上海市某隧道路面引道工程裂缝控制研究

王锋¹，王增春¹，艾治勇¹，高宇²

（1.上海交通大学空间结构中心 200030；2. 浙江东阳二建上海公司）

摘要：本工程结构复杂，技术要求高，施工条件差，气候环境影响大。引道部分且由于地下水位高，混凝土浇捣厚度大（500mm～1200mm），水化热的影响大，日照辐射和气温变化温差大等诸多不利因素均可导致路面开裂，甚至引起路面因地下水位高而渗水，不利于交通。本文通过理论分析和研究，掌握路面开裂的影响因素，保证隧道工程的正常施工和使用。文中作者采用数值模拟分析了引道路面的开裂情况.

关键词：裂缝性质；开裂诱因；水化热；大气温度；混凝土收缩

Research on Cracks of the Leading Road of A Tunnel in Shanghai

WANG Feng , WANG Zeng-chun, AI Zhi-yong  et al

Abstract：In the article, the structure of the tunnel is complex. Moreover, the condition of the construction is low and the infection of climate can’t be ignored. Furthermore, the water lever of the leading road is high, and the depth of concrete is large, so the effect of caloric of hydration is great. Anyway, the radiation of sunlight and the difference of air temperature changing can also lead to crazing of the load, even causing seeping of the road for the reason of the high water lever, which can cause confusion of traffic. And in this article, the authors try to look for some solution to control crack of the road in theory analysis. At last, the crazing of the leading road has been analyzed in numerical simulation.

Key words：Cracks character； Cracking inducement; Caloric of hydration; Atmosphere temperature; Concrete shrink