值方法,对抬升注浆参数进行初步优选以及对房屋抬升量进行预测,结果可以满足工程需要.
하문오촌산천매대과수도,요구하천포남편구밀집건축군,기공정난도국내외한견.통과대현장방옥적태승실천화감측분석발현:방옥주장태승가분위량개층차,즉주장지침화주장태승.현장태승시험표명:채용동태근종보상주장능구교호지실현방옥지침,이방옥적태승칙겁부도전성.일방면방옥태승필수이보상주장、지장장완성、지층가고밀실위전제;령일방면환필수선취합괄적주장공예、주장량、압력、태승공분포、주장심도등,재가능실현태승.태승과정감공환발현:지층태승명현,방옥지침효과량호;단방옥태승정파동추세,최종방옥잉정침강추세.해결과반응료주장지층태승여방옥태승시불일치적,지유교대범위、은정적、균균적、불소산적지표태승,재능형성안전유효적방옥태승.통과상관적해석화수치방법,대태승주장삼수진행초보우선이급대방옥태승량진행예측,결과가이만족공정수요.
Wucunshan Tunnel of Xiamen which is designed as shallow large span structure needs to go through dense buildings in Punan territory, and construction difficulties is unusual both at home and abroad. By in-situ building lifting test and monitoring, two levels of building lifting by grouting can be seen: the first level is controlling and cutting building subsidence, the second is named building lifting strictly. The in-situ lifting tests show that the first level can be achieved with dynamic tracking and retrieving grouting successfully, whereas the second level requires much more refined grouting techniques. On one hand, the fulfilling of building lifting must be on the premise of the first level of retrieving grouting, finishing wall for grouting, and enforcing foundation soil. On the other hand, it depends on adequate grouting technologies, grouting amount, pressure, arrangement of grouting holes, holes and depths, etc. Related monitoring results make clear that land lifting is standing out, and building subsidence is distinctly slowed down, however, building lifting is only light and fluctuant, and finally trend to subside. And they also show that there is great difference between land and building liftings, only large range, stable, uniform, undissipated land lifting can make safe and effective building lifting, By analytical and numerical methods, lifting grouting parameters will be optimized and gained, and building lifting deformation can be predicted, which can generally meet the engineering needs.