Research On Buett-Up Steel Structure Bracing System Used In Foundation Pits

With the development of economy, a lot of tall buildings are constructed in any city of china, the pits become biger and biger, deeper and deeper, however, the bracing system of deepen pits must be stable. Comparing with reinforced concrete bracing systems, the steel bracing systems have obvious superiorities such as the light weight, convenient for installing and disassembly, repeated use, installing with digging, control on the deformations of foundation pit and so on, therefore, it should be adopted firstly, now, the steel pipe bracing system are generally used.The paper mainly researchs on technique possibility of buett-up steel structure bracing system used in foundation pits. Firstly, relate the basic principle that buett-up steel structure bracing system is installed and constitute, then select the most representative pits engineer located in Hangzhou region for example, the distribution of soil pressure is calculated according to the geology reporter, bracing dint is calculated according to the consecution beam method, a standard buett-up steel structure bracing system is designed by sts soft according to distribution of soil pressure and span of deep foundation pit, the strength and stability of buett-up steel structure bracing are analyzed by ANSYS, including stake, soil and bracing system working togetherly, Finally, the strength and stability of complicated buett-up steel structure bracing adopted to the big span foundation pit are analyzed by ANSYS, including the stability of reunite...