The life cycle of concrete bridges consists of three periods, i. e. , construction period, service life and degradation process. The failure probability of cable-stayed bridges during construction is higher than that during service life.
混凝土桥梁结构的生命全过程可分为施工期、使用期、老化期三个阶段,现行规范主要针对正常使用阶段,对施工期的可靠性研究还很少。
The construction period risk is one of the important reason of leading to project delays’resulting in the project progress’ the quality and the investment object out of control.
施工工期的风险是导致工程延误,造成项目进度、质量和投资目标失控的重要因素之一。
Design and analysis of the survey methods in the construction period of Yangzi River channel of Nanjing.
4.对南京长江过江通道工程施工阶段的测量方法进行了设计和分析。
We make comparison based on investment,construction techniques,construction period and impact on environment by the Shield-driven Tunnel and Mined Tunnel schemes after analyzing geological condition in the region.
在历次线路规划、方案比选工作中有切岗线方案、绕岗线方案、隧洞线方案等。 对隧洞线,在已有地质资料基础上又进行了补充地质勘察工作,并分别对盾构法、矿山法隧洞设计方案从施工技术难易程度、施工工期、对环境的影响及投资等方面进行了比较、分析、研究,结果选定盾构法圆型无压隧洞2条隧洞方案。