The modern construction using the pneumatic caisson has multiple unique advantages in construction of bridge foundations and underground works, and is widely used in Japan. 现代气压沉箱工法在桥梁基础及各种地下工程建设中具有许多独特的优点,在日本得到广泛的应用。
Luanhe River Bridge is the first use of the history of China Railway Construction of pneumatic caisson railway bridge. 滦河大桥是中国铁路史上最先采用气压沉箱法施工的铁路桥。
Analysis of measuring data for pneumatic caisson during settlement 压气沉箱下沉时的计测数据分析
Before the settlement of pneumatic caisson, many kinds of stress-strain gauges were installed on caisson and the surrounding foundation to record the variation during settlement. 在压气沉箱下沉之前,在沉箱上设置多种应力应变计,纪录在下沉过程中变化情况。
Only when the ultimate bearing capacity of ring footings is exactly determined, the reasonable structure and width of the ring footing can be properly selected and the prosperous sinking is guaranteed and the pneumatic caisson construction is achieved. 只有准确确定了环形刃脚基础下土体的极限承载力,才能合理选择刃脚的结构和宽度设计,从而保证沉箱能够顺利下沉。
The main contents are following below: 1. The physical and mechanical characteristics of the representative silty clay in the in-situ spot of pneumatic caisson construction are experimentally tested. 主要包括以下几个方面:1.对气压沉箱施工现场具有代表性的砂质粉土进行室内试验研究。
The problem of ultimate bearing capacity of ring footings is the pivotal problem on the foundation design and construction of the pneumatic caisson. 沉箱的环形刃脚基础下土体的极限承载力问题是气压沉箱设计与施工的关键问题。
The course of pneumatic caisson sinking is numerical simulated. 对气压沉箱施工下沉过程进行了数值模拟。
Because of having many advantages, more and more pneumatic caisson method is used in the deep foundation construction of the high-rise skyscrapers, the huge trans-sea bridge, the deep underground station, the large underground oil depository, the huge hydropower station, and so on. 由于气压沉箱工法在深基础建设中有着诸多的优点而被越来越多的用于摩天大楼、大跨度桥梁、大深度地铁站、地下油库、大型水电站等设施的深基础建设中。
Systematical monitoring on the structural inner stress and deformation of pneumatic caisson and the effect of pneumatic caisson sinking on the surrounding environment are proceeded. 对气压沉箱的结构内力与变形以及沉箱下沉时对周围环境的影响进行了全面系统地监测。