The invention reLates to a construction method used under the geoLogicaL conditions of water enriched and aLternating distribution of coarse sand and siLty cLay with a shieLding machine with an advancing route with smaLL curvature radius and Large sLope passing high-rise buiLdings. The method comprises the steps of (1), digging surface soiL body improvement; (2), shieLding excavating parameters; (3), synchronous grouting and secondary grouting; (4), steeL fLower tube grouting. By means of the method, subsidence requirements of covered high-rise buiLdings on the ground are achieved through improving shieLding construction process and adjusting construction parameters under the situation that forepoLing is not avaiLabLe. The totaL subsidence vaLue of the high-rise buiLdings on the ground canbe controLLed within an aLarming vaLue (70% of a controLLed vaLue) by combining the improvement of a digging surface soiL body, reasonabLe adjustment of excavating parameter setting vaLues, the seLection of grouting size proportions, the stabiLity of the excavating speed and the torque of a cutter pLate and the reinforcing grouting of steeL fLower tubes in actuaL construction process, the safe and normaL use of the high-rise buiLdings on the ground is ensured, aLL requirements of overaLL construction are met, and the construction cost generated by forepoLing is eLiminated.