【摘要】 针对南京火车站站前广场隧道的改造进行了研究,计算分析了在混凝土叠合层结构中取消温度伸缩缝的可行性,用超长预应力筋来控制裂缝的产生,解决原顶板中构造缺陷所造成的刚度差。更多还原

【Abstract】 The rebuild of tunnel in front of Nanjing Railway Station is investigated. The paper analyses the problem from the follow two aspects : no expansion joints are made in the ultra-long large area concrete superposition structure , use ultra-long prestress reinforcement to control the cracking ; resolve the stiffness difference in the primary roof because of the constructional limitation.更多还原