The Application And Development Of Deep Foundation Pit Support Structure Of Ring Beam

With China's rapid economic growth and urban development are also developing rapidly, and ultra-high-level design and construction of high-rise buildings has become a common phenomenon. However, in actual construction, whether it is high-rise buildings or the MTR deep excavation works, as in the cities are carried out excavation pit usually exist around the strategic pipeline construction or have been built and other structures, and this involves Excavation to a very important, to protect the safety of its use of the surrounding structures. And general Pit Support is mostly temporary structure, and also could easily lead to too much investment in waste, but also supporting structure unsafe works will inevitably cause the accident. Therefore, the safe and reasonable to choose a suitable support structure and foundation works in accordance with the characteristics of the design is a scientific foundation works to solve the main content.Central beam supporting Founded in 1987, proved in practice that on soft ground in a deep circular foundation works within the support system has many advantages, particularly in the large volume of the deep foundation work using large diameter ring beam, the economic support efficiency is particularly significant.Ring beam support system with investment of savings, security, stability, small deformation, construction convenience advantages, such as shortening the time limit. It can improve mechanical efficiency. Provide more space to ensure the continuous construction of underground structures and integrity, and other concrete ways of supporting small amount compared to structural engineering, ease of removal, reducing the overall cost of supporting structure. A wide range of applications, particularly in the foundation is weak, narrow space under the conditions better play its role.Despite the deep pit ring beam supporting technology has many advantages, but in practice there is still an unavoidable question is the level of support in the supporting role after the completion of the removal costs of a long construction period.To overcome these shortcomings, and improve the technology so that it better in construction applications. People made use of the underground project to replace part of the permanent structure beam supporting structure of the level of support the idea of the level of support and set up in the inner ring structure of the main building to ensure that the beam from the next upward by the construction sequence is "inverse process-is Oxfam" . Construction of such a project is to ensure the quality, cost savings, and shortened the time limit, in practical work has been extensively applied.