Several important matters in pipe jacking construction are introduced , which are the design of jacking force , relay station and disposal of joints ; moreover its effect factors and treating measurement are discussed 介紹了頂管施工中的幾個重要問題:頂力設(shè)計、中繼站和管接頭的處理,并討論了其影響因素及處理措施。
The in - situ testing includes surface deformations , sub - surface movements , earth pressures , pore water pressures , underground water levels , spt , stresses of pipes and pipe - soil contact stresses . in addition , the total jacking forces , deviations in line and level of the pipe line and earth pressures in the earth pressure balance machines ( epbm ) are also recorded . the results of field - testing are analyzed , and the variety of testing datum include earth pressures , pore water pressures and underground water levels during the course of the shield through it are studied 現(xiàn)場測試內(nèi)容包括地面變形、深層土體變形、土壓力變化、孔隙水壓力變化、地下水位變化、土體標(biāo)準(zhǔn)貫入試驗、管道內(nèi)力變化、管土接觸應(yīng)力變化以及頂管施工現(xiàn)場記錄(包括頂力、土壓力、平面偏差、高程偏差等) 。
jacking force meaning:[Architecture] The force exerted temporarily by the device which introduces tension in tendons in prestressed concrete . jacking force перевод:усилие предварительного обжатия (бетона)