Miniature Steel Pipe Pile In Converse Construction

As China ’s economic development, high-rise buildings uncommon, building foundationis also more to build deeper. Accompanied by a high-rise building foundation graduallydeepened, the traditional foundation construction technology is no longer difficult to meet therequirements of the economy and, with the increasing number of high-rise buildings, for deepfoundation construction technology are increasingly high requirements. Deep excavationworks from recent years gradually increased, deep foundation construction technology hasbeen greatly developed, the Top-down approach is to develop a new foundation constructiontechnology. Top-down construction of underground works to improve security, you cangreatly reduce construction costs, shorten the construction period, with high technical andeconomic benefits. Miniature steel pipe piles used in practice in Top-down to reinforcefoundation, is a promising and promote the value of pile reinforcement technology.Papers Commercial Plaza in Guangzhou for the engineering and construction of a casestudy analysis of the micro-steel pipe pile inTop-down construction application. Paperintroduces the pile down construction technique, as described in the theoretical foundationand groundwork. About theTop-down construction applications and features, constructionclassification and construction procedures, structural stress analysis, as well as outlining thepile ’s role in the Top-down method and classification pile bearing pile in the Top-down modeand practice should be noted problem. Then introduced the application of micro-steel pipepile, steel pipe pile highlight micro pile works inTop-down construction of innovativeapplications. Contains a miniature range of applications and features steel pipe piles, micro-stress mechanism steel pipe pile, steel pipe pile design methods miniature and miniature steelpipe pile construction method of analyzing statements. Analysis of the micro-steel pipe pilessupporting columns in the Top-down approach and pile foundation engineering mechanicalperformance, construction technology, application value and advantages. Finally, the paperand construction Commercial Plaza in Guangzhou as an engineering example, analysis of theproject against the practice of pile foundation engineering technology, through the comparison of pile foundation designed to determine the foundations combinations. Analysis of the micro-mechanical properties of steel pipe pile, pile-soil pile group effect and combined effects, theuse of empirical formulas and PKPM software analysis of micro steel pipe pile bearingcapacity in engineering instances force performance. Comparative analysis of micro steel pipepiles drilled pile bearing capacity and artificial comparative analysis and economic effectscome with a miniature design and construction of steel pipe pile inTop-down engineeringpractices have good economic and technical benefits.Thesis, literature research, case studies and comparative analysis so research methods,analysis of pile foundation comparison, analyzes their characteristics and effects. Case inTop-down construction paper under the premise of an artificial digging pile+micro steel pipepiles as the pile reinforcement, combined with this new type of pile foundation bearingcapacity to meet the requirements. Paper through the combination of theory and practice,analyzed and summarized in a tiny steel pipe pile stress mechanism, design and constructionmethods.According to the Guangzhou construction and Commercial Plaza, case analysis, the stressperformance of micro steel pipe pile are analyzed in details, and the calculation of bearingcapacity of micro steel pipe pile case, compared with common manual hole digging pile’sbearing capacity and economic effect. Through the bearing capacity and the economic effect ofmicro steel pipe pile, this paper thinks, in the reverse construction method in the application ofmicro steel tube pile has good technical and economic advantages and value, can be achievedsatisfactory results.