【摘要】 201O上海世博总体规划中,将1984年设计的原上海南市发电厂165m高的烟囱,改造成201m高的"世博和谐塔",改建后该塔将成为上海世博园区标志性观光游艺塔。对于该加固改造工程,本文通过论证,建议不整体加厚筒壁混凝土,利用筒内空间,采用体外预应力措施,达到控制抗裂度,提高耐久性,减少残余变形的目的。体外预应力措施可以缩短工期、节省造价,符合节能减排要求。更多还原

【Abstract】 A 165-meter tall chimney in the original Shanghai Nanshi Power Plant built in 1984 will be erected. It will become the 201-meter tall Expo Harmony Tower and a landmark feature dedicated to sightseeing and recreation purposes.For this erecting project,the process of using pretensioned reinforcement to control crack resistance will be examinated in the paper.This solution method would be able to reduce working period,save cost and lower energy consumption.更多还原